50 results on '"Carijoa riisei"'
Search Results
2. In the aftermath of Hurricane Irma : Colonization of a 4-year-old shipwreck by native and non-native corals, including a new cryptogenic species for the Caribbean
- Author
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Hoeksema, Bert W., Meijer zu Schlochtern, Melanie P., Samimi-Namin, Kaveh, McFadden, Catherine S., Hoeksema, Bert W., Meijer zu Schlochtern, Melanie P., Samimi-Namin, Kaveh, and McFadden, Catherine S.
- Abstract
Little is known about early coral settlement on shipwrecks with regard to their species and size compositions. Hurricanes in the Caribbean have a long history of sinking ships but a link with new coral settlement is understudied. In 2017, Hurricane Irma caused the sinking of over 300 vessels in the coastal waters of Saint Martin, eastern Caribbean. In 2021, coral settlement was studied on one of them, which included two native, one non-native, and two cryptogenic species. The corals were smaller than 8 cm in diameter. The invasive Tubastraea coccinea was the most abundant scleractinian and was predominantly represented by juveniles. A cryptogenic species, Stragulum bicolor, new for the Caribbean, was the most common octocoral. Because they can be harmful to the environment, shipwrecks should be monitored frequently for the occurrence of non-native species, especially when they are only a few years old.
- Published
- 2023
3. In the aftermath of hurricane Irma: Colonization of a 4-year-old shipwreck by native and non-native corals, including a new cryptogenic species for the Caribbean
- Author
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Bert W. Hoeksema, Melanie P. Meijer zu Schlochtern, Kaveh Samimi-Namin, Catherine S. McFadden, and Conservation Ecology Group
- Subjects
Aquaculture and Fisheries ,Invasive species ,Aquacultuur en Visserij ,Biofouling ,Stragulum bicolor ,Substrate colonization ,WIAS ,Tubastraea coccinea ,Aquatic Science ,Carijoa riisei ,Oceanography ,Pollution - Abstract
Little is known about early coral settlement on shipwrecks with regard to their species and size compositions. Hurricanes in the Caribbean have a long history of sinking ships but a link with new coral settlement is understudied. In 2017, Hurricane Irma caused the sinking of over 300 vessels in the coastal waters of Saint Martin, eastern Caribbean. In 2021, coral settlement was studied on one of them, which included two native, one non-native, and two cryptogenic species. The corals were smaller than 8 cm in diameter. The invasive Tubastraea coccinea was the most abundant scleractinian and was predominantly represented by juveniles. A cryptogenic species, Stragulum bicolor, new for the Caribbean, was the most common octocoral. Because they can be harmful to the environment, shipwrecks should be monitored frequently for the occurrence of non-native species, especially when they are only a few years old.
- Published
- 2023
4. Change in habitat suitability of the invasive Snowflake coral (Carijoa riisei) during climate change: An ensemble modelling approach.
- Author
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Nisin K.M.N., Mohamed, K.R., Sreenath, and Paul Sreeram, Miriam
- Subjects
CLIMATE change models ,HABITATS ,CORALS ,SNOWFLAKES ,EFFECT of human beings on climate change ,INDEPENDENT variables ,SPECIES distribution ,RANDOM forest algorithms - Abstract
Global species range dynamics are intrinsically influenced by the interplay between human activities and climate compatibility. Snowflake coral (Carijoa riisei) is a soft octacoral species that belongs to the family Clavulariidae and can rapidly grow to colonise new habitats. This species has successfully colonised numerous habitats, displacing native species and disrupting the ecological balance in the introduced habitats. Recent investigations into species invasions in aquatic ecosystems suggest that anthropogenic activities and climate change will accelerate the introduction, establishment, and spread of invasive species to new habitats. In this study, we utilised ensemble species distribution modelling to investigate shifts in the invasive potential of Snowflake coral in current and future climatic settings on a global scale. Future distribution was forecasted using four Representative Concentration Pathways (RCPs 2.6, 4.5, 6.0, and 8.5) across two periods (2040–2050 and 2090–2100). The results accurately predicted the known distributional range of the species. Temperature, distance to the port, and bathymetry were identified as the three most significant predictor variables. The low and medium habitat suitability regions increased in all scenarios and periods. In the high habitat suitability category, only RCP 4.5 and RCP 6.0 in the 2090–2100 period exhibited an increase in percentage area. Under the worst-case climate scenario, RCP 8.5 (2090–2100), the high-suitability regions displayed a surprising decline in area percentage, which can be attributed to the temperature thresholds of the species. Our findings indicate that the species has a greater potential to spread under current climatic conditions than previously reported, and its expansion may further accelerate in the future. This highlights the urgent need for more intensive surveys employing advanced detection tools and the implementation of proactive management measures to protect vulnerable ecosystems that could be impacted by this species. • Predicts the current and future global distribution of snowflake coral (Carijoa riisei) using ensemble modelling. • Nine individual models were combined using the biomod2 package on the R platform to create the ensemble model. • Temperature, distance to the port, and bathymetry were identified as the most significant variables. • Random Forest (RF) and Classification Tree Analysis (CTA) were the best and least performing models, respectively. • RCP60 2100 and RCP85 2100 had the highest and lowest percentage of suitable habitats in future predictions, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
5. An Invasion of Snowflake Coral Carijoa riisei (Duchassaing and Michelotti 1860) in Indian Seas: Threats to Coral Reef Ecosystem
- Author
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Raghunathan, C., Venkataraman, K., Satyanarayana, Ch., Rajkumar, R., Venkataraman, K., editor, Sivaperuman, C., editor, and Raghunathan, C., editor
- Published
- 2013
- Full Text
- View/download PDF
6. The alien octocoral Carijoa riisei is a biogenic substrate multiplier in artificial Brazilian shipwrecks
- Author
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José Carlos Pacheco dos Santos, Stella Maris Feitosa de Pádua, Carlos D. Pérez, Mônica L. Botter-Carvalho, Camilla Silva de Oliveira, and Paula Braga Gomes
- Subjects
Octocorallia ,ved/biology ,Ecology ,Fauna ,ved/biology.organism_classification_rank.species ,Aquatic Science ,Biology ,biology.organism_classification ,Ecosystem engineer ,Habitat ,Abundance (ecology) ,Carijoa riisei ,Benthic zone ,Epibiont ,Ecology, Evolution, Behavior and Systematics - Abstract
Despite the obvious negative effects caused by invasive species, some recent studies have shown that the impacts at local scale are diverse and not necessarily negative. Arborescent benthic organisms such as octocorals form three-dimensional structures capable of increasing the amount of substrate available and providing shelter for epibiont species. We investigated the role of the alien octocoral Carijoa riisei on the diversity of benthic communities in three shipwrecks on the north-eastern coast of Brazil. We expected that (a) the fauna associated with the octocoral are richer and more diverse compared to the adjacent; (b) some species are exclusively associated with C. riisei; (c) the species that are present both in the areas with and without C. riisei have a greater abundance when associated with the octocoral. For this, we compared the macrobenthic communities associated with C. riisei to those found in adjacent areas where the octocoral was absent. Our study showed that the communities associated with the octocoral were 1.5 times richer and 10 times more abundant than adjacent communities, with 29 exclusive taxa. The dominant taxa were the amphipods Ericthonius brasiliensis and Podocerus brasiliensis and polychaetes of the family Syllidae. These taxa were present in areas with presence and absence of C. riisei, but their abundance was significantly greater where the octocoral was present. Our results reinforce the idea that Carijoa riisei acts as an ecosystem engineer in coastal reefs, creating new habitats and increasing diversity at a local scale, even though it is an alien species.
- Published
- 2021
7. The invasive snowflake coral (Carijoa riisei) in the Tropical Eastern Pacific, Colombia
- Author
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Juan Armando Sánchez and Diana Ballesteros
- Subjects
Carijoa riisei ,octocorales ,especies invasoras ,Pacífico Oriental Tropical ,Gorgona ,Malpelo ,Cabo Corrientes ,Chocó ,Colombia ,Biology (General) ,QH301-705.5 - Abstract
Carijoa riisei (Octocorallia: Cnidaria), a western Atlantic species, has been reported in the Pacific as an invasive species for nearly forty years. C. riisei has been recently observed overgrowing native octocorals at several rocky-coral littorals in the Colombian Tropical Eastern Pacific-(TEP). C. riisei has inhabited these reefs for at least 15 years but the aggressive overgrowth on other octocorals have been noted until recently. Here, we surveyed for the first time the distribution and inter-specific aggression by C. riisei in both coastal and oceanic areas colonized in the Colombian TEP (Malpelo, Gorgona and Cabo Corrientes), including preliminary multiyear surveys during 2007-2013. We observed community-wide octocoral mortalities (including local extinction of some Muricea spp.) and a steady occurrence of competing and overgrowing Pacifigorgia seafans and Leptogorgia seawhips. In Gorgona Island, at two different sites, over 87% (n=77 tagged colonies) of octocorals (Pacifigorgia spp. and Leptogorgia alba) died as a result of C. riisei interaction and/or overgrowth between 2011 and 2013. C. riisei overgrows octocorals with an estimate at linear growth rate of about 1cm m-1. The aggressive overgrowth of this species in TEP deserves more attention and regular monitoring programs. Rev. Biol. Trop. 62 (Suppl. 1): 199-207. Epub 2014 February 01.
- Published
- 2014
8. Invasion and current distribution of the octocoral Carijoa riisei (Duchassaing & Michelotti, 1860) in the Ecuadorian coast (Eastern Tropical Pacific)
- Author
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Jorge Coronel, Nardy Diez, Mariana Lozada, Gregorio Bigatti, Julián Pérez-Correa, Cecilia Uzca-Sornoza, James McD Mair, Fernando Espinoza, Telmo De la Cuadra, Gladys Torres, Maritza Cárdenas-Calle, Inti Keith, and Ileana Herrera
- Subjects
Tropical pacific ,Current distribution ,Carijoa riisei ,ved/biology ,Ecology ,ved/biology.organism_classification_rank.species ,Aquatic Science ,Biology ,Invasive species ,Water Science and Technology - Published
- 2021
9. Pregnane steroids from the Vietnamese octocoral Carijoa riisei.
- Author
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Nguyen Hoai, Nam, Nguyen Thi, Huong, Tran Thi Hong, Hanh, Nguyen Van, Thanh, Nguyen Xuan, Cuong, Do Cong, Thung, Phan Van, Kiem, and Chau Van, Minh
- Abstract
Six pregnane steroids including one new compound namely 15β-hydroxypregna-4,20-dien-3-one (1), were isolated and structurally elucidated from the octocoralCarijoa riisei. The cytotoxic activity against a panel of eight human cancer cell lines of isolated compounds was also evaluated by SRB method. As the results, 18-acetoxypregna-1,4,20-trien-3-one (5) showed significant cytotoxicity against all the tested cell lines with the IC50values from 22.29 ± 1.47 to 48.73 ± 3.93 μM, whereas 15β-acetoxypregna-1,4,20-trien-3-one (3) and 20R-acetoxypregna-1,4-dien-3-one (6) only exhibited weak effect on KB cell line with IC50values of 93.62 ± 7.32 and 71.38 ± 5.45 μM, respectively. [ABSTRACT FROM PUBLISHER]
- Published
- 2017
- Full Text
- View/download PDF
10. Taking a detour: invasion of an octocoral into the Tropical Eastern Pacific.
- Author
-
Quintanilla, Elena, Wilke, Thomas, Ramírez-Portilla, Catalina, Sarmiento, Adriana, and Sánchez, Juan
- Abstract
The tropical snowflake octocoral Carijoa riisei, which is thought to be native to the Indo-Pacific biogeographical region, has been increasingly reported from the Colombian Tropical Eastern Pacific (TEP) over the past two decades. Massive mortalities of native octocorals, particularly in Pacifigorgia spp. and Muricea spp., were observed due to C. riisei overgrowth. However, the area of origin of TEP C. riisei remains unknown and its potential invasive status has not been addressed yet. We evaluated geographical scenarios for the colonization of the Colombian TEP by conducting phylogeographical analyses based on nuclear and mitochondrial sequences of 306 individual specimens from across the species' (native/non-native) range and applying hypothesis-specific operational criteria. Additionally, we assessed whether C. riisei has to be considered an invasive species based on the previously proposed 'unified framework for biological invasions'. Our results showed relatively high genetic differentiation between Colombian TEP populations, on the one side, and Indo-Pacific and Hawaiian populations, on the other side. In contrast, we could not identify genetic differentiation and significant isolation by distance (IBD) between Colombian TEP and Tropical Atlantic populations. C. riisei might have been introduced from the Atlantic into the Colombian TEP, possibly via the Panama Canal. Based on the criteria of the 'unified framework for biological invasions', we also conclude that this octocoral constitutes an invasive species. Our study may serve as a basis for establishing strategies to protect native species from one of the very few invasive coral species worldwide. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
11. In the aftermath of Hurricane Irma: Colonization of a 4-year-old shipwreck by native and non-native corals, including a new cryptogenic species for the Caribbean.
- Author
-
Hoeksema BW, Meijer Zu Schlochtern MP, Samimi-Namin K, and McFadden CS
- Subjects
- Animals, Caribbean Region, Coral Reefs, Anthozoa, Cyclonic Storms
- Abstract
Little is known about early coral settlement on shipwrecks with regard to their species and size compositions. Hurricanes in the Caribbean have a long history of sinking ships but a link with new coral settlement is understudied. In 2017, Hurricane Irma caused the sinking of over 300 vessels in the coastal waters of Saint Martin, eastern Caribbean. In 2021, coral settlement was studied on one of them, which included two native, one non-native, and two cryptogenic species. The corals were smaller than 8 cm in diameter. The invasive Tubastraea coccinea was the most abundant scleractinian and was predominantly represented by juveniles. A cryptogenic species, Stragulum bicolor, new for the Caribbean, was the most common octocoral. Because they can be harmful to the environment, shipwrecks should be monitored frequently for the occurrence of non-native species, especially when they are only a few years old., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
12. Occurrence and Distribution of an Invasive Octocoral, Carijoa riisei in Malaysia’s Marine Park of Pulau Payar
- Author
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Zaidnuddin I, Blue Planet Environment Plt, Pulau Pinang, Malaysia, Goeden Gb, Normah S, Ismail Ms, and Md. Nizam I
- Subjects
Fishery ,Geography ,business.industry ,Carijoa riisei ,ved/biology ,ved/biology.organism_classification_rank.species ,Distribution (economics) ,General Medicine ,Marine park ,business - Abstract
The occurrence of the invasive snowflake coral, Carijoa riisei (Duchassaing & Michelotti, 1860) in Malaysian waters was reported after the species was first detected at Pulau Payar Marine Park in 2014. Its recent appearance in Pulau Payar highlights the need for baseline data concerning the distribution pattern and diversity of C. riisei within the Pulau Payar Marine Park and may enable effective remedial actions in controlling the overgrowth of this octocoral. The snowflake coral and other substrates were quantified over quadrats located randomly on a 50 m transects in three study sites, i.e. Coral Garden, Kaca Reef and Lembu Rock. The percent cover of each substrate category and diversity were determined using the Coral Point Count with Excel extensions (CPCe) software. The snowflake coral was most frequently observed at the depths of 10 to 20 m at each of the study sites. The area with highest coverage of this octocoral was in Kaca Reef at the depth of 20m. About one-third of the benthos and abiotic substrate at all sites was populated by C. riisei. Statistically, no significant differences were found between the distributions of C. riisei by sites. Using diversity indices, we were able to demonstrate the ability of this species to exploit a wide range of differing environments. This ability has allowed it to spread within this marine protected area. Based on this study, we suggested monitoring programs should be regularly conducted within Pulau Payar Marine Park, other reefs should be surveyed for its presence, and an effective mitigation program should be developed for the conservation of the marine ecosystems affected by this invasive species.
- Published
- 2021
13. Molecular markers confirm the presence of the alien snowflake coral Carijoa riisei (Octocorallia: Alcyonacea) in Cabo Verde Islands (Central-East Atlantic)
- Author
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Evandro P. Lopes, João Deus Soares, Rui Freitas, António M. Santos, and Raquel Xavier
- Subjects
Octocorallia ,biology ,Alcyonacea ,Carijoa riisei ,ved/biology ,Ecology ,Coral ,ved/biology.organism_classification_rank.species ,Alien ,Snowflake ,biology.organism_classification - Abstract
The snowflake coral Carijoa riisei is one of the most invasive and successfully adapting species in the coastal marine environment. This species can disperse through ballast waters or fouling on the hull of ships, which allows it to expand very quickly to areas where it is not native. Recently C. riisei was identified in the Porto Grande Bay in São Vicente island in Cabo Verde Islands. We analysed mitochondrial and nuclear DNA sequences from specimens collected at this locality to determine the potential origin of this invasion. Lack of genetic variation in both mitochondrial and nuclear genes suggest a very recent invasion (bottleneck effect) but did not permit to establish its origin with total confidence.
- Published
- 2021
14. The invasive snowflake coral (Carijoa riisei) in the Tropical Eastern Pacific, Colombia.
- Author
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Sánchez, Juan Armando and Ballesteros, Diana
- Subjects
- *
SNOWFLAKES , *INTRODUCED animals , *ANIMAL species , *OCTOCORALLIA , *COLONIAL animals (Marine invertebrates) - Abstract
Carijoa riisei (Octocorallia: Cnidaria), a western Atlantic species, has been reported in the Pacific as an invasive species for nearly forty years. C. riisei has been recently observed overgrowing native octocorals at several rocky-coral littorals in the Colombian Tropical Eastern Pacific-(TEP). C. riisei has inhabited these reefs for at least 15 years but the aggressive overgrowth on other octocorals have been noted until recently. Here, we surveyed for the first time the distribution and inter-specific aggression by C. riisei in both coastal and oceanic areas colonized in the Colombian TEP (Malpelo, Gorgona and Cabo Corrientes), including preliminary multiyear surveys during 2007-2013. We observed community-wide octocoral mortalities (including local extinction of some Muricea spp.) and a steady occurrence of competing and overgrowing Pacifigorgia seafans and Leptogorgia seawhips. In Gorgona Island, at two different sites, over 87% (n=77 tagged colonies) of octocorals (Pacifigorgia spp. and Leptogorgia alba) died as a result of C. riisei interaction and/or overgrowth between 2011 and 2013. C. riisei overgrows octocorals with an estimate at linear growth rate of about 1cm m-1. The aggressive overgrowth of this species in TEP deserves more attention and regular monitoring programs. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
15. Invasive Alien Species and Their Effects on Marine Animal Forests
- Author
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E. Serrano, Amanda Guilherme da Silva, Beatriz G. Fleury, M. Milazzo, G. Rilov, Bert W. Hoeksema, Juan A. Sánchez, Ricardo J. Miranda, Rosana M. Rocha, and Joel C. Creed
- Subjects
education.field_of_study ,Tubastraea spp ,Invasive ,ved/biology ,Ecology ,ved/biology.organism_classification_rank.species ,Population ,Oculina patagonica ,Vectors ,Nonindigenous ,Marine species ,Invasive species ,Ecosystem engineer ,Ecosystem structure ,Geography ,Mytilus galloprovincialis ,Carijoa riisei ,Taxonomic rank ,Alien species ,education ,Pathways ,Reproduction strategies - Abstract
Nonindigenous species are increasingly transported around the world through multiple pathways by a diversity of vectors. Invasive species are a subset of those that are introduced into the receptor community, where they establish and increase their population to a size where they impact the native system. Marine invasive species can therefore interact with and modify native animal forests and/or create novel ones resulting in simple-to-complex changes in material cycling, energy flow, ecosystem structure, and function. Despite the ever increasing number of studies dealing with marine invasive species, mostly biological invasions are mentioned generically as one of a number of threats of direct and indirect effects of human activities on animal forests. In order to redress this imbalance, this chapter focuses on invasive species as modifiers and creators of marine animal forests. As well as some theoretical consideration of biological invasion, we consider how pathways and vectors have changed over time and the importance of historical collections. We overview the available information regarding the main taxonomic groups of marine species that are invasive to animal forests, what makes them successful invaders, and how they interact with and effect the receptor community. The establishment of novel animal forests through biological invasion is also reviewed. We identify knowledge gaps and present perspectives and challenges for future research.
- Published
- 2020
16. Community structure of shallow water Alcyonacea (Anthozoa: Octocorallia) from the southern Tropical Eastern Pacific
- Author
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Antonella Lavorato, Bernhard Riegl, Jenny Rodríguez, and Sascha C. C. Steiner
- Subjects
0106 biological sciences ,Octocorallia ,biology ,ved/biology ,Ecology ,010604 marine biology & hydrobiology ,ved/biology.organism_classification_rank.species ,Coralline algae ,Species diversity ,biology.organism_classification ,010603 evolutionary biology ,01 natural sciences ,Common species ,Alcyonacea ,Carijoa riisei ,Dominance (ecology) ,Crustose ,Ecology, Evolution, Behavior and Systematics - Abstract
Alcyonacea are sessile invertebrates, which can significantly shape the boundary layer in coral reefs and rocky habitats. Ecological aspects in this taxon have been well studied in the Caribbean, Mediterranean, and Indo-Pacific. With few recent exceptions, studies in the Eastern Pacific focused on taxonomy. We present a quantitative assessment of Alcyonacea communities from the southern Tropical Eastern Pacific, based on video transects in the Marine Reserve El Pelado. Seventeen species from the Plexauridae (8), Gorgoniidea (8), and Clavularidae (1) were identified, comprising 6963 colonies dominated by Muricea (86.7%), particularly M. plantaginea (48.6%). The overwhelming dominance of M. plantaginea was the most striking and previously unreported community trait, which contributed to a moderate Shannon entropy (n = 31, H mean 1.40, SD 0.22), equitability (n = 31, HE mean 0.16, SD 0.4), and species diversity expressed as effective number of species (n = 31, mean 4.16, SD 0.87). Few common species overprinted a more variable and subtle community pattern among rarer species, suggested in agglomerative hierarchical cluster analyses. Four species (M. plantaginea, M. purpurea, M. fruticosa and Leptogorgia alba) had the strongest influence on site groupings in the correspondence analysis between a principal component analysis of a Hellinger-transformed Alcyonacea species matrix and substrate categories, with filamentous turf algae and crustose coralline algae being the main determinants of site differentiation. Muricea plantaginea’s qualities of a keystone species, and the eurytopic and stenoecious distribution traits among some species are discussed. The invasive Carijoa riisei was confirmed as biological thereat to other Alcyonacea, and possible physiological distribution limitations are indicated.
- Published
- 2018
17. First detection of the alien snowflake coral Carijoa riisei (Duchassaing and Michelotti, 1860) (Cnidaria: Alcyonacea) in the port of Manzanillo in the Mexican Pacific
- Author
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Eduardo Ríos-Jara and Cristian Moisés Galván-Villa
- Subjects
0106 biological sciences ,Cnidaria ,Ecology ,biology ,ved/biology ,Coral ,ved/biology.organism_classification_rank.species ,010607 zoology ,Alien ,biology.organism_classification ,010603 evolutionary biology ,01 natural sciences ,Port (computer networking) ,Oceanography ,Geography ,Alcyonacea ,Carijoa riisei ,Ecology, Evolution, Behavior and Systematics - Published
- 2018
18. Resolving natural ranges and marine invasions in a globally distributed octocoral (genus Carijoa).
- Author
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Concepcionh, G. T., Kahng, S. E., Crepeau, M. W., Franklin, E. C., Coles, S. L., and Toonen, R. J.
- Subjects
SNOWFLAKES ,MITOCHONDRIAL DNA ,POPULATION ,INTRONS ,INTRODUCED species ,GENETICS ,DEMOGRAPHY - Abstract
The article reports on the result of a study which confirm the reliability of the first published report of the snowflake coral in Hawaii from Pearl Harbor in 1972. The study includes the use of mitochondrial (mtDNA) and nuclear (nDNA) sequence date to compare Hawaiian populations with samples of Carijoa collected worldwide. Result of the study shows that the published reports of geographically wide-ranging invasions of Carijoa throughout the Pacific appear unfounded because their global sampling shows higher diversity in mtDNA and nDNA throughout the Pacific relative to the Caribbean-Atlantic, indicating long evolutionary presence of Carijoa in the region.
- Published
- 2010
- Full Text
- View/download PDF
19. Taking a detour: invasion of an octocoral into the Tropical Eastern Pacific
- Author
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Adriana Sarmiento, Thomas Wilke, Juan A. Sánchez, Catalina Ramírez-Portilla, and Elena Quintanilla
- Subjects
0106 biological sciences ,Ecology ,Tropical Eastern Pacific ,ved/biology ,Range (biology) ,010604 marine biology & hydrobiology ,ved/biology.organism_classification_rank.species ,Introduced species ,Biology ,Tropical Atlantic ,010603 evolutionary biology ,01 natural sciences ,Invasive species ,Carijoa riisei ,Colonization ,Ecology, Evolution, Behavior and Systematics ,Isolation by distance - Abstract
The tropical snowflake octocoral Carijoa riisei, which is thought to be native to the Indo-Pacific biogeographical region, has been increasingly reported from the Colombian Tropical Eastern Pacific (TEP) over the past two decades. Massive mortalities of native octocorals, particularly in Pacifigorgia spp. and Muricea spp., were observed due to C. riisei overgrowth. However, the area of origin of TEP C. riisei remains unknown and its potential invasive status has not been addressed yet. We evaluated geographical scenarios for the colonization of the Colombian TEP by conducting phylogeographical analyses based on nuclear and mitochondrial sequences of 306 individual specimens from across the species’ (native/non-native) range and applying hypothesis-specific operational criteria. Additionally, we assessed whether C. riisei has to be considered an invasive species based on the previously proposed ‘unified framework for biological invasions’. Our results showed relatively high genetic differentiation between Colombian TEP populations, on the one side, and Indo-Pacific and Hawaiian populations, on the other side. In contrast, we could not identify genetic differentiation and significant isolation by distance (IBD) between Colombian TEP and Tropical Atlantic populations. C. riisei might have been introduced from the Atlantic into the Colombian TEP, possibly via the Panama Canal. Based on the criteria of the ‘unified framework for biological invasions’, we also conclude that this octocoral constitutes an invasive species. Our study may serve as a basis for establishing strategies to protect native species from one of the very few invasive coral species worldwide.
- Published
- 2017
20. Complete mitochondrial genome of Carijoa riisei (Duchassaing & Michelotti, 1860) (Octocorallia: Alcyonacea: Stolonifera: Clavulariidae)
- Author
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Erin E. Easton and David W. Hicks
- Subjects
0106 biological sciences ,0301 basic medicine ,Mitochondrial DNA ,Octocorallia ,ved/biology ,ved/biology.organism_classification_rank.species ,Zoology ,Biology ,Ribosomal RNA ,biology.organism_classification ,010603 evolutionary biology ,01 natural sciences ,Stolonifera ,03 medical and health sciences ,030104 developmental biology ,Alcyonacea ,Carijoa riisei ,Genetics ,Sinularia ,Molecular Biology ,Gene - Abstract
We report the first complete Stoloniferamitochondrial genome.Carijoa riisei(Duchassaing&Michelotti, 1860) isolate CLP2_A03was collected by scuba at 32 m on the USTS Texas Clipper (27° 53.7827' N, 93° 36.2702' W). The complete mitogenome has the ancestral octocoral gene order for its 14 protein-coding genes, two rRNA genes, and one tRNA gene. It is 18,714 bp (30.7% A, 15.8% C, 18.8% G, and 34.7% T). Of the Alcyonacea mitogenomes published to date, it is most genetically similar (94% uncorrected) to Sinularia ceramensisVerseveldt, 1977 (NC_044122).
- Published
- 2020
21. Pregnane steroids from the Vietnamese octocoral Carijoa riisei
- Author
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Thanh Nguyen Van, Minh Chau Van, Cuong Nguyen Xuan, Hanh Tran Thi Hong, Huong Nguyen Thi, Kiem Phan Van, Nam Nguyen Hoai, and Thung Do Cong
- Subjects
Stereochemistry ,medicine.medical_treatment ,ved/biology.organism_classification_rank.species ,Plant Science ,Biology ,17-alpha-Hydroxypregnenolone ,01 natural sciences ,Biochemistry ,Analytical Chemistry ,Steroid ,chemistry.chemical_compound ,Carijoa riisei ,Cell Line, Tumor ,medicine ,Ic50 values ,Cytotoxic T cell ,Animals ,Humans ,Cytotoxicity ,Molecular Structure ,010405 organic chemistry ,ved/biology ,Organic Chemistry ,Pregnane ,Anthozoa ,Pregnanes ,Molecular biology ,0104 chemical sciences ,010404 medicinal & biomolecular chemistry ,chemistry ,Vietnam ,Cell culture ,Steroids ,Human cancer - Abstract
Six pregnane steroids including one new compound namely 15β-hydroxypregna-4,20-dien-3-one (1), were isolated and structurally elucidated from the octocoral Carijoa riisei. The cytotoxic activity against a panel of eight human cancer cell lines of isolated compounds was also evaluated by SRB method. As the results, 18-acetoxypregna-1,4,20-trien-3-one (5) showed significant cytotoxicity against all the tested cell lines with the IC50 values from 22.29 ± 1.47 to 48.73 ± 3.93 μM, whereas 15β-acetoxypregna-1,4,20-trien-3-one (3) and 20R-acetoxypregna-1,4-dien-3-one (6) only exhibited weak effect on KB cell line with IC50 values of 93.62 ± 7.32 and 71.38 ± 5.45 μM, respectively.
- Published
- 2017
- Full Text
- View/download PDF
22. Comparisons of sexual reproduction in Carijoa riisei (Cnidaria, Alcyonacea) in South Atlantic, Caribbean, and Pacific areas
- Author
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Erika M. S. Freitas, Cristiano Aparecido Chagas, Anne-Sophie Bergeron, André Maurício Melo Santos, Paula Braga Gomes, Carlos D. Pérez, and Taciana Martins Barbosa
- Subjects
Cnidaria ,biology ,Octocorallia ,ved/biology ,Ecology ,media_common.quotation_subject ,ved/biology.organism_classification_rank.species ,Aquatic Science ,biology.organism_classification ,Sexual reproduction ,Alcyonacea ,Carijoa riisei ,Caribbean region ,Reproductive biology ,Reproduction ,geographic locations ,media_common - Abstract
Soft corals show a wide variety of reproductive strategies, including both asexual and sexual reproduction which can influence macro-evolutionary processes. The octocoral Carijoa riisei has an ample geographical distribution in Pacific and southern Atlantic and also in Caribbean region. This species was considered invasive in Hawaii, and its capacity for rapid proliferation is recognized, but recent studies, however, have indicated that it appears to be native to the Indo-Pacific region. The present study examined the reproductive biology of C. riisei in the Atlantic basin. The results were then compared to previous studies of the same species from the Pacific (Hawaii) and Caribbean (Puerto Rico) regions to examine the hypothesis that the reproductive patterns of C. riisei populations are the same throughout its geographical distribution, independent of its native or non-native status. Samples were collected on a monthly basis from May/2007 to April/2008 at Porto de Galinhas (Pernambuco State, Brazil). This species was found to have similar reproduction patterns in Brazil, the Caribbean, and in Hawaii (a gonochoric reproductive pattern and continuous and asynchronous gamete release). The similarities of their traits contribute to its rapid proliferation and occupation of spaces left by other species, independent of its native or non-native status.
- Published
- 2014
23. Occurrence of Melibiose-Containing Glycosphingolipids in a Sample of a Sponge-Coral Association (Desmapsamma anchorata/Carijoa riisei)
- Author
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Vladimir A. Denisenko, Pavel S. Dmitrenok, Nguyen A. Hung, Tran Thi Thu Thuy, Dinh T. Ha, Pham Minh Quan, Pham Quoc Long, Olesya S. Malyarenko, Elena A. Santalova, and A. L. Drozdov
- Subjects
Stereochemistry ,Proton Magnetic Resonance Spectroscopy ,ved/biology.organism_classification_rank.species ,Bioengineering ,Fatty Acids, Nonesterified ,Mass spectrometry ,Biochemistry ,Gas Chromatography-Mass Spectrometry ,Glycosphingolipids ,chemistry.chemical_compound ,Glycolipid ,Cerebrosides ,Carijoa riisei ,Cell Line, Tumor ,Animals ,Humans ,Carbon-13 Magnetic Resonance Spectroscopy ,Melibiose ,Molecular Biology ,Chromatography, High Pressure Liquid ,Cell Proliferation ,Biological Products ,Chromatography, Reverse-Phase ,biology ,Chemistry ,ved/biology ,Esters ,Biological activity ,General Chemistry ,General Medicine ,Marine invertebrates ,Anthozoa ,biology.organism_classification ,Sphingolipid ,Porifera ,Sponge ,Molecular Medicine ,Drug Screening Assays, Antitumor ,Sugars ,Biomarkers - Abstract
In our research on biologically active compounds from Vietnamese marine invertebrates, rare melibiose-containing glycosphingolipids were found in a sample of a sponge-coral association (Desmapsamma anchorata/Carijoa riisei). Melibiosylceramides were analyzed as constituents of some multi-component RP-HPLC fractions, and the structures of 14 new (1b, 3b, 4a-4c, 6a-6c, 8b, 9a, 9b, 10b, 11a, 11b) and five known (2b, 5a-5c, 7b) natural compounds were elucidated using NMR, mass spectrometry, optical rotation, and chemical transformations. These α-d-Galp-(1→6)-β-d-Glcp-(1 ↔ 1)-ceramides (presumably sponge-derived compounds) were shown to contain phytosphingosine-type n-t17:0 (1), (6E)-n-t17:1 (2), i-t17:0 (3), n-t18:0 (4), (6E)-n-t18:1 (5), i-t18:0 (6), (6E)-i-t18:1 (7), i-t19:0 (8), (6E)-i-t19:1 (9), ai-t19:0 (10), and (6E)-ai-t19:1 (11) backbones N-acylated with saturated straight-chain (2R)-2-hydroxy C21 (a), C22 (b), and C23 (c) acids. Characteristic trends in the fragmentations of the terminal parts of tetraacetylated normal-chain and iso- and anteiso-branched sphingoid bases were observed using GC/MS. The total sum of melibiosylceramides and compound 5b caused a reduction in colony formation of human melanoma cells.
- Published
- 2019
24. Sponges associated with octocorals in the Indo-Pacific, with the description of four new species
- Author
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Giorgio Bavestrello, Daniel Wagner, Daniela Pica, Carlo Cerrano, Barbara Calcinai, and Marco Bertolino
- Subjects
Phenotypic plasticity ,biology ,Ecology ,ved/biology ,ved/biology.organism_classification_rank.species ,Biodiversity ,biology.organism_classification ,Sponge ,Chondropsis ,Habitat ,Carijoa riisei ,Anthozoa ,Animal Science and Zoology ,Ecology, Evolution, Behavior and Systematics ,Indo-Pacific - Abstract
Sponges are characterised by high levels of phenotypic plasticity, thus allowing the same species to live in different habitats by taking different shapes. Here we describe 28 sponge species associated with the octocorals Carijoa riisei, Paratelesto rosea and Alertigorgia hoeksemai in Indonesia, Hawai’i and Vietnam, including four species that are new to science (Chondropsis subtilis, Hymedesmia (Hymedesmia) spinata, Hymedesmia (Stylopus) perlucida, Mycale (Aegogropila) furcata). Moreover, a large proportion of the described sponge species (21.4%) represent new records for the studied areas (Indonesia and Hawai’i). In total, we have studied 47 colonies of C. riisei associated with 24 sponge species, 5 colonies of P. rosea associated with 4 species and one colony of A. hoeksemai associated with one sponge species. Collectively, these examples of associations highlight the importance of epibiosis as a biodiversity enhancing process.
- Published
- 2013
25. Colour diversification in octocorals based on conjugated polyenes: A Raman spectroscopic view
- Author
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Luiz Fernando C. de Oliveira, Maria Edwiges R. de Oliveira, Howell G. M. Edwards, Felipe Dias dos Reis, Beatriz G. Fleury, Vanessa E. de Oliveira, and Lenize F. Maia
- Subjects
Chemistry ,ved/biology ,Stereochemistry ,ved/biology.organism_classification_rank.species ,Diadinoxanthin ,Muricea atlantica ,Conjugated system ,Pigment ,symbols.namesake ,chemistry.chemical_compound ,Carijoa riisei ,Raman band ,visual_art ,visual_art.visual_art_medium ,symbols ,General Materials Science ,Raman spectroscopy ,Spectroscopy ,Renilla muelleri - Abstract
Polyenic pigments in octocorals have been investigated by Raman spectroscopy using laser excitation at 532, 785 and 1064 nm. The spectral features suggest the structural nature of carotenoids from Phyllogorgia dilatata, Leptogorgia punicea, Muricea atlantica, Carijoa riisei and conjugated polyenals from L. punicea, L. setacea, Muricea flamma and Renilla muelleri. The observed vibrational bands at ca. 1540–1520 ν1(C=C), 1159 ν2(C–C) and 1005 cm−1 ρ3(C–CH3) were assigned to carotenoids, whereas the identification of non-methylated conjugated polyenals have been proposed due to two major Raman bands at ca. 1500 and 1120 cm-1, assigned to ν(C=C) and ν(C–C), respectively. Copyright © 2012 John Wiley & Sons, Ltd.
- Published
- 2012
26. PRESENCIA DE LOS OCTOCORALES STYLATULA DIADEMA BAYER (PENNATULACEA) Y CARIJOA RIISEI (DUCHASSAING Y MICHELOTTT) (TELESTACEA) EN LA COSTA CARIBE COLOMBIANA
- Author
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Juan Armando and M Sánchez
- Subjects
geography ,geography.geographical_feature_category ,biology ,Range (biology) ,ved/biology ,Fauna ,ved/biology.organism_classification_rank.species ,Coral reef ,Aquatic Science ,Oceanography ,biology.organism_classification ,Rocky shore ,Waves and shallow water ,Carijoa riisei ,Animal Science and Zoology ,Diadema ,Bay ,Water Science and Technology - Abstract
Through SCUBA and skin diving various shallow water ecosystems (rocky shores, soft bottoms and coral reefs, 0-30 m deep) were surveyed to collect telestaceans and penatulaceans octocorals; the areas considered were Cartagena, the Rosario islands, Tierra Bomba island, Barú island, San Bernardo islands, Bushnell and Salmedina banks, Capurgana and Zapzurro harbours (8°20,-10°45, N; 75°50,-77°251 W), the Santa Marta area (11°14,50" N; 74°15, W) y and the Guajira (11 °56,58" N; 72°16'18" W), Colombian Caribbean. Stylatula diadema Bayer (Virgulariidae: Pennatulacea) is first recorded for the Caribbean sea and has been found inhabiting soft sand bottoms between 25 and 30 m, at the outer end of Cartagena Bay and the Mangles Bank in San Bernardo islands. The geographic distribution of Carijoa riisei (Duchassaing y Michelotti) (Telestidae: Telestacea) was widen from the Caribbean and Colombia, it has been found in a broad bathymetric range (0.5-30 m) in all the habitats surveyed. Few records of telestaceans and pennatulaceans in this region, as in the rest of the Caribbean, suggest that the octocorallian fauna is mostly represented by gorgonians than by other orders, and shows an inverse relationship with the Indopacific fauna, where the alcyonaceans are the dominant order.
- Published
- 2016
27. DIVERSIDAD, ABUNDANCIA Y AMENAZAS DE LOS OCTOCORALES DE LA ISLA MALPELO, PACÍFICO ORIENTAL TROPICAL, COLOMBIA
- Author
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Juan A. Sánchez, Luisa F. Dueñas, Carlos E. Gómez, and Dairo Escobar
- Subjects
0106 biological sciences ,Invasive species ,Frequency of occurrence ,ved/biology ,010604 marine biology & hydrobiology ,Pacifigorgia ,ved/biology.organism_classification_rank.species ,High mortality ,Zoology ,Aquatic Science ,Biology ,Leptogorgia ,Oceanography ,biology.organism_classification ,010603 evolutionary biology ,01 natural sciences ,Abundance ,Carijoa riisei ,Abundance (ecology) ,Dominance (ecology) ,Animal Science and Zoology ,Reefs (coral) ,Species diversity ,Water Science and Technology - Abstract
Durante expediciones a la isla Malpelo en 2009 y 2010, se exploró la diversidad, abundancia y estado de los octocorales. Se encontraron siete especies de octocorales: Leptogorgia alba, Pacifigorgia cf. lacerata, Pacifigorgia sp.1 y Pacifigorgia sp.2, Muricea cf. fruticosa, Muricea sp. y la especie invasora Carijoa riisei. Los octocorales forman densas agregaciones en paredes y escarpes rocosos, con su mayor abundancia entre 10 y 20 m, alcanzando densidades máximas de hasta 20 colonias m-2. La especie más abundante fue Pacifigorgia cf. lacerata, con más de un 60 % de predominio en número y una frecuencia de aparición del 100 % para todos los sitios visitados. Para la mayoría de los sitios se determinó la existencia de tres zonas bien definidas de acuerdo a la profundidad. Una zona profunda entre 25 y 40 m, con dominancia exclusiva de L. alba, una estructura somera entre 7 y 20 m, con dominancia de Pacifigorgia spp. y una zona de transición comprendida entre 18 y 25 m, con una mezcla de L. alba y P. cf. lacerata, principalmente. De manera sorpresiva, durante noviembre de 2009 se encontraron poblaciones de Pacifigorgia y Leptogorgia visiblemente afectadas por enfermedades de posible origen fúngico. Después, en febrero de 2010, se visitaron de nuevo las mismas poblaciones de octocorales, en las que se constató una mortalidad de hasta 66 % de las colonias en algunas localidades. Leptogorgia se encontró notablemente menguada en el sector de El Arrecife, mientras que Pacifigorgia cf. lacerata tuvo mortalidades destacadas en La Nevera y El Freezer, y sus colonias se recuperaron en el sector de El Arrecife. Se encontró una disminución drástica de la incidencia de enfermedades para julio 2010, con porcentajes de colonias enfermas menores al 10 %. La especie invasora C. riisei fue observada en La Catedral y el bajo del Monstruo. De esta forma, este estudio amplía considerablemente el conocimiento sobre los octocorales de la isla Malpelo, y es la primera alarma sobre posibles amenazas a sus poblaciones locales, como lo son las enfermedades fúngicas y el octocoral invasor C. riisei. During three expeditions to the island (2009 and 2010), the diversity, abundance and status of octocorals were explored. Seven species of octocorals were recorded: Leptogorgia alba, Pacifigorgia cf. lacerata, Pacifigorgia sp.1 y Pacifigorgia sp.2, Muricea cf. fruticosa, Muricea sp., and the invasive species Carijoa riisei. Octocorals form dense aggregations in rocky walls and cliffs, with higher abundances between 10 and 20 m, reaching up to 20 colonies m-2. The most abundant species was Pacifigorgia cf. lacerata with a dominance of more than 60 % and a frequency of occurrence of 100 % for all visited sites. According to depth, three well-defined zones were determined for most sites. A deep zone between 25 and 40 m with an exclusive dominance of L. alba, a shallow assemblage between 7 and 20 m dominated by Pacifigorgia spp., and a transition zone between 18 and 25 m with a mixture of L. alba and P. cf. lacerata. Surprisingly, during November 2009, diseases of possible fungal origin visibly affected populations of Leptogorgia and Pacifigorgia. Subsequently, during February 2010 the same populations of octocorals were monitored and up to 66 % of the colonies were already dead in some locations. Leptogorgia had a significant reduction at El Arrecife site, while Pacifigorgia cf. lacerata had high mortality at La Nevera and El Freezer sites, and a recovery in El Arrecife. There was a notable improvement in disease prevalence by July 2010 with less than 10 % of diseased colonies. The invasive species C. riisei was observed in La Catedral and El Monstruo bank. Thus, this information increases considerably the knowledge of octocorals on Malpelo Island and is the first warning of possible threats against local octocoral populations, such as fungal diseases and the invasive octocoral C. riisei. INVEMAR Published Octocorals; Coral diseases
- Published
- 2016
28. INVERTEBRADOS MARINOS ASOCIADOS CON LAS PLATAFORMAS DE GAS EN LA GUAJIRA (CARIBE COLOMBIANO)*
- Author
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Nadiezhda Santodomingo, Norella Cruz, Adriana Gracia C., Giomar Borrero, and Diana Patricia Báez
- Subjects
0106 biological sciences ,Ecology ,ved/biology ,Fauna ,ved/biology.organism_classification_rank.species ,010607 zoology ,Marine invertebrates ,Aquatic Science ,Biology ,Oceanography ,010603 evolutionary biology ,01 natural sciences ,Scuba diving ,Carijoa riisei ,Abundance (ecology) ,Animal Science and Zoology ,Species richness ,Water Science and Technology ,Global biodiversity ,Invertebrate - Abstract
The industrial and economic development of Colombia has expanded its limits towards the territorial sea in the search for new resources. The prospection and construction of infrastructures in the sea challenge new alternatives for the sustainable development of the country. The main goal of this study was to build a baseline inventory of the marine invertebrates associated to two gas platforms located offshore in La Guajira, at the northeastern Colombian Caribbean Sea: platforms A and B, sitting on sandy bottoms at 18 and 33 m depth, respectively. This inventory includes a total of 116 species of marine invertebrates that were collected by Scuba diving. Crustaceans had the greatest richness with 50 species, from which the infraorder Brachyura was the best represented with 10 families including approximately 44% of species. Mollusks comprised the second largest group with 29 species, followed by annelids with 14 species, sponges with 12 species, cnidarians with 7 species, and finally echinoderms with 4 species. Filter-feeding and sessile organisms dominated in abundance, while mobile species showed a larger number of species. The barnacles complex (Balanus spp.), the octocoral Carijoa riisei and sponges were the main components of the fouling fauna on the structures. Although there are no previous studies for the study area and the southern Caribbean, it is considered that the invertebrates community associated to gas platforms in La Guajira exhibit both high species richness and a large abundance of organisms.
- Published
- 2016
29. Resolving natural ranges and marine invasions in a globally distributed octocoral (genus Carijoa)
- Author
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Erik C. Franklin, Robert J. Toonen, Gregory T. Concepcion, Samuel E. Kahng, Steve L. Coles, and Marc W. Crepeau
- Subjects
geography ,Mitochondrial DNA ,geography.geographical_feature_category ,Ecology ,ved/biology ,Coral ,ved/biology.organism_classification_rank.species ,Introduced species ,Aquatic Science ,Biology ,Invasive species ,Genus ,Carijoa riisei ,Archipelago ,geographic locations ,Ecology, Evolution, Behavior and Systematics ,Isolation by distance - Abstract
The first published report of the snowflake coral in Hawai'i comes from Pearl Harbor in 1972; subsequent identification as the Caribbean octocoral Carijoa riisei led to the general conclusion that it was introduced to Hawai'i from a Caribbean source. In an attempt to confirm the source of the Hawaiian population, we used mitochondrial (mtDNA) and nuclear (nDNA) sequence data to com- pare Hawaiian populations with samples of Carijoa (N = 244) collected worldwide. In addition, cumu- lative vessel traffic patterns from 1940-1979 were compiled for the Pacific Ocean to determine mar- itime connectivity to and from Hawai'i during the assumed time of introduction. Carijoa sampled from throughout Hawai'i (N = 94) share none of the Caribbean mtDNA haplotypes and only a single nDNA allele (0 of 28 and 1 of 27, respectively), indicating that the Hawaiian populations derive from Indo-Pacific rather than Caribbean-Atlantic origins. Furthermore, both mtDNA and nDNA show sig- nificant isolation-by-distance patterns overall and among the Pacific and Hawaiian sampling regions. These data indicate that Carijoa is native to the Indo-Pacific. Published reports of geographically wide-ranging invasions of Carijoa throughout the Pacific appear unfounded because our global sam- pling shows higher diversity in mtDNA (He = 0.87; ! = 0.0023) and nDNA (D = 0.91; ! = 0.042) through- out the Pacific relative to the Caribbean-Atlantic, indicating long evolutionary presence of Carijoa in the region. Our data clearly refute a Caribbean origin for Carijoa in the Hawaiian Archipelago, and indicate that the genus Carijoa is native to the Pacific and in need of further taxonomic evaluation.
- Published
- 2010
30. Observations on the life history and feeding ecology of a specialized nudibranch predator (Phyllodesmium poindimiei), with implications for biocontrol of an invasive octocoral (Carijoa riisei) in Hawaii
- Author
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Samuel E. Kahng, Robert J. Toonen, and Daniel Wagner
- Subjects
biology ,Ecology ,ved/biology ,ved/biology.organism_classification_rank.species ,Biological pest control ,Zoology ,Nudibranch ,Aquatic Science ,biology.organism_classification ,Invasive species ,Predation ,Carijoa riisei ,Gastropoda ,Mollusca ,Predator ,Ecology, Evolution, Behavior and Systematics - Abstract
The azooxanthellate octocoral, Carijoa riisei (Duchassaing and Michelotti, 1860) has spread throughout the Main Hawaiian Islands over the last 40 years proliferating in abundance. Given the rapid proliferation and ecological impact of the octocoral in Hawaii, there is interest in using the aeolid nudibranch Phyllodesmium poindimiei [Risbec, J., 1928. Contribution a l'etude des nudibranches Neo-Caledoniens. Faune des Colonies Francaises 2: 1–328], a specialized predator of Carijoa sp. in southern Australia, as a potential biocontrol agent. Using the nudibranch for biocontrol of C. riisei warrants examination of its life history and effectiveness at controlling its prey. The specialized nature of P. poindimiei predation is confirmed and some of its life history characteristics are described. The aeolid exhibits an approximately annual life cycle, has planktotrophic development and spawns continuously throughout the year, with no evidence of lunar patterns. However, the nudibranch was not successful at controlling C. riisei populations in any experimental feeding trial. Even under high nudibranch densities in aquaria, predation is incomplete, because portions of C. riisei are left unharmed. Additionally, sponge overgrowth suppresses nudibranch predation on the octocoral, and the portunid crab Thalamita integra is identified as a predator of P. poindimiei . Together these factors indicate that biocontrol of C. riisei using P. poindimiei should not be pursued.
- Published
- 2009
31. Trophic ecology of the octocoral Carijoa riisei from littoral of Pernambuco, Brazil. I. Composition and spatio-temporal variation of the diet
- Author
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Paula Braga Gomes, Jean-Philippe Naud, Carlos D. Pérez, Ana Karla F Lira, and André L. Santos
- Subjects
education.field_of_study ,Biomass (ecology) ,Ecology ,ved/biology ,Population ,ved/biology.organism_classification_rank.species ,Aquatic Science ,Biology ,Zooplankton ,Benthic zone ,Abundance (ecology) ,Carijoa riisei ,Phytoplankton ,Species richness ,education - Abstract
Octocorals are common components of sublittoral benthic communities in temperate, tropical and polar areas. However, their natural diets and feeding rates are poorly known. The aim of this study was to determine qualitatively–quantitatively the diet of the octocoral Carijoa riisei (snowflake coral) and analyse the distribution and diet composition throughout a whole year at two different depths of the same environment. Hence, 30 colonies were haphazardly sampled for gastric content analysis from 2 and 6 m deep (surface and bottom) at Porto de Galinhas beach, Pernambuco, Brazil, in January, June and October 2006, and March 2007. Relative and absolute abundance, richness and occurrence frequency per gastric cavity were assessed. Shannon–Wiener index (H′) and evenness were also calculated. Items were classified according to the occurrence frequency. The biovolume of preys was estimated from meristic data, and from the biovolume were then estimated wet weight, dry weight and organic carbon. Weighed biovolume (WBV), which relates biomass and abundance, was assessed to estimate the real contribution of preys to octocoral diet. Results attested the presence of 102 phytoplankton and 25 zooplankton taxa. Mean prey size was 112.7 µm. Diatoms showed the greater richness with 88 morphotypes. Only cyanophytes and diatoms, from phytoplankton, were very common (>70%). As a whole, phytoplankton was also the most abundant group (83%), followed by crustacean fragments (5%). Thus, although having low biovolume (3×10−3), the phytoplankton showed the highest WBV (44.5%). Feeding items richness was homogeneous throughout the study year and in both depths, while abundance showed significant seasonal and bathymetric fluctuation. The t-test (Hutchinson) found significant differences for prey item diversity related to depth and season. From the analysis, it is possible to conclude that the C. riisei population of the Brazilian north-eastern coast is polyphagous, but shows preference for phytoplanktonic elements and small prey. Therefore, the species behaves as a passive suspensivorous feeder with equitable biomass contribution from phytoplankton and zooplankton.
- Published
- 2008
32. An alternative to ITS, a hypervariable, single-copy nuclear intron in corals, and its use in detecting cryptic species within the octocoral genus Carijoa
- Author
-
Samuel E. Kahng, D. Wagner, Gregory T. Concepcion, Marc W. Crepeau, and Robert J. Toonen
- Subjects
Mitochondrial DNA ,Species complex ,Nuclear gene ,biology ,ved/biology ,Ecology ,ved/biology.organism_classification_rank.species ,Locus (genetics) ,Aquatic Science ,biology.organism_classification ,Analysis of molecular variance ,Carijoa riisei ,Evolutionary biology ,Pocillopora ,Gene - Abstract
Here we report a highly variable nuclear marker that can be used for both soft and stony corals. Primers that amplify a ∼177 bp fragment from the nuclear gene encoding the 54 kDa subunit of the signal recognition particle (SRP54) were developed for the octocoral genus Carijoa. Cloning results from 141 individuals suggest that this hypervariable nuclear locus is a single-copy gene. Sequencing revealed a potential cryptic species previously thought to be Carijoa riisei. Results from an Analysis of Molecular Variance (AMOVA) based on mitochondrial DNA (mtDNA) explained 33% of the variation (Fst = 0.54). Using previously reported degenerate primers for SRP54, high levels of sequence variation were found at this locus across both scleractinian and octocorals. For example, pairwise sequence divergence within octocorals was ∼8–13 times greater with SRP54 than with mtDNA, and, up to 2.8% pairwise sequence divergence was found in SRP54 among individuals of Pocillopora whereas no variation at all was found in mtDNA markers. This case study with the octocoral C. riisei shows that variation in SRP54 appears sufficient to address questions of phylogeography as well as systematics of closely related species.
- Published
- 2007
33. Isolamento e atividades biológicas de produtos naturais das esponjas monanchora arbuscula, aplysina sp. petromica ciocalyptoides e topsentia ophiraphidites, da ascídia didemnum ligulum e do octocoral carijoa riisei
- Author
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Eduardo Hajdu, Glaucius Oliva, Márcio Luis Andrade e Silva, Otavio Henrique Thiemann, Yohandra Reyes Torres, Maria Teresa do Prado Gambardella, Célio Lopes Silva, Manoel Odorico de Moraes, Marcia S. C. Melhem, Bruno C. Cavalcanti, Solange Peixinho, Rosana M. Rocha, Eli F. Pimenta, Ana O. de Souza, Miriam H. Kossuga, Simone Possedente de Lira, Roberto G. S. Berlinck, Fabio C. S. Galetti, Andre G. Tempone, Andréa Mendes do Nascimento, Gislene G. F. Nascimento, and Cláudia Pessoa
- Subjects
biology ,Petromica ciocalyptoides ,ved/biology ,Ecology ,ascidian ,ved/biology.organism_classification_rank.species ,Phosphoribosyl transferase ,General Chemistry ,Marine invertebrates ,biology.organism_classification ,Antimicrobial ,octocoral ,Microbiology ,Sponge ,Dibromotyrosine ,Carijoa riisei ,medicine ,Didemnum ,marine sponge ,medicine.drug - Abstract
The investigation of extracts from six species of marine invertebrates yielded one new and several known natural products. Isoptilocaulin from the sponge Monanchora aff. arbuscula displayed antimicrobial activity at 1.3 mg/mL against an oxacillin-resistant strain of Staphylococcus aureus. Five inactive known dibromotyrosine derivatives, 2 6, were isolated from a new species of marine sponge, Aplysina sp. The sponges Petromica ciocalyptoides and Topsentia ophiraphidites yielded the known halistanol sulfate A (7) as an inhibitor of the antileishmanial target adenosine phosphoribosyl transferase. The ascidian Didemnum ligulum yielded asterubin (10) and the new N,N-dimethyl-O-methylethanolamine (11). The octocoral Carijoa riisei yielded the known 18-acetoxypregna-1,4,20-trien-3-one (12), which displayed cytotoxic activity against the cancer cell lines SF295, MDA-MB435, HCT8 and HL60.
- Published
- 2007
34. Brittle stars (Echinodermata: Ophiuroidea) associated with the octocoral Carijoa riisei (Cnidaria: Anthozoa) from the littoral of Pernambuco, Brazil
- Author
-
Carlos D. Pérez, B.M. Neves, and E.J.B. Lima
- Subjects
Cnidaria ,Wet season ,biology ,ved/biology ,Ecology ,Ophiactis savignyi ,ved/biology.organism_classification_rank.species ,Aquatic Science ,biology.organism_classification ,Carijoa riisei ,Ophiotrichidae ,Anthozoa ,Dry season ,Coelenterata - Abstract
The present work records for the first time the association between ophiuroids and the octocoral Carijoa riisei. Carijoa riisei is a colonial octocoral very abundant in the littoral of Pernambuco (Brazil), with growth by creeping stolons with an arborescent structure creating an optimal environment for epibionts. The objectives of the work were to identify the species of Ophiuroidea associated with C. riisei, and to verify the existence of seasonality through the density, abundance and frequency of sampled taxa. Due to the known relationship between the ophiuroids and sponges related in the literature, the sponges founded associated with C. riisei were recorded. Seasonal samples of the beaches of Porto de Galinhas and Guadalupe were realized. In Guadalupe, 39 and 21 ophiuroids (dry and rainy seasons respectively) belonging to the families Ophiactidae (Ophiactis savignyi, Ophiactis lymani) and Ophiotrichidae (Ophiotrhix angulata) were identified. Ophiactis savignyi stood out in all the analysed stations (48.72% in dry season and 52.38% in rainy season). The average density of the ophiuroids was 10.74 ind/100 g of C. riisei, varying from 12.56 ind/100 g in the dry season to 8.92 ind/100 g, in the rainy season. Amongst the species of ophiuroids recorded in the samples, O. savignyi showed 80% and 100% frequency of occurrence in the dry and the rainy seasons, respectively, and O. lymani showed 80% during the dry season. The presence of O. lymani in Guadalupe constitutes the first record in Pernambuco state. Taking into account that all the ophiuroids collected in Guadalupe were considered juveniles (1–3 mm of disc diameter), the microhabitat created by C. riisei may be utilized as a recruitment place for some ophiuroids. No ophiuroids were found at Porto de Galinhas beach, just as for sponges. On the other hand, the ophiuroids were always found with sponges in Guadalupe beach. For this reason, the ecological relation of the ophiuroids with C. riisei could be observed as an occasional relation, in the way that the octocoral supplies a support structure to the growth of the many sponges that have given a favourable habitat to shelter ophiuroids.
- Published
- 2007
35. Vertical zonation of megabenthic taxa on a deep photosynthetic reef (50–140 m) in the Au’au Channel, Hawaii
- Author
-
Samuel E. Kahng and Christopher Kelley
- Subjects
geography ,geography.geographical_feature_category ,ved/biology ,Ecology ,ved/biology.organism_classification_rank.species ,Mesophotic coral reef ,Antipathes ,Coral reef ,Aquatic Science ,Biology ,Intertidal ecology ,biology.organism_classification ,Light intensity ,Oceanography ,Benthic zone ,Carijoa riisei ,Halimeda - Abstract
This study surveyed several locations at depths between 50 and 140 m within the Au’au Channel, Hawaii to characterize the deep reef habitat and determine the depth distribution and relative abundance of the dominant, habitat forming megabenthic taxa. In the Au’au Channel, the depth distribution of megabenthic taxa exhibited a pattern of vertical zonation with relatively few taxa dominating each zone. Macroalgae particularly Halimeda spp. and to a lesser extent scleractinian corals Leptoseris spp. were dominant between 50 and 80 m; Leptoseris spp. were dominant between 80 and 90 m as macroalgae decreased in abundance; the invasive octocoral Carijoa riisei was dominant between 90 and 100 m primarily on rugose features; Antipathes spp. and Leptoseris spp. were dominant between 100 and 120 m on exposed fossil reef; and small wire corals were dominant between 120 and 140 m. In general, the percentage of live benthic cover decreased with depth, particularly below 90 m where a large majority of the area was uncolonized, soft substrata. The gradient of downwelling light intensity appears to play a major role in regulating the depth distribution of photosynthetic organisms, skilophilous organisms, and other benthic fauna, which compete for space with dominant photosynthetic species. The depth of the seasonal thermocline also appears to play an important role in limiting the distribution of tropical benthic species.
- Published
- 2007
36. New invertebrate host records (Porifera and Cnidaria) for some caridean shrimps in estuaries of north-eastern Brazil
- Author
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Alexandre Oliveira Almeida, Guidomar Oliveira Soledade, Josivete Pinheiro Santos, Patricia Souza Santos, and Carlos D. Pérez
- Subjects
Cnidaria ,Axinellidae ,Ecology ,biology ,ved/biology ,ved/biology.organism_classification_rank.species ,Zoology ,Aquatic Science ,Oceanography ,biology.organism_classification ,Crustacean ,Shrimp ,Fishery ,Caridea ,Carijoa riisei ,biology.animal ,Palaemonidae ,Ecology, Evolution, Behavior and Systematics ,Alpheidae - Abstract
We report for the first time the association of some caridean shrimps with the octocoral Carijoa riisei (Cnidaria: Clavulariidae) and the sponge Dragmacidon reticulatum (Porifera: Axinellidae), in estuaries from north-eastern Brazil. The alpheid shrimp Synalpheus apioceros, Synalpheus fritzmuelleri, Alpheus formosus, Alpheus carlae and the palaemonid Cuapetes americanus are reported in association with Carijoa riisei. The latter two species, plus the alpheid Alpheus buckupi, are recorded in association with D. reticulatum.
- Published
- 2015
37. Associated community with the zoanthid Palythoa caribaeorum (Duchassaing & Michelotti, 1860) (Cnidaria, Anthozoa) from littoral of Pernambuco, Brazil
- Author
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André Maurício Melo Santos, D.A. Vila-Nova, and Carlos D. Pérez
- Subjects
Cnidaria ,food.ingredient ,biology ,ved/biology ,Ecology ,ved/biology.organism_classification_rank.species ,Aquatic Science ,biology.organism_classification ,food ,Carijoa riisei ,Anthozoa ,Littoral zone ,Palythoa ,Species richness ,Zoantharia ,Coelenterata - Abstract
The community associated with the zoanthid Palythoa caribaeorum on shores (Porto de Galinhas and Guadalupe) in northeastern Brazil were analysed. Seasonal samples (dry and wet) were made in both beaches throughout one year. This preliminary study identified 28 taxa and recognized two modes of existence, endobionts (three taxa) and hypobionts (25 taxa). Among hypobionts two patterns of ecological relationships were found: those fixed to the rocky substrata or on the base of the zoanthid colony (11 taxa) and the free-living (14 taxa). In some of these relationships, the organisms observed (Carijoa riisei and barnacles), were under the mat as victims of the zoanthid overgrowth (spatial competition). The more abundant taxa were: Mollusca (28%), Crustacea (25%), Nematoda (24%) and Polychaeta (16%). Among all samples species richness, abundance, similarity and diversity were different, especially the dry season of Porto de Galinhas. Porto de Galinhas in the dry season showed the lowest diversity with only one record. After evaluating the different ecological parameters of the P. caribaeorum-associated community, we conclude that the Guadalupe shore maintains annual homogeneity, while Porto de Galinhas shore is notably different during the year. The only environmental difference between them seems to be the effect of human activity from tourism (reef walkers, fishery and diving), that could be directly and indirectly affecting some ecological parameters of this zoanthid-associated community, such as abundance, richness and diversity of species.
- Published
- 2005
38. Nonindigenous Species Introductions on Coral Reefs: A Need for Information
- Author
-
S. L. Coles and Lucius G. Eldredge
- Subjects
geography ,Multidisciplinary ,geography.geographical_feature_category ,ved/biology ,Ecology ,fungi ,ved/biology.organism_classification_rank.species ,technology, industry, and agriculture ,Tropics ,Biota ,Coral reef ,biochemical phenomena, metabolism, and nutrition ,Biology ,Fishery ,Carijoa riisei ,population characteristics ,Aquaculture of coral ,Environmental issues with coral reefs ,Coral reef protection ,Reef ,geographic locations - Abstract
Nonindigenous species invasions have caused disruptions of native communities and detrimental economic impacts to fisheries in many temperate marine areas. However, comparatively little information exists for tropical regions, and even less is known about occurrences and impacts of nonindigenous species on coral reefs. Studies in the Tropics to date have mostly been limited to surveys in harbors and ports where corals and reef organisms are usually missing or rare and environmental conditions are usually quite different from those found on coral reefs. The few studies available for coral reefs suggest that nonindigenous species are thus far a relatively minor component of the total biota, but some species, especially introduced red algae, can be invasive and dominate reef areas. With limited information available, there is a need for studies of the occurrence and impacts of nonindigenous species that are focused on coral reef environments. This review summarizes the information for nonindigenous species from harbors, embayments, and coral reef surveys in the tropical Pacific and outlines procedures for studies to detect species introductions.
- Published
- 2002
39. Impact of an alien octocoral, Carijoa riisei, on black corals in Hawaii
- Author
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Kahng, Samuel E. and Grigg, Richard W.
- Published
- 2005
- Full Text
- View/download PDF
40. Marine Communities on Oil Platforms in Gabon, West Africa: High Biodiversity Oases in a Low Biodiversity Environment
- Author
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Enric Ballesteros, Mike Fay, Alan M. Friedlander, Enric Sala, Waitt Foundation, National Geographic Society, and Wildlife Conservation Society
- Subjects
Artificial Ecosystems ,Conservation of Natural Resources ,ved/biology.organism_classification_rank.species ,Biodiversity ,lcsh:Medicine ,Marine Biology ,Biology ,Freshwater ecosystem ,Ecosystems ,Marine Conservation ,Equatorial ocean regions ,Carijoa riisei ,Marine Monitoring ,Bodies of water ,Oceans ,Animals ,Seawater ,Gabon ,lcsh:Science ,Community Structure ,Atlantic Ocean ,Conservation Science ,Marine biology ,geography ,Multidisciplinary ,geography.geographical_feature_category ,Ecology ,ved/biology ,lcsh:R ,Ecology and Environmental Sciences ,Marine Ecology ,Biology and Life Sciences ,Tubastraea ,Coral reef ,biology.organism_classification ,Marine and aquatic sciences ,Earth sciences ,Africa, Western ,Community Ecology ,Biogeography ,lcsh:Q ,Marine protected area ,Coastal Ecology ,Global biodiversity ,Research Article - Abstract
The marine biodiversity of Gabon, West Africa has not been well studied and is largely unknown. Our examination of marine communities associated with oil platforms in Gabon is the first scientific investigation of these structures and highlights the unique ecosystems associated with them. A number of species previously unknown to Gabonese waters were recorded during our surveys on these platforms. Clear distinctions in benthic communities were observed between older, larger platforms in the north and newer platforms to the south or closer to shore. The former were dominated by a solitary cup coral, Tubastraea sp., whereas the latter were dominated by the barnacle Megabalanus tintinnabulum, but with more diverse benthic assemblages compared to the northerly platforms. Previous work documented the presence of limited zooxanthellated scleractinian corals on natural rocky substrate in Gabon but none were recorded on platforms. Total estimated fish biomass on these platforms exceeded one ton at some locations and was dominated by barracuda (Sphyraena spp.), jacks (Carangids), and rainbow runner (Elagatis bipinnulata). Thirty-four percent of fish species observed on these platforms are new records for Gabon and 6% are new to tropical West Africa. Fish assemblages closely associated with platforms had distinct amphi-Atlantic affinities and platforms likely extend the distribution of these species into coastal West Africa. At least one potential invasive species, the snowflake coral (Carijoa riisei), was observed on the platforms. Oil platforms may act as stepping stones, increasing regional biodiversity and production but they may also be vectors for invasive species. Gabon is a world leader in terrestrial conservation with a network of protected areas covering >10% of the country. Oil exploration and biodiversity conservation currently co-exist in terrestrial and freshwater ecosystems in Gabon. Efforts to increase marine protection in Gabon may benefit by including oil platforms in the marine protected area design process., This work was funded by the Waitt Foundation, Blancpain, Davidoff Cool Water, National Geographic Society, and the Wildlife Conservation Society. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
- Published
- 2014
41. New Strategies for Identifying Natural Products of Ecological Significance from Corals
- Author
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Joel C. Creed, Bruno G. Lages, Beatriz G. Fleury, Luiz Fernando Cappa de Oliveira, and Lenize F. Maia
- Subjects
In situ ,biology ,ved/biology ,Coral ,ved/biology.organism_classification_rank.species ,Method of analysis ,Leptogorgia ,biology.organism_classification ,Chemical species ,symbols.namesake ,Carijoa riisei ,Botany ,Ecological significance ,symbols ,Raman spectroscopy - Abstract
Coral tissues commonly contain high concentrations of secondary or special metabolites. These chemicals are identified by spectroscopic analysis after extraction and purification procedures. A new alternative to the conventional techniques is the use of Raman spectroscopy, which is a nondestructive method of analysis suitable to in situ studies of biomaterials as well as chemical compounds. This approach has been successfully demonstrated with corals from the Brazilian coast. Diverse ecological roles have been investigated in crude extracts and pure compounds from the indigenous species Phyllogorgia dilatata , Leptogorgia punicea , L. violacea , and Carijoa riisei and the nonindigenous species Chromonephthea braziliensis , Tubastrea coccinea , and T. tagusensis . Compounds with possible roles in these bioactivities have been quickly characterized by Raman macro- and microspectroscopy: a feeding deterrent sterol from C. braziliensis ; carotenoids from L. violacea , C. riisei , P. dilatata , and Tubastrea spp.; and polyenals from Leptogorgia spp. and C. braziliensis and from purple spots in P. dilatata affected by purpling . Most of the chemical constituents could be identified in tissues and sclerites without the need for any previous treatment. Several Raman vibrational modes are used to correlate chemical species to a chemical substance. The polyenal biochromes could be identified by two “fingerprint” vibrational bands. A complementary analysis can be performed by Raman microimaging, which is a sensitive and selective method of investigating the distribution of compounds in both in situ and in vivo samples. The results obtained by the Raman microimaging studies of chemical compounds present in the surface of healthy and necrotic tissues of P. dilatata may be helpful in evaluating different stages and the extent of infection that causes purpling. Competition for space, antifouling defense, and chemical deterrence are the three main roles traditionally attributed to the chemically mediated bioactivity in corals. Raman spectroscopy may become a valuable nondestructive technique for monitoring the accumulation or production of metabolites during a biological interaction. It also allows information about the distribution and concentration as well as molecular information to be obtained in a very short period of time compared to the usual time and solvent-consuming separation procedures.
- Published
- 2014
42. Occurrence of Melibiose-Containing Glycosphingolipids in a Sample of a Sponge-Coral Association (Desmapsamma anchorata/Carijoa riisei).
- Author
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Santalova EA, Denisenko VA, Dmitrenok PS, Ha DT, Hung NA, Drozdov AL, Malyarenko OS, Thuy TTT, Quan PM, and Long PQ
- Subjects
- Animals, Biological Products isolation & purification, Biomarkers analysis, Carbon-13 Magnetic Resonance Spectroscopy, Cell Line, Tumor, Cell Proliferation drug effects, Cerebrosides chemistry, Cerebrosides pharmacology, Chromatography, High Pressure Liquid methods, Chromatography, Reverse-Phase methods, Drug Screening Assays, Antitumor, Esters, Fatty Acids, Nonesterified chemistry, Gas Chromatography-Mass Spectrometry, Glycosphingolipids chemistry, Glycosphingolipids pharmacology, Humans, Melibiose pharmacology, Proton Magnetic Resonance Spectroscopy, Sugars analysis, Anthozoa chemistry, Biological Products chemistry, Glycosphingolipids analysis, Melibiose analysis, Porifera chemistry
- Abstract
In our research on biologically active compounds from Vietnamese marine invertebrates, rare melibiose-containing glycosphingolipids were found in a sample of a sponge-coral association (Desmapsamma anchorata/Carijoa riisei). Melibiosylceramides were analyzed as constituents of some multi-component RP-HPLC fractions, and the structures of 14 new (1b, 3b, 4a-4c, 6a-6c, 8b, 9a, 9b, 10b, 11a, 11b) and five known (2b, 5a-5c, 7b) natural compounds were elucidated using NMR, mass spectrometry, optical rotation, and chemical transformations. These α-d-Galp-(1→6)-β-d-Glcp-(1 ↔ 1)-ceramides (presumably sponge-derived compounds) were shown to contain phytosphingosine-type n-t17:0 (1), (6E)-n-t17:1 (2), i-t17:0 (3), n-t18:0 (4), (6E)-n-t18:1 (5), i-t18:0 (6), (6E)-i-t18:1 (7), i-t19:0 (8), (6E)-i-t19:1 (9), ai-t19:0 (10), and (6E)-ai-t19:1 (11) backbones N-acylated with saturated straight-chain (2R)-2-hydroxy C
21 (a), C22 (b), and C23 (c) acids. Characteristic trends in the fragmentations of the terminal parts of tetraacetylated normal-chain and iso- and anteiso-branched sphingoid bases were observed using GC/MS. The total sum of melibiosylceramides and compound 5b caused a reduction in colony formation of human melanoma cells., (© 2019 Wiley-VHCA AG, Zurich, Switzerland.)- Published
- 2019
- Full Text
- View/download PDF
43. Identification of a novel antimicrobial peptide from Brazilian coast coral Phyllogorgia dilatata
- Author
-
Jose Tadeu Abreu de Oliveira, Débora O. Pires, Ludovico Migliolo, Loiane Alves de Lima, Anselmo J. Otero-González, Octavio L. Franco, Clovis Barreiro e Castro, Simoni Campos Dias, Ilka M. Vasconcelos, Carlos López-Abarrategui, and Eveline Ferreira Goncalves
- Subjects
Plexaurella ,food.ingredient ,Microorganism ,ved/biology.organism_classification_rank.species ,Antimicrobial peptides ,Molecular Sequence Data ,Biochemistry ,Microbiology ,food ,Structural Biology ,Carijoa riisei ,Animals ,Humans ,Amino Acid Sequence ,biology ,Bacteria ,ved/biology ,General Medicine ,Bacterial Infections ,biology.organism_classification ,Antimicrobial ,Anthozoa ,Anti-Bacterial Agents ,Palythoa ,Antibacterial activity ,Peptides ,Brazil - Abstract
The marine ecosystem is able to provide enormous biomolecule diversity that could be used for treatment of various diseases. In this highly competitive environment, organisms need chemical barriers to reduce or avoid microorganism contamination. Among the molecules that protect these animals the antimicrobial peptides (AMPs) are included. In the present study, crude extracts of coral coral specimens Carijoa riisei, Muriceopsis sulphurea, Neospongodes atlantica, Palythoa caribeorum, Phyllogorgia dilatata and Plexaurella grandiflora were challenged against multiple Grampositive and -negative bacteria showing different activities. P. dilatata crude extract showed the antibacterial activity, and was ammonium-sulfate (0-40%) fractionated, being able to control the growth of K. pneumoniae, S. flexineri and S. aureus. Rich-fraction was further purified by using Amicon® Ultra Centrifugal 10 kDa associated with reversed-phase HPLC chromatography (C18), producing the peptide named Pd-AMP1. Pd-AMP1 was able to inhibit S. aureus development. Mass spectrometry analyses showed a monoisotopic mass of 5372.66 Da and N-terminal sequence showed no significant match with databank. In this view, the prospecting of protein biomolecules and biotechnological potential from marine animals is still little explored and may serve as an alternative to common antibiotics.
- Published
- 2013
44. An Invasion of Snowflake Coral Carijoa riisei (Duchassaing and Michelotti 1860) in Indian Seas: Threats to Coral Reef Ecosystem
- Author
-
C. Raghunathan, R. Rajkumar, Ch. Satyanarayana, and K. Venkataraman
- Subjects
geography.geographical_feature_category ,Ecology ,ved/biology ,Coral ,ved/biology.organism_classification_rank.species ,Biota ,Context (language use) ,Coral reef ,Tropical Atlantic ,Fishery ,Geography ,Habitat ,Carijoa riisei ,Ecosystem - Abstract
Carijoa riisei is a shallow water fast growing zooxanthellate octocoral, native to the tropical Atlantic and Caribbean Sea. Since its first invasion discovered from Hawaii Islands in 1972, the species spreads across several countries. Presently this species is reported to occur in the coral reef ecosystems of Indian Seas. Carijoa riisei is typically found in a wide variety of habitats that provide shade, but in deeper water uninhibited by light and can be found on exposed hard substrate. Though the occurrence of this non-indigenous species invasion in Indian Seas is relatively minor component of the total biota, it is essential to prevent further spreading on the coral reef ecosystem by adopting effective managerial plans. When limited information is available on marine bioinvasion in tropical counties especially in India, there is an urgent need of study on the occurrence and impacts of non-indigenous species that are focused on coral reef environment as this ecosystem habors 25 % of total marine biodiversity and contribute 10 % fishery production. This chapter summarises the occurrence of Carijoa riisei in coral reefs, impacts and policies for bioinvasion in Indian context.
- Published
- 2013
45. Anti-Infective Pregnane Steroid from the Octocoral Carijoa riisei Collected in South Brazil
- Author
-
Rojo de Almeida, Maria Tereza, Tonini, Maiko L., Guimaraes, Tatiana, Bianco, Everson, Moritz, Maria I., Oliveira, Simone, Cabrera, Gabriela Myriam, Palermo, Jorge Alejandro, Regginato, Flavio, Steindel, Mario, and Schenkel, Eloir P.
- Subjects
Trypanosoma Cruzi ,Leishmania Brasiliensis ,Química Orgánica ,CIENCIAS MÉDICAS Y DE LA SALUD ,Octocoral ,Carijoa Riisei ,Antiprotozoal ,Pregnane Sterol ,Ciencias Químicas ,Ciencias de la Salud ,Parasitología ,CIENCIAS NATURALES Y EXACTAS - Abstract
SUMMARY. In the present work, fractions of the ethanolic crude extract of Carijoa riisei (Octocorallia) collected at South Brazil (Santa Catarina island) were tested against different bacterial, fungal and protozoal pathogens. The n-hexane fraction (HF) showed a moderate activity against S. aureus in the disk diffusion method, and inhibited 43.4 and 35.9 % the growing of T. cruzi epimastigotes and L. braziliensis promastigotes, respectively. The steroid pregna-1,4,20-trien-3-one was isolated from HF and presented in vitro antiprotozoal activity against the extracellular forms of the parasites at 50 μM, showing 50.4 % growth inhibition of L. braziliensis and 42.4 % growth inhibition of T. cruzi. Fil: Rojo de Almeida, Maria Tereza. Universidade Federal de Santa Catarina; Brasil Fil: Tonini, Maiko L.. Universidade Federal de Santa Catarina; Brasil Fil: Guimaraes, Tatiana. Universidade Federal de Santa Catarina; Brasil Fil: Bianco, Everson. Universidade Federal de Santa Catarina; Brasil Fil: Moritz, Maria I.. Universidade Federal de Santa Catarina; Brasil Fil: Oliveira, Simone. Universidade Federal de Santa Catarina; Brasil Fil: Cabrera, Gabriela Myriam. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad de Microanálisis y Métodos Físicos en Química Orgánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Unidad de Microanálisis y Métodos Físicos en Química Orgánica; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica; Argentina Fil: Palermo, Jorge Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad de Microanálisis y Métodos Físicos en Química Orgánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Unidad de Microanálisis y Métodos Físicos en Química Orgánica; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica; Argentina Fil: Regginato, Flavio. Universidade Federal de Santa Catarina; Brasil Fil: Steindel, Mario. Universidade Federal de Santa Catarina; Brasil Fil: Schenkel, Eloir P.. Universidade Federal de Santa Catarina; Brasil
- Published
- 2012
46. Antiprotozoan activity of Brazilian marine cnidarian extracts and of a modified steroid from the octocoral Carijoa riisei
- Author
-
Miriam H. Kossuga, Juliana Quero Reimão, Roberto G. S. Berlinck, Andre G. Tempone, and Alvaro Esteves Migotto
- Subjects
medicine.medical_treatment ,Trypanosoma cruzi ,ved/biology.organism_classification_rank.species ,Antiprotozoal Agents ,Pharmacology ,Steroid ,Nitric oxide ,Cell Line ,chemistry.chemical_compound ,Cnidaria ,Mice ,Parasitic Sensitivity Tests ,Carijoa riisei ,Cricetinae ,Botany ,medicine ,Animals ,Seawater ,Amastigote ,Cytotoxicity ,IC50 ,Leishmania ,Mice, Inbred BALB C ,General Veterinary ,biology ,Mesocricetus ,ved/biology ,General Medicine ,biology.organism_classification ,Anthozoa ,Trypanocidal Agents ,Infectious Diseases ,chemistry ,Insect Science ,Parasitology ,Steroids ,Intracellular ,Brazil - Abstract
In the present investigation, we have evaluated the antileishmanial and antitrypanosomal activity of methanolic crude extracts obtained from eight species of cnidarians and of a modified steroid isolated from the octocoral Carijoa riisei. The antileishmanial activity of cnidarians crude extracts showed 50% inhibitory concentration (IC50) values in the concentration range between 2.8 and 93.3 microg/mL. Trypomastigotes of Trypanosoma cruzi were less susceptible to the crude extracts, with IC50 values in the concentration range between 40.9 and 117.9 microg/mL. The steroid (18-acetoxipregna-1,4,20-trien-3-one) displayed a strong antileishmanial activity, with an IC50 value of 5.5 microg/mL against promastigotes and 16.88 microg/mL against intracellular amastigotes. The steroid also displayed mammalian cytotoxicity (IC50 of 10.6 microg/mL), but no hemolytic activity was observed at the highest concentration of 12.5 microg/mL. The antileishmanial effect of the steroid in macrophages suggested other mechanism than macrophage activation, as no upregulation of nitric oxide was observed. The antitrypanosomal activity of the steroid resulted in an IC50 value of 50.5 microg/mL. These results indicate the potential of cnidarian natural compounds as antileishmanial drug candidates.
- Published
- 2008
47. New cytotoxic sterol glycosides from the octocoral Carijoa (Telesto) riisei
- Author
-
Rosangela de A. Epifanio, William Fenical, and Lenize F. Maia
- Subjects
Magnetic Resonance Spectroscopy ,Stereochemistry ,In vitro cytotoxicity ,ved/biology.organism_classification_rank.species ,Saponin ,Pharmaceutical Science ,Antineoplastic Agents ,Pharmacognosy ,Biology ,Analytical Chemistry ,Cnidaria ,Carijoa riisei ,Drug Discovery ,Animals ,Glycosides ,Spectral data ,Pharmacology ,chemistry.chemical_classification ,ved/biology ,Organic Chemistry ,Glycoside ,Sterol ,Sterols ,Complementary and alternative medicine ,chemistry ,Biochemistry ,Molecular Medicine ,Human colon - Abstract
Two new steroidal glycosides, 3beta-O-(3'-O-acetyl-beta-D-arabinopyranosyl)-25xi-choles tan e-3beta, 5alpha,6beta,26-tetrol-26-acetate (riisein A, 2) and 3beta-O-(4'-O-acetyl-beta-D-arabinopyranosyl)-25xi-choles tan e-3beta, 5alpha,6beta,26-tetrol-26-acetate (riisein B, 3), were isolated from extracts of the Brazilian telestacean octocoral Carijoa (Telesto) riisei collected near Rio de Janeiro. The new glycosides co-occur with the polyhydroxy sterol, 25xi-cholestane-3beta,5alpha,6beta, 26-tetrol-26-acetate (1), an inseparable diastereomeric mixture previously reported from Telesto riisei collected in Micronesia. The structures of the new glycosides were assigned by spectroscopic methods and by comparison with spectral data for sterol 1. Riiseins A and B showed in vitro cytotoxicity toward HCT-116 human colon adenocarcinoma with IC(50) values of 2.0 microg/mL.
- Published
- 2000
48. First report of bristleworm predator of the reef octocoral Carijoa riisei
- Author
-
H. A. Rodrigues, José Roberto Botelho de Souza, Carlos D. Pérez, and Bárbara de Moura Neves
- Subjects
Fishery ,geography ,geography.geographical_feature_category ,Carijoa riisei ,ved/biology ,ved/biology.organism_classification_rank.species ,Aquatic Science ,Biology ,Predator ,Reef - Published
- 2007
49. New report of nudibranch predators of the invasive octocoral Carijoa riisei in the Main Hawaiian Islands
- Author
-
D. Wagner, Samuel E. Kahng, and Robert J. Toonen
- Subjects
geography ,geography.geographical_feature_category ,biology ,ved/biology ,Ecology ,Fauna ,ved/biology.organism_classification_rank.species ,Nudibranch ,Coral reef ,Aquatic Science ,biology.organism_classification ,Predation ,Fishery ,Carijoa riisei ,Mollusca ,Predator - Published
- 2007
50. Resolving natural ranges and marine invasions in a globally distributed octocoral (genus Carijoa )
- Author
-
Concepcion, G. T., Kahng, S. E., Crepeau, M. W., Franklin, E. C., Coles, S. L., and Toonen, R. J.
- Published
- 2010
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