22 results on '"Carlos Alberto Niño-Torres"'
Search Results
2. Correction to: Elasmobranchs of the Mexican Caribbean: biodiversity and conservation status
- Author
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María del Pilar Blanco-Parra and Carlos Alberto Niño-Torres
- Subjects
Aquatic Science ,Ecology, Evolution, Behavior and Systematics - Published
- 2022
3. Elasmobranchs of the Mexican Caribbean: biodiversity and conservation status
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María del Pilar Blanco-Parra and Carlos Alberto Niño-Torres
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Aquatic Science ,Ecology, Evolution, Behavior and Systematics - Published
- 2022
4. Citizen Science as a Tool to Get Baseline Ecological and Biological Data on Sharks and Rays in a Data-Poor Region
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María-del-Pilar Blanco-Parra, Angelli Argaez Gasca, Camila Alejandra Reyes Rincón, Nicte Ha Gutiérrez Martínez, and Carlos Alberto Niño-Torres
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sharks ,rays ,monitoring ,coral reef ,scuba diving ,Renewable Energy, Sustainability and the Environment ,Geography, Planning and Development ,Management, Monitoring, Policy and Law - Abstract
The Mexican Caribbean is in one of the regions with the greatest diversity of elasmobranchs in the world. However, the population status of most of the shark and ray species in this region is unknown. We used a citizen science program based on divers to collect data about the diversity, abundance, and distribution of elasmobranchs in this region. We visited dive centers in six locations and performed structured interviews with divemasters, instructors, and owners of the diving centers. In total, 79 divers were interviewed, of which 69% had more than five years’ experience diving in the Mexican Caribbean. Divers could identify 24 elasmobranch species for this region. Most of the divers (82%) reported a decrease in sightings of sharks and rays. Rays were the most frequently sighted species by divers (89%), and the spotted eagle ray (A. narinari) was the most common elasmobranch species reported in the region. Citizen science was a useful approach gathering for baseline information about sharks and rays in the Mexican Caribbean, increasing our knowledge of the abundance and distribution of some species in this region. Citizen science affords the opportunity to obtain long-term data that can be useful for management and conservation.
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- 2022
- Full Text
- View/download PDF
5. Spatial patterns of shark-inflicted injuries on coastal bottlenose dolphins in the Mesoamerican Reef System
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Janneth Padilla-Saldivar, Jeremy J. Kiszka, Delma Nataly Castelblanco-Martínez, Eric A. Ramos, Carlos Alberto Niño-Torres, María del Pilar Blanco-Parra, and J. García
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0106 biological sciences ,Geography ,Ecology ,Megafauna ,Ecology (disciplines) ,010607 zoology ,Spatial ecology ,Animal Science and Zoology ,010603 evolutionary biology ,01 natural sciences ,Reef system ,Ecology, Evolution, Behavior and Systematics - Abstract
Understanding predator–prey relationships is critical in ecology, but relatively challenging when investigating elusive marine megafauna. In this study, we document the presence of shark-inflicted ...
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- 2021
6. Searching for manatees in the dark waters of a transboundary river between Mexico and Belize: a predictive distribution model
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Delma Nataly Castelblanco-Martínez, N. Ríos, S. Vilchez-Mendoza, M. F. Corona-Figueroa, Carlos Alberto Niño-Torres, and D. Delgado-Rodríguez
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0106 biological sciences ,High probability ,education.field_of_study ,biology ,010604 marine biology & hydrobiology ,Population ,Aquatic Science ,010603 evolutionary biology ,01 natural sciences ,Fishery ,Habitat ,biology.animal ,Manatee ,Environmental science ,Distribution model ,education ,Transect ,Relative species abundance ,Ecology, Evolution, Behavior and Systematics - Abstract
Antillean manatees in the Hondo River have been recorded from aerial and aquatic surveys, and interviews. However, these studies have been conducted only in the lower riverbed, leaving a gap of information about their presence and habitat characteristics in the rest of the river. We characterize and determine the ecohydrological variables influencing the presence and habitat use of manatees in the Hondo River. During 2017 and 2018, 30 based-boat field trips were conducted in five consecutive transects of 15 km each. A mixed methodology was used for manatee detection: side-scan sonar, direct sightings, and feces collection. Ecohydrological variables were measured in all transects and fixed points. The survey effort was 136.5 h. We recorded 123 manatees: 47% were observations during the boat-based surveys, 29% were at fixed points, and 24% were opportunistic. Additionally, 10 manatee feces were found. The first transect of the river showed the highest relative abundance for the two sampled seasons (windy = 0.27 manatees/km, dry = 0.55 manatees/km). According to the Poisson model, the estimated population was equal to 51 manatees. A random forest model suggested high probability of observing manatees in the first transects and decreasing at the upstream. The ecohydrological variables influencing the detection of manatees were conductivity, transparency, depth, and proximity to the Four Mile lagoon. The first two transects have ecohydrological characteristics that makes a benign environment for refuge, rest and feeding of manatees. We recommend carrying out conservation efforts in the first transects, such as protection and the regulation of boat transit.
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- 2020
7. Using small drones to photo-identify Antillean manatees: a novel method for monitoring an endangered marine mammal in the Caribbean Sea
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Sarah Sofía Landeo-Yauri, Carlos Alberto Niño-Torres, Linda Searle, Delma Nataly Castelblanco-Martínez, and Eric A. Ramos
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Ecology ,biology ,Endangered species ,lcsh:QK1-989 ,Fishery ,Marine mammal ,Geography ,lcsh:Botany ,biology.animal ,lcsh:Zoology ,Manatee ,lcsh:QL1-991 ,Trichechus manatus manatus ,Nature and Landscape Conservation - Abstract
Population assessments and species monitoring for many endangered marine megafauna are limited by the challenges of identifying and tracking individuals that live underwater in remote and sometimes inaccessible areas. Manatees can acquire scars from watercraft injury and other incidences that can be used to identify individuals. Here we describe a novel method for photo-identification of Antillean manatees Trichechus manatus manatus using aerial imagery captured during flights with a small multirotor drone. Between 2016 and 2017, we conducted 103 flights to detect and observe manatees in Belize, primarily at St. George’s Caye (SGC) near the Belize Barrier Reef. Review of aerial videos from these flights resulted in 279 sightings of manatees (245 adults, 34 calves). High-resolution images of individual manatees were extracted and classified according to image quality and distinctiveness of individual manatees for photo-identification. High-quality images of manatees classified as sufficiently distinctive were used to create a catalog of 17 identifiable individuals. At SGC, 21% of all sighted adult manatees (N = 214) were considered photo-identifiable over time. We suggest that the method can be used for investigating individual site fidelity, habitat use, and behavior of manatee populations. Our photo-identification protocol has the potential to improve long-term monitoring of Antillean manatees in Belize and can be applied throughout clear, shallow waters in the Caribbean and elsewhere.
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- 2020
8. Vibrissae growth rate of captive Antillean manatees ( Trichechus manatus manatus Linnaeus, 1758)
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Carlos Alberto Niño-Torres, Delma Nataly Castelblanco-Martínez, and Natalia Garcés-Cuartas
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Zoology ,Trichechus manatus manatus ,Aquatic Science ,Biology ,Ecology, Evolution, Behavior and Systematics - Published
- 2019
9. Mandibular osteomyelitis in the bottlenose dolphin Tursiops truncatus (Montagu, 1821) (Odontoceti: Cetacea): first case in the Mexican Caribbean
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Carlos Alberto Niño-Torres, Delma Nataly Castelblanco-Martínez, María del Pilar Blanco-Parra, and Roberto Sánchez Okrucky
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0403 veterinary science ,040301 veterinary sciences ,Mandibular osteomyelitis ,040102 fisheries ,0401 agriculture, forestry, and fisheries ,Cetacea ,Animal Science and Zoology ,04 agricultural and veterinary sciences ,Anatomy ,Biology ,Bottlenose dolphin ,biology.organism_classification ,Ecology, Evolution, Behavior and Systematics - Abstract
Oral pathological conditions are common in mammals and have been relatively well documented for some wild groups, but are rarely reported in marine mammals. Here, we report for the Mexican Caribbean the first case of mandibular osteomyelitis in a free-ranging dolphin. A bottlenose dolphin Tursiops truncatus adult male (256.5 cm total length) was found stranded dead in the west coast of the State Reserve “Chetumal Bay Manatee Sanctuary”. Herein, we discuss some plausible explanations about the origin of this lesion to improve the knowledge about the species biology.
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- 2019
10. Confirmed presence of the Neotropical otter, Lontra longicaudis, in Laguna Bacalar, Quintana Roo, Mexico
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Mildred Fabiola Corona-Figueroa, John Alexander Giraldo-Mueses, José Rogelio Cedeño-Vázquez, Delma Nataly Castelblanco-Martínez, Carlos Alberto Niño-Torres, Pablo M. Beutelspacher-García, Silvana Marisa Ibarra-Madrigal, and Jonathan Pérez-Flores
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Ecology, Evolution, Behavior and Systematics - Abstract
The Neotropical otter Lontra longicaudis is one of the least studied mammals of the Yucatán Peninsula and its presence in some water bodies of this region is questionable. Laguna Bacalar is the largest freshwater body located in the Yucatán Peninsula and faces several conservation problems due to its high potential for tourism development. We confirmed the presence of L. longicaudis in Laguna Bacalar by conducting interviews with residents, and the search for direct (sightings) and indirect (e.g., footprints) evidence of the species in 2013. We also include recent direct and indirect evidence (2019-2020). We classified the records into levels of certainty, according to the type of evidence (photographs, videos). We obtained 9 records of Neotropical otter through interviews (level 3), 3 sightings and 4 footprints (level 1), and 4 sightings (3 of these with level 2 and 1 with level 3 of certainty). It is necessary to increase the research effort to determine the conservation status and distribution of the Neotropical otter in the lagoon. We recommend making efforts in terms of socialization and education to facilitate the conservation of the Neotropical otters and their habitat in Laguna Bacalar.
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- 2022
11. Isotopic composition of aquatic and semiaquatic plants from the Mexican Caribbean: A baseline for regional ecological studies
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Carlos Alberto Niño-Torres, Delma Nataly Castelblanco-Martínez, Raúl Ortiz-Pulido, Jaime Cuevas, Antonio Delgado-Huertas, Neidy P. Cetz-Navarro, Natalia Garcés-Cuartas, Consejo Nacional de Ciencia y Tecnología (México), and PADI Foundation
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Biomass (ecology) ,Stable isotope analysis ,biology ,Primary producers ,Ecology ,Aquatic Science ,Oceanography ,biology.organism_classification ,Quintana roo ,Thalassia testudinum ,Aquatic plant ,Vegetation type ,Environmental science ,Ecosystem ,Mexico ,Aquatic vegetation ,Trophic level ,Isotope analysis - Abstract
Primary producers in the aquatic community structure are fundamental elements because they are the first link in the trophic network as occur in most ecosystems. They produce oxygen and biomass, act as a shelter for several species, and provide food for a wide variety of megaherbivore species like manatees and sea turtles. Physicochemical processes taken place in primary producers can be determined through stable isotope analysis (SIA) as natural tracers from elements like carbon and nitrogen, applied in ecological, and physiological studies. In the Mexican Caribbean ecosystems, SIA has been little applied in aquatic plants, where Thalassia testudinum is the main seagrass species studied. Here, we present the isotopic composition (δC and δN) from 95 aquatic and semiaquatic plant species of four vegetation types, from three different environments, hydroclimatic seasons, and geographical zones in the Mexican Caribbean. Main statistical differences in δC and δN were found according to vegetation type and environment. Besides, for δC were also found statistical differences among seasons, while for δN differences were found among zones (H-Test, p < 0.05). This study provides an isotopic baseline for further ecological studies in the region. This information can contribute to understanding the structure of aquatic food webs and infer the diet and feedings habits of aquatic species, as well as to detect possible changes related to anthropogenic activities that can affect the survival of these plant species, and the fauna depending on them., This research was part of N. Garcés-Cuartas Ph.D. thesis from the Sustainable Development Program from the University of Quintana Roo , Mexico, who benefited from CONACYT (Consejo Nacional de Ciencia y Tecnología) graduate fellowship. Logistics at the sampling surveys were partially funded by PADI Foundation (Program: Mammals, Turtles and Birds. App # 28521 ). Laboratory analysis was covered by PRODEP (Mexico), and the Stable Isotopes Biogeochemistry Laboratory from the Instituto Andaluz de Ciencias de la Tierra in Granada (Spain). We especially thank Arsenio Granados Torres for the stable isotope analysis of plant samples. We want to thank the advisors P. Blanco-Parra and P. Barradas-Miranda for their comments to previous versions of this work. Also, we thank Dr. Beth Brady for the document review, as well as two anonymous reviewers for the very helpful suggestions that improved this manuscript. The funders had no role in study design, data analysis, decision to publish or preparation of the manuscript. This research was part of the Monitoring Program of Aquatic Megafauna from the Mexican Caribbean (PROMMAC) (permit: SGPA/DGVS/006294/18 ).
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- 2021
12. A Review of the Aquatic Mammals of Belize
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Carlos Alberto Niño-Torres, Eric A. Ramos, Delma Nataly Castelblanco-Martínez, Klavdija Jenko, and Nicole Auil Gomez
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0106 biological sciences ,Geography ,Ecology ,010604 marine biology & hydrobiology ,Animal Science and Zoology ,Aquatic Science ,010603 evolutionary biology ,01 natural sciences ,Nature and Landscape Conservation - Published
- 2016
13. First record of fin whale Balaenoptera physalus in the Mexican Caribbean
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Carlos Alberto Niño-Torres, María del Pilar Blanco-Parra, María del Carmen García-Rivas, and Delma Nataly Castelblanco-Martínez
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Ecology ,Balaenoptera ,biology ,National park ,Whale ,Patrolling ,Biodiversity ,Aquatic Science ,Oceanography ,biology.organism_classification ,Fishery ,Geography ,biology.animal ,Aquatic mammal ,Ecology, Evolution, Behavior and Systematics ,Water Science and Technology - Abstract
Background. Until 2015, the aquatic mammals biodiversity in the Mexican Caribbean was unknown, but was in that year when 18 species were confirmed to be distribute in this region, none of them a Rorcual species. Goals. The aim of this work is to report the first sighting of a Balaenopteridae whale in the Mexican Caribbean. Methods. CONANP patrolling activities at the National Park Isla Contoy were conduced. Results On 2th August 2018, a stranded-live whale was found. The animal was identified as a ~18m (in length) fin whale Balaenoptera physalus (Linnaeus, 1758). Conclusions. This note is the first confirmed record of this species in the Mexican Caribbean increasing the list of confirmed aquatic mammal species distributed in this region.
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- 2019
14. Detecting, counting and following the giants of the sea: a review of monitoring methods for aquatic megavertebrates in the Caribbean
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Delma Nataly Castelblanco-Martínez, Carlos Alberto Niño-Torres, Pierre Charruau, B. Prezas, María del Pilar Blanco-Parra, and I. Zamora-Vilchis
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0106 biological sciences ,education.field_of_study ,Aerial survey ,Ecology ,Population ,Climate change ,Management, Monitoring, Policy and Law ,010603 evolutionary biology ,01 natural sciences ,010601 ecology ,Fishery ,Geography ,Caribbean region ,Megafauna ,Threatened species ,Citizen science ,education ,Environmental degradation ,Ecology, Evolution, Behavior and Systematics - Abstract
Abstract The Caribbean is a mega-diverse and bio-geographically important region that consists of the Caribbean Sea, its islands, and surrounding coastlines. Among the billions of aquatic species inhabiting this region, the mega-vertebrates stand out for their social, economic and ecologic relevance. However, the Caribbean has been threatened by climate change, poverty, pollution, environmental degradation and intense growth of the tourism industry, affecting megafauna species directly and indirectly. Population monitoring plays a critical role in an informed conservation process and helps guide management decisions at several scales. The aim of the present review was to critically examine the methods employed for monitoring marine megafauna in the Caribbean, so as to create a framework for future monitoring efforts. In total, 235 documents describing protocols for the monitoring of sirenians, cetaceans, elasmobranchs, sea turtles and crocodilians in the Caribbean region, were reviewed. The methods included community-based monitoring (interviews, citizen science and fisheries monitoring), aerial surveys (by manned and unmanned aerial vehicles), boat-based surveys (including manta tow, and side-scan sonars), land-based surveys, acoustic monitoring, underwater surveys, baited remote underwater video, mark–recapture, photo-identification and telemetry. Monitoring efforts invested on aquatic megafauna in the Caribbean have been highly different, with some species and/or groups being prioritised over others. The present critical review provides a country-based overview of the current and emerging methods for monitoring marine megafauna and a critical evaluation of their known advantages, disadvantages and biases.
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- 2019
15. Dietary preferences of Bryde's whales (Balaenoptera edeni) from the Gulf of California: Aδ13C,δ15N analysis
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Keith A. Hobson, Tabata Olavarrieta, Carlos Alberto Niño-Torres, R Jorge Urbán, and María del Pilar Blanco-Parra
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Fishery ,Balaenoptera edeni ,δ15N ,Aquatic Science ,Biology ,Ecology, Evolution, Behavior and Systematics - Published
- 2013
16. Feeding ecology and trophic level of the banded guitarfish, Zapteryx exasperata, inferred from stable isotopes and stomach contents analysis
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Carlos Alberto Niño-Torres, Felipe Galván-Magaña, María-del-Pilar Blanco-Parra, and J. Fernando Márquez-Farías
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Banded guitarfish ,Engraulis ,biology ,Ecology ,Pelagic zone ,Aquatic Science ,Zapteryx ,biology.organism_classification ,Ecology, Evolution, Behavior and Systematics ,Demersal zone ,Apex predator ,Isotope analysis ,Trophic level - Abstract
The feeding ecology and trophic level of the banded guitarfish, Zapteryx exasperata, from the Gulf of California, were assessed using stable isotope analysis (SIA) of carbon and nitrogen in muscle samples, and stomach contents analysis (SCA). Males and females showed similar diet preferences with a high diet overlap (Cλ = 0.99) and similar values of δ13C and δ15N (ANOVA, F = 0.0 p = 0.94 for δ13C; F = 0.1 p = 0.78 for δ15N). The main prey groups found were demersal fishes dominated by the daisy midshipman, Porichthys margaritatus, (>90%IRI), however, pelagic fishes were also found (Engraulis mordax 2%IRI). An ontogenetic diet shift was found, indicated by the importance of crustaceans in the juvenile diet and the significant isotopic differences between juveniles and adults (δ13C, ANOVA, F = 13.3 p = 0.0004 and δ15N, ANOVA, F = 4.7 p = 0.03). An overall trend of increase in δ15N values with increasing body length (F = 8.15 p = 0.005) was observed. The mean trophic level estimated in this work by the two methods was ~4.1, indicating that this species is a top predator in the Gulf of California. Zapteryx exasperata is a specialist feeder (Bi = 0.11, H’ = 2.32), consuming mainly benthic fishes in coastal areas of the Gulf of California. The importance of this species in the benthic ecosystem equilibrium as a top predator is an important point to keep in mind when developing future management plans of the batoid fishery in the Gulf of California.
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- 2011
17. Organochlorine pesticides and polychlorinated biphenyls in fin whales (Balaenoptera physalus) from the Gulf of California
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Susan C. Gardner, Jorge Urbán R., Carlos Alberto Niño-Torres, and Tania Zenteno-Savín
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Male ,Range (biology) ,Health, Toxicology and Mutagenesis ,Population ,Zoology ,Cetacea ,Management, Monitoring, Policy and Law ,Toxicology ,California ,Blubber ,Hydrocarbons, Chlorinated ,Animals ,Ecotoxicology ,Pesticides ,education ,Mexico ,education.field_of_study ,Fin Whale ,biology ,Balaenoptera ,Ecology ,Aquatic animal ,General Medicine ,Pesticide ,biology.organism_classification ,Polychlorinated Biphenyls ,Adipose Tissue ,Female ,Water Pollutants, Chemical ,Environmental Monitoring - Abstract
The present study reports unique data on concentrations of several classes of organochlorine pesticides and polychlorinated biphenyls in blubber biopsies from healthy living fin whales (Balaenoptera physalus) from the Gulf of California, Mexico, one of the most isolated and unstudied population in the world. OC levels in this population were generally lower than levels reported in fin whales from other regions. The rank order of OCs were ∑DDTs (range from 300 to 2400 ng g−1 lw) > ∑PCBs (range from 40 to 290 ng g−1 lw) > ∑HCHs (range from
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- 2009
18. Organochlorine Pesticides and Polychlorinated Biphenyls in California Sea Lions (Zalophus californianus californianus) from the Gulf of California, México
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Tania Zenteno-Savín, Carlos Alberto Niño-Torres, Susan C. Gardner, and Gina M. Ylitalo
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Male ,Zalophus californianus ,Health, Toxicology and Mutagenesis ,Zoology ,Toxicology ,Blubber ,Hydrocarbons, Chlorinated ,Animals ,Pesticides ,Sea lion ,Mexico ,Rookery ,Pacific Ocean ,biology ,Organochlorine pesticide ,Aquatic animal ,General Medicine ,Pesticide ,biology.organism_classification ,Polychlorinated Biphenyls ,Pollution ,Sea Lions ,Fishery ,Adipose Tissue ,Aquatic environment ,Female ,Water Pollutants, Chemical ,Environmental Monitoring - Abstract
We report concentrations of several classes of organochlorines (OCs) in the blubber of California sea lions (Zalophus californianus) from the Gulf of California. Summed OC levels measured in 34 wild-ranging animals were, in general, lower than those previously reported in sea lions from the eastern Pacific. The rank order of OCs was SigmaDDTs (mean=3400 ng g(-1 ) lipid weight [lw])SigmaPCBs (1400 ng g(-1 ) lw)SigmaHCHs (50 ng g(-1 ) lw)or= SigmaCHLORs (46 ng g(-1 ) lw). The most abundant OC measured was the DDT metabolite, p,p'-DDE. No significant differences in OC profiles were found between genders or rookeries. Although the mean concentrations of OCs measured in adult males and females were similar, only adult females had significantly higher (p0.05) mean blubber concentrations of summation SigmaDDTs and summation SigmaHCHs than pups.
- Published
- 2008
19. ISOTOPIC ANALYSIS OF ?13C, ?15N, AND ?34S 'A FEEDING TALE' IN TEETH OF THE LONGBEAKED COMMON DOLPHIN, DELPHINUS CAPENSIS
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Carlos Alberto Niño-Torres, Felipe Galván-Magaña, Juan Pablo Gallo-Reynoso, Elva Escobar-Briones, and Stephen A. Macko
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δ13C ,Common dolphin ,Ecology ,Cetacea ,Delphinus delphis ,Aquatic Science ,Biology ,biology.organism_classification ,biology.animal ,Juvenile ,Delphinus capensis ,Ecology, Evolution, Behavior and Systematics ,Trophic level ,Isotope analysis - Abstract
Stable isotopic analyses of carbon, nitrogen, and sulfur were performed on teeth of different ages and sexes of the longbeaked common dolphin, Delphinus capensis, from the Gulf of California. Similarities in diet are suggested between the sexes, with no significant differences in isotopic compositions being observed. Differences in the δ 13 C, δ 15 N, and δ 34 S signatures were found among the age groups (nursing calf, juvenile, subadult, and adult). These data suggest that this species is generally a coastal feeder, and that it changes its feeding habits with increasing age, drawing more nutrition from higher trophic level organisms later in life.
- Published
- 2006
20. The Herpetofauna of the Insular Systems of Mexico
- Author
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Víctor Hugo González-Sánchez, Jerry D. Johnson, Oscar Frausto-Martínez, Luis M. Mejía Ortíz, Alberto Pereira-Corona, María del Pilar Blanco-Parra, Pierre Charruau, and Carlos Alberto Níño-Torres
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islands ,cays ,archipelagos ,endemism ,EVS ,Sea of Cortes ,Biology (General) ,QH301-705.5 - Abstract
The herpetofauna of the insular systems of Mexico is composed of 226 species, of which 14 are anurans, two are salamanders, and 210 are reptiles, comprised of two crocodilians, 195 squamates, and 13 turtles. Although the surface of the Mexican islands is only 0.26% of the Mexican territorial extension, these 226 species constitute 16.1% of Mexico’s documented herpetofauna of 1405 species. We classified the Mexican islands into five physiographic regions: the islands of Pacific Baja California; the islands of the Gulf of California; the islands of the Tropical Pacific; the islands of the Gulf of Mexico; and the islands of the Mexican Caribbean. The highest species richness among these regions is in the Gulf of California, with 108 species, and the lowest richness is 40 for the islands of the Pacific Baja California and 46 for those of the Gulf of Mexico. We identified introduced species, risk of wildfires, climate change, and urban/tourist development as the main environmental threats impinging on these species. In addition, we assessed the conservation status of the native species by comparing the SEMARNAT (NOM-059), IUCN Red List, and the Environmental Vulnerability Score (EVS) systems. The comparison of these systems showed that the NOM-059 and the IUCN systems seriously underestimate the degree of threat for insular endemics, being particularly concerning for those insular species that are known only from their respective type localities. The EVS system proved to be practical and indicated that 94 species have a high vulnerability status, 62 a medium status, and 56 a low status. The Relative Herpetofaunal Priority system, which contrasts the number of endemic and threatened species among different physiographic areas, indicates that the regions with the highest priority are the Islands of the Gulf of California, followed by the islands of the Tropical Pacific. Finally, we discussed the completeness of the Mexican Natural Protected Areas on the insular systems of the country; the result is outstanding since Mexico is already close to achieving the goal of having all their islands under some degree of federal protection.
- Published
- 2023
- Full Text
- View/download PDF
21. A multi-trial diagnostic tool in fin whale (Balaenoptera physalus) skin biopsies of the Pelagos Sanctuary (Mediterranean Sea) and the Gulf of California (Mexico)
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Jorge Urbán, Simone Panigada, S. Porcelloni, Juan Muñoz-Arnanz, Lorenzo Rojas-Bracho, Silvia Casini, Begoña Jiménez, Giacomo Spinsanti, Cristina Panti, Silvia Maltese, Maria Cristina Fossi, Letizia Marsili, Carlos Alberto Niño-Torres, and Giancarlo Lauriano
- Subjects
Mediterranean climate ,Male ,Biopsy ,CYP2B ,AHR ,E2F-1 ,Blotting, Western ,CYP1A1 ,Cetacea ,PBDE ,Aquatic Science ,Oceanography ,Pacific ocean ,OCs ,PAHs ,Mediterranean sea ,biology.animal ,Gulf of California ,Mediterranean Sea ,Animals ,skin biopsy ,Mexico ,HSP70 ,Skin ,biology ,Balaenoptera ,Fin Whale ,Whale ,Gene Expression Profiling ,Balaenoptera physalus ,ER ,General Medicine ,biology.organism_classification ,Pollution ,Molecular biomarkers ,Fin Whales ,Fishery ,Female ,Biomarkers ,Water Pollutants, Chemical ,Environmental Monitoring - Abstract
The main objective of this study was to apply a set of sensitive non-lethal biomarkers in skin biopsies of fin whales (Balaenoptera physalus) to evaluate the toxicological status of this mysticete in the Pelagos Sanctuary (Mediterranean Sea) and in the Gulf of California (Sea of Cortez-Mexico). We developed a "multi-trial diagnostic tool" (based on field and in vitro studies), combining molecular biomarkers (western blot of CYP1A1, CYP2B) and gene expression (qRT-PCR of HSP70, ERα, AHR, E2F-1) with the analysis of OCs, PAHs and PBDEs. The study revealed a higher level of toxicological stress in the Mediterranean fin whales.
- Published
- 2009
22. First record of fin whale Balaenoptera physalusin the Mexican Caribbean
- Author
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Del Carmen García-Rivas, M., Del Pilar Blanco-Parra, M., Castelblanco-Martínez, D. N., and Carlos Alberto Niño-Torres
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