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3. The methane-oxidizing microbial communities of three maar lakes in tropical monsoon Asia.

Author

Bicaldo, Iona Eunice C., Padilla, Karol Sophia Agape R., Tzu-Hsuan Tu, Wan Ting Chen, Mendoza-Pascual, Milette U., Vicera, Carmela Vannette B., de Leon, Justine R., Poblete, Kamille N., Austria, Eleanor S., Lopez, Mark Louie D., Yuki Kobayashi, Fuh-Kwo Shiah, Papa, Rey Donne S., Noboru Okuda, Pei-Ling Wang, and Li-Hung Lin

Subjects
FLUORESCENCE in situ hybridization, MICROBIAL communities, MONSOONS, METHANOTROPHS, TROPICAL ecosystems, MICROBIAL diversity
Abstract

Methane-oxidizing bacteria (MOB) is a group of planktonic microorganisms that use methane as their primary source of cellular energy. For tropical lakes in monsoon Asia, there is currently a knowledge gap on MOB community diversity and the factors influencing their abundance. Herewith, we present a preliminary assessment of the MOB communities in three maar lakes in tropical monsoon Asia using Catalyzed Reporter Deposition, Fluorescence In-Situ Hybridization (CARD-FISH), 16S rRNA amplicon sequencing, and pmoA gene sequencing. Correlation analysis between MOB abundances and lakes' physicochemical parameters following seasonal monsoon events were performed to explain observed spatial and temporal patterns in MOB diversity. The CARD-FISH analyses detected the three MOB types (I, II, and NC10) which aligned with the results from 16S rRNA amplicons and pmoA gene sequencing. Among community members based on 16S rRNA genes, Proteobacterial Type I MOB (e.g., Methylococcaceae and Methylomonadaceae), Proteobacterial Type II (Methylocystaceae), Verrucomicrobial (Methylacidiphilaceae), Methylomirabilota/NC10 (Methylomirabilaceae), and archaeal ANME-1a were found to be the dominant methane-oxidizers in three maar lakes. Analysis of microbial diversity and distribution revealed that the community compositions in Lake Yambo vary with the seasons and are more distinct during the stratified period. Temperature, DO, and pH were significantly and inversely linked with type I MOB and Methylomirabilota during stratification. Only MOB type I was influenced by monsoon changes. This research sought to establish a baseline for the diversity and ecology of planktonic MOB in tropical monsoon Asia to better comprehend their contribution to the CH4 cycle in tropical freshwater ecosystems. [ABSTRACT FROM AUTHOR]

Published
2024
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6. Review of the Biodiversity and Limno-ecological Studies on Lake Taal: Updates from the Last 10 years.

Author

de Leon, Justine R., Leyesa, Leona Liza, Pilar, Marie Angelica, To, Dale Anthony, Briones, Jonathan Carlo A., and Papa, Rey Donne S.

Subjects
TROPICAL ecosystems, LAKES, RESEARCH grants, LAKE management, HABITAT conservation, BIODIVERSITY
Abstract

Lake Taal is one of the most significant lake ecosystems in tropical East Asia. In 2011, a review paper consolidated all known biodiversity and limno-ecological studies conducted in Lake Taal from the beginning of the 20th century all the way to the late 2000s. It highlighted that insufficient funding, inadequate long-term monitoring data, and the publication culture of that time impeded having a comprehensive understanding of the lake. Since then, much research work has been done in Lake Taal, especially during the past decade. This review paper provides an analysis and summary of the research work conducted in Lake Taal over the past 10 years. The recent decade has seen a steady increase in scientific interest in Lake Taal made evident by more scientists and institutions working on topics involving the lake. Research grants, collaborations, and publications have also significantly increased during the past 10 years. This has led to an improved understanding of the lake's biodiversity, ecology, and impacts of intensive aquaculture and the introduction of non-native species. Taken together, this paper presents a better understanding of Lake Taal, which can be utilized for the design and improvement of conservation, preservation, and management programs for this multi-use freshwater system. [ABSTRACT FROM AUTHOR]

Published
2023
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7. Gomphonema Species (Bacillariophyceae) from Marikina River, Rizal (Luzon), Philippines.

Author

Martinez-Goss, Milagrosa R., Taisuke Ohtsuka, Harue Inoue, Arguelles, Eldrin D. L. R., Tohru Ikeya, Peralta, Elfritzson M., Papa, Rey Donne S., and Noboru Okuda

Subjects
PSEUDO-nitzschia, SCANNING electron microscopes, NUMBERS of species, DIATOMS, SPECIES, MICROSCOPES
Abstract

A floristic study of the diatoms (Bacillariophyceae) along the Marikina River in the eastern part of Metro Manila, Philippines, recorded at least 140 species belonging to 39 genera. Of these genera, one of the greatest number of species was observed in the genus Gomphonema (18 species). These species were identified and described under the bright field light microscope. Some species were further observed under the scanning electron microscope. A habitat description of the occurrence of the Gomphonema species is given. Twelve (12) out of the 18 species are new records for the country: G. brasiliense subsp. pacificum Moser, Lange-Bertalot & Metzeltin, G. chinense Liu & Kociolek, G. contraturris Lange-Bertalot & E.Reichardt, G. cuneolus E.Reichardt, G. exilissimum (Grunow) Lange-Bertalot & E.Reichardt, G. insigniforme E.Reichardt & Lange-Bertalot, G. javanicum Hustedt, G. kobayasii Kociolek & J.C.Kingston, G. pseudosphaerophorum H. Kobayasi, G. sundaense E.Reichardt, G. cf. qingyiensis L-X Zhang, P. Yu & Q-M You, and G. vibrio var. bohemicum (Reichelt & Fricke) R. Ross. Hence, this paper reports a total of 44 species of Gomphonema from the Philippines, including previous studies from 1937 to date. [ABSTRACT FROM AUTHOR]

Published
2023
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11. First Record of Culturable Microbial Communities Associated with the Freshwater Sponge Spongilla alba in Lake Taal, Philippines.

Author

Manzano, Joe Anthony H., Magdalaga, Marlan T., Nicolas, Ellha Mae Nicole M., Medalla, Milen Angelie R., Urrutia, Miguel Gabriel Z., Llames, Lloyd Christian J., Macabeo, Allan Patrick G., and Papa, Rey Donne S.

Subjects
MICROBIAL communities, FRESH water, STRIPE rust, STENOTROPHOMONAS maltophilia, PUCCINIA striiformis, PHOMOPSIS
Abstract

Sponge-microbe symbiosis is considered among the most primitive ecological relationships between metazoans and microorganisms. There is strong interest in understanding the occurrence of microbial communities in sponges due to their integral roles in host ecology, nutrient cycling, and production of potential bioactive secondary metabolites. However, most studies on sponges have been centered on marine species. In this study, the freshwater sponge Spongilla alba and its associated microorganisms were explored for the first time. Sponge samples collected from Lake Taal were taxonomically identified using gross morphology and spicules analysis. Both bacterial and fungal isolates were culturally characterized and molecularly identified using 16S rRNA gene for bacteria and ITS for fungi. Five bacterial species were identified as Pseudomonas sp., Enterococcus sp., Stenotrophomonas sp., Stenotrophomonas maltophilia, and Pseudomonas mosselii plus eight fungal species with spore sizes from 5-10 μm were identified as Colletotrichum truncatum, Trichosporon asahii, Rhizopus microsporus, Puccinia striiformis f. sp. tritici strain, Talaromyces columbinus, Phoma sp., Phomopsis sp., and Lichtheimia ramosa. Phylogenetic analysis revealed microbial sequences belonging to Proteobacteria (n = 4), Firmicutes (n = 1), Ascomycota (n = 4), Zygomycota (n = 2), and Basidiomycota (n = 2). The study reports infrequent occurrences of Enterococcus, Stenotrophomonas, Puccinia, and Lichtheimia species as freshwater sponge-associated microbes. This also presents the culturable microbial composition of freshwater sponges and rare occurrence of marine- and terrestrial-associated fungi T. asahii, R. microsporus, Phoma sp., Phomopsis sp., C. truncatum, and T. columbinus in a unique freshwater ecosystem such as Lake Taal. [ABSTRACT FROM AUTHOR]

Published
2023
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12. Geography, ecology, and history synergistically shape across-range genetic variation in a calanoid copepod endemic to the north-eastern Oriental.

Author

Zhang, Xiaoli, Huang, Qi, Liu, Ping, Sun, Chenghe, Papa, Rey Donne S, Sanoamuang, Laorsri, Dumont, Henri J, and Han, Bo-Ping

Subjects
GENETIC variation, PHYLOGEOGRAPHY, LAST Glacial Maximum, POPULATION differentiation, CLIMATE change, GEOGRAPHY
Abstract

The center-periphery hypothesis (CPH) predicts that peripheral populations will have lower genetic variation than those at the center of a species' distribution. However, ecological margins do not always coincide with geographical edges when topographies are diverse. Historical climate changes can also strongly affect genetic variation. Here, we examined genetic variation in Phyllodiaptomus tunguidus , a calanoid copepod endemic to the north-eastern Oriental. This species was predicted to exhibit a complex pattern of genetic variation across its range due to the diverse topographies and stable climate history of the north-eastern Oriental. To test this, we used geographic distance to the center of the distribution, current ecological suitability, and climate during the last glacial maximum as geographical, ecological, and historical factors, respectively, in our analyses. We measured genetic diversity and population differentiation using mitochondrial and nuclear markers. This showed that P. tunguidus had 3 refugia during the last glacial maximum (LGM). Such a pattern of multiple refugia complicates the determination of the center and periphery of spatial genetic diversity. Both regression models and redundancy analyses failed to support the CPH. Instead, they showed that geographical, ecological, and historical factors together shaped population genetic structure in this species. Ecological factors explained significantly more genetic variation than did geographical and historical factors—however, all three factors interacted significantly to affect the pattern of genetic variation. The results extend our understanding of the CPH and the extent to which it can explain genetic variation across populations. [ABSTRACT FROM AUTHOR]

Published
2023
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15. Philippine Seven Tropical Maar Lakes are Ideal Habitats for the Invasive Arctodiaptomus dorsalis Marsh, 1907 (Copepoda: Calanoida).

Author

de Leon, Justine R., Tordesillas, Dino T., Biag, Irian J. L., Cusi, Sean H. L., Tan, John A. B., Mijares, Edna Marie, Aguilar, Jaydan I., and Papa, Rey Donne S.

Subjects
ORIENTAL fruit fly, COPEPODA, WATER quality, LAKE management, CALANOIDA, LAKES, MARSHES
Abstract

The presence of the invasive calanoid copepod Arctodiaptomus dorsalis in Philippine inland waters has been reported in numerous studies. Attempts to understand how it effectively proliferated in the country's freshwaters have shown its preference towards shallow and productive waters - a feature shared by most lakes in the Philippines. In this study, we compared the body size and reproductive capacity - proxied by clutch size (CS) - of ovigerous female A. dorsalis obtained from established populations in the seven maar lakes (SML) of San Pablo, Laguna, Philippines. These measurements were also correlated with selected water quality parameters. Collection of ovigerous A. dorsalis and water quality parameters were conducted on a 3-mo sampling period during the southwest monsoon season in 2016. Statistical analysis shows that there exists a significant difference between the prosome length (PL) and CS of A. dorsalis from the seven lakes (p < 0.001), with the shallowest and most productive lake containing the most fecund population. Additionally, all water quality parameters showed a positive correlation with the PL and CS of ovigerous A. dorsalis from the SML (p < 0.01). This shows that the SML provides favorable conditions for the propagation of A. dorsalis, making it a model for in situ investigation of this invasive species' ecology; the first step in incorporating zooplankton ecology as a tool for the development of lake management systems. [ABSTRACT FROM AUTHOR]

Published
2022

16. Limnology of Lake Wood: An Ancestral Lake of the Subanen Tribe.

Author

Baludo, Marjohn Y., Papa, Rey Donne S., and Magbanua, Francis S.

Subjects
*TROPHIC state index, *LIMNOLOGY, *EUTROPHICATION control, *LAKES, *WATER depth, *SEA level
Abstract

Relatively limited information exists on Lake Wood's limnology and ecology, an ancestral lake of the Subanens. Here, we provide a limnological characterization of the lake -- exploring its physical, chemical, and biological features. The data on lake morphometry were gathered using an echosounder; lower depth water samples were collected using a Niskin water sampler for physicochemical analyses while surface water samples were collected at five sampling sites for phosphate (PO4) analysis; and zooplankton samples were collected at several depths through vertical towing in March-April 2019. Lake Wood, located at 320 m above sea level, has an extensive surface area covering 7.38 km² with a maximum depth of 85 m. Lake water comes from rainfall, small rivers, and groundwater and empties into the Dumanquilas Bay via its only outlet -- the Biswangan River. Land use of the lake is predominantly cultivated land. Moreover, based on the trophic state index (TSI), the lake's current trophic status is eutrophic. During the study periods, thermocline and oxycline formed at 15 m below the surface of the lake. We recorded three cladocerans (Ceriodaphnia cornuta, Diaphanosoma cf. sarsi, and Moina micrura) and one copepod species (Thermocyclops crassus) in the lake, all of which are common limnetic species found in the Philippines. Based on our findings, we recommend more efforts to manage and rehabilitate the lake to control and manage eutrophication's negative impacts. Finally, our study contributes to understanding lakes in Mindanao that are less represented in Philippine freshwater research. [ABSTRACT FROM AUTHOR]

Published
2021
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17. Arctodiaptomus dorsalis

Author

Dela Paz, Erica Silk P., Lopez, Mark Louie D., David, Christian Irvin Harvey A., Dela Cruz, Dave Ryan A., Viernes, Gian Alfonso A., Wong, Jac Fritgerald, and Papa, Rey Donne S.

Subjects
Diaptomidae, Arthropoda, Arctodiaptomus dorsalis, Hexanauplia, Arctodiaptomus, Animalia, Biodiversity, Calanoida, Taxonomy
Abstract

Arctodiaptomus dorsalis (Marsh, 1907) Materials examined. Philippines: Luzon: Manila: Pasig River (14.5604° N, 121.0659° E), coll. DRA Dela Cruz, GAA Viernes, JF Wong, ESP Dela Paz and ML Lopez, June 2016 (UST-ZRC 0253A–B, USTZRC 0254, USTZRC 0255A–B, and USTZRC 0256A–B, 4 spec.). Short description. The body is generally elongated with a long antennule that generally reaches the tip of the urosome. Male specimen: antennule is geniculated. Right exopodite 2 of P5 leg is relatively large and bears a long, thin, and strongly curved terminal claw on the posteromedian area; and with a short lateral spine protruding near the middle of exopodite 2. Female specimen: antennule is straight. The pair of P5 is symmetrical. All the morphological characteristics concur with the descriptions and illustrations of Dussart and Defaye (2001) and Papa et al. (2012). Ecological distribution. Arctodiaptomus dorsalis is found in lakes and rivers. This species is an invasive copepod hence that can tolerate eutrophic condition (Papa et al. 2012)., Published as part of Dela Paz, Erica Silk P., Lopez, Mark Louie D., David, Christian Irvin Harvey A., Dela Cruz, Dave Ryan A., Viernes, Gian Alfonso A., Wong, Jac Fritgerald & Papa, Rey Donne S., 2018, Freshwater microcrustaceans (Cladocera: Anomopoda and Ctenopoda, Copepoda: Cyclopoida and Calanoida) in the highly urbanized Metropolitan Manila area (Luzon, Philippines), pp. 751-762 in Check List 14 (5) on page 757, DOI: 10.15560/14.5.751, {"references":["Dussart BH, Defaye D (2001) Introduction to the Copepoda. 2 nd edition. Guide to the Identification of the Microinvertebrates of the Continental Waters of the World, No. 16. Backhuys Publishers, Leiden. 344 pp.","Papa RDS, Li H, Tordesillas DT, Han B, Dumont HJ (2012) Massive Invasion of Arctodiaptomus dorsalis (Copepoda, Calanoida, Diaptomidae) in Philippine lakes; a threat to Asian zooplankton biodiversity? Biological Invasions 14 (12): 2471 - 2478. http: // doi. org / 10.1007 / s 10530 - 012 - 0250 - 9"]}

Published
2018
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18. Thermocyclops decipiens

Author

Dela Paz, Erica Silk P., Lopez, Mark Louie D., David, Christian Irvin Harvey A., Dela Cruz, Dave Ryan A., Viernes, Gian Alfonso A., Wong, Jac Fritgerald, and Papa, Rey Donne S.

Subjects
Thermocyclops, Arthropoda, Hexanauplia, Animalia, Biodiversity, Cyclopoida, Thermocyclops decipiens, Taxonomy, Cyclopidae
Abstract

Thermocyclops decipiens (Kiefer, 1929) Materials examined. Philippines: Luzon: Manila: UST Botanical Garden pond (14.6101° N, 120.9885° E), coll. DRA Dela Cruz, GAA Viernes, JF Wong, ESP Dela Paz and ML Lopez, June 2016 (UST-ZRC 0188–0189, 2 spec.). La Mesa Ecopark Pond (14.7113° N, 121.0756° E), coll. DRA Dela Cruz, GAA Viernes, JF Wong, ESP Dela Paz and ML Lopez, June 2016 (UST-ZRC 0182A– B, 0183–0184, 3 spec.). La Mesa Ecopark Lagoon (14.7121° N, 121.0756° E), coll. DRA Dela Cruz, GAA Viernes, JF Wong, ESP Dela Paz and ML Lopez, June 2016 (UST-ZRC 0185–0186, 2 spec.). Creek in Muñoz (14.6574° N, 121.0157° E), coll. DRA Dela Cruz, GAA Viernes, JF Wong, ESP Dela Paz and ML Lopez, June 2016 (UST-ZRC 0187A–B, 1 spec.). Veterans Memorial Medical Center lagoon (14.6571° N, 121.0380° E), coll. DRA Dela Cruz, GAA Viernes, JF Wong, ESP Dela Paz and ML Lopez, June 2016 (UST-ZRC 0190, 1 spec.). Short description. The body is generally large at the prosome and narrows to the urosome. The arms of the seminal receptacle are wide and straight. The caudal rami are smooth and naked. The marginal extension at the P4 basipodite bears few spinules. The distal margin at P4 intercoxal sclerite is high and triangular in shape. The apical medial spine of P4 endopodite is 2–2.7 times longer than the lateral spine. All the morphological characters concur with the description of Mirabdullayev (2003) and Dela Paz et al. (2016a). Ecological distribution. Thermocyclops decipiens is found in large variety of freshwater habitats including lakes, rivers, ponds, reservoirs, swamps, and falls. This species inhabits the freshwater, also survive in relatively saline or eutrophic condition., Published as part of Dela Paz, Erica Silk P., Lopez, Mark Louie D., David, Christian Irvin Harvey A., Dela Cruz, Dave Ryan A., Viernes, Gian Alfonso A., Wong, Jac Fritgerald & Papa, Rey Donne S., 2018, Freshwater microcrustaceans (Cladocera: Anomopoda and Ctenopoda, Copepoda: Cyclopoida and Calanoida) in the highly urbanized Metropolitan Manila area (Luzon, Philippines), pp. 751-762 in Check List 14 (5) on pages 756-757, DOI: 10.15560/14.5.751, {"references":["Dela Paz ESP, Holynska MK, Papa RDS (2016 a) Mesocyclops and Thermocyclops (Copepoda, Cyclopidae) in the major Visayas Islands (Central Philippines). Crustaceana 89: 787 - 809. https: // doi. org / 10.1163 / 15685403 - 00003547"]}

Published
2018
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19. Bosmina fatalis

Author

Dela Paz, Erica Silk P., Lopez, Mark Louie D., David, Christian Irvin Harvey A., Dela Cruz, Dave Ryan A., Viernes, Gian Alfonso A., Wong, Jac Fritgerald, and Papa, Rey Donne S.

Subjects
Branchiopoda, Arthropoda, Bosmina, Bosminidae, Bosmina fatalis, Animalia, Biodiversity, Diplostraca, Taxonomy
Abstract

Bosmina fatalis (Baird, 1864) Materials examined. Philippines: Luzon: Manila: Kalayaan Creek (14.6900° N, 120.9366° E), coll. DRA Dela Cruz, GAA Viernes, JF Wong, ESP Dela Paz and ML Lopez, June 2016 (UST-ZRC 0097–0098, 2 spec.). Estero de la Reina (14.6011° N, 120.9763° E), coll. DRA Dela Cruz, GAA Viernes, JF Wong, ESP Dela Paz and ML Lopez, June 2016 (UST-ZRC 0099A–0099F, 4 spec.). Marikina River (14.6342° N, 121.0936° E), coll. DRA Dela Cruz, GAA Viernes, JF Wong, ESP Dela Paz and ML Lopez, June 2016 (UST-ZRC 0100A–B, 2 spec.). Short description. The head is large and rectangular in shape, with no clear demarcation between the head and body along the dorsal surface. Head shield is present. The eye is small near the rostrum. The long rostrum is fused with the immobile antennules, with a slight concavity between the 2 parts. The antennules have a characteristic pointed projection along the midline. The postabdominal claw is almost straight with 6 spines and the distal part finely ciliated. Morphological characteristics concur with the descriptions and illustrations of Fernando (1992) and Pascual et al. (2014). Ecological distribution. Bosmina fatalis is widely distributed in lakes, rivers, creeks, and reservoirs. This species is a primary grazer in the freshwater habitats and has a good defensive mechanism (akinesis) against its predator which allows them to live in the pelagic zone despite of its small body size (Rizo et al. 2017)., Published as part of Dela Paz, Erica Silk P., Lopez, Mark Louie D., David, Christian Irvin Harvey A., Dela Cruz, Dave Ryan A., Viernes, Gian Alfonso A., Wong, Jac Fritgerald & Papa, Rey Donne S., 2018, Freshwater microcrustaceans (Cladocera: Anomopoda and Ctenopoda, Copepoda: Cyclopoida and Calanoida) in the highly urbanized Metropolitan Manila area (Luzon, Philippines), pp. 751-762 in Check List 14 (5) on page 753, DOI: 10.15560/14.5.751, {"references":["Pascual JAF, Rizo EZC, Han B, Dumont HJ, Papa RDS (2014) Taxonomy and distribution of four Cladoceran families (Branchiopoda: Cladocera: Moinidae, Bosminidae, Chydoridae and Sididae) in Philippine inland waters. Raffles Bulletin of Zoology 62: 771 - 794.","Rizo EZC, Gu Y, Papa RDS, Dumont HJ, Han B (2017) Identifying functional groups and ecological roles of tropical ad subtropical freshwater Cladocera in Asia. Hydrobiologia 799 (1): 83 - 99. https // doi. org / 10.1007 / s 10750 - 017 - 3199 - y"]}

Published
2018
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20. Ilyocryptidae Smirnov 1992

Author

Lopez, Mark Louie D., Pascual, Jhaydee Ann F., Dela Paz, Erica Silk P., Rizo, Eric Zeus C., Tordesillas, Dino T., Guinto, Shea Kathleen, Han, Boping, Dumont, Henri J., Mamaril, Augustus C., and Papa, Rey Donne S.

Subjects
Branchiopoda, Arthropoda, Ilyocryptidae, Animalia, Biodiversity, Diplostraca, Taxonomy
Abstract

Family Ilyocryptidae Smirnov, 1992 Ilyocryptus spinifer Herrick, 1882 Synonyms in Philippine literature: Ilycryptus longiremis Sars, 1888 and Ilyocryptus verrucosus Daday, 1905. Philippine records: Mamaril, 1986, 2001. General geographic distribution: This is a common species distributed from North and South America, South Asia and Australia. Distribution in the Philippines. Luzon: Batangas –Nasugbu; Bulacan –Bustos Dam and Malolos; Cagayan –Buguey; National Capital Region–La Mesa Dam, Marikina, and UP Diliman Campus; Manila-Laguna-Rizal: Laguna de Bay; Nueva Ecija –Pantabangan Dam. Negros: Negros Occidental – Bacolod; Negros Oriental –Sibulan. Mindanao: Agusan del Norte –Lake Mainit; Lanao del Sur –Lake Lanao. Remarks. It is the dominant species of Family Ilyocryptidae in most freshwater bodies of the tropics and subtropics (Jeong et al., 2012; Kotov & Sanoamuang, 2005). It is usually associated with large tropical lakes with a good coverage of vegetation (Kotov & Stifter, 2006). Philippine population needs to be compared with others to determine morphological differences among population and identify probable sibling species (Frey, 1982; Kotov & Elías-Gutiérrez, 2009; Kotov & Sanoamuang, 2004)., Published as part of Lopez, Mark Louie D., Pascual, Jhaydee Ann F., Dela Paz, Erica Silk P., Rizo, Eric Zeus C., Tordesillas, Dino T., Guinto, Shea Kathleen, Han, Boping, Dumont, Henri J., Mamaril, Augustus C., Sr & Papa, Rey Donne S., 2017, Annot ated checklist and insular distribution of f reshwater microcrustaceans (Copepoda: Calanoida & Cyclopoida; Cladocera: Anomopoda & Ctenopoda) in the Philippines, pp. 623-654 in Raffles Bulletin of Zoology 65 on page 637, DOI: 10.5281/zenodo.5358372, {"references":["Smirnov NN (1992) The Macrothricidae of the World. The Netherlands: SPB Academic Publishing, 143 pp.","Herrick CL (1882) Notes on some Minnesota Cladocera. Annual Report - Geological and Natural History Survey of Minnesota, 10: 235 - 252.","Sars GO (1888) Additional notes on Australian Cladocera raised from dried mud. Forhandlinger i Videnskabs-Selskabet i Kristiania. Christiania, 1 - 74.","Daday E (1905) Untersuchungen uber die Susswasser-Mikrofauna Paraguays. Zoologica, Stuttgart, 18 (44): 1 - 374.","Mamaril AC (1986) Zooplankton (Vol. VII). In: Zamora PM & Co L (eds) Guide to Philippine Flora and Fauna. Quezon City: Natural Resources Management Center and University of the Philippines Diliman. 268 pp.","Mamaril Sr AC (2001) Zooplankton diversity in Philippine lakes. In: Santiago CB, Cuvin-Aralar ML & Basiao ZU (eds.) Conservation and Ecological Management of Philippine Lakes in Relation to Fisheries and Aquaculture. Quezon City: Southeast Asian Fisheries Development Center and Philippine Council for Aquatic and Marine Research and Development and Bureau of Fisheries and Aquatic Resources. Pp. 81 - 93.","Jeong HG, Kotov AA & Lee W (2012) A new species of the genus Ilyocryptus Sars, 1862 (Cladocera: Anomopoda: Ilyocryptidae) from the East Asian Palaearctic. Zootaxa, 3475: 36 - 44.","Kotov AA & Sanoamuang L (2005) Notes on the genus Ilyocryptus Sars, 1862 (Cladocera: Anomopoda: Ilyocryptidae). Ilyocryptus isanensis sp. n. from North-East Thailand. Arthropoda Selecta, 14: 229 - 239.","Kotov AA & Stifter P (2006) CLADOCERA: Family llyocryptidae (Branchiopoda: Cladocera: Anomopoda). The Netherlands: Backhuys Publishers, 172 pp.","Frey DG (1982) Questions concerning cosmopolitanism in Cladocera. Archiv fur Hydrobiologie, 93: 484 - 502.","Kotov AA & Elias-Gutierrez M (2009) A Phylogenetic Analysis of Ilyocryptus SARS, 1862 (Cladocera: Ilyocryptidae). International Review of Hydrobiology, 94: 208 - 225.","Kotov AA & Sanoamuang L (2004) Ilyocryptus thailandensis sp. nov. (Cladocera: Anomopoda: Ilyocryptidae) from North Thailand. International Review of Hydrobiology, 89: 206 - 214."]}

Published
2017
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21. Annot ated checklist and insular distribution of f reshwater microcrustaceans (Copepoda: Calanoida & Cyclopoida; Cladocera: Anomopoda & Ctenopoda) in the Philippines

Author

Lopez, Mark Louie D., Pascual, Jhaydee Ann F., Dela Paz, Erica Silk P., Rizo, Eric Zeus C., Tordesillas, Dino T., Guinto, Shea Kathleen, Han, Boping, Dumont, Henri J., Mamaril, Augustus C., and Papa, Rey Donne S.

Subjects
Branchiopoda, Arthropoda, Moinidae, Hexanauplia, Biodiversity, Cyclopoida, Anomopoda, Cyclopidae, Ilyocryptidae, Pseudodiaptomidae, Animalia, Chydoridae, Maxillopoda, Daphniidae, Calanoida, Diplostraca, Macrothrichidae, Taxonomy
Abstract

Lopez, Mark Louie D., Pascual, Jhaydee Ann F., Dela Paz, Erica Silk P., Rizo, Eric Zeus C., Tordesillas, Dino T., Guinto, Shea Kathleen, Han, Boping, Dumont, Henri J., Mamaril, Augustus C., Sr, Papa, Rey Donne S. (2017): Annot ated checklist and insular distribution of f reshwater microcrustaceans (Copepoda: Calanoida & Cyclopoida; Cladocera: Anomopoda & Ctenopoda) in the Philippines. Raffles Bulletin of Zoology 65: 623-654, DOI: http://doi.org/10.5281/zenodo.5358372, {"references": ["Adamczuk M (2014) Niche separation by littoral-benthic Chydoridae (Cladocera, Crustacea) in a deep lake - potential drivers of their distribution and role in littoral pelagic coupling. Journal of Limnology, 73: 490-501.", "Alekseev VR & Sanoamuang LO (2006) Biodiversity of cyclopoid copepods in Thailand - with description of Afrocyclops henrii sp.n. Arthropoda Selecta, 15: 227-290.", "Alonso M (1996) Crustacea, Branchiopoda. 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2017
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24. Moina micrura Kurz 1875

Author

Pascual, Jhaydee Ann F., Rizo, Eric Zeus C., Han, Boping, Dumont, Henri J., and Papa, Rey Donne S.

Subjects
Moina micrura, Branchiopoda, Arthropoda, Moinidae, Animalia, Biodiversity, Diplostraca, Moina, Taxonomy
Abstract

Moina micrura Kurz, 1875 Specimen examined. 11 adult parthenogenic female specimens from Lake Taal, Lake Sampaloc, and Candaba Swamp were examined and stored in University of Santo Tomas Zooplankton Reference Collection (UST-ZRC) with reference numbers 0072–0081, and 0093. Description. Moinidae is composed of only two genera: Moina and Moinodaphnia. Moina are found from temporary freshwater pools to brackish and saline lakes. Moina micrura are one of the smallest species in Family Moinidae. Mean length in all specimen examined is 1.1 mm. The head is evidently characterised by a well-developed supraocular depression and a large eye (Fig. 19A). The antennules of M. micrura are situated in a knob-liked position just behind the eye with two sensory setae in each located one-third to one-half the distance from the head. The sensory papillae are long and distinguishable. A distinct groove located behind the second antennae separates the head and the body. The exopod is composed of four-segmented ramus which contains heavy setation that extends from second to the fourth segment. Two short sensory setae are evident in the second antennae as shown in Fig. 19E. The P1 has reduced its filtering functions but have fewer setae compared to other sidids (Fig. 19D). Carapace is round and surrounded by 37–40 setae in the shell margin.The postabdomen is short and slender. The distal conical portion composes one-fourth of the total length. A sharp postabdominal claw contains three to eleven feathered teeth (Fig. 19C). The number of teeth varies on the body size of the specimen. Its dorsal margin is characterised by having several numbers of setae extend up to the sharp part of the claw. There is also a long bident tooth present located at the base of the feathered teeth. The long and sharply curved postabdominal claw contains four to seven sharp teeth that are also called “basaldorn” that extends towards the distal end (Goulden, 1968). Distribution. Ilocos Norte: Lake Paoay; Cagayan: Lake Nagatutuan; Benguet: Ambuklao Dam; Pangasinan: Fish Pond in Burgos; Tarlac: Lake Tambo; Nueva Ecija: Pantabangan Dam; Zambales: Lake Mapanuepe; Pampanga: Candaba swamp; National Capital Region (NCR): Pasig River, Marikina River; Laguna: Lake Bunot, Lake Palakpakin, Lake Sampaloc, Lake Pandin, Lake Kalibato, Lake Tadlak, Lake Caliraya, Lake Lumot-Mahipon, Laguna De Bay; Batangas: Taal Lake; Camarines Sur: Lake Buhi; Oriental Mindoro: Lake Naujan; Misamis Oriental: Lake Gumaod; South Cotabato: Lake Siloton, Lake Lahit, Lake Sebu (Fig. 18) Remarks. M. micrura can be distinguished from other Moinids based from its small size and by the complete absence of hairs on both the head and shell. The species is reported in the Palearctic region and also from the tropics and subtropics of America, Australia (2002) as well as in Africa and Europe (Goulden, 1968). Goulden (1968) also confirmed its presence in the Far East and Southeast Asia specifically in India, Indonesia and Taiwan. The species is mostly found in temporary water bodies but is also common in large plankton of large freshwater lakes (Fernando, 2002; Goulden, 1968)., Published as part of Pascual, Jhaydee Ann F., Rizo, Eric Zeus C., Han, Boping, Dumont, Henri J. & Papa, Rey Donne S., 2014, Taxonomy and distribution of four Cladoceran families (Branchiopoda: Cladocera: Moinidae, Bosminidae, Chydoridae and Sididae) in Philippine inland waters, pp. 771-794 in Raffles Bulletin of Zoology 62 on page 781, DOI: 10.5281/zenodo.5356221, {"references":["Kurz W (1875) Dodekas neuer Cladocera nebst Ubersicht der Cladocerenfauna Bohmens. Sitzungberichte / Akademie der Wissenschaften Wien, 70: 1 - 88.","Goulden C (1968) The Systematics and Evolution of the Moinidae. American Philosophical Society, 58: 5 - 101.","Fernando CH (2002) A Guide to Tropical Freshwater Zooplankton Identification, Ecology and Impact on Fisheries. Backhuys Publishers, Leiden, 291 pp."]}

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2014
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25. Taxonomy and distribution of four Cladoceran families (Branchiopoda: Cladocera: Moinidae, Bosminidae, Chydoridae and Sididae) in Philippine inland waters

Author

Pascual, Jhaydee Ann F., Rizo, Eric Zeus C., Han, Boping, Dumont, Henri J., and Papa, Rey Donne S.

Subjects
Branchiopoda, Insecta, Arthropoda, Moinidae, Bosminidae, Animalia, Biodiversity, Chydoridae, Cladocera, Diplostraca, Taxonomy
Abstract

Pascual, Jhaydee Ann F., Rizo, Eric Zeus C., Han, Boping, Dumont, Henri J., Papa, Rey Donne S. (2014): Taxonomy and distribution of four Cladoceran families (Branchiopoda: Cladocera: Moinidae, Bosminidae, Chydoridae and Sididae) in Philippine inland waters. Raffles Bulletin of Zoology 62: 771-794, DOI: http://doi.org/10.5281/zenodo.5356221, {"references":["Aquino M, Choi CD, Cruz MA, Saguitguit MG, & Papa RDS (2008) Zooplankton composition and diversity in Paoay Lake, Luzon Is., Philippines. Philippine Journal of Science, 137(2): 169-177.","Baird W (1843) The natural history of the British Entomostraca. Annual Magazine of Natural History, 11: 81-95.","Baird W (1846) On some new genera and species of British Entomostraca. The Annals and Magazine of Natural History, 17: 410-416.","Baird W (1850) The natural history of the British Entomostraca. Transactions of the Royal Society London, London, 364 pp.","Brehm V (1938) Die Cladoceren Der Wallacea-Expedition. 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Termeszetrajzi Fuzetek, 21: 1-123.","DENR (2010) The 4th Philippine National Report to the Convention on Biological Diversity Assessing Progress Towards the 2010 Biodiversity Target. Republic of the Philippines.","Dumont H & Negrea S (2002) Introduction to the Class Branchiopoda. Backhuys Publishers, Leiden, 398 pp.","Dybowski B & Grochowsky M (1894) O Lynceidach czyli Tonewkach fauny krajowe. Kosmos, 19: 376-383.","Elmoor-Loureino LMA (2006) Male claspers and lobes homology of the first thoracopod among cladocerans (Branchiopoda) Nauplius, 13(1) (printed in volume 14): 19-22.","Fernando CH (1980) The species and size composition of tropical freshwater zooplankton with special reference to the Oriental Region (South East Asia). Hydrobiologia, 65(3): 411-426.","Fernando CH (2002) A Guide to Tropical Freshwater Zooplankton Identification, Ecology and Impact on Fisheries. Backhuys Publishers, Leiden, 291 pp.","Fischer S (1850) Erganzungen, Berichtingungen und Fortsetzung zu der Abhandlung fiber die in der Umgebung von St. Petersburg vorkommenden Crustaceen aus der Ordnung der Branchiopoden und Entomostraceen. Memoires presentes a l'Academie Imperiale des Sciences de St. Petersbourg par divers savants, 7: 1-14.","Forro L, Korovchinsky NM, Kotov AA, Petrusek A (2011) Global diversity of cladocerans (Cladocera; Crustacea) in freshwater. Hydrobiologia, 595: 177-184.","Frey DG (1982) Relocation of Chydorus barroisi and related species (Cladocera, Chydoridae) to a new genus and description of two new species*. Hydrobiologia, 86: 231-269.","Fryer G (1968) Evolution and adaptive radiation in the Chydoridae (Crustacea:Cladocera): a study in comparative functional morphology and ecology. Philosophical Transactions of the Royal Society of London. Series B. Biological Sciences, 254: 221-384.","Goulden C (1968) The Systematics and Evolution of the Moinidae. American Philosophical Society, 58: 5-101.","Guevara G, Lozano P, Reinoso G, & Villa F (2009) Horizontal and seasonal patterns of tropical zooplankton from the eutrophic Prado Reservoir (Colombia). Limnologica, 39: 128-139.","Herrick CL (1887) Contribution to the fauna of the Gulf of Mexico and the South. List of the fresh-water and marine Crustacea of Alabama, with descriptions of the new species and synoptical keys for identification. Memoirs of the Denison Scientific Association, Granville, Ohio, 1(1): 1-56.","King RL (1853) On Australian Entomostracans. Papers and Proceedings of the Royal Society of van Diemen's Land, 2: 253-263.","Korinek V, Sacherova V & Havel L (1997) Subgeneric differences in head shield and ephippia ultrastructure within the genus Bosmina Baird (Crustacea, Cladocera). Hydrobiologia, 360: 13-23.","Korinek V, Saha RK & Bhattacharya T (1999) A new member of the subgenus Sinobosmina Lieder, 1957: Bosmina tripurae sp. n. (Crustacea, Cladocera) from India. Hydrobiologia, 392: 241-247.","Korinek V (2002) Cladocera. In: Fernando CH (ed.) A Guide to Tropical Freshwater Zooplankton - Identification, Ecology and Impact on Fisheries. Backhuys Publishers, Leiden. Pp. 69-122.","Korovchinsky NM (1991) A redescription of Diaphanosoma modigliani Richard, 1894 (Crustacea: Daphniiformes: Sididae) and an evaluation of its occurrence outside Lake Toba (Sumatra). Hydrobiologia, 222: 179-186.","Korovchinsky NM (1992) Sididae and Holopediidae. Hague, Netherlands: SPB Academic Publishing, 1-73 pp.","Korovchinsky NM (1995) Redescription of Diaphanosoma volzi Stingelin, 1905 (Crustacea: Daphniiformes: Sididae) with remarks on comparative morphology, biology and geographical distribution. Hydrobiologia, 315:189-201.","Korovchinsky NM (1996) How many species of Cladocera are there? Hydrobiologia, 321: 191-204.","Korovchinsky NM (1998) Revision of the Diaphanosoma modigliani - Diaphanosoma dubium species group (Crustacea: Ctenopoda: Sididae), with description of a new species from Tropical Asia. Hydrobiologia, 361: 113-123.","Korovchinsky NM (2000) Species richness of pelagic Cladocera of large lakes in the eastern hemisphere. Hydrobiologia, 434: 41-54.","Korovchinsky NM (2013) Cladocera (Crustacea: Branchiopoda) of South East Asia: history of exploration, taxon richness and notes on zoogeography. Journal of Limnology, 72: 109-124.","Kotov A, Ishida S & Taylor D (2009) Revision of the genus Bosmina Baird, 1845 (Cladocera: Bosminidae), based on evidence from male morphological characters and molecular phylogenies. Zoological Journal of the Linnean Society, 156: 1-51.","Kurz W (1875) Dodekas neuer Cladocera nebst Ubersicht der Cladocerenfauna Bohmens. Sitzungberichte/Akademie der Wissenschaften Wien, 70: 1-88.","Mamaril Sr AC & Fernando CH (1978) Freshwater zooplankton of the Philippines: Rotifera, Cladocera and Copepoda. Natural and Applied Science Bulletin, 30(4): 109-221.","Mamaril Sr AC (2001) Zooplankton diversity in Philippine lakes. In: Santiago CB, Cuvinaralar ML & Basiao ZU (eds.) Conservation and Ecological Management of Philippine Lakes in Relation to Fisheries and Aquaculture. Southeast Asian Fisheries Development Center. Philippine Council for Aquatic and Marine Research and Development and Bureau of Fisheries and Aquatic Resources, Quezon City, Philippines. Pp. 81-93.","Manuilova EF (1964). Vetvistousye raciki (Cladocera) fauna SSSR. Opredelitel fauna SSSR, Mosksva-Leningrad 88, 327 pp.","Muller OF (1785) Entomostraca seu Insecta Testacea, quae in aquis Daniae et Norvegiae reperit, descripsit et iconibus illustravit. Lipsiae et Havniae, 135 pp.","Myers N, Mittermeier R, Mittermeier C, da Fonseca G & Kent G (2000) Biodiversity hotspots for conservation priorities. Nature. 403: 853-858.","Ong PS, Afuang LE & Rosell-Ambal RG (2002) Philippine biodiversity conservation priorities: A second iteration of the national biodiversity strategy and action plan. University of the Philippines Center for Integrative and Development Studies (UPCIDS) and Foundation for the Philippine Environment (FPE), Quezon City, Philippines, 113 pp.","Papa RDS & M Holynska (2013) An overview of the limnetic Cyclopidae (Crustacea, Copepoda) in the Philippines, with emphasis on Mesocyclops. Journal of Limnology, 72(s2): 290-312.","Papa RDS, Pagulayan RC, & Pagulayan AEJ (2008) Zooplanktivory in the endemic freshwater sardine, Sardinella tawilis (Herre 1927) of Taal Lake, the Philippines. Zoological Studies, 47(5): 535-543.","Papa RDS & Mamaril Sr AC (2011) History of the biodiversity and limno-ecological studies on Lake Taal with notes on the current state of Philippine limnology. Philippine Science Letters, 4(1): 1-10.","Papa RDS, Tordesillas D & Mamaril Sr AC (2012) An updated taxonomic account of limnetic crustacean zooplankton in Lake Taal, Philippines. Philippine Journal of Science, 141(2): 243-252.","Papa RDS & Zafaralla M (2011) The composition, diversity, and dynamics of limnetic zooplankton in a tropical caldera lake (Lake Taal, Philippines). The Raffles Bulletin of Zoology, 59(1): 1-7.","Petersen F & Carlos M (1984) A Review of zooplankton in Philippine Lakes. Fisheries Research Journal of the Philippines, 9(1-2): 56-64.","Petersen F (2009) An Illustrated Key to the Philippine Freshwater Zooplankton. Including some Brackish Water Species from Laguna de Bay. With Ecological Notes. http://www.dafnier.dk/ philippines/keyzooplankton/introduction/an_illustrated_key.htm (Accessed 17 September 2013)","Richard J (1894) Cladoceres recueillis par le Dr. Th. Barrois en Palestine, en Syrie et an Egypte (mars-juin 1890). Revue biologique nord France, 6: 360-378.","Richard J (1895) Revision des Cladoceres I et II. Annales des sciences naturelles. Zoologie et biologie animale, 18: 279-397.","Sars GO (1885) On some Australian Cladocera raised from dried mud. Forhandlinger i Videnskabs-selskabet i Christiania, 8: 1-46.","Sars GO (1888) Additional notes on Australian Cladocera raised from dried mud. Forhandlinger i Videnskabs-selskabet i Christiania, 7: 1-74.","Smirnov NN (1967) On age morphological changes of males of Chydoridae (Cladocera). Hydrobiologia, 30(3-4): 555-571.","Smirnov NN (1971) Chydoridae fauny mira. Fauna SSSR 1, 2 (n.s. 101), Leningrad, 531 pp. (English translation: Jerusalem, 1974, 644 pp.).","Smirnov NN (1996) Cladocera: The Chydorinae and Sayciinae (Chydoridae) of the World. Hague, Netherlands: SPB Publishing, Hague, 183 pp.","Tsi-Chung C & Clemente L (1954) The classification and distribution of freshwater cladocerans around Manila. Natural and Applied Science Bulletin, 14: 85-150.","Ueno M (1966) Freshwater Zooplankton of Southeast Asia. The Southeast Asian Studies, 3: 94-109.","Van Damme K, Sinev AY, & Dumont HJ (2011) Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera:Anomopoda): morphology and evolution of scraping stenothermic alonines. Zootaxa, 2875: 1-64.","Woltereck R, Tressler WS, & Bunag DM (1941) Die Seen und Inseln der \"Wallacea\"-Zwishenregion und ihre endemische Tierwelt. Zweiter Teil: Inseln und Seen der Philippinen. Internationale Revue der Gesamten Hydrobiologie und Hydrographie, 41: 37-176."]}

Published
2014
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26. Bosmina fatalis Burckhardt 1924

Author

Pascual, Jhaydee Ann F., Rizo, Eric Zeus C., Han, Boping, Dumont, Henri J., and Papa, Rey Donne S.

Subjects
Branchiopoda, Arthropoda, Bosmina, Bosminidae, Bosmina fatalis, Animalia, Biodiversity, Diplostraca, Taxonomy
Abstract

Bosmina fatalis Burckhardt, 1924 Specimen examined. 12 samples from Lake Taal, Lake Buhi, Laguna de Bay, Lake Lumot-Mahipon and Pantabangan Dam were examined and stored in UST-ZRC with reference numbers 0083–0089, 0094A–0095A and 00134–00136. Description. Body length ranges in 0.4–0.6 mm. Bosmina fatalis has a long rostrum fused with antennules of variable length and shape (Fig. 3B). B. fatalis in the study has an oval shaped front head pore situated at the midpoint between the two frontal setae that conforms to the description of (Fig. 4D) that conforms to the description of Ko&rcaron;ínek et al. (1997). A small and round median head pore (MHP) is also located on the dorsal surface of the head which is connected to the cord-like structure that is suggested to be a supraeosophageal ganglion (Ko&rcaron;ínek et al., 1997). Long mucro situated at the distal end of the carapace. Setules are observed in the postabdomen with a slightly convex ventral margin and an anal opening at the lateral aspect. The postabdominal claw consists of a row of 6–8 teeth with minute spines continuing ventrally (Fig. 3C). Distribution. Cagayan: Lake Bangalau, Benguet: Ambuklao dam; Nueva Ecija: Pantabangan dam; Tarlac: Lake Tambo; National Capital Region (NCR): Pasig River, Marikina River; Laguna: Lake Palakpakin, Lake Kalibato, Lake Yambo, Lake Tadlak, Lake Caliraya, Lake Lumot-Mahipon; Batangas: Lake Taal; Camarines Sur: Lake Buhi, Lake Bato; Sorsogon: Lake Bulusan; Oriental Mindoro: Lake Naujan; Negros Oriental: Lake Danao, Lake Kabalin-an; Lanao del Norte: Agus IV Dam; Agusan Del Norte: Lake Mainit; South Cotabato: Lake Lahit, Lake Siloton, Lake Sebu; Lanao del Sur: Lake Lanao (Fig. 2). Remarks. B. fatalis collected in the Philippines were compared to the same species sampled in Taihu Lake, China (type locality). The species is reported in East Asian lakes and reservoirs. B. fatalis can also be found from the temperate zone in the north to the subtropical and tropical areas (Japan, Philippines, China and Indonesia) (Fernando, 2002)., Published as part of Pascual, Jhaydee Ann F., Rizo, Eric Zeus C., Han, Boping, Dumont, Henri J. & Papa, Rey Donne S., 2014, Taxonomy and distribution of four Cladoceran families (Branchiopoda: Cladocera: Moinidae, Bosminidae, Chydoridae and Sididae) in Philippine inland waters, pp. 771-794 in Raffles Bulletin of Zoology 62 on pages 773-774, DOI: 10.5281/zenodo.5356221, {"references":["Burckhardt G (1924) Wissenschaftlishe Ergebnisse einer Reise um die Erde von M. Pernod und C. Schroter. III. Zooplankton aus ost und sud-asiatischen Binnengewassern. Zeitschrift fur Hydrobiologie, 2: 217 - 242.","Korinek V, Sacherova V & Havel L (1997) Subgeneric differences in head shield and ephippia ultrastructure within the genus Bosmina Baird (Crustacea, Cladocera). Hydrobiologia, 360: 13 - 23.","Fernando CH (2002) A Guide to Tropical Freshwater Zooplankton Identification, Ecology and Impact on Fisheries. Backhuys Publishers, Leiden, 291 pp."]}

Published
2014
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27. Small Maar Lakes of Luzon Island, Philippines: Their Limnological Status and Implications on the Management of Tropical Lakes – A Review.

Author

Mendoza, Milette U., Briones, Jonathan Carlo A., Itoh, Masayuki, Padilla, Karol Sophia Agape R., Aguilar, Jaydan I., Okuda, Noboru, and Papa, Rey Donne S.

Subjects
LAKE management, WATER quality monitoring, ECOSYSTEM management, NATURAL resources, LAKES, ECOSYSTEM services
Abstract

In developing countries such as the Philippines, the inadequacy of even the most basic limnological datasets available has hindered planning and implementation of science-based management policies for inland waters. This situation is aggravated by overutilization of natural resources for ecosystem services such as water usage, aquaculture, fishing, and tourism. We reviewed published researches related to the Seven Maar Lakes (SMLs) in Luzon Is., Philippines to summarize information invaluable for the protection and sustainable use of these resources. Popular scientific search engines were utilized to gather peer-reviewed research articles and reports from both private institutions and government agencies. Literature and timeline from the 1930s to 2019 was classified into topics – namely socioeconomics, fisheries, biodiversity, and environment. Based on the literature survey, a variety of challenges, knowledge gaps, and promising research directions were identified, which are essential to the sustainable ecosystem management of the SMLs. Aquaculture practices impacting the lakes and its underestimated biodiversity were described. Measured vertical profiles of dissolved oxygen (DO), temperature, conductivity, pH, and salinity was supplemented by our preliminary limnological survey in the SMLs. Past and present monitoring data of selected physicochemical parameters were assessed from which the changing limnological status of the lakes was determined. We recommended measures motivated by strategic environmental assessments while still considering maintained economic yields. A sustained collaborative effort from different sectors is strongly suggested not only to manage the SMLs but also to address trade-offs among critical ecosystem services. Aside from the need for well-designed, long-term water quality monitoring, we also stress the synergistic interpretation of all available knowledge, which can contribute to the resolution of environmental issues at both local and global scales. [ABSTRACT FROM AUTHOR]

Published
2019

32. THE COMPOSITION, DIVERSITY AND COMMUNITY DYNAMICS OF LIMNETIC ZOOPLANKTON IN A TROPICAL CALDERA LAKE (LAKE TAAL, PHILIPPINES).

Author

Papa, Rey Donne S. and Zafaralla, Macrina T.

Subjects
*ZOOPLANKTON, *CALDERAS, *SARDINELLA, *SPECIES diversity, *BIOTIC communities, *CRATER lakes, *EUTROPHICATION, *LIMNOLOGY
Abstract

Limnetic zooplankton serve as a major food source for pelagic fi sh. This paper updates the species composition, diversity and community dynamics of limnetic zooplankton in the two basins of Lake Taal, an active caldera lake ecosystem. Samples obtained from January to December 2008 included 15 rotifer, six cladoceran and three copepod species. Eight species are new records for the lake. The zooplankton community is dominated by copepods, which contributed 64% to total abundance and 84% to total biomass. Diversity values for rotifers and cladocerans were low and similar in both lake basins. The composition, diversity and homogenous spatial distribution of zooplankton in Lake Taal is typical for tropical lakes with a high trophic state which may be a response to the prevailing conditions infl uenced by its location, geological origin and meteorological factors. [ABSTRACT FROM AUTHOR]

Published
2011

33. Zooplanktivory in the Endemic Freshwater Sardine, Sardinella tawilis (Herre 1927) of Taal Lake, the Philippines.

Author

Papa, Rey Donne S., Pagulayan, Roberto C., and Pagulayan, Alicia Ely J.

Subjects
ZOOPLANKTON, FRESHWATER fishes, SARDINES, COPEPODA
Abstract

The article discusses findings of a study on the composition and quantity of zooplankton found in freshwater sardine that were caught in Taal Lake, Philippines. The research revealed that 90 percent of the stomach contents of freshwater sardine consisted of large adult copepods and 10 percent cladocerans and rotifers. An analysis of collected samples from July 2003 to July 2004 to determine the zooplankton diet of Sardinella tawilis determined that freshwater sardine prefers to consume larger prey since they are more visible. Researchers noted that smaller-bodied organisms dominated the zooplankton community because of size-selective predation.

Published
2008

34. Evaluation of Phage Delivery Systems on Induced Motile Aeromonas Septicemia in Oreochromis niloticus .

Author

Gordola KMC, Boctuanon FAU, Diolata RAA, Pedro MBD, Gutierrez TAD, Papa RDS, and Papa DMD

Abstract

Background: The success of phage therapy is affected by the method of treatment delivery. This study focused on comparing different phage delivery routes, specifically oral (phage-impregnated feed), intraperitoneal (IP), and bath (immersion), in treatment of induced motile Aeromonas septicemia (MAS). Materials and Methods: The efficacy of Aeromonas hydrophila phage cocktail in treating MAS-infected Oreochromis niloticus through different delivery routes was assessed by challenging the fish with 100% lethal dose of A. hydrophila and conducting a 15-day treatment regimen. Blood and kidney samples were analyzed for bacterial and phage concentrations. Results: All routes exhibited reduction of disease symptoms, significant ( p  < 0.05) decrease in bacterial count, and increase in phage count. Notably, IP route showed significant activity in reducing bacterial load. Conclusions: Phage therapy through IP route is the most effective yet invasive in controlling MAS infection in O. niloticus . The efficacy of oral route depends on the fish's intake of feeds, whereas the bath route was the least effective., Competing Interests: No competing financial interests exist., (Copyright 2020, Mary Ann Liebert, Inc., publishers.)

Published
2020
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