Recent collections of Rafflesia manillana Teschem. from its type locality in Basey, Samar Island, Philippines, and the description of several new small-diameter Rafflesia species in the Philippines necessitated a close re-examination of R. manillana throughout its known distributional range. The description of R. manillana is hereby amended to include newly recorded characters and to distinguish it from other Rafflesia species. An epitype is designated.
{"title":"On the identity of Rafflesia manillana Teschem. (Rafflesiaceae)","authors":"D. Madulid, E. Agoo","doi":"10.3860/PSCI.V44I0.379","DOIUrl":"https://doi.org/10.3860/PSCI.V44I0.379","url":null,"abstract":"Recent collections of Rafflesia manillana Teschem. from its type locality in Basey, Samar Island, Philippines, and the description of several new small-diameter Rafflesia species in the Philippines necessitated a close re-examination of R. manillana throughout its known distributional range. The description of R. manillana is hereby amended to include newly recorded characters and to distinguish it from other Rafflesia species. An epitype is designated.","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"236 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116220194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Charmaine Clair Carayo, Kathleen Chloe Culango, Diomedes Estrera, D. Largo, D. Dy
{"title":"Correlation of inorganic nutrients to the standing crop of “green tide” algae during the peak growth season in eastern Mactan island, central Philippines","authors":"Charmaine Clair Carayo, Kathleen Chloe Culango, Diomedes Estrera, D. Largo, D. Dy","doi":"10.3860/PSCI.V42I0.357","DOIUrl":"https://doi.org/10.3860/PSCI.V42I0.357","url":null,"abstract":"","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115997199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Temperature tolerance of some species of Philippine intertidal echinoderms","authors":"Jonathan P. Ubaldo, Frederick A. Uy, D. Dy","doi":"10.3860/PSCI.V44I0.381","DOIUrl":"https://doi.org/10.3860/PSCI.V44I0.381","url":null,"abstract":"","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120941639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The aim of this study was to determine the influence of heavy monsoon rainfall on the nematode species diversity on the intertidal sandy and mangroves areas. The approach taken was to perform a survey of the nematodes and certain environmental parameters of sandy and mangrove areas at Lok Kawi beach, Kota Kinabalu, Sabah, Malaysia. Two stations were established at the sandflat (S1) and mudflat (mangrove) areas (S2) of the Lok Kawi beach. Stations 1 and 2 are located at the same tidal level (Mean High Water Neap). Sampling was carried out once every two weeks for periods of 18 months. The species diversity and species richness in the sandy station were lower in February and April 1993. In the muddy station, the species diversity and number of species were lower in May 1993. The rainfall had a strong correlation with the species richness at the sandy station, and thus influenced the diversity of the nematodes. Low rainfall in the drier months (Jan to March) triggered blooms of benthic algae and caused the dominant nematode species to increase in densities. However, the number of nematodes species were reduced possibly due to high competition for food amongst the species.
{"title":"Seasonal variations of marine nematode assemblages in Sabah, Malaysia","authors":"M. Shabdin, Othman Ross","doi":"10.3860/PSCI.V42I0.359","DOIUrl":"https://doi.org/10.3860/PSCI.V42I0.359","url":null,"abstract":"The aim of this study was to determine the influence of heavy monsoon rainfall on the nematode species diversity on the intertidal sandy and mangroves areas. The approach taken was to perform a survey of the nematodes and certain environmental parameters of sandy and mangrove areas at Lok Kawi beach, Kota Kinabalu, Sabah, Malaysia. Two stations were established at the sandflat (S1) and mudflat (mangrove) areas (S2) of the Lok Kawi beach. Stations 1 and 2 are located at the same tidal level (Mean High Water Neap). Sampling was carried out once every two weeks for periods of 18 months. The species diversity and species richness in the sandy station were lower in February and April 1993. In the muddy station, the species diversity and number of species were lower in May 1993. The rainfall had a strong correlation with the species richness at the sandy station, and thus influenced the diversity of the nematodes. Low rainfall in the drier months (Jan to March) triggered blooms of benthic algae and caused the dominant nematode species to increase in densities. However, the number of nematodes species were reduced possibly due to high competition for food amongst the species.","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126848299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Genus Psychotria (Rubiaceae) in the Philippine Archipelago. Symour H. Sohmer and Aaron P. Davis.","authors":"L. Liao","doi":"10.3860/PSCI.V44I0.382","DOIUrl":"https://doi.org/10.3860/PSCI.V44I0.382","url":null,"abstract":"","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128972706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Imposex in cronia margariticola (Mollusca, Prosobranchia) as a potential marine pollution biomonitor around Mactan island, central Philippines","authors":"M. A. Q. Astilla, Karl Owen L. Suan, L. Liao","doi":"10.3860/PSCI.V42I0.361","DOIUrl":"https://doi.org/10.3860/PSCI.V42I0.361","url":null,"abstract":"","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130157114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Some shallow-water hermit crabs of the genus Dardanus Paul’son 1875 (Decapoda: Paguroidea: Diogenidae) from the Visayan region of the Philippines with notes on their color and ecology","authors":"P. M. Cassidy","doi":"10.3860/PSCI.V42I0.362","DOIUrl":"https://doi.org/10.3860/PSCI.V42I0.362","url":null,"abstract":"","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128639241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Paula Wendy M. Lozada, Libertine Agatha J. Flores, R. M. Tan, D. Dy
The hypothesis that the sea hare, Dolabella auricularia (Gastropoda: Aplysiidae) is capable of regulating the biomass of the dominant macroalga, Cladophora sp. and thus restructure the algal assemblage in a small shallow water embayment eastern Mactan Is., central Philippines was explored. A mark and recapture technique was employed to quantify the overall population of Dolabella in the area. A feeding experiment was also conducted to determine if algal type (food preference among the green alga, Cladophora sp., the brown alga, Sargassum cristaefolium and the seagrass Cymodocea rotundata), time of day (daytime vs nighttime) and size (small vs large specimens) could significantly affect the feeding rate of D. auricularia. The estimated population of D. auricularia ranged from 4,163 – 14,288 individuals. Assuming only 2 hectares of the 15-hectare embayment are inhabited by the sea hare, the population density would ranged from 2-7 individuals/10 m. The ingestion rate by food type showed the following order of preference: Cladophora sp. > C. rotundata > S. cristaefolium. Time of day did not significantly affect overall ingestion rate of the sea hare. However, smaller individuals ( 100 g) whether it is during the day or night. The daily ration of D. auricularia for the green alga, Cladophora is about 47 g FW *Corresponding author’s email address: dydt_up@yahoo.com The Philippine Scientist, Volume 42 (2005) 68 for sea hare 100 g. Considering the population size of the Dolabella and its ingestion rate with particular preference for Cladophora, it can be deduced that the D. auricularia population should be an important structuring force in regulating the growth of Cladophora in the shallow embayment.
假设海兔Dolabella auricularia(腹足纲:海兔科)能够调节优势大型藻类Cladophora sp.的生物量，从而重组Mactan岛东部一个小型浅水海湾的藻类组合。在菲律宾中部进行了勘探。采用标记和捕获技术对该地区多拉贝拉的总数量进行了量化。通过取食实验，确定了藻类类型(绿藻、Cladophora sp.、褐藻、马尾藻和圆形海草的食物偏好)、时间(白天与夜间)和大小(小标本与大标本)对黑木耳海参取食率的影响。黑木耳鼠的估计种群数量在4163 ~ 14288只之间。假设在15公顷的围场中只有2公顷有海兔居住，则种群密度为2-7只/10米。不同食物类型的食入率依次为:竹叶菜>圆叶菜>凤尾花。一天中的时间对海兔的总体摄食率没有显著影响。然而，较小的个体(100克)无论是在白天还是晚上。D. auricularia对绿藻Cladophora的日定量约为47 g FW *通讯作者的电子邮件地址:dydt_up@yahoo.com The Philippine Scientist, Volume 42 (2005) 68 for sea hare 100 g。考虑到Dolabella的种群规模及其对Cladophora特别偏爱的摄食率，可以推断，黑木耳D. auricularia种群应该是调节浅海湾Cladophora生长的重要结构力量。
{"title":"Abundance and ingestion rate of the sea hare, Dolabella auricularia (Lightfoot, 1786) in a shallow embayment (eastern Mactan Is., Cebu central Philippines)","authors":"Paula Wendy M. Lozada, Libertine Agatha J. Flores, R. M. Tan, D. Dy","doi":"10.3860/PSCI.V42I0.360","DOIUrl":"https://doi.org/10.3860/PSCI.V42I0.360","url":null,"abstract":"The hypothesis that the sea hare, Dolabella auricularia (Gastropoda: Aplysiidae) is capable of regulating the biomass of the dominant macroalga, Cladophora sp. and thus restructure the algal assemblage in a small shallow water embayment eastern Mactan Is., central Philippines was explored. A mark and recapture technique was employed to quantify the overall population of Dolabella in the area. A feeding experiment was also conducted to determine if algal type (food preference among the green alga, Cladophora sp., the brown alga, Sargassum cristaefolium and the seagrass Cymodocea rotundata), time of day (daytime vs nighttime) and size (small vs large specimens) could significantly affect the feeding rate of D. auricularia. The estimated population of D. auricularia ranged from 4,163 – 14,288 individuals. Assuming only 2 hectares of the 15-hectare embayment are inhabited by the sea hare, the population density would ranged from 2-7 individuals/10 m. The ingestion rate by food type showed the following order of preference: Cladophora sp. > C. rotundata > S. cristaefolium. Time of day did not significantly affect overall ingestion rate of the sea hare. However, smaller individuals ( 100 g) whether it is during the day or night. The daily ration of D. auricularia for the green alga, Cladophora is about 47 g FW *Corresponding author’s email address: dydt_up@yahoo.com The Philippine Scientist, Volume 42 (2005) 68 for sea hare 100 g. Considering the population size of the Dolabella and its ingestion rate with particular preference for Cladophora, it can be deduced that the D. auricularia population should be an important structuring force in regulating the growth of Cladophora in the shallow embayment.","PeriodicalId":206512,"journal":{"name":"The Philippine Scientist","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126969011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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