Our knowledge of the freshwater cyclopid copepods of the Visayas Islands remains poor as compared to other terrestrial and aquatic fauna. This study focuses on two genera, Mesocyclops and Thermocyclops, which are common components of lake plankton communities. This study included specimens collected from 59 sampling sites found in major islands (Panay, Negros, Cebu, Bohol, Leyte and Samar) and a small island (Pacijan) in the Visayas region. Four species of Mesocyclops and three species of Thermocyclops were identified. This includes the first record of Mesocyclops woutersi in the Philippines, which was so far unknown from insular SE Asia. The endemic Mesocyclops microlasius, previously reported from Luzon Island, was also found in Lake Danao (Pacijan Island). An identification key to Philippine species of Mesocyclops and Thermocyclops is herein provided. Geographic distribution and possible causes of the low number of species observed and their implications for further faunal studies are also discussed.
Notre connaissance des copépodes cyclopides d’eau douce des îles Visayas demeure pauvre en comparaison de celle de la faune terrestre et aquatique. Cette étude porte sur deux genres Mesocyclops et Thermocyclops, qui sont des composants communs des communautés planctoniques des lacs. Cette étude porte sur les spécimens collectés dans 59 sites d’échantillonnage sur les îles les plus importantes (Panay, Negros, Cebu, Bohol, Leyte, et Samar) et sur une petite île (Pacijan), dans la région des Visayas. Quatre espèces de Mesocyclops et trois espèces de Thermocyclops ont été identifiées. L’étude inclut le premier signalement de Mesocyclops woutersi aux Philippines, cette espèce étant jusqu’à présent inconnue en Asie du Sud-Est insulaire. L’espèce endémique Mesocyclops microlasius, précédemment connue de l’île Luzon, a été trouvée aussi au lac Danao (île Pacijan). Une clé d’identification des espèces de Mesocyclops et de Thermocyclops des Philippines est fournie ici. La répartition géographique et les causes possibles du faible nombre d’espèces observées et leurs implications pour les études faunistiques ultérieures sont aussi discutées.
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Our knowledge of the freshwater cyclopid copepods of the Visayas Islands remains poor as compared to other terrestrial and aquatic fauna. This study focuses on two genera, Mesocyclops and Thermocyclops, which are common components of lake plankton communities. This study included specimens collected from 59 sampling sites found in major islands (Panay, Negros, Cebu, Bohol, Leyte and Samar) and a small island (Pacijan) in the Visayas region. Four species of Mesocyclops and three species of Thermocyclops were identified. This includes the first record of Mesocyclops woutersi in the Philippines, which was so far unknown from insular SE Asia. The endemic Mesocyclops microlasius, previously reported from Luzon Island, was also found in Lake Danao (Pacijan Island). An identification key to Philippine species of Mesocyclops and Thermocyclops is herein provided. Geographic distribution and possible causes of the low number of species observed and their implications for further faunal studies are also discussed.
All Time | Past Year | Past 30 Days | |
---|---|---|---|
Abstract Views | 530 | 112 | 6 |
Full Text Views | 182 | 1 | 0 |
PDF Views & Downloads | 18 | 4 | 0 |