The First Record of Cave-Dwelling Copepoda from Thailand and Description of a New Species: Elaphoidella Namnaoensis n. sp. (Copepoda, Harpacticoida)

摘要

During a brief collecting expedition in Nam Nao National Park, Phetchabun province (northern Thailand) in November 2007, various water bodies connected with subterranean water were sampled. In five caves, eight samples were collected from pools and six species of Copepoda were collected. For the first time, a stygobiotic (= cave-dwelling) species of Copepoda was discovered in Thailand. It belongs to the order Harpacticoida and was recognized as a new species, Elaphoidella namnaoensis n. sp. Specimens were only collected from pools filled by percolating water. This indicates a specific ecology of the new species, linked to the unsaturated zone of karstic aquifers, where the hydrology is determined exclusively by rainfall. A detailed description of the new species is presented here, supplemented with some information on its ecology and morphological adaptations. These adaptations are compared to those found in other Elaphoidella species from the unsaturated zone of karstic aquifers in Europe. FrenchAu cours d'une breve mission de recolte au Parc National de Nam Nao, province de Phetchabun (nord de la Thailande) en novembre 2007, des collections d'eau variees en relation avec les eaux souterraines ont ete echantillonnees. Dans cinq grottes, huit echantillons ont ete recoltes dans des bassins et six especes de copepodes ont ete obtenues. Pour la premiere fois, une espece stygobie (vivant dans les grottes) de copepodes a ete decouverte en Thailande. Elle appartient a l'ordre des Harpacticoida et a ete reconnue comme une espece nouvelle: Elaphoidella namnaoensis n. sp. Les specimens ont ete recueillis seulement dans les bassins remplis d'eau de percolation. Ceci indique une ecologie particuliere pour cette nouvelle espece, liee a la zone insaturee de l'aquifere karstique, ou l'hydrologie est determinee exclusivement par les precipitations. Une description detaillee de la nouvelle espece est presentee ici, completee par des informations sur son ecologie et ses adaptations morphologiques. Ces adaptations sont comparees a celles rencontrees chez d'autres Elaphoidella de la zone insaturee des aquiferes karstiques d'Europe. References: 14 references open in new window Articles that cite this article?