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http://dx.doi.org/10.13047/KJEE.2016.30.3.369

Fish Fauna in the Bolaven Plateau and Trophic Polymorphism of Poropuntius bolovenensis in Laos  

Kang, Dong-Won (School of Biological Sciences and Biotechnology, Chonnam National University)
THAMAVONGSENG, Payou (Xe-Pian Xe-Namnoy Power Company Limited)
Lee, Hak Young (Department of Biological Sciences, Chonnam National University)
Choi, Seung-Ho (Korean Association for Conservation of Freshwater Fish)
Publication Information
Korean Journal of Environment and Ecology / v.30, no.3, 2016 , pp. 369-375 More about this Journal
Abstract
This survey was conducted during March to April 2014 in the main stream and tributaries of Xe Pian and Xe Namnoy in order to investigate fish fauna in the Bolaven Plateau. Fish belonging to twenty eight species and eight families were collected from the main stream and tributaries of Xe Namnoy and Xe Pian during the survey period. Among them, Devario salmonatus, Poropuntius bolovenensis, Annamia sp., Sewellia elongata, Schistura bolavenensis, Schistura sp.1, Schistura sp.2, Schistura sp.3, Schistura sp.4, and Macronathus sp. were endemic species in the Bolaven Plateau, indicating a high prevalence rate of endemic species (35.7%) in the area. Meanwhile, Kottelat (2000, 2013) has been reported that four species of Poropuntius inhabit the Bolaven Plateau. However, the major morphic characteristics of Poropuntius species found in the Bolaven Plateau were mostly overlapped, except for the shape of their mouth. The young fish of Poropuntius (> 70 mm SL) have only generalized mouth while the of adult fish the shape of their mouth have two phenotype (narrow and broad). Therefore, it is assumed that Poropuntius species in the Bolaven Plateau has trophic polymorphism as the same species exhibits two different mouth shapes.
Keywords
XE PIAN; XE NAMNOY; Poropuntius; ENDEMIC SPECIES;
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