Journal
JOURNAL OF GREAT LAKES RESEARCH
Volume 35, Issue 2, Pages 169-174Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jglr.2008.11.014
Keywords
Tonle Sap Great Lake; Fishing effort; Catch-per-unit-effort; Schaefer model; Henicorhynchus spp.; Cyclocheilichthys enoplos; Channa microplestes
Funding
- Sunada CREST and COE Programs, University of Yamanashi, Japan
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Tonle Sap Great Lake, in the lower Mekong River basin, contributes 60% of Cambodia's inland fisheries catch. There are four types of fisheries, including the middle-scale fishery. The major species comprising the middle-scale fishery are Henicorhynchus spp. (16%), a small-bodied fish caught mainly with small-mesh nets, and Cyclocheilichthys enoplos (13%), and Channa micropeltes (7%) which are caught with a variety of gear. Here we apply the Schaefer surplus production model to the middle-scale fisheries using monitoring data collected between 1995 and 1999. Model simulations determined that the maximum sustainable yield (F-MSY) for Henicorhynchus spp., was obtained with the use of 47,206 gillnets (mesh size <50 mm) and 4269 and 1605 fishing boats for C. enoplos and C. microplestes, respectively. Over 1995-1999, there was a strong trend of increase in fishing effort and decrease of catch-per-unit-effort in the waters of Pursat, Siem Riep and Kampong Chnnang provinces. These provinces have large population centres located close to the fishing grounds; fishing in these areas should be more strictly regulated. (C) 2009 Published by Elsevier Inc.
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