Journal of National Fisheries University

PISSN : 0370-9361

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Journal of National Fisheries University Volume 57 Issue 1
published_at 2008-10

Feeding habits of the Largemouth Bass Micropterus salmoides in Lake Ono,Yamaguchi Prefecture, Japan

山口県小野湖におけるオオクチバスの食性
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Descriptions
Feeding habits of the largemouth bass Micropterus salmoides in Ono Lake, Yamaguchi Prefecture, Japan were studied based on stomach contents of 571 specimens (144-440mm in standard length) collected from January, 2005 to June, 2007. Important prey items of this fish were Hypomesus nipponensis, Macrobrachium nipponense. Odontobutis obscura, Gnathopogon caerulescens, Squalidus gracilis gracilis and Ischikauia steenackeri. H. nipponensis was the most important prey throughout the year, especially from autumn to spring. The feeding activity declined in winter and for breeding related bass during the spawning period. With growth the frequency of occurrence of I. steenackeri increased, while that of G. caerulescens and S. gracilis gracilis decreased.
Creator Keywords
Micropterus salmoides
Lake Ono
feeding habit
prey