Title Toward the improvements of broodfish management and egg quality of the Japanese eel, Anguilla japonica, for larviculture - egg collection from young broodfish and effects of broodfish diet on egg fatty acid contents -
Authers Satoshi YAMADA, Katsuhiko HORI and Manabu SEOKA
Keywords eel, broodfish, broodfish diet, egg fatty acid
Citation Bull. Fish. Res. Agen. supplement No. 5, 33-37, 2006
Abstract
It is essential for the progress of the study on the eel larviculture to obtain broodfish and eggs more efficiently. The Japanese eel broodfish are grown up for several years under the misapprehension that larger and older fish produce eggs with high quality. In the present study, we revealed that high quality eggs can be obtained from younger and smaller broodfish. In addition, we showed that egg fatty acid profile, one of nutritional determinants of fish egg quality, can be altered by the manipulation of dietary fatty acids for the young broodfish. The results obtained here may help considerably in improvements for broodfish management and egg quality in the study on the larviculture.
URI http://www.fra.affrc.go.jp/bulletin/bull/bull-b5/10.pdf