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ID 26306
本文ファイル
著者
Gonzalez, Enrique Blanco
キーワード
black sea bream
Acanthopagrus schlegelii
stock enhancement
genetic diversity
pedigree
microsatellite DNA
NDC
水産業
抄録(英)
Black sea bream have been intensively stocked in Hiroshima Bay since 1982. However, no information regarding the long-term effects resulting from the release of large numbers of juveniles on the wild population has been reported. We investigated the fate of black sea bream juveniles released at the sampling site from 2000 to 2001 using six microsatellite DNA markers. In 2003 and 2004 respectively, 12.5 and 13.5% of captured black sea bream were identified as hatchery reared. Variation in total length by age between the released and native stocks was not statistically significant. Low FST values confirmed high genetic similarity between wild and hatchery stocks. Pedigree reconstruction confirmed a small loss of genetic variability, with a final inbreeding rate for recaptured fish of around 3% per year, rising to 4% when both years were combined. There was high survival of released black sea bream juveniles. Some of these specimens reached maturity and may have hybridized with their wild counterparts, highlighting the need to monitor the genetic effects of releasing large number of juveniles.
掲載誌名
Aquaculture
276巻
1-4号
開始ページ
36
終了ページ
43
出版年月日
2008-04
出版者
Elsevier B. V.
ISSN
0044-8486
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2008 Elsevier B. V.
関連情報URL(IsVersionOf)
http://dx.doi.org/10.1016/j.aquaculture.2008.02.004
部局名
生物圏科学研究科