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Fine‐scale genetic structure derived from stocking black sea bream, Acanthopagrus schlegelii (Bleeker, 1854), in Hiroshima Bay, Japan

Fine‐scale genetic structure derived from stocking black sea bream, Acanthopagrus schlegelii... Summary Black sea bream (Acanthopagrus schlegelii) is an important commercial and sport fishing species inhabiting Hiroshima Bay, where an intensive stock enhancement program is carried out for this species. In order to clarify the fine‐scale genetic effects of the releases, black sea bream specimens were collected at five locations (Ninoshima, Atatajima, Miyajima, Oonasamijima and Kurahashi) in Hiroshima Bay. High homogeneity was observed among locations. The sample from Ninoshima, where stocking was most intense, presented the lowest number of alleles per locus (13.5) and showed significant differences in the pairwise FST value compared to the fish at Atatajima, Miyajima and Oonasamijima, but not significantly different from those collected at Kurahashi. However, all differences disappeared once analysis was performed standardizing the age‐classes of all samples. The results suggest an important effect of the releases on genetic diversity of A. schlegelii in Hiroshima Bay. Moreover, the observed genetic population substructure is presumed to be related to the year‐class composition of the samples at each location. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Ichthyology Wiley

Fine‐scale genetic structure derived from stocking black sea bream, Acanthopagrus schlegelii (Bleeker, 1854), in Hiroshima Bay, Japan

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References (22)

Publisher
Wiley
Copyright
© 2009 The Authors. Journal compilation © 2009 Blackwell Verlag, Berlin
ISSN
0175-8659
eISSN
1439-0426
DOI
10.1111/j.1439-0426.2009.01249.x
Publisher site
See Article on Publisher Site

Abstract

Summary Black sea bream (Acanthopagrus schlegelii) is an important commercial and sport fishing species inhabiting Hiroshima Bay, where an intensive stock enhancement program is carried out for this species. In order to clarify the fine‐scale genetic effects of the releases, black sea bream specimens were collected at five locations (Ninoshima, Atatajima, Miyajima, Oonasamijima and Kurahashi) in Hiroshima Bay. High homogeneity was observed among locations. The sample from Ninoshima, where stocking was most intense, presented the lowest number of alleles per locus (13.5) and showed significant differences in the pairwise FST value compared to the fish at Atatajima, Miyajima and Oonasamijima, but not significantly different from those collected at Kurahashi. However, all differences disappeared once analysis was performed standardizing the age‐classes of all samples. The results suggest an important effect of the releases on genetic diversity of A. schlegelii in Hiroshima Bay. Moreover, the observed genetic population substructure is presumed to be related to the year‐class composition of the samples at each location.

Journal

Journal of Applied IchthyologyWiley

Published: Aug 1, 2009

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