Genetic diversity of red sea bream Pagrus major in western Japan in relation to stock enhancement

被引:29
作者
Perez-Enriquez, R
Takemura, M
Tabata, K
Taniguchi, N [1 ]
机构
[1] Tohoku Univ, Grad Sch Agr Sci, Sendai, Miyagi 9818555, Japan
[2] CIBNOR, Lab Aquaculture Genet, La Paz 23040, Baja California, Mexico
[3] Kochi Univ, Fac Agr, Nankoku, Kochi 7838502, Japan
关键词
genetic diversity; microsatellites; Pagrus major; red sea bream; stock enhancement;
D O I
10.1046/j.1444-2906.2001.00201.x
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Stock enhancement is used in Japan as a tool to help the replenishment of wild populations of red sea bream Pagrus major. in this study, we analyzed the genetic diversity and composition of wild red sea bream at seven locations around Shikoku Island, South-west Japan, using three microsatellite loci. This analysis was done to test the hypothesis that: (i) red sea bream comprises a single Mendelian population along Japan; and (ii) stock enhancement programs around Shikoku Island are causing genetic differentiation among wild stocks. The results indicated that some locations from the Shikoku area were not significantly different from the rest of Japan, supporting the hypothesis of a single Mendelian population. Significant departures from Hardy-Weinberg equilibrium and significant pairwise F-ST among locations indicated genetic instability within this region. We suggest that the stock enhancement programs made in the region are the possible cause of this genetic instability. A management scheme for the hatcheries involved in the stock enhancement of red sea bream is presented.
引用
收藏
页码:71 / 78
页数:8
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