Taxonomic status and genetic diversity of cultured largemouth bass Micropterus salmoides in China
文献类型: 外文期刊
作者: Bai, Junjie 1 ; Lutz-Carrillo, Dijar J. 2 ; Quan, Yingchun 1 ; Liang, Suxian 1 ;
作者机构: 1.Chinese Acad Fishery Sci, Key Lab Trop & Subtrop Fish Breeding & Cultivat, Pearl River Fisheries Res Inst, Guangzhou 510380, Guangdong, Peoples R China
2.Texas Parks & Wildlife Dept, AE Wood Lab, San Marcos, TX 78666 USA
3.Dalian Fisheries Univ, Dalian 116023, Peoples R China
关键词: Gene frequency;Genetic diversity;Gene frequency;Genetic diversity;Heterozygosity;Loss of heterozygosity;Microsatellites;Population genetics;Micropterus salmoides
期刊名称:AQUACULTURE ( 影响因子:4.242; 五年影响因子:4.723 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Genetic variation within and among four cultured populations of largemouth bass in Guangdong, China was evaluated using six microsatellite loci and directly compared to genetic variation in wild populations of largemouth bass in their native range. Numbers of alleles per locus were the same within all four cultured stocks with a mean of 2.17 (SD+/-0.00), but were significantly lower than in wild populations (5.55+/-1.35). Observed heterozygosity exhibited a mean of 0.37 (+/-0.03) among cultured populations, while that in wild populations averaged 0.51 (+/-0.15). All cultured populations exhibited a modal shift in allele frequencies suggestive of a recent reduction in Ne. The dramatic depletion of allelic variation and less dramatic loss of heterozygosity, combined with significant signatures of a recent reduction of Ne within the cultured populations suggest that a genetic bottleneck occurred. All cultured stocks were determined to be derived from the northern subspecies of largemouth bass.
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