【摘 要】
：
Genetic diversity of cultivated populations was investigated using assay of vertical slabpolyacrylamide gel electrophoresis in 4 species of shrimps, which were
【机 构】
：
Fisheries College,School of Ocean-environment
【基金项目】
：
supported by the Grant Foundation of Fujian Province under contract
论文部分内容阅读
Genetic diversity of cultivated populations was investigated using assay of vertical slabpolyacrylamide gel electrophoresis in 4 species of shrimps, which were Penaeus japonicus, Penaeusmonodon, Penaeus vannamei and Metapenaeus ensis. The results showed that the mean number of alle-les per locus (A) is 1.3 ± 0.2, 1.3 ± 0.1, 1.3 ± 0.1 and 1.3 ± 0.1 respectively; the percentage ofpolymorphic loci (P0.95) is 12.5, 6.7, 20 and 23.5 respectivdy; the expected heterozygosity (He) is0.042 ± 0.034, 0.042 ± 0.031, 0.094 ± 0.042 and 0.097 ± 0.047 respectively; and the observed het-erozygosity (Ho) is 0.029 ± 0.024, 0.028 ± 0.023, 0.154 ± 0.082 and 0.150 ± 0.084 respectively.The difference of genetic diversity is obvious in 4 species of shrimps. The degree of genetic diversity isM. Ensis＞ P. Vannamei ＞P .japonicus ＞P. Monodon. In short, the lower level of genetic diversity isestimated in 4 species of shrimps.
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