A NATURAL HYBRID MUD CRAB (DECAPODA, PORTUNIDAE) FROM JAPAN

A NATURAL HYBRID MUD CRAB (DECAPODA, PORTUNIDAE) FROM JAPAN
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DOI：
10.1651/c-2493.1
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发表时间：
2005
期刊：
--
影响因子：
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通讯作者：
H. Imai;M. Takeda
H. Imai;M. Takeda
中科院分区：
其他
文献类型：
--
作者：
H. Imai;M. Takeda

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摘要对一种拟杂交青蟹进行了研究。推测的杂交种在形态上不能轻易地与三种日本青蟹分离，S。serrata，S. paramamosain和S.橄榄类对核DNA第一内转录间隔区（ITS-1）的分析表明，该杂种携带了两个S. serrata和S.橄榄类线粒体DNA的母系遗传16 S rDNA分析表明，该杂种携带S.橄榄科mtDNA。根据这些结果，我们可以得出结论，被检查的动物确实是雌性S. olivacea和雄性S.锯齿状。这些物种之间的遗传隔离的程度，和杂交的可能原因进行了讨论。
Abstract A presumed hybrid mud crab of the genus Scylla was examined. The presumed hybrid could not be easily separated morphologically from the three Japanese Scylla species, S. serrata, S. paramamosain, and S. olivacea. An analysis of the first internal transcribed spacer (ITS-1) of the nuclear DNA revealed that the hybrid carried genomic DNA from both S. serrata and S. olivacea. Analysis of the maternally inherited 16S rDNA of the mitochondrial DNA demonstrated that the presumed hybrid carried S. olivacea mtDNA. Based on these results, we conclude that the examined animal is indeed the hybrid offspring of a female S. olivacea and a male S. serrata. The degree of genetic isolation among these species, and the possible causes of hybridization are discussed.