Adaptive radiation and phylogeny of the mudskippers

在日本、马来西亚和印度尼西亚对弹涂鱼的适应辐射和系统发育进行了研究。等电聚焦电泳和等位酶电泳结果表明，斑点波卡普顿与其他属、种差异最大，但Boleophthalmus、Periophthalmus、Periophthalmodon三种之间的亲缘关系较为接近，其中冲绳地区采集的Scartelaos histophorus与印度尼西亚、马来西亚采集的同种标本遗传距离较大。核桃学分析表明，3种眼周虫均有46条染色体（2n），但核型不同，眼周虫种中至少存在两种2n染色体数，黄眼周虫可能是衍生种。对圆眼鱼洞穴的实地调查表明，洞穴中的海水几乎不含氧气，但洞穴中的气体与空气相同。这些气体可能是由弹涂鱼自己带进洞穴的。

Adaptive radiation and phylogeny of the mudskippers (Gobiidae : Oxudercinae) were studied in Japan, Malaysia and Inonesia.Isoelectoric focusing electrophoresis and allozyme electrophoresis clarified that Apocryptodon punctatus was most different from other genera and species, but three species of Boleophthalmus, three species of Periophthalmus, Periophthalmodon were comparatively close each other, Among the ten species analyzed, Scartelaos histophorus was collected in Okinawa had rather large genetic distance from the specimes of the same species collected from Indonesia and Malaysia.Karyological analysis clarified that three species of Boleophthalmus had all 46 chromosomes (2n) but karyotypes were different each other, there were at least two types of 2n cromosome number in Periophthalmus species, and Periophthalmus chrysospilos was probably derived species.Field survey on burrows of Periophthalmodon schlosseri clarified that sea water in burrows contained almost no oxygen but gas in the burrows was same as the air. Those gas was probably carried into the burrows by the mudskipper itself.