Adaptive radiation and phylogeny of the mudskippers

对日本、马来西亚和马来西亚等地采集的弹涂鱼(Gobiidae：Oxudercinae)的适应性辐射和系统发育进行了研究。等电聚焦电泳法和等位酶电泳法分析表明，斑点弹涂鱼与其他属和种的差异最大，但三种弹涂鱼、三种眼周鱼类和眼周鱼类的亲缘关系较近。在所分析的10种鱼类中，冲绳采集的组织角鱼与印度尼西亚和马来西亚采集的同一物种标本的遗传距离较大。核型分析表明，3种眼点弹涂鱼具有全部46条染色体(2n)，但核型不同，眼周至少有两种2n染色体。对眼周鱼洞穴的野外调查表明，洞穴中的海水几乎不含氧气，但洞穴中的气体与空气中的气体相同。这些气体很可能是由捕泥鱼自己带入洞穴的。

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.