著者

上原 伸一

出版者

The Ichthyological Society of Japan

雑誌

魚類学雑誌 (ISSN:18847374)

巻号頁・発行日

vol.43, no.2, pp.89-99, 1996

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The distributions of five species of freshwater goby, <I>Rhinogobius</I> spp.(<I>Rhinogobius</I> sp.CB, OR, LD, DA and CO, according to recent morphological definitions) and R. <I>fiumineus</I> were surveyed at 264 points in 114 streams and rivers on the coastal area of Ise Bay, Japan. <I>Rhinogobius</I> sp.CB (cross-band type) was found in most of the rivers investigated, with <I>R</I>. sp.OR (orange type) occurring in many rivers on the Atsumi and Chita Peninsulas. The possibility of separate origins for the latter populations was discussed. <I>Rhinogobius</I> sp.LD (large-dark type) was found longer rivers flowing across the plains. <I>Rhinogobius</I> sp.DA (dark type) inhabited only a few rivers on the Shima Peninsula. In those rivers habitat segregation was observed between the former and <I>R. flumineus</I>. <I>Rhinogobius</I> sp.CO (cobalt type) occurred in rivers on the Kii Peninsula.