琉球列島の陸水エビ類の分布と種分化について-1-
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概要
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This paper deals with the geographical, ecological distributions and some discussions on the speciation of the inland water shrimps and prawns from the Ryukyu Islands. The tropical and subtropical species are dominant in the Ryukyus, occurring about 68% of the whole species, and the rest are occupied by the endemic species (18%) and the northern one (14%). They live in almost inland waters such as river, pond and swamp, peddyfield, spring, cave and subterranean waters. In their vertical distribution in the river, the true freshwater species with a few eggs of large size and non-pelagic larvae are found in the upper stream, whereas the amphidromous species with small and many eggs tend to live mainly in the middle and down streams. With their egg size, larval stage, and larval life, whether they require some salty waters to metamorphose or not, the inland water species can be devided into the following types:(*以下長文のため省略)
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