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Professor Hiroshi SUZUKI In 1985, I moved to Kagoshima from Amakusa at where I had studied on Marine Ecology as student in doctoral course of Kyushu University. Since 1986, I have taught the biology and ecology of aquatic invertebrates in Faculty of Fisheries, Kagoshima University. And I have mainly studied on the biology of freshwater crustacean decapods, especially their taxonomy and ecology, in Kagoshima area. Kagoshima Prefecture has a lot of islands being a part of the Nansei Islands. These islands are known to have high biodiversity in their fauna and flora. I have, therefore, lots of academic interests in Kagoshima.
As you know the freshwater crustacean decapods are divided into two categories; one of them is called as “true freshwater species” which spends their whole life in freshwater/inland-water, and the other is called as “diadromous species” which spends a part of life in freshwater/inland-water and remain of life in the sea. In Japan, the potamonid crabs and Neocaridina shrimps are known as the former species, and Eriocheir crab, almost all palaemonid prawns and atyid shrimps are known as the later species. It is high possibility that the true freshwater species makes speciation resulting from isolation among local population. During 30 years I have researched in Ohsumi Peninsula, Yaku-shima Island, Koshiki Islands and Kuro-shima Island, and established four new potamonid crabs; Geothelphusa exigua (photo 1), G. marmorata (photo 2), G. koshikiensis (photo 3), and G. mishima (photo 4). In the recent year I am studying on freshwater crustacean decapod fauna in Amami group; Amami-ohshima and Tokuno-shima Islands. This group is called as “Galapagos in the Orient”, and has high biodiversity. I am now exciting for the works in Amami group.
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