琉球列島に固有なオキナワヤマタカマイマイ類の地理的分布と生息環境

概要

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The geographical distribution and habitat characteristics of 11 arboreal land snails, subgenus Luchuhadra, including four vulnerable species, was investigated on the Amami, Okinawa and Miyako Islands. Most of the species except for Satsuma omoro (due to lack of sufficient observation) occurred more abundantly on Ficus virgata in natural woodlands. However, the vulnerable species, S.hemihelvus, was found not only within the woodland, but also in a public garden woodland maintained artificially. S.hemihelvus was mainly found on the underside of leaves, while S.sororcula was on the trunk of the tree. S.sooi, S.erabuensis, S.amanoi, S.iheyaensis, and S.hemihelvus showed limited geographical distributions, with less abundance, except for S.hemihelvus, which numbered more than 200 individuals at any observation site. On the other hand, S.largillierti and S.sororcula had many populations with high abundance.
野生生物保護学会の論文
2001-07-31