慶良間列島で採集されたホソナガシラタマガイ

概要

論文の詳細を見る
Trivia (Trivirostra) hallucinata Liltved, originally recorded from east off South Africa, was collected with dredge from 113 m depth off Kerama Retto, Ryukyu Islands, Southwestern Japan. This is the first re-discovery of this species as well as the first geographical record from Japan. Besides this species, there are many mollusks distributed both in the area off Amami to Okinawa islands and east off South Africa. Such species tend to inhabit on the continental shelf to slope. This fact is also true of other organisms, such as percoid fishes. Ryukyu Islands and eastern South Africa form the northeastern/southwestern ends of Indo-Pacific region respectively. Occurrence of the species common in both areas may be explained by geological history, i.e. change of the Tethy Sea.
日本貝類学会の論文
1999-01-31