日本近海産動吻動物とその和名について

概要

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Kinorhyncha is one of the meiobenthic invertebrate phyla, with species generally less than 1mm in body length. This paper provides a brief review of the morphology, habitats, distribution, systematics, reproduction and development, plus current and past studies of this phylum. About 150 valid species are known world-wide, all of which are free-living and inhabit marine or estuarine environments. Phylogenetically, they are closely related to the Loricifera and Priapulida. Their bodies are bilaterally symmetrical and consist of 13 segments armed with spines. The first segment is a spherical head, the second segment is a neck, and the next series of 11 segments form a trunk. By everting and withdrawing the head, the animals move through the sediment and feed. Kinorhyncha are a food source for shrimp and other macrobenthos. Taxonomy of the Kinorhyncha still requires considerable work, with undescribed species being discovered from the oceans world-wide. Along Japanese coasts, seven species belonging to five genera have been reported. New standard Japanese names are proposed for the seven species of marine Kinorhyncha found in Japanese waters.
日本動物分類学会の論文
2005-08-20