Taxonomy and Life History of the Scale Worm Hesperonoe hwanghaiensis (Polychaeta: Polynoidae), newly Recorded in Japan, with Special Reference to Commensalism to a Burrowing Shrimp, Upogebia major
Taxonomy and Life History of the Scale Worm Hesperonoe hwanghaiensis (Polychaeta: Polynoidae), newly Recorded in Japan, with Special Reference to Commensalism to a Burrowing Shrimp, Upogebia major
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日本新记录的蚧壳虫 Hesperonoe hwanghaiensis（多毛类：Polynoidae）的分类学和生活史，特别是与穴居虾 Upogebia Major 的共生性
DOI：
10.2108/zsj.18.981
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
H. Yamashita
中科院分区：
文献类型：
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作者：
Masanori Sato;Hiro'omi Uchida;G. Itani;H. Yamashita
摘要：一种独特的介壳虫 Hesperonoe hwanghaienssi Uschakov 和 Wu, 1959（多毛类：Polynoidae）是从日本的滩涂中收集到的，在此进行分类学描述，这是自中国标本首次描述该物种以来的第二个记录。我们的标本的一些形态特征与该物种的原始描述略有不同。幼鱼（体宽1.8毫米或以下）和成鱼（体宽1.9毫米或以上）在生长方式、鞘翅形态和微生境方面存在显着差异。我们通过对不同季节的采样，估算出介壳虫的生活史轮廓。鳞虫与穴居虾 Upogebia Major 共生。 5月至9月期间，在九州有明海谏早湾，鳞虫幼虫通常附着在寄主胸部或腹部的腹侧或侧面。 1998年7月，89%的寄主虾被介壳虫侵染。介壳虫幼虫数只（最多7只）常聚集在寄主身上，寄主上未发现成虫。从沉积物样本中收集成虫。这些结果表明，幼虫主要生活在寄主身体的表面，随后它们脱离寄主身体并在寄主洞穴的内表面自由生活。
Abstract A unique scale worm Hesperonoe hwanghaienssi Uschakov and Wu, 1959 (Polychaeta: Polynoidae) was collected from tidal flats in Japan and is described here taxonomically as the second record of this species since its original description from Chinese specimens. Some morphological features of our specimens differed slightly from the original description of this species. Marked differences in growth pattern, morphology of elytra and microhabitat were demonstrated between juveniles (1.8 mm or less in body width) and adults (1.9 mm or more). We estimated the outline of the life history of the scale worm by sampling it in various seasons. The scale worm was commensal with the burrowing shrimp Upogebia major. Juveniles of the scale worm were commonly attached to the ventral or lateral surface of the thorax or abdomen of the host throughout May to September in Isahaya Bay in the Ariake Sea, Kyushu. In July 1998, 89% of the host shrimps were infested by the scale worm. Several juveniles (maximum: 7) of the scale worm often aggregated on a host body, with no adults found on the hosts. The adults were collected from sediment samples. These results suggest that the juveniles mainly live on the surface of the host body and that they later detach themselves from the host body and live freely on the inner surface of the burrow of the host.