ショウグンエビEnoplometopus occidentalis RANDALL(十脚目,アナエビ科)の幼生について

概要

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The genus Enoplometopus was placed in the Nephropidae of Infraorder Astacidea. Based on the morphological characters, it is classified in the Axiidae of Infraorder Anomura (HOLTHUIS 1946, 74, 83). Little have been known about the larvae of this genus. Obserations on the larvae of E. occidentalis are reported here. Larvae were cultured for 55 days until 8th zoeal stage. The larvae bear large 1st pereiopod from 1st zoea, and they use the chelae for feeding. Other larval characters were similar to those of the Axiidae: long rostrum,shape of endopod of 1st maxilipeds, pereiopods 4th and 5th have delayed development, and post marginal setae on the tail. These characters indicate that E. occidentalis may belonging to the Axiidae. The 8th zoeal stage closely resembles the larva described for Enoplometopus sp. by GURNEY(1938). The larva of Nephrops sp. described in that report is also similar to the 2nd zoeal stage of E. occidentalis. It is proposed that these two larvae described by Gurney belong to Enoplometopus.
日本甲殻類学会の論文
1991-12-31