アゴトゲヨコエビの胚発生と交尾前行動

概要

論文の詳細を見る
Embryonic development, precopulatory behavior and precopula duration of Jesogammarus spinopalpus were observed under laboratory and field conditions. Five stages were recognized during the process of embryonic development until hatching; Stage 1 : total and surface cleavages occur, Stage 2 : ectoderm appears, Stage 3 : a ventral cleft and appendage rudiments appear, Stage 4 : segmentation proceeds, and Stage 5 : eye pigmentation and the heart beating occur. The duration of each stage was measured at 6℃. The mean intermoult period and precopula duration were 28. 1 days and 6.1 days at 6℃, and 43.4 days and 8.9 days at 10℃, respectively. Thus the relative precopula duration (RPD), the ratio of precopula duration to the intermoult period, was O.22 and 0.21 at respective temperatures in the laboratory, where most males caught females carrying the embryos at Stage 5 to guard for subsequent copulation. In the field population, males preferred to females approaching to subsequent oviposition, with the RPD nearly equal to that in the laboratory.
国立科学博物館の論文
1991-03-25