Gametogenic cycle of Mesodesma donacium in Longotoma, Chile, June 1994 to Jul...

Gonad stage: Number of male or female clams in each of the following gonad stages: early mature; advanced maturity; mature; early regresion; final regresion. Classification was...性腺发育期（gonad stage）：统计各性腺发育期的雄性与雌性蛤蜊的个体数量，涵盖以下发育期：早期成熟、成熟后期、完全成熟、早期退化、终末退化。该分类方法为……