【摘要】 根据性腺外部特征和显微观察结果,将砂海螂(Mya arenaria)的性腺发育过程分为增殖期、生长期、成熟期、排放期和休止期5个阶段。芝罘湾砂海螂满1年性成熟,1年1个生殖周期,每年有2个繁殖高峰期,分别在5月上旬到6月上旬和8月下旬到10月上旬。更多还原

【Abstract】 According to the outward appearance of the sex gonad and the cytological characteristics of the developing germ cells, the annual cycle of maturation of the clam Mya arenaria can be divided into the following five stages: proliferating stage, growing stage, maturing stage, spawning stage and resting stage. The sex gonad mature in one year. There is one reproductive cycle every year. There are two reproductive peaks in the first ten days of May to the first ten days of June and the third ten days of August to the first ten days of October.更多还原