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采用组织学和实验生态学方法对浙江引种养殖的硬壳蛤的性腺发育、生殖周期、胚胎发育、幼虫和稚贝培育进行了研究。结果表明,浙江养殖的硬壳蛤性腺发育过程以1年为1个周期,可分为增殖期、生长期、成熟期、排放期、休止期5个阶段;繁殖期在4月下旬至6月下旬,水温19.0—28.2℃,可大批产卵二次;肥满度最高为7.11%(6月份),最低为3.68%(1月份);水温20—22℃时,D形幼虫孵出时间约为20h,浮游幼虫经9—10天培育进入变态附着期,10—11天发育变态为稚贝。研究还发现,硬壳蛤的精子在光学显微镜下观察呈牛角形或较直的长三角形,与常见的双壳类软体动物的精子形态明显不同。文中还讨论了性腺发育与积温的关系,指出性腺发育成熟的积温和有效积温大约为1800℃和600℃。
Histology and experimental ecology were used to study gonadal development, reproductive cycle, embryo development, larval and juvenile cultivation of hard-shelled clams in Zhejiang. The results showed that the development of gonadal development of hard-shelled clams in Zhejiang Province was divided into five stages of proliferation, growth, maturity, extinction and rest period in 1-year cycle. The breeding period was from late April to June In late, the water temperature 19.0-28.2 ℃, a large number of spawning two times; maximum fatness was 7.11% (June), a minimum of 3.68% (January); water temperature 20-22 ℃, D larvae hatching time of about For 20h, the larvae planted 9-10 days into the metamorphosis of attachment, developmental abnormalities 10-11 days juvenile. The study also found that the hard shell clam sperm observed under a light microscope horns or straight triangle, with the common bivalve molluscs sperm morphology was significantly different. The article also discussed the relationship between gonadal development and accumulated temperature, pointed out that gonadal maturation accumulated temperature and effective accumulated temperature of about 1800 ℃ and 600 ℃.