圆斑星鲽卵巢发育的组织学和数量形态特征研究

来源 :第一届全国鲆鲽类产业可持续发展研讨会 | 被引量 : 0次 | 上传用户:anweiban
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  研究了圆斑星鲽卵巢年周期发育的组织学规律及其数量形态特征变化。结果表明:圆斑星鲽产卵属一年一次分批产卵类型,卵巢发育属非同步分批成熟类型。性成熟亲鱼在年周期发育中经历5个发育时期,同时可见5个发育时相的卵母细胞,不同发育时期的卵巢中卵母细胞类型和组成比例不同。性腺指数(GSI)、肝脏指数(HSI)和肥满度(CF)在亲鱼的年周期发育中呈现规律性的变化,与卵巢发育呈现密切的关联。亲鱼卵巢发育的有效积温为1050日度。这些结果可为亲鱼促熟培育和人工激素催产时机选择提供充分的技术依据。
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