机构地区: 滨州职业学院
出 处: 《海洋湖沼通报》 2010年第2期72-78,共7页
摘 要: 研究了黄海野生石鲽繁殖生物学特性,结果表明:石鲽性成熟系数(GSI)和肝重指数(HIS)与繁殖周期呈现密切关系;未成熟的卵巢呈桔红色,接近性成熟卵巢呈桔黄色,成熟期卵巢呈淡黄色,血管和卵粒清晰可见,处于退化期卵巢呈紫红色;依据卵巢组织学和卵母细胞组织形态将石鲽卵巢划分为5个发育期;分析GSI和HSI及其与繁殖期的关系。黄海水域石鲽繁殖期为11月至翌年2月,1年只有1个产卵期。 Gonadosomatic index(GSI) and hepatosomatic index(HSI) appeared a periodicity change according to reproductive cycle of stone flounder.The light yellow ovary or rosiness ovaries were observed in immature individuals and the maturing female fish was pairs of jacinth ovaries.In mature gonad,the red-yellow ovaries and on which distinct blood vessel were observed easily.In pre-ovulation fish,eggs can be observed vaguely in jasmine ovaries,whereas,wine and crimpled were the character of atretic follicles stage.Five categories of oocytes were identified according to histological sections of ovaries in female stone flounder.The relationships among GSI,HSI,and reproductive cycle of stone flounder were analyzed.Stone flounder of China is utilized a synchronous pattern of ovulation according to ovaries development.
领 域: [生物学]