文章摘要
李有广,陈奋昌.池养鲮鱼性腺周年变化的研究[J].水产学报,1965,2(3):59~68
池养鲮鱼性腺周年变化的研究
STUDIES ON THE GONADAL CHANGES OF PONDCULTURED CIRRHINA MOLITORELLA
  
DOI:
中文关键词: 
英文关键词: 
基金项目:
作者单位
李有广 广东省佛山专区水产研究所 
陈奋昌 水产部南海水产研究所 
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中文摘要:
      鲮鱼(Cirrhina molitorclla)是华南特有的池塘养殖鱼类,广东佛山地区鲮鱼的产量约占淡水鱼的二分之一,在淡水养殖业中占有重要的地位。近年来,随着淡水鱼类人工繁殖技术的进展,鲮鱼的繁殖工作也已开展并获得一定成绩。但关于鲮鱼繁殖生物学上许多基本资料尚未掌握,因此有必要作一次对池养鲮鱼性腺周年变化的研究。充分了解性腺的周年变化,无疑对于人工催情工作是十分重要的。 国内有关淡水养殖鱼类性腺变化的研究.
英文摘要:
      1.The ovary of pond-cultured Cirrhina molitorella at the age of sex maturity undergoes the following charges in the year: From middle vi' September to beginning of February the next year, the nary consists wholly of primary and secondary vocytes, maturity coefficient being minimum during this period. From beginning of FeLruary to txiddle of March, the primary and aerandary nocytes pass into the third phase and take up the major part of the section showing thereby an increase in the maturity coefficient. This pariod is short,cvvering approximately 50 days. Front end of March to middle of July, Oocytrs of phase Ⅳ take up by far the geeater part of the acction area, those of phase Ⅲ seem to exist only at the beginning of phase Ⅳ. This period shows a maximum maturity corffeeient. The best results of induced spawning, are vhtainahie from middle of May to July. from beginning of August to middle of September, the ancytea degenerate with a corresponding drcrcaae in maturity coefficient. 2.The ovary of pond-cultured Cirrhina molitorella spawner, whether or not artificially indnoed remains in phaso Ⅱ during winter. The ovary of pond-cultured Cirrhina molitorella spawners will develop as far as phase Ⅳ and will not attain phase Ⅴ, unless artificially induced. 4. Cirrhina molitorella spawners ovulate only once during the spawning season. 5. The maturity coefficient of pond-cultured Cirrhina molitorella milters is minimum during the period from January to March, when the pectoral fins show no secondary sex character and there are only prim ary and secondary spermatocytes and aperlinatids in the spermary. The maturity enefficient is maximum for a period fxnm May to August, when the apermary is fall of mature spermatnxoa and the pectoral fina show apparent secondary sex character. The m aturity coefficient decreases appreciably after August,when small quantities of spermatncytcs of various stages constitute the major part of the contents of the sperrnary. The secondary sex character on the pectoral fins disappears after patober.
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