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2009、2010和2013年在云南省西双版纳自治州勐腊县境内的南腊河共收集大鳞裂峡鲃(Hampala macrolepidota)样本438尾。研究结果表明:大鳞裂峡鲃雌性群体初次性成熟体长228 mm、体重270.3 g,雄性群体初次性成熟体长205 mm、体重172.5 g,对应年龄均为4龄。大鳞裂峡鲃雌、雄繁殖群体的成熟系数年度变化趋势基本一致。成熟系数值在1月、3月、4月呈逐渐增大趋势,5月显著上升,6月达到最高峰,7月急速下降,8月至9月趋于平缓。繁殖活动每年4月开始,一直可持续至10月,主要集中在5~6月。大鳞裂峡鲃雌雄性比为1︰1.19,与鲃亚科其他部分鱼类雌性数量多于雄性的情况相反;繁殖盛期则雌性数量多于雄性。繁殖群体由4~8龄共5个年龄组组成,雌、雄群体均以5龄组所占比例最大。大鳞裂峡鲃属单次产卵鱼类。平均卵径1.18 mm;绝对繁殖力为63 393粒,相对繁殖力为70.04粒/g。与鲃亚科其他部分鱼类比较,大鳞裂峡鲃的卵径相对较小而繁殖力较大。
A total of 438 samples of Hampala macrolepidota were collected from Nanlahe River in Mengla County, Xishuangbanna Prefecture, Yunnan Province in 2009, 2010 and 2013 respectively. The results showed that the first sexual maturity of the female population was 228 mm in length and 270.3 g in body weight. The male sexual population was 205 mm in body length and 172.5 g in body weight, all of which were 4 years old. The annual variation trend of maturity coefficient of female and male breeding population of Scylla serrata is basically the same. The values of maturity coefficient increased gradually in January, March and April, increased significantly in May, reached its peak in June, rapidly declined in July and tended to be gentle from August to September. Breeding activities start in April each year, has been sustainable until October, mainly concentrated in May to June. The ratio of male to female in Scylla serrata is 1: 1.19, which is opposite to that of males in other part of the subfamily Subfamily. In fecundity, the number of females is more than that in males. The breeding population consists of 5 age groups of 4 to 8 years old, with the largest proportion of female and male in the 5-year-old group. Large scales Crassulaceae is a single spawning fish. The average egg diameter was 1.18 mm. The absolute fecundity was 63 393 and the relative fecundity was 70.04 seeds / g. Compared with other parts of the subfamily 鱼 subfamily, Scleractophytica 鲃 relatively small egg size and fertility.