草海云南鳅的基础生物学研究

摘要

In July 2016 and March 2017, 408 Yunnanilus caohaiensis were collected for the initial research of basic biology in the Caohai National Nature Reserve which maintain a relatively good water quality of Yangguan Mountain. The results showed that the age of the Y. caohaiensis was 0+～5 years old, and the proportion of 0+～2 age was larger, which was the dominant age group. The absolute fecundity of the Y. caohaiensis is 197, and the average fecundity is 142. The relative fecundity is 102 grains each gram and the average relative fecundity is 99 grains each gram. The male and female ratio of Y. caohaiensis is approximately equal to 1:5. In order to protect the diversity of fish species in Caohai, the protection of Y. caohaiensis should be strengthened.%2016年7月和2017年3月, 在草海国家级自然保护区水质保持相对较好的阳关山共采集了408尾草海云南鳅 (Yunnanilus caohaiensis) , 对其基础生物学进行了初步研究.结果表明, 草海云南鳅的年龄组成为0+～5龄, 其中0+～2龄占比较大, 是该种群的优势年龄组.草海云南鳅的绝对繁殖力最大为197粒, 平均绝对繁殖力为142粒;相对繁殖力最大为102粒/g, 平均相对繁殖力为99粒/g.云南鳅的雌雄性比近似等于1:5, 为保护草海鱼类物种多样性, 应加强对草海云南鳅的保护.