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对白斑狗鱼Esoxlucius和黑斑狗鱼Esoxreichrti的个体繁殖力进行了比较,并对两种狗鱼的个体繁殖力与其各主要体征指标的关系进行分析。结果表明:白斑狗鱼绝对繁殖力(F)为3 808～173 500粒/尾,黑斑狗鱼的F为5 380～184 630粒/尾,两种狗鱼的个体相对繁殖力(FW)差异极显著(P<0.01),F和相对繁殖力(FL)差异不显著。F、FW和FL与各主要体征指标呈正态分布,白斑狗鱼F、FW和FL与各主要体征指标关系密切;黑斑狗鱼F与各主要体征指标关系密切,FW和FL与各体征指标的关系均不密切。白斑狗鱼的F、FL、FW与各体征指标的多元逐步回归方程分别为F=-50090.38+421.661Wo-74.083Wn+205.845L,FL=6.977+0.271Wo,FW=-5.88+0.37L+0.514M;黑斑狗鱼F、FL、FW与各体征指标的多元逐步回归方程分别为F=-19300.721+33.262Wn+728.415M,FL=-20.948+0.129Wn+2.056M-0.071W,FW=15.743+0.661M。根据两种狗鱼的卵径频率分布图判断,白斑狗和黑斑狗鱼都为一次性产卵鱼类。
The individual fertility of Esoxlucius and Esoxreichrti were compared and the relationship between their individual fertility and their major indices was analyzed. The results showed that the absolute fecundity (F) of white pike was 3 808 ~ 173 500 grains / tail while the F was 5 380 ~ 184 630 grains / tail of the grouper, while the relative fecundity (FW) The difference was significant (P <0.01), F and relative fecundity (FL) difference was not significant. F, FW and FL showed a normal distribution with the main vital signs. The scores of F, FW and FL in the Porphyranto fish were closely related to the major vital signs. The relationship between the indicators are not close. The multivariate stepwise regression equations of F, FL, FW and each sign of Pokilets were F = -50090.38 + 421.661Wo-74.083Wn + 205.845L, FL = 6.977 + 0.271Wo, FW = -5.88 + 0.37L + 0.514 M. The multiple stepwise regression equations of F, FL, FW and each sign index of FISH were F = -19300.721 + 33.262Wn + 728.415M, FL = -20.948 + 0.129Wn + 2.056M-0.071W, FW = 15.743 + 0.661M. Judging from the frequency distribution of egg diameter of two kinds of dogfish, the lupus and spotty fish are all spawning fish.