摘要
本文对短吻舌鳎的个体生殖力和成熟的雌雄个体的性状进行了研究。结果表明,个体相对生殖力r/L与各体组指标都有一定关系,而个体相对生殖力r/W与这些指标无关,并且得到了个体绝对生殖力和各体组指标的最优回归方程。尽管在不同年龄组中,个体绝对生殖力不同,但如果消除体重对个体生殖力的影响;则个体绝对生殖力r在各年龄组中没有差异。与雌性短吻舌鳎比较,雄性是显著小型的。
This study is Based on biometric data obtained during the period from Apri 1985 to June 1986, The results are summarised as follows: 1. The individual relative fecundity r/L (r=egg number, L=body length)is linearly and directly correlative to body weight and somatic weight. The relationship between r/L and body length, body width and body height can be expressed in exponential functions, while the individual relative fecundity r/W (r=egg number, W=body weight) has no apparent relationship with these body character indexes.2. The individual absolute fecundity r is bound up with body weight,body length and the diameter of eggs. The optimum multiple regression equ-ation is an exponential one.r=e^20.6782x_1^-1.5395x_2~3.474x_3^-1.1312x_4~0.5324x_5~5.3316x_6^-2.8623 x_1=body length x_2=head length x_3=diameter of eggs x_4=body width x_5=body weight x_6=somatic weight 3. Both the individual relative fecundity r/L and the individual absolute fecundity r vary with age. But if eliminating the effect of body weight on fecundity, the value of individual absolute fecundity shows no significant difference in various age groups. The individual relative fecundity r/W is independent of age.4. Compared with the matured female, the matured male is much smaller,more slender and compressed with less mature-coefficient, condition-coefficient and liver-coefficient.
