摘要
本文研究了曼氏无针乌赋的怀卵量及生殖力。结果表明:1)曼氏无针乌贼的怀卵量为832—7925粒(平均2,366粒);个体绝对生殖力为155—1590粒(平均447粒);个体相对生殖力 r/L 为5—44粒(平均15粒);个体相对生殖力 r/W为4—25粒(平均9粒)。2)怀卵量和个体绝对生殖力与胴长、纯体重及缠卵腺重之间的关系均为直线正相关。相对生殖为 r/L 与胴长呈直线正相关,相对生殖力 r/W 与纯体重呈直线负相关。
This paper deals with the number of eggs and individual difference in fecundity of cuttlefish.The sample fish were collected from the waters 30-45 metre deep 10 to 12 miles south-west of Dong Fu Shan Island on Zhong Jie Shan Fishing area.Two hundred sample fish were dissected. 1.The number of eggs per femal cuttlefish ranges from 832 to 7925.(mean number,2,366)The individual absolute fecundity ranges from 55 to 1590.(mean number,44)The individual relative fecundity,r/L [L=back length,measured in mm.](mean number,15)The individual relative fecundity r/W varies from,4 to 25. (mean number,9) 2.The number of eggs and individual absolute fecundity is a positive linear function of body length,net body weight and nidamental gland.The relative fecundity r/L is directly propotional to body length,while the ratio r/W is inversely prpopotional to net body weight.
