摘要
对在舟山市西轩养殖场采集的养殖曼氏无针乌贼的生物学参数进行分析,探讨养殖曼氏无针乌贼雄性个体的繁殖模式。用生物统计和模型拟合等方法对雄性个体的有效繁殖力及其与生物学指标的关系进行研究,结果表明:养殖曼氏无针乌贼雄性个体的胴背长、体质量分布范围分别为32~102 mm、5.3~128.7 g;精巢成熟系数、精荚复合体指数分布范围分别为1.87%~3.64%、1.09%~4.00%,且二者均在Ⅲ-Ⅵ随性腺发育逐步增大;个体精荚囊长度为25~55 mm,精荚囊质量为0.30~1.54 g,两者成线性关系,均在性腺成熟度Ⅵ期时达到最大;有效繁殖力为125~3824条,胴背长相对有效繁殖力为1.71~56.24条·mm^(-1),均随着个体的生长发育逐渐增加并在Ⅵ期时达到最大。精荚长度为1.74~12.87 mm,精荚质量为0.0001~0.0026 g,两者符合线性函数关系。
The biological indicators of cultured Sepiella maindroni collected in Xixuan island farm in Zhoushan city were analyzed to explore the reproductive mode of the male cultured ones.The effective fecundity of male individuals and its variations with biological indicators were assessed using model fitting analysis.The specimens were measured 32-102 mm in mantle length and weighted from 5.3-128.7 g.The Gonadosomatic index ranging from 1.87%to 3.64%and Spermatophoric complex index ranging from 0.32%to 4.00%,respectively,and both increased gradually with gonad development.The length and weight of spermatophoric sac increased with sexual maturation measured 25-55 mm in length and 0.30-1.54 g in weight,respectively.The spermatophoric sac's weight showed a linear regression on its length,andbothof them reached to the highest value at the stageⅥ.The effective fecundity was estimated from 41 to 3824 spermatophores and the relative effective fecundity by mantle length was estimated from 0.52 to 56.24 spermatophores per millimeter,which increased gradually with the growth and development of individuals and reached the maximum at stageⅥ.The spermatophores are measured from 1.74 to 12.87 mm in length and from 0.0001 to 0.0026 g in weight,respectively.
作者
王孟佳
徐开达
胡桂森
朱凯
WANG Mengjia;XU Kaida;HU Guisen(Marine and Fishery Institute of Zhejiang Ocean University,Zhoushan 316021;Zhejiang Marine Fisheries Research Institute,Zhoushan 316021;Shengsi County Marine and Fishery Bureau,Zhoushan 202450,China)
出处
《浙江海洋大学学报（自然科学版）》
CAS
2024年第1期33-40,共8页
Journal of Zhejiang Ocean University：Natural Science
基金
国家重点研发计划(2019YFD0901204)
浙江省自然科学基金(LGN21C190005)
舟山市科技计划项目(2021C31013)。
关键词
养殖
曼氏无针乌贼
有效繁殖力
繁殖发育
cultured
Sepiella maindroni
effective fecundity
reproduction
