| 摘要: |
| 采用常规生物学方法和统计回归分析方法, 对浙江近海曼氏无针乌贼的繁殖生物学特性进行了研究, 比较了不同时期浙江近海曼氏无针乌贼卵巢成熟系数(GSI)、生物学体型及个体生殖力与生物学指标关系。结果表明, 浙江近海曼氏无针乌贼GSI在4月份达到最高(9.51%±7.23%), 相比20世纪60年代初、80年代初, 自然海域曼氏无针乌贼的性腺发育提前, 且生殖期延长。20世纪80年代初曼氏无针乌贼的生物学体型、怀卵量及个体生殖力均大于60年代初和自然海域曼氏无针乌贼, 同时曼氏无针乌贼在人工养殖条件下生物学体型、怀卵量及个体生殖力增大。浙江近海曼氏无针乌贼的个体生殖力均随着胴长(ML)、体质量(W)、卵巢质量(WO)、GSI这些指标的增大而增大, 除体质量相对生殖力(FW)与ML为密切正相关外, 个体生殖力与这些指标的关系均达到了极显著水平(P<0.01)。多元线性逐步回归分析表明, WO是影响浙江近海曼氏无针乌贼个体生殖力的最重要指标。 |
| 关键词: 曼氏无针乌贼, 性腺成熟系数, 个体生殖力, 繁殖生物学, 变化 |
| DOI：10.11693/hyhz201204001001 |
| 分类号: |
| 基金项目:国家国际科技合作项目, 2009DFB20290号; 国家科技支撑计划, 2011BAD13B08号; 国家自然科学基金项目, C190702号 |
附件 |
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| STUDY ON CHANGES IN REPRODUCTIVE BIOLOGY CHARACTERISTICS OF SEPIELLA MAINDRONI(ROCHEBRUNE) OFFSHORE ZHEJIANG |
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WU Chang-Wen, ZHOU Chao, GUO Bao-Ying, ZHANG Jian-She
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Marine Science College of Zhejiang Ocean University, National Engineering Research Center of Marine Facilities Aquaculture
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| Abstract: |
| To understand the reproductive biology characteristics of Sepiella maindronifrom the coastal waters of the East China Sea in Zhejiang Province, compared the variant regularity of the gonadosomatic indices (GSI), biology shape and the relationship between the individual fecundity and the biological character indices of S. maindroni from the coastal waters of the East China Sea in Zhejiang Province in different period, by the conventional biological method and statistics regression analysis. The result showed that the GSI of S. maindroni reached the highest 9.51%±7.23% in April. Compared with S. maindroni in the early 1960s and 1980s, the gonadal development of S. maindroni advanced, and the genital stage of S. maindroni extended. The biology shape, brood amount and individual fecundity of S. maindroni in the early 1980s were greater than that of the early 1960s and now. These indicators of cultured S. maindroni were significantly higher than that of contemporary wild S. maindroni. The individual fecundity of S. maindroni increased as the mantle length (ML), body weight (W), ovary weight (WO) and GSI. There was significant (P<0.01) correlation between individual fecundity and these biological indicators, in addition to body mass relative fecundity (FW). Multiregressive analyses showed that the individual fecundity were significantly correlated with WO. The fecundity were mainly dependent on the size of WO. |
| Key words: Wild Sepiella maindroni, Gonadosomatic index (GSI), Fecundity, Biology shape, Changes |
