| 摘要: |
|
| 关键词: |
| DOI： |
| 分类号: |
| 基金项目: |
|
| NOTES ON THE BIOLOGY OF TRACHYPENAEUS CURVIROSTRIS STIMPSON FROM BOHAI AND HUANGHAI SEAS |
|
|
| Abstract: |
| Trachypenaeus curvirostris is one of the most valued marine crustacean in China. The shrimp is benthonic, hiding itself in the sand at daytime and coming out for food in the night. It lives in the estuary and the inshore waters in its breeding season. Feeding intensity is highest in summer, lowest in winter, with Gastropoda, Maeruca and polychaeta as its main diet. The ratio of the length to the weight of its body is a positive one, r = 0.9947, while that of the length to the increase rate of body weight is negative, r=-0.9039. Maturity of gonad of male shrimp occurs in May-June, that of the female occurs from middle of June to middle of September, with a high breeding season in July-August. The shrimp migrates to Bohai Bay to breed at the first part of June, when the bottom water temperature there is 7-10.5℃. At the end of November, it starts migrating to the overwintering ground southeast of Shidao and north of Lianqingshi fishing grounds. The shrimp can attain a length of 13-104 mm for the female, and 23-84 mm for the male. |
| Key words: |
