摘要
通过2013年山东半岛南部中国明对虾放流后的跟踪调查和后续的样品采集,收集不同生长发育阶段的中国明对虾,对其进行生物学测定和生长特性分析.研究结果表明:(1)山东半岛南部中国明对虾体长与体质量成幂指数关系,在体长相同的水平上,大规格苗种的体质量要大于小规格苗种.(2)8月中旬以前,大、小规格苗种存在明显的体长差异,8月下旬以后,小规格苗种体长可与大规格苗种趋近,但体质量并未与大规格苗种趋近,明显要小于大规格苗种.(3)小规格苗种理论生长年龄,明显大于大规格苗种理论生长年龄,表明小规格苗种入海后存在一个较长的生长适应期,对环境变化的适应性明显要差于大规格苗种.(4)小规格苗种体质量最快生长期较大规格苗种推迟16 d左右,适当延后开捕日期,可明显提高小规格苗种的产量.
Three follow-up surveys on Fenneropenaeus chinensi are conducted after releasing in natural waters along Southern Shandong Peninsula in 2013. Samples at different growing stages are collected for biological measuring and growth characteristics analysis. The results show that ： （ 1 ） There exists an exponential relationship between body length and body weight of F. chinensi, with larger releasing size is heavier than that with smaller releasing size. （2） There are significant differences in body length between F. chinensi with different releasing sizes before mid- August, while, these differences decreases in late August and thereafter. However, the body weight of F. chinensi with larger releasing size remains much heavier than that with smaller size releasing across the whole time frame. （3） The theoretical growth age of the smaller F. chinensi is significantly older than that of the larger ones. This in- dicates that there is a longer growth adaption period for the smaller F. chinensi after releasing. The adaptability of F. chinensi with smaller releasing size to the environment is weaker than that of the larger ones. （4） The rapid growth period of body weight for smaller releasing F. chinensi is about 16 days later than that of the larger ones. Therefore, postponing the fishing date appropriately will significatly improve the yield of smaller F. chinensi signifi- cantly.
出处
《烟台大学学报（自然科学与工程版）》
CAS
2015年第3期193-198,共6页
Journal of Yantai University(Natural Science and Engineering Edition)
基金
国家国际科技合作专项项目(2013DFA31410)
关键词
山东半岛南部
中国明对虾
苗种规格
生长特性
Southern Shandong Peninsula
Fenneropenaeus chirtensi
releasing size
growth characteristic
