Establish Growth Equations for <i>Oratosquilla</i> <i>oratoria</i> Based on Body Length and Carapace Length in Bohai Bay

为获取渤海湾口虾蛄生长参数信息，以2018年至2021年渤海湾海域科学调查捕获的口虾蛄为对象，基于体长和头胸甲长数据，应用长度频率分析法分性别建立Von Bertalanffy生长方程。结果显示，以体长信息为基础建立的渤海湾口虾蛄生长方程参数渐进体长和平均生长速率分别是18.945 cm和0.417 year−1，基于头胸甲长数据得到的渐进体长和平均生长速率分别是49.814 mm和0.311 year−1。研究表明，渤海湾口虾蛄生长存在性别差异，利用体长数据建立生长模型更可靠，基于头胸甲长数据建立的生长模型存在高估生长的可能，同时，组距的选择对生长方程参数估算结果存在影响。To obtain growth parameters of Oratosquilla oratoria in the Bohai Bay, individuals captured during scientific surveys conducted in the Bohai Bay from 2018 to 2021 were analyzed. Sex-specific Von Bertalanffy Growth Function (VBGF) were established using length-frequency analysis based on body length (BL) and carapace length (CL) data. The results showed that the parameters asymptotic length and K of VBGF for the mantis shrimp based on body length information were 18.945 cm and 0.417 year−1, respectively. The asymptotic length and K obtained based on carapace length data were 49.814 mm and 0.311 year−1, respectively. Research has shown that there are gender differences in the growth of the Bohai Bay mantis shrimp, and using body length data to establish growth models is more reliable. Growth models based on carapace length data may overestimate growth, and the choice of length class interval has an impact on the estimation of parameters in VBGF.