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Comparison of Body Height, Body Length, Full Length and Body Weight Growth Curves of the Longfin Batfish, Platax teira

Comparison of Body Height, Body Length, Full Length and Body Weight Growth Curves of the Longfin Batfish, Platax teira

Chen Zeng1,2, Baosuo Liu1,4, Kecheng Zhu1,4, Liang Guo1,2, Huayang Guo1,4, Nan Zhang1,4, Quan Yang1,3, Jing Wen Yang1,4 and Dianchang Zhang1,4*

1Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs; South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, 510300, Guangzhou, Guangdong Province, China
2College of Fisheries, Tianjin Agricultural University, 300392, Tianjin, China
3National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, 201306, Shanghai, China
4Guangdong Provincial Engineer Technology Research Center of Marine Biological Seed Industry, Guangzhou, Guangdong Province, China

*      Corresponding author: zhangdch@scsfri.ac.cn

ABSTRACT

To study the growth and development rules of the longfin batfish Platax teira, three nonlinear models, logistic, Gompertz and Bertalanffy, were used in the study to fit and analyse the body height, body length, full length and body weight growth curves of the fish at the age of 2-8 months. The results showed that the three nonlinear curves could fit the body height, body length, full length and body weight growth curves of the P. teira well, and the fitting degree was above 0.99. Considering various factors of the models, the Gompertz model had the best fitting degree for body height, body length, full length and body weight. Under the optimal model, the monthly age of the inflection point of body height, body length, full length and body weight was 3.72, 7.28, 6.60 and 8.88, respectively; the inflection point body size or weight was 10.81 cm, 17.82 cm and 20.14 cm and 826.70 g, respectively. The results of the experiment preliminarily revealed the growth and development rules and growth characteristics in the early stage, which provide a reference for the feeding management and feeding strategies of P. teira.
 

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Pakistan Journal of Zoology

June

Vol. 53, Iss. 3, Pages 801-1200

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