Preliminary observation on the stock of Jinga shrimp, Metapenaeus affinis (H. Milne Edwards, 1837) along the Ratnagiri coast of Maharashtra, India
Volume 65 Issue 2
S. J. Dongre, S. Y. Metar, V. H. Nirmale, N. D. Chogale, S. D. Naik and S. S. Gangan
10.6024/jmbai.2023.65.2.2372-14
Abstract
Growth and mortality parameters of Jinga shrimp, Metapenaeus affinis were estimated based on length frequency data collected from March 2018 to February 2019 from the Arabian Sea coast of Ratnagiri, Maharashtra, India. The asymptotic length (L∞) and growth coefficient (K) were estimated to be 180 mm and 1.8 per year, respectively by ELEFAN and t0 0.0055 year by the von Bertalanffy plot. This species attains a size of 65, 106, 133, 150 and 161 mm at the end of three, six, nine, twelve and fifteen months, respectively. Mortality parameters Z, M and F were estimated as 7.2, 3.02 and 4.18 respectively. The length at first capture for M. affinis was 119 mm. The present exploitation ratio and exploitation rate was 0.58. Therefore, the present study suggests reducing the fishing pressure on M. affinis along the Arabian Sea coast of Ratnagiri, Maharashtra, India, for the sustainability of the resource.
