文献类型： 外文期刊

第一作者： Akter, M.

作者： Akter, M.;Sharifuzzaman, S. M.;Akter, M.;Shan, X.;Rashed-Un-Nabi, Md

作者机构：

关键词： goatfish; Upeneus sulphureus; reproduction; Bay of Bengal; FISAT

期刊名称：JOURNAL OF ICHTHYOLOGY （ 影响因子：0.603； ）

ISSN： 0032-9452

年卷期： 2020 年 60 卷 3 期

页码：

收录情况： SCI

摘要： Information on stock condition and reproductive biology are important for fisheries conservation and management planning. This study examined reproduction, growth, mortality and yield of sulphur goatfish (Upeneus sulphureusCuvier 1829), which is a low-value food fish abundantly caught as bycatch in artisanal and industrial fishing from the southeast coast of Bangladesh at northern Bay of Bengal. Data were collected monthly obtaining samples from local fish landing center. The gonadosomatic index indicated thatU. sulphureusspawns twice a year during January-May and August-October. Fecundity of the fish was positively correlated with the body and gonad weight, and varied from 15 128-97 274 eggs with fish weight 11.30-58.73 g. Monthly length-frequency distribution was analyzed through FISAT software, thus the estimated seasonalized von Bertalanffy growth parameters wereL(infinity)= 21.80 cm,K= 0.54 per year,C= 0.5, WP = 0.1 and Rn = 0.300, respectively. Moreover, the value of seasonalized total mortality coefficientZ (2.24) was smaller than that of the non-seasonalizedZ(4.16). The instantaneous natural mortality and fishing mortality, calculated for non-seasonalized total mortality, were 1.31 and 2.86, respectively. Furthermore, the high exploitation rate (E= 0.69) was close to maximum exploitation level (E-max= 0.75) in yield-per-recruit analysis, suggesting thatU. sulphureusis being exploited at the MSY (maximum sustainable yield) level. Therefore, further increase in fishing effort may reduceU. sulphureusstocks in the coastal waters of Bangladesh.

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