A study on Length-weight relationship and reproduction of Longnose Trevally (Carangoides chrysophrys(Cuvier, 1833)) in the waters of Hormozgan

Document Type : Biology(Animal)

Authors

1 Agricultural Research and Development Research Institute, National Iranian Fisheries Research Institute, Persian Gulf Ecology Research Institute, Bandar Abbas, POBox: 1597-79145

2 Agricultural Research and Training Organization, National Iranian Fisheries Research Institute, Tehran, POBox: 149-14965

Abstract

The relationship of Length-weight and reproductive of the Longnose Trevally  (Carangoides chrysophrys) were studied from March 2014 to February 2015. Monthly samples at 14 stations were collected using trawl fishing. In this study, the total number of samples was 376, which 194 were females and 137 males and 45 immature. The  minimum and maximum total length during different months were between 25.5 and 80 cm respectively. Weight-length relationship for Longnose Trevally  was W = 0/0064TL 2/9004. This fish had an isometric growth. LM50 for Longnose Trevally  was 46  cm. Sex ratio(female : male) for Longnose Trevally was  1/42:1. The maximum absolute fecundity and relative fecundity was achieved   479992 Ovule in April and   385 in July Ovule per gram of body weight respectively. The minimum absolute fecundity and relative fecundity was achieved   98247 Ovule in November and   125 in July Ovule per gram of body weight respectively. GSI female monthly average was calculated . This fish  has a long spawning season from January to May and spawning  peak was observed in May.

Keywords

References

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Journal of Animal Environment
Volume 10, Issue 1
April 2018
Pages 153-160

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