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Reproductive biology and diet of the grey sharpnose shark Rhizoprionodon oligolinx Springer, 1964 (Chondrichthyes: Carcharhinidae) from the north-eastern Arabian Sea

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Relation http://eprints.cmfri.org.in/12456/
 
Title Reproductive biology and diet of the grey sharpnose shark
Rhizoprionodon oligolinx Springer, 1964 (Chondrichthyes: Carcharhinidae) from the north-eastern Arabian Sea
 
Creator Purushottama, G B
Thakurdas,
Ramasubramanian, V
Dash, Gyanaranjan
Akhilesh, K V
Ramkumar, S
Kizhakudan, Shoba Joe
Singh, V V
Zacharia, P U
 
Subject Shark fisheries
Fishery Biology
 
Description Information on reproductive biology is presented for the grey sharpnose shark Rhizoprionodon oligolinx Springer, 1964 (Chondrichthyes: Carcharhiniformes), collected off the north-west coast of India in the Arabian Sea. A total of 711 individuals, of 27.0 to 93.0 cm total length (TL), 180 to 2600 g total weight (TW) were used for the study. The length-weight relationships were significantly different between the sexes. The size-at-maturity (Lm50) for females and males was estimated to be 62.3 and 59.5 cm TL respectively. Number of embryos ranged from 1 to 7 and the size at birth was estimated between 25 to 30 cm TL. Overall sex ratio favoured the females slightly at the rate of 1.27:1. There was significant positive correlation between maternal TL and number of embryos (p
 
Date 2017
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/12456/1/IJF_64.4_G%20B%20Purushottama_Reproductive%20biology%20and%20diet%20of%20grey%20sharpnose%20shark.pdf
Purushottama, G B and Thakurdas, and Ramasubramanian, V and Dash, Gyanaranjan and Akhilesh, K V and Ramkumar, S and Kizhakudan, Shoba Joe and Singh, V V and Zacharia, P U (2017) Reproductive biology and diet of the grey sharpnose shark Rhizoprionodon oligolinx Springer, 1964 (Chondrichthyes: Carcharhinidae) from the north-eastern Arabian Sea. Indian Journal of Fisheries, 64 (4). pp. 9-20.