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Biology and population dynamics of the grey dogshark, Rhizoprionodon (Rhizoprionodon) acutus (Ruppell), In Madras waters

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Relation http://eprints.cmfri.org.in/396/
 
Title Biology and population dynamics of the grey dogshark,
Rhizoprionodon (Rhizoprionodon) acutus (Ruppell),
In Madras waters
 
Creator Krishnamoorthi, B
Jagadis, I
 
Subject Population Dynamics
 
Description The morphometric ratios of 13 characters of a sample of 105 specimens
ranging in size from 144 mm to 826 mm established the identity of the species,
Rhizopiionodon (Rhizoprionodon) acutus (Ruppell), supporting the shark fisheries at
Madras. The Bertalanffy's growth parameters were: 1 !« = 1.78 yrs; K =" 0.2; and
L„ 100 cm. R. (R.) acutus attains sizes of 417.3, 522.9, 609.4, 680.2, 738.2,
785.6, 824.5, 856.3, 882.3 and 903.7 mm respectively at ages of 1 to 10 years.
The regression equations of length on weight between females and males were not
significantly different. Although the overall sex ratio was 1 : 1.34, females were
predominant up to the size group of 60-70 cm and during the months of February,
March and April
 
Publisher CMFRI/ICAR
 
Date 1986
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/396/1/Article_03.pdf
Krishnamoorthi, B and Jagadis, I (1986) Biology and population dynamics of the grey dogshark, Rhizoprionodon (Rhizoprionodon) acutus (Ruppell), In Madras waters. Indian Journal of Fisheries, 33 (4). pp. 371-385.