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http://krishi.icar.gov.in/jspui/handle/123456789/62286
Title: | Vulnerability of catfish to fishing: an investigation based on the landings at Mumbai |
Other Titles: | Not Available |
Authors: | Raje,S G Vivekanandan,E |
ICAR Data Use Licennce: | Not Available |
Author's Affiliated institute: | Not Available |
Published/ Complete Date: | 2008 |
Project Code: | Not Available |
Keywords: | Catfish fishing Mumbai |
Publisher: | CMFRI |
Citation: | Not Available |
Series/Report no.: | Not Available |
Abstract/Description: | The estimated annual average catch and catch rate of catfish by trawlers at New Ferry Wharf, Mumbai decreased from 2,586 t and 2.2 kg/h during 1991-1994 to 1,548 t and 1.0 kg/h during 1995-2004. Tachysurus tenuispinis, T. serratus and T. thalassinus appear to be susceptible to fishing. T. thalassinus grow slowly, attain large size, mature late, get recruited early to the fishery, and a large majority are exploited before attaining first maturity. The sex ratio of five species of catfish was biased toward male when young, but the number of males substantially decreased in larger group, and at lengths closer to L max, males were rarely found. The presence of immature and mature ova in the same ovaries indicated that they are fractional spawners. The number of ripe eggs in the oro-buccal cavity of gestating males was always less than the number of eggs recorded in the ovary of females. Due to gestation behaviour, the males are more vulnerable to fishing. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Article |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Indian Journal of Fisheries |
Volume No.: | 55 |
Page Number: | 227-233 |
Name of the Division/Regional Station: | Not Available |
Source, DOI or any other URL: | http://eprints.cmfri.org.in/109/1/IJF55(3);Rajee,SG.pdf |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/62286 |
Appears in Collections: | FS-CMFRI-Publication |
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