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Distribution and abundance in time and space of pelagic stingray <i>Pteroplatytrygon violacea</i> (Bonaparte, 1832)

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Title Distribution and abundance in time and space of pelagic stingray Pteroplatytrygon violacea (Bonaparte, 1832)
 
Creator Sajeevan, M.K.
Sanadi, Rajashree B.
 
Subject Lunar effect on pelagic stingray
Monsoon effect on pelagic stingray
Pelagic stingray distribution
Pelagic stingray abundance
Pelagic stingray of Andaman
Pelagic stingray environment
 
Description 1709-1713
Pelagic stingray, formerly considered as a rare species is becoming a major bycatch of tuna longline fishery. Present study is an attempt to understand the abundance of pelagic stingray in time and space around Andaman & Nicobar Islands. General linear model has been fitted by using exploratory tuna longline survey data collected from A & N Islands. The study provided an account on the abundance and distribution pattern of the species. Present study recorded better catch rates during the new moon period and the results indicated the significant effect of the lunar cycle on the catch rate of pelagic stingray. Almost nil catch rate recorded during monsoon period was quite interesting and results showed that there is a significant effect of the monsoon on the catch rate. An increasing trend of the year wise catch rates indicates the fishing pressure on the co existing oceanic resources.
 
Date 2017-02-21T06:16:34Z
2017-02-21T06:16:34Z
2016-12
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/40543
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.45(12) [December 2016]