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Population parameters of the catfishes, <i>Arius caelatus </i>(Valenciennes, 1830) and <i>Arius tenuispinis </i>(Day, 1877) from Mumbai waters

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Title Population parameters of the catfishes, Arius caelatus (Valenciennes, 1830) and Arius tenuispinis (Day, 1877) from Mumbai waters
 
Creator Sawant, Bhawesh T.
Chakraborty, S K
Jaiswar, A K
Panda, Debabrata
Bhagabati, S K
Sawant, Paramita B.
 
Subject Catfish
Species
Mortality
Landings
Capture
 
Description 775-780
The population parameters like growth,
mortality, exploitation rate and length at first capture of Arius caelatus and
A. tenuispinis from Mumbai waters were investigated to derive
information required for their management. Asymptotic length (L∞) and growth coefficient (K) were calculated as 520 mm and 0.70
year-1 for A. caelatus and 550 mm and 0.73 year-1 for A.
tenuispinis, respectively.
Instantaneous rate of total, natural and fishing mortalities were
estimated to be 2.37, 1.18 and 1.19 for A. caelatus and 2.42, 1.19 and
1.23 for A. tenuispinis,
respectively. Size at first capture was estimated as 274 mm for A.
caelatus and 268 mm for A. tenuispinis. Exploitation ratio (E) was
found to be at optimum level for both A. caelatus (0.5) and A.
tenuispinis (0.51), indicating the stocks are exploited at optimum level and
can be fished sustainably in years to come.
 
Date 2013-12-13T12:34:19Z
2013-12-13T12:34:19Z
2013-10
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/24800
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.42(6) [October 2013]