Record Details

Fishery and bionomics of the little tuna, Euthynnus affinis (Cantor, 1849) exploited from Indian waters

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Fishery and bionomics of the little tuna, Euthynnus affinis
(Cantor, 1849) exploited from Indian waters
Not Available
 
Creator Margaret Muthu Rathinam,A
Ghosh,Shubhadeep
Sivadas,M
Koya,K P Said
Joshi,K K
Abdussamad,E M
Chellappan,Anulekshmi
Rohit,Prathibha
Kemparaju,S
Dhokia,H K
Prakasan,D
Beni,N
 
Subject Bionomics
Exploitation
Euthynnus affinis
Fishery
Kawakawa
Indian seas
 
Description Not Available
Euthynnus affinis, with an average annual landing of 40,757 t during 2006-2010 formed the bulk (65.1%) of the total coastal
tuna catch of the country. The fishery, biology, growth and stock structure of E. affinis was studied in detail. Hooks and
lines, gillnets and purseseines were the major gears exploiting the fish. Fishery was sustained mainly by 1 - 2 year old fishes
(34 to 50 cm). Size at first maturity was estimated at 37.7 cm and fecundity was 3,08,150 eggs. Spawning was observed
round the year with peaks during July-August and November-January. E. affinis was found to be a nonselective generalist
feeder foraging on fishes, crustaceans and molluscs. The length–weight is given by the relationship 0.0254 L2.889 with no
significant difference between males and females. Age and growth were estimated using length based methods. The
von Bertalanffy growth parameters estimated were L∞ = 81.92 cm, annual K= 0.56 and t0 = -0.0317. Mortality estimates were
M= 0.93 and Z = 1.68 and F= 0.75 with the exploitation rate E=0.45. The maximum sustainable yield estimated was higher
than the average annual catch indicating scope for further exploitation.
Not Available
 
Date 2021-09-16T06:44:20Z
2021-09-16T06:44:20Z
2012
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/62934
 
Language English
 
Relation Not Available