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Preliminary observation on the sustainability of white sardine, Escualosa thoracata (Valenciennes, 1847), exploited from the central west coast of India

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Relation http://eprints.cmfri.org.in/15128/
https://basicandappliedzoology.springeropen.com/articles/10.1186/s41936-021-00219-w
https://doi.org/10.1186/s41936-021-00219-w
 
Title Preliminary observation on the
sustainability of white sardine, Escualosa
thoracata (Valenciennes, 1847), exploited
from the central west coast of India
 
Creator Gurjar, U R
Takar, Suman
Sawant, Milind
Pawar, Ravindra
Nirmale, Vivek H
Pawase, Anil S
Chakraborty, S K
Ramteke, Karan Kumar
Kumawat, Tarachand
 
Subject Pelagic Fisheries
 
Description Background: The present study assessed the growth and mortality parameters of the white sardine, Escualosa
thoracata which is having high local demand. The white sardine gained importance due to its taste, and high
demand in domestic markets as compared to the oil sardine necessitated a study on this resource to know the
present status of exploitation level along the central west coast of India.
Results: A total of 3026 individuals of different size groups of E. thoracata were randomly collected from the
Burondi fish landing center of the Ratnagiri district of Maharashtra. The asymptotic length (L∞) and growth
coefficient (K) were estimated to be 115 mm and 1.9 year−1, respectively, by ELEFAN-I and 135 mm and 1.2 year−1
by the scattergram. The value of t0 by von Bertalanffy plot was estimated to be −0.000012 year. The fish attained a
length of 65 mm, 94 mm, and 114 mm at the end of 0.5, 1, and 1.5 years of its life, respectively. The instantaneous
rate of total mortality (Z), natural mortality (M), and fishing mortality (F) were estimated to be 8.07 year−1, 2.55
year−1, and 5.52 year−1, respectively. The exploitation rate (U) was calculated as 0.65, and the exploitation ratio (E)
was 0.68.
Conclusion: The growth, mortality, and other population parameters observed in the present study will help to
understand the current stock status, which is pointing toward the over-fishing condition (E ˃ 0.50) of the white
sardine in the study area. Therefore, the present investigation suggests reducing the fishing pressure on E.
thoracata along the central west coast of India for the sustainability of the resource.
 
Publisher Springer
 
Date 2021
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/15128/1/Journal%20of%20Basic%20and%20Applied%20Zoology_2021_Tarachand%20Kumawat.pdf
Gurjar, U R and Takar, Suman and Sawant, Milind and Pawar, Ravindra and Nirmale, Vivek H and Pawase, Anil S and Chakraborty, S K and Ramteke, Karan Kumar and Kumawat, Tarachand (2021) Preliminary observation on the sustainability of white sardine, Escualosa thoracata (Valenciennes, 1847), exploited from the central west coast of India. The Journal of Basic and Applied Zoology, 82 (20). pp. 1-7.