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Fishery and reproductive biology of the spotted sardinella Amblygaster sirm (Walbaum, 1972) exploited along the southern coast of India: stock dynamics of spotted sardinella

Indian Agricultural Research Journals

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Title Fishery and reproductive biology of the spotted sardinella Amblygaster sirm (Walbaum, 1972) exploited along the southern coast of India: stock dynamics of spotted sardinella
 
Creator S. Surya
G. Angel
M. K. Anil
Y. Dispin Das
T. M. Najmudeen
R. Siju
P. R. Shaila
M. Febna
E. M. Abdussamad
Prathibha Rohit
 
Subject Amblygaster sirm
Gonadosomatic index
sex ratio
fecundity
lm 50
histology
 
Description The study focused on the fishery and biological aspects of the spotted sardinellaAmblygaster sirm (Walbaum, 1972) exploited along the southern coast of India from 2015to 2020. The summary of the fishery reveals noticeable annual fluctuations in landing, withpeak landings reported from November to March along the coast. The study included fishwith total length (TL) ranging from 149 to 208 mm in males and 152 to 217 mm in females.The peak in gonadosomatic Index (GSI) in January indicates its spawning season, and Lm50was estimated at 172 mm TL in females. The sex ratio (F: M) was determined at 1:1.2, withmales dominating most months. Fecundity ranged from 11632 to 43200 eggs per spawning.Five stages of maturity in A. sirm were identified through external analysis of gonads. Sevenhistological ovarian stages of A.sirm were recorded, providing a primary reference forfuture studies. These findings aim to assist fishery managers and policymakers in adoptingeffective management practices for the sustainable harvesting of this resource.
 
Keywords:Amblygaster sirm, Gonadosomatic index, Sex ratio,Fecundity, Lm50, Histology
 
Publisher Central Marine Fisheries Research Institute (on behalf of Indian Council of Agricultural
 
Date 2024-03-31
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier https://epubs.icar.org.in/index.php/IJF/article/view/131142
10.21077/ijf.2024.71.1.131142-07
 
Source Indian Journal of Fisheries; Vol. 71 No. 1 (2024)
0970-6011
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/IJF/article/view/131142/54239
 
Rights Copyright (c) 2024 Indian Journal of Fisheries