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Population parameters of sawtooth barracuda Sphyraena putnamae (Jordan and Seale, 1905) exploited along western Bay of Bengal

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Relation http://eprints.cmfri.org.in/15388/
http://epubs.icar.org.in/ejournal/index.php/IJF/article/view/110058
10.21077/ijf.2021.68.3.110058-01
 
Title Population parameters of sawtooth barracuda Sphyraena putnamae
(Jordan and Seale, 1905) exploited along western Bay of Bengal
 
Creator Ghosh, Shubhadeep
Satish Kumar, M
Manas, H M
Rohit, Prathibha
Abdussamad, E M
Gopalakrishnan, A
 
Subject Pelagic Fishes
 
Description Population parameters have been studied in nine of the 21 species of barracudas reported globally. Along the Bay of
Bengal, Sphyraena putnamae (Jordan and Seale, 1905) forms a significant fishery; however, no information exists globally
with respect to its growth, mortality and exploitation. This maiden study details the population dynamics analysed from
samples collected from trawlnetters, gillnetters and hooks and lines along the western Bay of Bengal during January 2017 to
December 2019. The mean fork length in the catch was 50.8 cm with the largest individual measuring 108.0 cm, the highest
ever length recorded for the species. von Bertalanffy growth equation derived is Lt

= 113.87 [1 - e -0.23 (t + 0.0636)]. The fishery
was dominated by 1-4 year old age classes and lifespan estimated was 12.98 years. Year-round recruitment with the major
peak producing 60.87% of the annual recruits was observed from February to June. Natural, fishing and total mortalities
were 0.46, 0.25 and 0.71 per year, respectively. Exploitation rate (E) estimated was 0.35 with the exploitation ratio (U) being
0.18. Though the current status indicates that the stock is underexploited, it is however prudent to adopt a precautionary
approach, considering the small size as well as age of exploitation, through adoption of measures such as increase in mesh
size of trawlnetters and spatio-temporal fishing restrictions in nearshore nursery waters.
 
Publisher ICAR-Central Marine Fisheries Research Institute
 
Date 2021
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/15388/1/Indian%20Journal%20of%20Fisheries_2021_Shubhadeep%20Ghosh.pdf
Ghosh, Shubhadeep and Satish Kumar, M and Manas, H M and Rohit, Prathibha and Abdussamad, E M and Gopalakrishnan, A (2021) Population parameters of sawtooth barracuda Sphyraena putnamae (Jordan and Seale, 1905) exploited along western Bay of Bengal. Indian Journal of Fisheries, 68 (3). pp. 1-7.