Length–weight relationship and size at maturity of the Picnic seabream, Acanthopagrus berda (Forsskål, 1775)

Authors

  • M T Shilta ICAR-Central Marine Fisheries Research Institute, Calicut Regional station, Calicut, Kerala – 673 005, India
  • N K Chadha ICAR-Central Institute of Fisheries Education, Mumbai, Maharastra – 400 061, India
  • P P Suresh Babu ICAR-Central Marine Fisheries Research Institute, Calicut Regional station, Calicut, Kerala – 673 005, India
  • P K Asokan ICAR-Central Marine Fisheries Research Institute, Calicut Regional station, Calicut, Kerala – 673 005, India
  • K Vinod ICAR-Central Marine Fisheries Research Institute, Calicut Regional station, Calicut, Kerala – 673 005, India
  • I Joseph ICAR-Central Marine Fisheries Research Institute, Kochi, Kerala – 682 018, India
  • P B Sawant ICAR-Central Institute of Fisheries Education, Mumbai, Maharastra – 400 061, India
  • R Abhijith ICAR-Central Marine Fisheries Research Institute, Calicut Regional station, Calicut, Kerala – 673 005, India

DOI:

https://doi.org/10.56042/ijms.v51i06.65965

Keywords:

Acanthopagrus berda, Condition factor, Fecundity, Length-weight relationship, Size at maturity

Abstract

Length-weight relationship of Acanthopagrus berda was investigated from 720 specimens collected from Korapuzha estuary, Calicut, India. Length-weight relationship for male, female, transitional, undifferentiated and total sample population of A. berda were determined as W = 0.3994L2.536, W = 0.1694L3.0584, W = 0.14778L3.1044, W = 0.12015L3.285 and W = 0.16515L3.037, respectively. The overall mean b value (3.03±0.02) indicated isometric growth. Fecundity ranged from 117,821 to 2,225,243 eggs in females weighing 109.5 to 1753 g. Length at 50 % maturity was observed at 22.0 cm TL for males and 28.6 cm TL for females. Males (13 – 24 cm TL) dominated smaller length classes whereas females (25 – 43 cm TL) dominated in classes > 25 cm TL indicating protandrous hermaphroditism in A. berda.

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Published

2023-07-28

Issue

Vol. 51 No. 06 (2022): IJMS [June 2022]

Section

Research Articles

License

Copyright (c) 2022 Indian Journal of Geo-Marine Sciences (IJMS)

How to Cite

Length–weight relationship and size at maturity of the Picnic seabream, Acanthopagrus berda (Forsskål, 1775). (2023). Indian Journal of Geo-Marine Sciences (IJMS), 51(06), 550-558. https://doi.org/10.56042/ijms.v51i06.65965

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