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Biology of the Bombayduck Harpadon nehereus (Hamilton, 1822) from the north-eastern Arabian Sea, India: Biology of Bombay duck in north eastern Arabian Sea

Indian Agricultural Research Journals

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Title Biology of the Bombayduck Harpadon nehereus (Hamilton, 1822) from the north-eastern Arabian Sea, India: Biology of Bombay duck in north eastern Arabian Sea
 
Creator C. Anulekshmi
Ajay D. Nakhawa
P. Abdul Azeez
K. V. Akhilesh
S. Bhendekar
P. A. Khandagle
S. Ghosh
P. U. Zacharia
Prathibha Rohit
 
Subject Harpadon nehereus
biology
bombay duck
Indian ocean
fisheries
trophic level
 
Description The Bombayduck Harpadon nehereus (Hamilton, 1822) is a common species and majorcontributor to the fishery in the northern Arabian Sea. The biology of H. nehereus, exploitedby set bagnets (SBN, dol netters) and trawlers from the northern Arabian Sea coast of India(Gujarat and Maharashtra) was investigated during 2014 to 2019. Fishes with a size rangeof 30-408 mm mainly contributed to the fish landing. The sex ratio (male: female) was 1:1.5.Length at maturity (Lm) for females was estimated at 207 mm TL. Mature ovaries containedova of all maturity stages indicating the species to be a continuous spawner. The absolutefecundity ranged from 23,444 to 1,34,432 eggs per fish and relative fecundity ranged from235-430 eggs g-1. The gonadosomatic index and monthly maturity stages suggested thatH. nehereus is a continuous spawner with peaks occurring from February to April. The ‘b’value in the length-weight relationship was 3.31 showing a positive allometric growth. Thediet analysis showed H. nehereus to be a highly carnivorous predator which fed mainly oncrustaceans (Index of Relative Importance, IRI = 82.7%) followed by teleosts (17.3%). Thepresent article discusses the biology of H. nehereus in the north-eastern Arabian Sea.
 
Keywords:Biology, Bombayduck, Fisheries, Harpadon nehereus,Indian Ocean, Trophic level
 
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/131151
10.21077/ijf.2024.71.1.131151-09
 
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/131151/54241
 
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