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

Chellappan, Anulekshmi and Nakhawa, A D and Azeez, P A and Akhilesh, K V and Santhosh, B and Khandagale, P A and Ghosh, Shubhadeep and Zacharia, P U and Rohit, Prathibha (2024) Biology of the Bombayduck Harpadon nehereus (Hamilton, 1822) from the north-eastern Arabian Sea, India. Indian Journal of Fisheries, 71 (1). pp. 70-81. ISSN 0970 - 6011

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Abstract

The Bombayduck Harpadon nehereus (Hamilton, 1822) is a common species and major contributor to the fishery in the northern Arabian Sea. The biology of H. nehereus, exploited by 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 range of 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 contained ova of all maturity stages indicating the species to be a continuous spawner. The absolute fecundity ranged from 23,444 to 1,34,432 eggs per fish and relative fecundity ranged from 235-430 eggs g-1. The gonadosomatic index and monthly maturity stages suggested that H. 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. The diet analysis showed H. nehereus to be a highly carnivorous predator which fed mainly on crustaceans (Index of Relative Importance, IRI = 82.7%) followed by teleosts (17.3%). The present article discusses the biology of H. nehereus in the north-eastern Arabian Sea.

Item Type:	Article
Uncontrolled Keywords:	Biology; Bombayduck; Fisheries; Harpadon nehereus; Indian Ocean; Trophic leve
Subjects:	Fishery Biology Demersal Fishes > Bombay duck Fish and Fisheries
Divisions:	CMFRI-Mangalore CMFRI-Mumbai CMFRI-Veraval CMFRI-Visakhapatnam CMFRI-Kochi > Marine Capture > Finfish Fisheries Division Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Finfish Fisheries Division CMFRI-Kochi > Marine Capture > Finfish Fisheries Division Subject Area > CMFRI-Kochi > Marine Capture > Finfish Fisheries Division
Depositing User:	Arun Surendran
Date Deposited:	02 Apr 2024 04:34
Last Modified:	11 Apr 2024 08:38
URI:	http://eprints.cmfri.org.in/id/eprint/18250

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