Reproductive biology of the orangefin ponyfish Photopectoralis bindus (Valenciennes, 1835) off Mangaluru coast, Karnataka
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Authors
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Shoba Rawat
Department of Fisheries Resource Management, College of Fisheries, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana- 141 001, Punjab
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Jitendra Kumar
College of Fisheries, Karnataka Veterinary, Animal and Fisheries Sciences University, Mangalore-575002, India
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S. Benakappa
Prof and Head
Dept of FRM
CoF Mangalore, Karnataka
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Mahesh Chand Sonwal
Dept of FRM
CoF Mangalore, Karnataka
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Kumar A. S. Naik
Dept of FRM
CoF Mangalore, Karnataka
Abstract
The spawning periodicity of Photopectoralis bindus (Valenciennes, 1835) was studied off Mangaluru coast from September 2015 to April 2016 using 490 specimens with total length 6.8-12.3 cm (9.6±0.9 cm) and body weight 4.6 -30.28 g (14.20±3.59 g). Results indicated that the average sizes at maturity were 9.3 cm (males) and 9.5 cm (females). The male-female ratio was 1:0.72. Absolute fecundity estimated was 9349±853 eggs that increased with fish size (R2 = 0.92). Higher gonado-somatic index (GSI) was observed in post-monsoon season with peak value in December (female: 3.39±1.00%; male: 2.84±0.796%) indicating seasonal spawning of the fish.
Keywords: Fecundity, Orangefin ponyfish, Photopectoralis bindus, Spawning periodicity
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