Captive broodstock development, induced breeding and embryonic development of Bengal yellowfin bream Acanthopagrus datnia (Hamilton, 1822)
Year: 2024
Type: article
Abstract: The current study aim to develop the protocol for induced breeding of Bengal yellowfin bream Acanthopagrus datnia (Hamilton, 1822) in captivity. Adult male and female fish (weight range: 100-425 g; total length range: 90-260 mm) were implanted with luteinising hormone releasing hormone analog (LHRHa) pellet (dose: 33.33 μg pellet-1) and reared in the brackishwater (4.33-9.67 ppt) for a year. Mature female (oocyte diameter, OD: 400.52-408.78 μm) were administered with different doses of aqueous LHRHa viz. 10, 20, 30 and40 μg LHRHa kg-1 body weight. Simultaneously, oozing males were administered with half the dose of LHRHa. Male and female (sex ratio: 2:1) were placed in breeding tanks (salinity: 31±0.50 ppt) (n=3). The fish spawn after the latency period of 55.67±0.47 h. During the course of embryonic development, fertilised eggs (diameter: 859.64±17.21 μm) passes through morula, blastula, gastrula and organogenesis at 2:00, 2:15, 8:00 and 14:30 hours post spawning (hps), respectively. Larvae hatched out after an incubation period of 28±1.5 h (16.200C) and measured 1.70± 0.08 mm. Results showed that the A. datnia broodstock can be developed in brackishwater and spawn successfully with the dose of 30 μg LHRHa kg-1 body weight to females and half the dose to males at 31 ppt salinity. Keywords: Bengal yellowfin bream, Captive maturation, Embryonic development, Induced breeding
Source: Indian Journal of Fisheries
Authors: Prem Kumar, M. Kailasam, K. P. Jithendran
Language: English
Subfield: Physiology
Domain: Life Sciences
SDGs: Life below water, Zero hunger
Open Access status: diamond
OpenAlex ID: W4407259037