Rao, M V Hanumantha and Ghosh, Shubhadeep and Sreeramulu, K and Uma Mahesh, V and Satish Kumar, M and Muktha, M (2017) Reproductive biology of Nemipterus japonicus (Bloch, 1791) in the trawl grounds along the north-east coast of India. Indian Journal of Fisheries, 64 (4). pp. 21-27.
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IJF_64.4_M V Hanumantha Rao_Reproductive biology of Nemipterus japonicus.pdf Download (386kB) | Preview |
Abstract
The reproductive biology of Nemipterus japonicus (Bloch, 1791) along the north-east coast of India was studied during 2012-2015 based on samples from the trawl landings at Digha, Paradeep, Visakhapatnam and Kakinada. Adults dominated the landings. Significant contribution by females was observed in most months of the year. Size at first maturity for females was 15.1 cm. Peak spawning season was during August to February and September to March in the northern and southern regions. Maturity and gonado-somatic index (GSI) were found to correlate well with sea surface temperature (SST). Fecundity increased with length and weight and varied from 13,176 to 1,30,798. Ova diameter distribution indicated the species to be a multiple/batch spawner.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Fecundity, Maturity, Nemipterus japonicus, North-east coast, Sex ratio |
| Subjects: | Demersal Fisheries > Threadfin breams Fishery Biology |
| Divisions: | CMFRI-Visakhapatnam |
| Depositing User: | Arun Surendran |
| Date Deposited: | 04 Jan 2018 09:14 |
| Last Modified: | 04 Jan 2018 09:14 |
| URI: | http://eprints.cmfri.org.in/id/eprint/12460 |
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