ICAR Research Data Repository for Knowledge Management
Sciaenid fishery off Visakhapatnam with some aspects of population dynamics of Johnius carutta (Bloch)
CMFRI Repository
View Archive Info| Field | Value | |
| Relation |
http://eprints.cmfri.org.in/159/
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| Title |
Sciaenid fishery off Visakhapatnam with some aspects of population dynamics of Johnius carutta (Bloch) |
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| Creator |
Rajkumar, U
Rao, K Narayana Kingsly, H Jose |
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| Subject |
Sciaenids
Population Dynamics |
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| Description |
The average annual catch of sciaenids by small-mechanized units operated off Visakhapatnam was 465 t, which formed 5.76% of the total landings. Of the thirteen species of sciaenids landed, Johnius carutta and Nibea maculata dominated the fishery. The estimated asymptotic length (L∝) and growth constant (K-year) of J. carutta were 295 mm and 0.40, respectively. The size at first maturity was 154 mm and the spawning season was during March - May. The mortality rates Z, F and M were 3.02, 2.05 and 0.97 respectively. The exploitation rate of 0.68 indicated heavy exploitation of the species. The yield/ recruit curves showed that the exploitation rate could be brought down to E max (0.57) without affecting the catch. |
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| Publisher |
CMFRI
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| Date |
2004
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Language |
en
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| Identifier |
http://eprints.cmfri.org.in/159/1/IJF_51_no.3_%2C2004_-_8.pdf
Rajkumar, U and Rao, K Narayana and Kingsly, H Jose (2004) Sciaenid fishery off Visakhapatnam with some aspects of population dynamics of Johnius carutta (Bloch). Indian Journal of Fisheries, 51 (3). pp. 311-318. |
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