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Exploitation of perch fishery resource off Tuticorin by small mechanised trawlers with an account on the biology of Scolopsis bimaculatus Ruppell

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Relation http://eprints.cmfri.org.in/2950/
 
Title Exploitation of perch fishery resource off Tuticorin
by small mechanised trawlers with an account
on the biology of Scolopsis bimaculatus Ruppell
 
Creator Mohamad Kasim, H
Ameer Hamsa, K M S
Sam Bennet, P
Rajapackiam, S
Arumugam, G
 
Subject Perch fishes
 
Description Annual average perch production was 2541.2 tonnes at the catch rate of 88.8 kg/unit by average effort of
28612 units of small mechanised trawlers measuring 14 m and below. Peak periods of perch fishery were during
June-September and a minor peak during December-February. Inspite of the comparative decline in the catch rate
of perch, there is a scope for further increase in perch production provided the effort is increased. The age and
growth of Scolopsis bimaculatus is described by the von Bertalanffy growth equation i.e. \ = 322 (1-e ''"''* (tto.oois))
This species attains a size of 163.6, 243.9, 283.5 and 303.0 mm in 0.5, 1.0, 1.5 and 2.0 years. Length - weight
relationship of this species is defined by the equation Log W = -5.6848 + 3.3699 Log L and the Woo is 584 g. The
natural mortality coefBcient (M) is estimated to be 2.2, the total mortality coefficient (Z) is 3.2 and the fishing
mortality rate (F) is 1.0. Yield per recruit of this species indicates that for the prevailing M/K ratio 1.56 and age
at first capture 0.4353 the F^^^ which can produce the Y^^^ of 52.3 g is 4.5 and suggests that the fishing effort may
be increased further from the present level to enhance the yield of this species as in the case of L. nebulosus and
N. delagoae. The fish is a carnivore feeding on fishes, amphipods, Squilla spp., brittle stars, prawns, cuttlefish,
polychaetes and molluscs.
 
Publisher CMFRI Kochi
 
Date 1994
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/2950/1/Article_10.pdf
Mohamad Kasim, H and Ameer Hamsa, K M S and Sam Bennet, P and Rajapackiam, S and Arumugam, G (1994) Exploitation of perch fishery resource off Tuticorin by small mechanised trawlers with an account on the biology of Scolopsis bimaculatus Ruppell. CMFRI Bulletin-Perch fisheries in India, 47. pp. 106-111.