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The oil sardine fishery in the Mangalore zone during the seasons 1963—64 and 1967—68

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Relation http://eprints.cmfri.org.in/1371/
 
Title The oil sardine fishery in the Mangalore
zone during the seasons
1963—64 and 1967—68
 
Creator Prabhu, M S
Dhulkhed, M H
 
Subject Oil sardine
 
Description The oil sardine fishery in the Mangalore zone showed an upward trend from
1963-64 to 1966-67 when the catches increased seven-fold from 52 to 386 tonnes, which
was followed by a slight decline to 243 tonnes in 1967-68. Among the gears operated for
the oil sardine fishery, the highest catch-per-unit-efFort values were obtained for the
cast net, chala bale and rampant. The best catches of oil sardine were obtained during
September-December period when temperature and salinity values ranged 25.5 to 28.6''C
and 28.98 to 34.36 %, respectively. The length frequency studies indicate that the oil
sardine attains a size of about 100-110 mm during the first year, 150-160 mm during the
second year and 175-180 mm during the third year of its appearance. The fishery during
the various years was supported by difierent year classes. One and two-year olds dominated
in 1963-64, 1966-67 and 1967-68 and one-year olds in 1964-65. In 1965-66,
one-year olds formed the mainstay of the fishery, although the two-year olds also contributed
from December onwards. O-year class was seen entering the fishery during
the months of August and September in 1964-65, 1965-66 and 1966-67, as also in October
and again in January and February during 1967-68. Two or more broods have been
observed to enter the fishery during certain years. Judged from the rate of growth and
the size attained by the smaller size groups composing the O-year class, the interval between
the entries of various broods has been observed to vary from one to three months.
The estimated average rate of decrease diu'ing the five-year period worked out to 0.72,
the instantaneous rate of mortality being 1.27.
 
Publisher CMFRI/ICAR
 
Date 1970
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/1371/1/Article_09.pdf
Prabhu, M S and Dhulkhed, M H (1970) The oil sardine fishery in the Mangalore zone during the seasons 1963—64 and 1967—68. Indian Journal of Fisheries, 17 (1&2). pp. 57-75.