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Bathymetric distribution of the marine prawn Metapenaeus dobsoni Miers off Cochin, Kerala

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Relation http://eprints.cmfri.org.in/1088/
 
Title Bathymetric distribution of the marine prawn Metapenaeus dobsoni Miers off Cochin, Kerala
 
Creator Thangaraj Subramanian, V
 
Subject Prawn and Prawn fisheries
 
Description Although M. dobsoni was recorded upto a maximum depth of 34 m, major part of the fishery
occurred in the 6-15 m depth zone. An inverse relationship between abundance and depth was
apparent, as revealed by the overall catch-rate of 2.20,0.92 and 0.13 kg hr. at ≤ 1 0 m, 15m and ≥ 20m,
respectively. The occurrence of higher proportion of larger specimens of both sexes was obvious
from the overall mean-size of 69.2, 73.4 and 82.3 mm for males and 78.2, 87.3 and 94.6 mm for
females recorded at the corresponding depths. The proportion of females in population also
progressively increased with depth and about 90% of the overall individuals inhabiting ^ 20m depths
were females, of which about 80% were spawaers. Immature females and relative proportion of
males in population were more at 10m depths.
 
Publisher MBAI
 
Date 1988
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/1088/1/Thanga_132-136.pdf
Thangaraj Subramanian, V (1988) Bathymetric distribution of the marine prawn Metapenaeus dobsoni Miers off Cochin, Kerala. Journal of the Marine Biological Association of India, 30 (1&2). pp. 132-136.