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Field Value
 
Creator Thangaraj Subramanian,V
 
Description Not Available
The annual prawn landings along Chennai during 1992-'99 vary from 1938t in
1992-'93 to a record 4477t in 1994-'95, with an average of 3235t at 5.29 kg/hr
contributing to 10.1% of trawl catches. Primary fishery occurs around January-
February and the secondary during July-September, with distinctly poor abundance
in peak monsoon and summer months. Migratory populations support
substantial fishery. M. dobsioni (664t, 20.5%), P. indicus, (491t, 15.2%), P.
maxillipedo (392t, 12.1%) and M. monoceros (305t, 9.45%) are the abundant
species. The magnitude of abundance of P. maxillipedo is unique. Marginally
deeper species of Matapenaeopsis and Trachypenaeus, share the catches in moderate
abundance and the larger P. semisulcatus (156t, 4.8%) and P. mondon
(59t, 1.8%) add considerable remunerative values. Revealed by species distribution,
Cauvery-Pulicat axis could be apportioned as single block for effective
resource management.
Peak recruitment takes place around September-October and January-February
in M.dobsoni; around June-September and December-January in P. indicus
and May-June and September-October in P. maxillipedo. The MSY is estimated
at 3552t, which is marginally above the average catch of 3235t for 1992-99,
suggesting the exploitation remains under optimum level during the years. However,
fixation of catch and effort limits seems to have no relevance, as the rapid
and steep annual variations of catches reveal the prawn productivity here is
largely influenced by uncontrollable natural factors. In addition to this, uncertainties
in the extent and intensity of distant fishing also casts perceptible fluctuations
in catches.
Not Available
 
Date 2021-08-23T09:55:25Z
2021-08-23T09:55:25Z
2002
 
Identifier Not Available
NA
http://krishi.icar.gov.in/jspui/handle/123456789/59745
 
Language en