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Indian Journal of Geo-Marine Sciences (IJMS) >
IJMS Vol.41 [2012] >
IJMS Vol.41(3) [June 2012] >
| Title: | Impact of non-selective gears on kingseer, Scomberomoruscommerson fishery in Karnataka |
| Authors: | Dineshbabu, A.P.
Muthiah, C.
Sasikumar, Geetha
Rohit, Prathiba
Bhat, Uma S. |
| Keywords: | Seerfish
Fishery
Juveniles
Growth overfishing |
| Issue Date: | Jun-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Catch-length analysis of kingseer, Scomberomorus commerson from motorised
(drift gillnets) and mechanized (purseseine and trawl) fishing operations in
Karnataka from 2004 to 2009 was analyzed. Length composition varied in
different gears with smaller fishes being predominant in trawl (59.6%) followed
by purseseine (39.2%). In drift gillnet young ones formed only 1.2%. Thompson
and Bell model predictionsof kingseer stock in the multifleet fishing scenario
were attempted to examine the effects of the motorized and mechanized efforts
on the maximum economic yield (MEY) by simulating different effort
combinations. Theoretical economic yield obtainable from the drift gillnet
fishery alone was obtained at 60% of the current F is (48.1%). This yield is
much higher than those obtained from the present multi-gear fishery. When the
drift gillnet and purseseine efforts are varied while avoiding the exploitation
of juveniles in trawl, 28% increase in MEY is predicted at Rs. 1,087 million.
Hence a reduction in the effort expended, by restricting trawl and purseseine
operations and retaining the large meshed drift gillnets (65-170 mm) at MEY
levels will result in maximum economic returns and for sustainability. |
| Page(s): | 265-271 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1033 (Online); 0379-5136 (Print) |
| Source: | IJMS Vol.41(3) [June 2012]
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