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Deep-sea fishing for chondrichthyan resources and sustainability concerns— a case study from southwest coast of India

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Title Deep-sea fishing for chondrichthyan resources and sustainability concerns— a case study from southwest coast of India
 
Creator Akhilesh, K. V.
Ganga, U.
Pillai, N. G. K.
Vivekanandan, E.
Bineesh, K. K.
Shanis, C. P. R.
Hashim, M.
 
Subject Deep-sea chondrichthyans
Fishery
India
Management
Sustainability
 
Description 347-355
Elasmobranchs
comprising sharks, skates and rays have traditionally formed an important
fishery along the Indian coast. Since 2000, Indian shark fishermen are shifting
their fishing operations to deeper/oceanic waters by conducting multi-day
fishing trips, which has resulted in considerable changes in the species
composition of the landings vis- a-vis those reported during the 1980’s
and 1990’s. A case study at Cochin Fisheries Harbour (CFH), southwest coast of
India during 2008-09 indicated that besides the existing gillnet–cum- hooks &
line and longline fishery for sharks, a targeted fishery at depths >300-1000
m for gulper sharks (Centrophorus spp.) has emerged. In 2008, the chondrichthyan
landings (excluding batoids) were mainly constituted by offshore and deep-sea
species such as Alopias superciliosus
(24.2%), Carcharhinus limbatus (21.1%),
Echinorhinus brucus (8.2%), Galeocerdo cuvier (5.4%), Centrophorus spp. (7.3%) and Neoharriotta pinnata (4.2%) while the
contribution by the coastal species such as Sphyrna lewini (14.8%), Carcharhinus
sorrah (1.4%) and other Carcharhinus
spp. has reduced. Several deep-sea sharks previously not recorded in the
landings at Cochin were also observed during 2008-09. It includes Hexanchus griseus, Deania profundorum,
Zameus squamulosus and Pygmy false catshark (undescribed) which have been reported for the first time from Indian
waters. Life history characteristics of the major fished species are discussed
in relation to the fishery and its possible impacts on the resource.
 
Date 2011-07-19T04:44:32Z
2011-07-19T04:44:32Z
2011-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/12424
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.40(3) [June 2011]