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Indian Journal of Geo-Marine Sciences (IJMS) >
IJMS Vol.40 [2011] >
IJMS Vol.40(3) [June 2011] >
| Title: | Deep-sea fishing for chondrichthyan resources and sustainability concerns— a case study from southwest coast of India |
| Authors: | Akhilesh, K. V.
Ganga, U.
Pillai, N. G. K.
Vivekanandan, E.
Bineesh, K. K.
Shanis, C. P. R.
Hashim, M. |
| Keywords: | Deep-sea chondrichthyans
Fishery
India
Management
Sustainability |
| Issue Date: | Jun-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | 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. |
| Page(s): | 347-355 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1033 (Online); 0379-5136 (Print) |
| Source: | IJMS Vol.40(3) [June 2011]
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