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Title Energy analysis of mini-trawl operations, off Cochin, Kerala, India
 
Names Boopendranath, M.R.
Hameed, M.S.
Date Issued 2013 (iso8601)
Abstract Mini-trawls are towed gear consisting of funnel
shaped body of netting closed by a bag or codend
and extended sides in the front to form wings. They
are usually operated from a single vessel, using a
pair of small otter boards as horizontal spreading
device. Fish production and energy requirement in
the mini-trawl operations, off Cochin, Kerala, India
are discussed in this paper. Mini-trawling is generally
targeted at coastal prawn resources, particularly
Parapenaeopsis stylifera and Metapenaeus dobsoni. Mean
catch per year per mini-trawler during the period of
study (1997-98) was 10.26 t, 48.1% of which was
constituted by prawns, followed by flat fishes
(33.1%), crabs (12.0%) and miscellaneous finfishes
(6.8%). Total embodied energy inputs into minitrawler
operation was estimated to be 207.04 GJ and
the energy equivalent of fish produced was 38.62 GJ.
The GER t fish-1 for mini-trawling was estimated to
be 20.2 GJ, which is quite high for a coastal fishing
operation. Kerosene constituted 86.24% of the GER,
followed by petrol (8.39%), lubricating oil (3.30%),
fishing gear (1.4%), outboard motor (0.58%) and
fishing craft (0.06%). Energy ratio for mini-trawling
was 0.19 and energy intensity 5.36. The mini-trawl
operations in the coastal waters need to be strictly
regulated in view of the high GER and predominance
juveniles in the landings and the implied
negative impacts on environment and resources.
Genre Article
Topic mini-trawl
Identifier Fishery Technology 2013: 50 (3), 289-293