Energy Analysis of the Ring Seine Operations, off Cochin, Kerala
Energy Analysis of the Ring Seine Operations, off Cochin, Kerala
Date
2012
Authors
Boopendranath, M.R.
Hameed, M.S.
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India), Cochin
Abstract
Ring seines are lightly constructed purse seines
adapted for operation in the traditional sector. Fish
production and energy requirement in the ring seine
operations, off Cochin, Kerala, India are discussed
in this paper, based on data collected during 1997-
1998. The results reflect the Gross Energy Requirement
(GER) situation that existed during 1997-1998.
Mean catch per ring seiner per year worked out to
be 211.9 t of which sardines (Sardinella spp.)
constituted 44.3%, followed by Indian mackerel
(Rastrelliger kanagurta) 29.7%, carangids 11.4%,
penaeid prawns 2.2%, pomfrets 1.1% and miscellaneous
fish 11.3%. Total energy inputs into the ring
seine operations were estimated to be 1300.8 GJ.
Output by way of fish production was determined
to be 931.85 GJ. GER is the sum of all non-renewable
energy resources consumed in making available a
product or service and is a measure of intensity of
non-renewable resource use. GER per tonne of fish
landed by ring seiners was estimated to be 6.14.
Among the operational inputs, kerosene constituted
73.4% of the GER, followed by petrol (12.7%), diesel
(6.7%) and lubricating oil (2.4%). Fishing gear
contributed 3.8%, engine 0.8% and fishing craft
0.3% of the GER. Energy ratio for ring seining was
0.72 and energy intensity 1.40.
Description
Keywords
Ring seine, fish production, gross energy requirement
Citation
fishery technology 2012: 49(2), 141-146