1,045 research outputs found
The Prawn fishery of the South Kanara coast with emphasis on the unusual catches of Metapenaeus dobsoni by purse seines and trawls during the first half of September, 1983
The commencement of the 1983-'84 fishing season witnessed bumper catches of prawns (Metapenaeus
dobsoni), particularly in purse seines, breaking all previous records. The unprecedented catch of prawns in purse seines might possibly be due to the fact that the resource of M.dobsoni was found to be very close to the shore. Moreover, the behavioural pattern of females to come off the bottom for spawning and remain in the column waters for considerable amount of time as they were fully exhausted. The huge size
of the purse seine nets helped to encircle large areas and fish the 'accumulated stock' resulted out of the
closed season (June-August) due to monsoon might have helped the mechanised fishery, particularly
purse seiners, to exploit them heavily. Although there has been wide fluctuations in the catch of M. dobsoni in September, during various seasons, the present studies indicated that the intensive fishing during September may not lead to any conservatory problems. These prawns have already reached their maximum size (prawns larger than the presently reported ones have not been recorded any time in the fishery) and hence in the fag end of their life
Stomatopod resources of the South Kanara Coast during 1983-'86
In the present account an appraisal of the fishery and utilization of Stomatopod resources was attempted based on the data collected during 1983-'86 along the South Kanara coast
Night Trawling for Prawns at Mangalore encouraging
There is considerable disparity in effort, catch and catch composition of prawns of day and night boats, an appraisal of the trawl fishery has been attempted here with special reference to day and night fishing, based on the data collected from Mangalore during the fishing season, 1982-83. The present studies also indicated that the average income per day of night fishing boats was considerably higher than that obtained by day units, thereby suggesting that night fishing was more profitable. The addition of more and more boats for night fishing in the recent years also point to the profitability of night operations
in comparison with day operations
Squilla (Mantis shrimp) fishery of Karnataka state
The stomatopod squilla, locally known as 'pucha' or
'puchi' (Malayalam: Che///), are marine crustaceans, caught
In varying quantities exclusively by shrimp trawlers operating
up to 50 m depth all along the east and west coasts of India.
Owing to the presence of large number of spines on the
body and the low flesh content, it is not being eaten at
present in our country. However, it is in considerable demand
since it is a good raw material for converting into fishmeal,
poultry feed and manure
Marine crab fisheries of Karnataka State- a retrospect
Marine crabs form 0.47 % of the
marine fish production and 2.1 % of
the trawl landings in Karnataka State.
The annual average crab production of
the State during 1983-1993 was to the
tune of 1179 tonnes which forms
about 5.1 % of the annual average marine
crab production of our country
for the same period
Food and feeding of Portunus (Portunus) sanguinolentus (Herbst) and Portunus (Portunus) pelagicus (Linnaeus) (Brachyura: Portunidae) along Karnataka coast
The diet of Portunus (Portunus) sanguinolentus and P.(P.) pelagicus Jmlin1y consisted of crustacean
Fishes, molluscs, large quantity of unidentified matter and debris. Quantitative analysis of the gut contents
revealed that crustaceans contributed to 47.1% and 42.6 %, fish remains 29.0 % and 20.4 %. molluscs
5.7% and 20.0 % detritus 4.9 % and 4.7 % respectively of the gut content by volume in both species
respectively. The study indicated that these crabs are primarily predators of sessile and slow moving benthic macro invertebrates
Length-weight relationship in two marine portunid crabs, Portunus (Portunus) sanguinolentus (Herbst) and Portunus (Portunus) pelagicus (Linnaeus) from the Karnataka coast
Portunus (Portunus) sanguinolentus and P.(P.)
Pelagicus support fishery of considerable value all
along the Indian coast and together contribute up to
96 % of the crab landings. In the context of
increased importance of crab resources and interest
eltinced in culture, there is an urgent need to study
tlie biology and related aspects
Spawning biology of two marine portunid crabs, Portunus (Portunus) sanguinolentus (Herbst) and Portunus (Portunus) pelagicus (Linnaeus) from the Karnataka Coast
Weekly samples of P (P) sallguilloienllls and P (P)
pelagicus caught by di !ferent type of gears were taken from
Mangalore, Malpe and Karwar - three important fish landing
centres in Kamataka during 1992-94 and analysed for carapace
width, weight, sex and maturity conditions. For describing the
gross maturity stages of ovary, the following stages were
recognised. I) immature virgins, 2) immature resting 3) early
maturing, 4) late maturing, 5) mature and 6) spent
The portunid crab Charybdis (charybdis) feriatus - An emerging fishery resource of Mangalore coast
The marine crab fishery by mechanised
trawlers along the Mangalore coast is mainly
supported by those belonging to the genera
Portunus and Charybdis of the family Portunidae
Potential new resources of penaeid prawns of the Mangalore coast
Penaeid prawns belonging to the genera Parapenaeopsis,
Penaeus and Metapenaeus of the
family Penaeidae exploited by mechanised trawlers
support a fishery of considerable magnitude
along the Mangalore coast. Among the penaeid
prawns exploited Metapenaeus dobsoni, M. Monoceros,
M. qffinis, Parapenaeopsis stylifera,
Penaeus indicus and P. monodon are important
and contribute upto 90-99 % of the prawn catch
along this coas
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