Conference paper (EIS)

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Browsing Conference paper (EIS) by Author "Nair, A.K.K."

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    Economics of operation of fishing vessels (trawlers)
    (Society of Fisheries Technologists (India), Cochin, 1985) Iyer, H.K.; Unnithan, G.R.; Rao, P.S.; Nair, A.K.K.; Nair, R.G.
    The economics of operation of fishing trawlers of 9.75m and 10.97m overall length is reported on the basis of a case study. There is a significant positive correlation between the number of fishing trips and the average receipts per trip. The profits of the 9.75m and 10.97m trawlers for the fishing season were 26.9% and 21.7% respectively on the basis of 225 fishing trips in a year. The break even point for the trawlers lies between 175 and 185 fishing trips. Fuel cost contributes nearly 45% of the cost of operation of the boat. Subsidy to diesel oil was suggested to improve the profitability of the fishing trawlers.
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    Idle capacity of fish processing (freezing) plants in india-a comparative study of plants in east and west coasts
    (Society of Fisheries Technologists (India), Cochin, 1985) Iyer, H.K.; Rao, P.S.; Nair, A.K.K.; Nair, R.G.
    The extent of idle capacity in the fish processing plants in India estimated by a stratified sampling plan for 1978 to 1981 and the comparison of the idle capacity in the west and east coasts are reported. There was no appreciable difference in the idle capacity of plants between the coasts. a marked decreasing trend in the idle capacity was observed in both the coasts for he period under study. Causes for under utilisation and remedial measures are analysed.
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    Impact of square mesh codend on conservation of resources
    (Fishery Survey of India, Mumbai (India), 2004) Varghese, M.D.; Manoharadoss, R.S.; Nair, A.K.K.
    Retention of immature and undersized species of fishes and shrimps in the conventional diamond mesh codends of trawls, results in indiscriminate exploitation and consequent resource crunch. Replacement of diamond mesh codend with square mesh which remain open under tow unlike the former, facilitates escape of juveniles through better filtration. Length frequency studies were undertaken with codends of different shape and size to compare the size pattern of different species caught in the diamond and square mesh codends and also to evaluate the performance in reducing the retention of discards and immature fish. The analysis of the data revealed that the square mesh codends retained considerably less small fish. The length at 50% retention was more in square mesh codends in respect of certain species. But this phenomenon was not applicable to some species in view of the morphological difference between species and also when the codend is saturated with high catch.
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    Statistical studieson gear efficiency
    (Society of Fisheries Technologists (India), Cochin, 1982) Nair, A.K.K.; Alagaraja, K.
    In this paper it is indicated that there exists a critical number above which the relative efficiencies are discernible and below which, it is not possible to indicate whether one gear is more efficient than the other. This region where indication of relative efficiency is not possible, is termed as null region. The concept of null region and evaluation of Nc the critical number is dealt with and a mathematical model is found using simulation technique. In case of effective region, method of comparing efficiencies is pointed out.