1965

Permanent URI for this community

http://localhost:4000/handle/123456789/5925

Browse

Browsing 1965 by Issue Date

Filter results by year or month
Now showing 1 - 13 of 13
  • Item
    Life history of prawns: a review of recent studies with special reference to Indian species
    (Society of Fisheries Technologists (India) Cochin, 1965) Krishna Menon, M.
    The paper contains a brief review of the studies on the life histories of Indian species of prawns chiefly belonging to the family Penaeidae. References to similar work carried out outside India are furnished where significant variations have been observed. The three main larval stages viz., Nauplius, Protozoea and Zoea (Mysis) and their important characteristics, including modes of locomotion, are described. The post-larval development of one species that has been studied in detail (Metapenaeus dobsoni) is indicated in outline. Some aspects of the bionomics of these prawns, especially breeding and migration, are also briefly dealt with in view of their relevance in their life cycle. An outline of the life histories of some Palaemonid prawns of both fresh water and marine habitats is added at the end and the need for well- planned investigations in regard to species of such economic value as Palaemon carcinus (Macrobrachium rosenbergii) is indicated.
  • Item
    Breeding behaviour in Macrobrachium rosenbergii (De Man)
    (Society of Fisheries Technologists (India) Cochin, 1965) Mallikarjuna Rao, R.
    During the course of experimentations on the inducement of breeding in Macrobrachium rosenbergii (De Man) under laboratory conditions, detailed observations on the mating behaviour of the species have been made, which have been elaborated in this account. Various behaviour patterns have been analysed critically and the probable directive and releasive factors for these behaviour patterns discussed. Differences in behaviour of the male resulting from the introduction of another mature male in the arena have been described. An aberrant displacement activity which has been observed in one of the males has also been discussed.
  • Item
    Pawn fishery in Gujarat location of new prawn grounds off Veraval
    (Society of Fisheries Technologists (India) Cochin, 1965) Anon
    Details about the three departmental vessels, Gulf shrimp, Indian Salmon and Silver Pomfret and gear in the exploratory fishing off Veraval coast are reported. Potential prawn fishing grounds have been located by their operation in section 20-70, 21-69 and 22-69 in the cruises conducted in October, 1962. Observation regarding suitability of gear and composition of catch are given. The possibility of better prawn grounds occurring in areas deeper than the present grounds is indicated.
  • Item
    The free and combined amino acid contents in species of Caulerpa from southeast coast of India
    (Society of Fisheries Technologists (India) Cochin, 1965) Lewis, E.J.
    Caulerpa racemosa var. macrophysa, C. racemosa var cornyphora and C. scalpelliformis are analyzed by quantitative paper chromatographic technique for their amino acid contents in proteins, peptides and free state. It is found that no appreciable variation occurs in the quality of amino acid make up in these algae; but quantitative differences are apparent in them. Moreover, both qualitative and quantitative variations occur in the amino acid make up of the peptides, and in the free state. The results are compared with those of the other investigations.
  • Item
    Preservation of prawns with chemicals
    (Society of Fisheries Technologists (India) Cochin, 1965) Shaikhmahamud, Fatima; Magar, N. G.
    The preservation of prawns with boric acid, dipotassium hydrogen phosphate, sodium bisulphite, ascorbic acid, citric ascorbic acid mixture, acronise pd, foromycin and penicillin have been investigated. Acronise pd, foromycin and citric ascorbic acid mixture in the order named proved the most effective inhibitors of growth of the natural mixture flora at temperatures between -18°C and 28°C; while foromycin inhibited yeast growth and sodium bisulphite and boric acid retarded melanosis. Acronise pd caused marked inhibition of bacterial growth in 5 to 50 per ml concentration, when used as an immersion medium for 10 to 15 minutes. The other chemicals used exerted a less intense action or were without any effect.
  • Item
    Evaluation Of Chemical Tests For The Quality Of Prawns
    (Society of Fisheries Technologists (India) Cochin, 1965) Shaikhmahamud, F.; Magar, N.G.
    The object of this study was to determine the value of physical, bacteriological and chemical tests used to find out and compare the indices of quality of prawns stored at 0°C and at 18°C. pH value, nature of drip, the total bacterial count, presence or absence of tryptophan, trimethylamine content, glycogen, lactic acid, vitamins such as thiamin, riboflavin and niacin were estimated periodically to evaluate the quality of prawns stored at 0°C, whereas in addition to organoleptic changes, pH, bacterial count, nature of growth in peptone water, soluble protein in salt solution and loss of moisture, glycogen, lactic acid, and changes in vitamin B contents were noted periodically for prawns stored at -l8°C. Riboflavin and niacin were not affected appreciably but the retention of thiamin in prawns was very low.
  • Item
    Fisheries Hydrography
    (Society of Fisheries Technologists (India) Cochin, 1965) Qasim, S.Z.
    The article is based on a talk given before a meeting of the Society of Fisheries Technologists, India.
  • Item
    Studies on the biochemical composition of some freshwater fishes. Pt. 2. Liver
    (Society of Fisheries Technologists (India) Cochin, 1965) Jafri, A.K.; Qasim, S.Z.
    Although considerable work has been done on the composition of fish liver oils, most of which includes the study of various vitamins and fatty acids, little attention has been paid towards the composition of fish liver as a whole.
  • Item
    On the naturalness of change in marine populations
    (Society of Fisheries Technologists (India) Cochin, 1965) Brinton, E.
    Based on a talk given before a meeting of the Society of Fisheries Technologists, India.
  • Item
    Effect of different media on the determination of the number of micro organisms in frozen prawns (shrimp)
    (Society of Fisheries Technologists (India) Cochin, 1965) Rajagopal, M.V.
    The Indian standards Institution have recently laid down specifications for the grading of frozen shrimp of which the bacterial examination of the product forms a significant part. Work carried out in this regard in our laboratories have shown that various improvements could be made in the composition of the medium to obtain a more true picture of the total bacterial count. Changes in the medium for total bacterial count have, therefore, been suggested and the reasons for the same discussed.
  • Item
    Determination of ubiquinone and tocopherol in heart, liver and muscle tissues of fresh water fish, Rohu (Labeo rohita, Hamilton)
    (Society of Fisheries Technologists (India) Cochin, 1965) Pawar, S.S.; Mager, N.G.
    The liver, heart and muscle tissues of Rohu, (Labeo rohita, Hamilton) were examined for their ubiquinone (UQ) and tocopherol contents. These three tissues contained respectively 11.60, 3.94 and 0.19 mg of ubiquinone and 10.16, 5.32 and 3.58 mg of tocopherol per 100 g. The 4% (V/V) of diethyl ether (EE) in light petroleum ether (PE) fractions of all three tissues on paper chromatographic separation gave spots having the same Rf value as standard ubiquinone-50 (UQ 10). Both the 4% and 6% (V/V) diethyl ether in light petroleum ether fraction of liver, heart and muscle tissues gave a single spot with the same Rf value as α – tocopherol.
  • Item
    Prawn fishing by M.F.V. Jheenga in Bombay waters
    (Society of Fisheries Technologists (India) Cochin, 1965) Tagore, Pradip
    The design and construction of the motor fishing vessel Jheenga of the Deep Sea Fishing Station of the Government of India, Bombay, the areas covered and the gear used by her in 1959-63 are described. The prawn catches in relation to the total catches, and their catch rates in different months in area 18-72 in Bombay region which was fished continuously during the five years period have been studied with a view to ascertaining their seasonal abundance. The results indicate the availability of the prawns in the region for the major part of the year from March to October-November. High catches with high catch rates forming high percentage of their abundance in total catches are obtained in July to October.
  • Item
    An interpretation of the data from "The effect of mesh size on the fishing efficiency of sardine gill nets"
    (Society of Fisheries Technologists (India) Cochin, 1965) Dutt, S.
    The paper "The effect of mesh size on the fishing efficiency of sardine gill nets" [K.M. Joseph and A.V. Sebastian, Fish. Tech; 1(2), 180-182 (1964)] marks an important step in the progress of fisheries technology and biology in India.