1992

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    Copper, Chromium and Manganese in Water and Sediment of Kali Estuary, Karwar
    (Society of Fisheries Technologists (India) Cochin, 1992) Veer, M.P; Shanmukhappa, H; Bhat, U.G
    Copper, chromium and manganese concentrations ln the water and sediment samples along with some physicochemical parameters were determined at four stations of Kali estuary. 'l'he moan concentrations of Cu, Cr and Mn in water were 0.11, 0.044 and 0.327 ppm respectively. The corresponding values for sediment were 7.022, 14.13 and 185.66 ppm on dry weight basis. ln the spatial sequence, the variation in trace metals concentration of sediment exhibited a clear increasing trend from the estuarine mouth towards upstream. Range in temperature, salinity and dissolved oxygen were 27.30 - 34.(X]°C, 0.14 - 29.04%¢ and 3.88 - 6.70 ml/1 respectively.
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    Socio-economic Status of Fishermen Population in the Vicinity of Vembanad Lake
    (Society of Fisheries Technologists (India) Cochin, 1992) Kurup, B.Madhusoodana; Sebastian, M. J; Sankaran, T.M; Rabindranath, P
    17,369 households in the vicinity of the Vembanad lake belong to the fishermen with a population of 95,182. The average size of each fishermen and non-fishermen household surveyed was found to be 5.48 and 5.42 respectively. 37.65% of the numbers of each fishermen family are employed either directly in fishing (25.2%), in fishery related activities (5.54%) or in non-fishery occupation (6.9%). The numerical strength of the active fishermen of the study area has become reduced to 84% of what existed earlier. The average household annual income showed variations from region to region, with a maximum of Rs. 1558 and a minimum of Rs. 158 and the avarage annual income of the whole region thus works out to Rs.6U7. Considering the total fish produced from the lake as the source of income for the fisherfolk of the study area, the average the household income works out to be Rs.1,313.
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    Effect of Fruit Iuices with Acetic Acid on the Quality and Storage Stability of Pickled Fish
    (Society of Fisheries Technologists (India) Cochin, 1992) Behanan, Lizy; Mathew, Saleena; Sudharma, D; Mukundan, M.K; Malika, V
    The results of pickling fish with fruit juices and acetic acid in comparison with acetic acid alone are reported. Tamarind juice, lime juice and gooseberry juioe were tested for their pickling effect along with acetic acid. The biochemical and microbiological qualities of all the experimental samples remained good throughout the 6 months of study. The pickles prepared with tamarind juice along with acetic acid were superior to other pickles in colour, taste and texture. The pickle prepared using gooseberry juice and acetic acid was poor and unacceptable.
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    Preliminary Cbservations on the Lunar and Tidal Influences on the Catches of Mullets (Family- Mugilidae) by Gillnet in the Estuary of Mangalore, Karnataka
    (Society of Fisheries Technologists (India) Cochin, 1992) Ahmed, Sarifuddin; Sheshappa, D.S
    The paper deals with the lunar and tidal influences on the catches of mullets (Family- Mugilidae) by gillnets in the estuarine waters of Mangalore. The landings during fullmoon and new moon phases and during different quarters of the lunar month for a period from October 1990 to April 1991 are discussed.
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    Adoption of Quality Control Measures in Centralised and Decentralised Prawn Peeling Units - A Comparative Study
    (Society of Fisheries Technologists (India) Cochin, 1992) Gupta, Jancy
    A comparative study on the infrastructural measures adopted in centralised and non centralised prawn peeling units was carried out. lt was found that the centralised prawn peeling units had significantly high infrastructural facilities related to quality control compared to non centralised peeling Lmits. lmposition of quality control measures helped to improve the quality standards of peeling sheds considerably.
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    Radiation Preservation of Seafoods: A Case Study on Indian Mackerel
    (Society of Fisheries Technologists (India) Cochin, 1992) Venugopal, V; Nair, P.M
    Several aspects on the use of low dose gamma radiation for shelf life extension of Indian mackerel in ice have been examined to understand its amenability for the radiation process. These included, apart from determining the optimum dose (1.5 kGy) for maximum shelf life, storage studies in terms of sensory and chemical indices of freshness of the treated fish, influence of radiation on fish lipids, physico-chemical and functional properties of the fish proteins, textural attributes of the muscle and microbiological as well as wholesomeness aspects of the irradiated fish. Stability of the fish irradiated under nonpackaged condition has also been studied with a view to adopt the method for large scale processing. This article consolidates these data and points out that Indian mackerel in ice could be irradiated at landing centres to achieve quality retention and hence enhanced marketability of the catch.
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    Effect of Sublethal Concentration of Dimecron on Vitamin C Content in Tissues of Lamellidens corrianus
    (Society of Fisheries Technologists (India) Cochin, 1992) Kulkarni, A.N; Keshavan, R
    Fresh water mussel, Lumellidens cornhnus was exposed to three sublethal concentra tions (0.4x10'2,0.8x1 (TZ and 1.2x10'2%) of Dimecron, an organophosphate insecticide for 24,48,72 and 96 h. Changes in vitamin C content were observed after each exposure period. Vitamin C content was observed to decrease in hepatopancreas, gill and foot. Changes in vitamin C content are discussed in relation to exposure period and concentration of Dimecron
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    Exploited Fishery Resources of the Vembanad Lake: Fishery Based on Pokkali Fields and Polders
    (Society of Fisheries Technologists (India) Cochin, 1992) Kurup, B. Madhusoodana; Sebastian, M.J; Sankaran, T.M; Rabindranath, P
    About 2164 ha of Pokkali fields adjacent to Vembanad lake are utilized for the practloe of prawn filtration. 'The total annual production ls 1613.0 t. The seasonal production in these fields varied from 170-18(1) kg/ha and the average yield is computed as 745.4 kg/ha. 'lhecatches from Pokkali fieldscomprisedofpenaeids suchas Metapenaeus dobsoni (66.59%), Penaeus indicus (19.%), Mmonocems (523%) and fishes (8.28%).Six polders namely, Mathikayal, Marthandom, Ranimangalam, C.Block, H.Block and Chlthlra with an approximate area of 3875 ha are utilized for trapping and holding of fishes in the lower Kuttanad region. The total production is computed at 65.1 t. The catches from the polders comprised of freshwater fishes (93.5%) and palaemonid prawns (6.5%).
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    Bacterial Profile of Fresh and Spoiled Fish Mince from johnius clussumieri at Refrigerated Storage
    (Society of Fisheries Technologists (India)Cochin, 1992) Abraham, T. Jawahar; Sugumar, G; Sukumar, D; Jeyachandran, P
    Fish mince from Iohnius dussumieri was examined for the changes in the bacteriological profile in fresh and spoiled condition at refrigerated storage (4i1°C). The percentage composition of bacterial flora was found to vary with fresh fish, fresh mince and spoiled mince. Acinetobacter and Aeromonas which weredominant in fresh fish decreased drastically upon mincing, washing and storage. ln fresh mince 71.0% of the bacterial population comprised of gram positive group of which Micrococcus was the dominant. Flora of the spoiled mince was dominated by gram negative group (80.0%) comprising mainly of Vilmb followed by Pseudomonas
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    Use of Fermented Ensilage Based Diet in Enhancing the Growth of Common Carp (Cyprinus carpio var communis)
    (Society of Fisheries Technologists (India) Cochin, 1992) Manikandavelu, D; Neethiselvan; ]agatheesan, G; Sundarsanam, K
    Three isoprotein feeds containing 25% protein, namely, rice bran and groundnut oil cake (control), rice bran and fish meal, rice bran, fish meal and fermented fish ensilage were used in the feeding experiments. After 45 days of feeding trial in water recirculatory system, growth was considerably higher in fishes fed with ensilage based diet than the control and diet based on fish meal.
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    Formulation, Stability and Effect of Storage on the Quality of Three Artificial Feeds used in Carp Culture
    (Society of Fisheries Technologists (India) Cochin, 1992) Murthy, H.Shivananda; Devaraj, K.V
    Three artificial feeds namely, EF, PF and SF incorporating leaf powders of Eichhornia, Pistia and Salvinia respectively were formulated and compared with conventional feed (CF) for their water stability and keeping quality. After 1 h in water PF was found more stable than other feeds. The moisture content increased in all the feeds by 4 months storage and all the feeds showed the same keeping quality.
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    On the Durability of some Cheap Timbers in the Construction of Underwater Structures Related to Fisheries
    (Society of Fisheries Technologists (India) Cochin, 1992) Cherian, C. J; Mrithunjayan, P.S; Varma, K.K; Raman, N.N
    The present study indicates that Qjndica and S.nux-vomica are more durable than species like Mindica and hence can be used as good substitutes for conventional cheap timbers under marine conditions.
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    Quality Changes in White Sardine, Kowala cowl (Cuv.) during Frozen Storage
    (Society of Fisheries Technologists (India) Cochin, 1992) Serrao, A.D; Hiremath, G.G; Dora, K.C
    Experiments were conducted to evaluate the quality changes in white sardine Kowulu cava! (Cuv.) treated with BHA and ascorbic acid and sulphite during frozen storage at -20°C, for a period of 180 days. White sardine iced immediately after harvest and subsequently frozen within 6 to 8 h was in good condition over a period of 6 months at -20°C There was no significant difference in quality between the control, antioxidant treated and sulphite treated samples during storage.
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    Fatty Acid and Mineral Composition of Shellfish (Gelonia papua)
    (Society of Fisheries Technologists (India) Cochin, 1992) Sundarrao, K; Tinkerame, J; Kaluwin, C; Singh, K; Matsuoka, T
    The fatty acid composition of the shellfish lipid and mineral composition of its meat were analysed. Moisture, lipid, protein and ash of shellfish,Geloina papua were determined. Dry shellfish meat had 15.2% lipids of which 58.4% was nonpolar and 41 .6% phospholipids. The protein (51.2%) and ash (7.44%) contents were appreciable. The level of omega-3 polyunsaturated fatty acids was moderately high. The component minerals and heavy metals determined were Na, K, Ca, Fe, Zn, Cu, Cd, Pb, Hg, As and Se. The concentrations of essential minerals (Na, K, Ca, Mg and Fe) were significant.
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    Temperature Growth Response of Spoilage Bacteria Isolated from Indian Oil Sardine (Sardinella longiceps) Stored in Chilled Sea Water
    (Society of Fisheries Technologists (India) Cochin, 1992) Shetty, T. S; Setty, T. M .R; Ravishankar, C. N
    The optimum growth temperature of different bacterial genera, important in the spoilage of Indian oil sardine (Sardinella longiceps)stored in chilled sea water was studied. Isolates belonging to different bacterial genera, selected from plates incubated at 28 :t 2°C and 2 i 1°C, were tested for their growth response at different temperatures. The results indicated that the spoilage bacteria, irrespective of their primary isolation temperatures, showed good growth response only at the temperature ranging from 2 i- 1°C to 28 i 1°C, indicating their facultative psychrophilic nature
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    Bacterial Contamination of Mussels at Mahe Estuary, Malabar Coast
    (Society of Fisheries Technologists (India)Cochin, 1992) Gore, P.S; Raveendran, O; Iyer, T.S.G; Varma, P.R.G; Sankaranarayanan, V.N
    Mussel samples from the mussel bed and near-by market, beach sand, sediment and water from the Mahe estuary were analysed for the bacterial quality. Indicator bacteria such as Escherichia coli and faecal streptococci were isolated from water, sediment and both mussel samples especially during monsoon and postmonsoon months. Pathogens like Salmonella and Vibrio cholerae non 01 were isolated from the mussel samples. The sewage and land drainage of the region contribute to the contamination of the environment.
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    Quality Changes of Fish Sausage Incorporated with Potato Starch Powder at Room Temperature
    (Society of Fisheries Technologists (India) Cochin, 1992) Hegde, Ganapati; Chandrasekhar, T.C; Dora, K.C
    Fish sausages were prepared from the minced meat of croaker (lohnius spp.)by mixing with 7% potato starch dried powder. Control samples without potato starch dried powder were also prepared and both samples were stored at room temperature (28 i 2°C). The studies showed that the control samples remained in acceptable condition for 3 days, where as the potato starch powder added samples were in acceptable condition for 2 days only. The total plate count of control samples were lower than that of the potato starch added samples