FT Vol.51(2)

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    Composition, textural quality and gel strength of surimi prepared from striped catfish (Pangasianodon hypophthalmus, Souvage, 1878)
    (Society of Fisheries Technologists (India), Cochin, India, 2014) Tanuja, S.; Viji, P.; Zynudheen, A.A.; Ninan, G.; Joshy, C.G.
    Surimi was prepared from the meat of striped catfish Pangasianodon hypophthalmus using single wash and double wash method and the composition, gel strength and textural properties were compared. Crude protein and fat content of double wash surimi was significantly low (p<0.05). Both single wash and double wash surimi gels exhibited high expressible drip and low water holding capacity with double wash surimi gel showing significantly higher values (p<0.05). The gel strength, and textural parameter like hardness, and stiffness were significantly (p<0.05) higher for single wash surimi. The additional washing resulted in a significant decrease (p<0.05) in total pigment content of the surimi.
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    Growth Performance and Economic Analysis of Indian Major Carps and Tilapia in Rainwater Ponds
    (Society of Fisheries Technologists (India)Cochin, 2014) Pandey, Pramod K.; Sethi, Laxmi N.; Pholane, Limbraj P.; Panda, Sudhindra N.; Pandey, Vinay K.; Biswas, Sagor; Soupir, Michelle
    Enhancing water resources is crucially important for improving food production in rainfed regions. The income of rural people in these regions is mainly tied with water availability. One option is disseminating rainwater harvesting for conserving rainwater and utilizing it for food production. Here we propose a rainwater harvesting method, which helps to conserve rainwater in the rainy season, provide water storage for rearing fish and facilitate supplemental irrigation to crops in the dry season. To verify the suitability of rainwater harvesting approach for improving food production and rural income, here we conducted a field study, which involved designing rainwater harvesting ponds (lined and unlined), storing rainwater and water recycling for irrigating crops. The growth of Catla catla, Labeo rohita, Cirrhinus mrigala, and tilapia in lined and unlined rainwater harvesting ponds was assessed and the resulting benefits were calculated under various scenarios. Water quality measurements showed the suitability of water stored in both rainwater harvesting ponds for fish culture. The Specific Growth Rates (SGR) of all the species in the lined ponds were greater than the unlined ponds except SGR of C. mrigala. Results show that the fish culture in the ponds improved the annual net benefit of rainwater harvesting systems. For
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    Impact of Aqua Societies on Shrimp Farming in Andhra Pradesh, India
    (Society of Fisheries Technologists (India)Cochin, 2014) Koteswari, N.; Immanuel, Sheela; Cyril, A. R. Leo; Viswanatha, B. S.
    This paper examines the impact of aqua societies on shrimp farmers in Andhra Pradesh, India. The study utilized primary data obtained from 180 shrimp farmers residing in six districts and examined the impact of aqua societies on shrimp farmers. The impact of aqua societies was analysed in terms of enhanced yield, reduced disease occurrences, increased income, employment, education, standard of living and reduced health risks. Analysis showed significant differences in the impact of aqua societies on shrimp farmers after formation of aqua societies in six districts. Lack of good quality seed, marketability and cold storage facilities were some of the constraints faced by the farmers. This paper highlights the need for broad stakeholder involvement and for providing the right incentives to producers such as reduced costs, improved production, access to information and diagnostic services and higher market price for BMP (Best Management Practices) products. This aqua society model is good to overcome the risk factors in shrimp farming and the model could be made sustainable with gover
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    Longline fishing for high value species off Southern India with special reference to structural and operational changes
    (Society of Fisheries Technologists (India), Cochin, India, 2014) Vipin, P.M.; Ravi, R.; Pravin, P.; Thomas, S.N.; Edwin, L.
    Longline fishing is a fuel efficient and selective fishing method with low environmental impact. The longline fishing methods of Kerala, Tamil Nadu and Andhra Pradesh are discussed in this paper, based on the studies conducted during 2012-2013. Mechanized vessels of LOA 9.5 to 20 m with 97-250 hp engines are used for longline fishing in this region. Fishing is normally multiday extending from 5 to 40 days. The longline vessel has a crew complement of 6 to 15. Some of the vessels use mechanical or hydraulic winches for hauling the line. The total length of the main line ranged from 15 - 25 km. Longline vessels target commercially important high value species like tuna, marlin, sailfish, seerfish, shark and rays. Structural and operational changes in longline fishing which happened during the last few decades have also been documented
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    Comparison of collagen extracted from skin of double spotted queenfish and Malabar grouper
    (Society of Fisheries Technologists (India), Cochin, India, 2014) Hema, G.S.; Shyni, K.; Mathew, S.; Ninan, G.; Joshy, C.G.
    Acid soluble collagen (ASC) and pepsin digestible collagen (PDC) from the skin of double-spotted queenfish (Scomberoides lysan) and Malabar grouper (Epinephelus malabaricus), were isolated and characterized. On wet weight basis, the yields of ASC and PDC from queen fish and grouper were 7.82, 3.92, 12.5 and 6.49% respectively. Amino acid analysis revealed that they contained glycine as a major amino acid with high contents of alanine, proline and hydroxyproline. Based on sodium dodecyl sulfate polyacrylamide gel electrophoretic patterns and subunit compositions, all were identified to be type 1 collagens when compared with calf skin type 1 collagen. a1, a2 and b chains were the major components of the presently isolated collagens. While comparing these two species, queen fish skin had good yield of collagen which could be served as an alternative source of collagen for different applications.
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    A Modified Method for the Preparation of Sukati Mas (A Traditional Fish Powder of North-east India) from Muwa (Amblypharyngodon mola)
    (Society of Fisheries Technologists (India)Cochin, 2014) Barman, Pratul; Muzaddadi, Armaan Ullah; Goswami, Umesh Chandra; Mandal, Sagar Chardra
    Traditional method of sukati mas preparation was documented by conducting a study in Majuli (the biggest river island of the river Brahmaputra, Assam). Sukati mas was prepared by modified method (SM) using single fish muwa (Amblypharyngodon mola). The biochemical properties of SM were investigated and compared with the product prepared by traditional method (ST). Mean values of different parameters of ST and SM differed significantly (p<0.05) except pH. ST and SM contained moisture 3.45 and 2.34, protein 69.83 and 77.19, lipids 4.04 and 1.13, ash 20.65 and 17.82, salt 2.12 and 1.32% respectively. Similarly they contained minerals including Ca 1543 and 3469, P 1811 and 3318, Fe 4.62 and 7.23, Na 77.6 and 122.5, K 624 and 777 mg%, respectively. Average pH was 7.23 in ST and 7.07 in SM. During 5 months storage, moisture, protein, lipids, ash, pH, TVBN and PV values in ST changed significantly (p<0.05), except salt content. Similarly in SM, all these parameters except protein and ash content, changed significantly (p<0.05). While the spoilage indices including TBV-N and PV increased significantly (p<0.05), their values remained within the acceptable limits in both the products. Based on sensory analysis, the panel of 10 judges preferred SM in terms of aesthetic appearance, smell, flavour and taste and the scores significantly differed (p<0.05) from the scores of ST
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    Fishers’ Knowledge on Marine Fisheries Management and Conservation
    (Society of Fisheries Technologists (India)Cochin, 2014) Shankar, S. Sabari; Anand, G. Ajay; Immanuel, Sheela; Vennila, A.
    Marine fishers play an important role in the management of marine resources. Hence, there is a need to analyse the fishers’ knowledge level in relation to marine fisheries resource management and conservation. The present study was undertaken in selected fishing villages of Kanyakumari district of Tamil Nadu. The ‘Teacher made test’ was constructed and used for the assessment of fishers’ knowledge. More than 60% of the respondents had medium level of knowledge on marine fisheries management and conservation, marine policies and regulatory measures and mariculture practices. Fishers’ knowledge on marine parks and sanctuaries, community based approach, oil spillage, installation of artificial reefs, mesh size for catching shrimps and catching of brood fishes was found to be low. Fishers had medium level of knowledge on issues like over exploitation, mangrove destruction, marine pollution, and mesh size regulations, mechanisation of boats, indiscriminate fishing methods and fishing with nets of reduced mesh size. These areas need to be taken into account for enhancing the fishers’ knowledge level for increasing