FT Vol.58(2)
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- ItemCetacean Fishery Interaction during operation of major Fishing Systems of India(Society of Fisheries Technologists (India), 2021-09-16)Cetacean interaction with fishing gear has been reported widely around the globe. This study is aimed at finding out the fishery most prone to cetacean attack along the Indian coast, and to identify the species causing the attacks, the extent of damage to fishing gear, the seasonal variation and catch loss in different fisheries and suggest mitigation measures. This was assessed by conducting face to face interviews with the crew and owners of the fishing vessels from 20 major harbours along Indian coast. The results of the study show that cetacean fishery interactions are frequent in all type of fishing gears operated in the country. Small gillnets that operate near the shore are most prone to cetacean attacks. Gear damage and depredation by cetacean and non-cetacean species cause economic loss to the tune of Rs. 0.5 – 2.0 lakhs per incident in gillnet and purse seine/ ring seine fishery. The study shows that about 15.3% of respondents reported incidental bycatch of cetaceans, mainly in gillnets, purse seines and trawls. The number of interactions are found to be maximum during pre-monsoon season. It has also been observed that gillnets and purse seine/ ring seine are the most economically affected fisheries. Fishers employ mitigation measures like scaring away the animals or delaying fishing. The use of acoustic pingers can be considered as a management option in India.
- ItemGovernability Assessment Framework as a tool forFisheries Management in Small and Medium Reservoirsin India(Society of Fisheries Technologists (India), 2021-09-16)Reservoirs are important impounded water bodiesthat serve multiple primary objectives like irrigationand power generation besides supporting othereconomic activities like fisheries and tourism. Thiscommunication discusses a governability assess-ment framework that can be used to assess andunderstand the various competing systems in areservoir to achieve better management strategiesfor sustained fisheries. Fisheries is often an ancillarybenefit activity in reservoirs and the agenciescontrolling fisheries are often dependent on otheractors for its regulation. Decisions by the ownerDepartments have an impact on fishing activitiesand management of fishery is thus complex, andsynergy between the agencies is primary factor forbetter management that supports livelihoods, whichcan be complimented with technical solutions tofishery related issues. The two steps in a four stepassessment framework adapted is being discussedwhere the fisheries governance problems in reser-voirs and the system properties- system to begoverned; governing system and governing interac-tions, are presented.
- ItemCrustacean Allergens and Impact of different ProcessingTechniques on its Allergenicity: A Review(Society of Fisheries Technologists (India), 2021-04-21)Allergenicity to crustaceans is a global food safetyconcern in spite of acceptance of delicacies likeshrimps, crabs and lobsters. They are also theleading causative of food induced anaphylaxis.Major percentage of allergic reactions are triggeredby allergic protein, tropomyosin and the others suchas arginine kinase, sarcoplasmic calcium-bindingprotein, myosin light chain, troponin C, hemocyaninare also involved. Prevalence of crustaceanallergenicty, allergens reported in different crusta-ceans and their cross reactivities are discussed inthis reviews. Besides the effect of various thermaland non-thermal processing techniques in managingthe crustacean allergen is also discussed. In com-parison to the enhanced allergenicity effects re-ported by thermal techniques, novel non-thermaltechniques like high pressure processing, gammairradiation, enzymic hydrolysis, high intensity ultra-sound, pulsed ultraviolet light etc have promisingeffects on allergenicity reduction by structuralmodifications in the proteins. The advantages ofcombined treatments in hurdle technology ap-proaches can make effective mitigation of crustaceanallergenicity and can be suitably optimized forhypoallergic food development.
- ItemIce Utilization in the Fisheries Sector of Kerala(Society of Fisheries Technologists (India), 2021)India is one of the top fish producing countries in the world, with its current fish production at 11.42 million mt (Fig. 1). The 1990’s saw a boost in aquaculture production from India (Fig. 2) increasing the total fish production manifold from a mere 75,000 MT in the 1950-51 to 4.87 lakh and presently the country stands third in fish production and second in aquaculture production in the world.
- ItemNanocellulose incorporated Polylactic Acid Films for chilled preservation of Indian Anchovy (Stolephorus indicus) (van Hasselt, 1823)(Society of Fisheries Technologists (India), 2021)Polylactic acid (PLA) nanocellulose (NC) films were fabricated by compounding different levels (1%, 2% and 3%) of nanocellulose into the PLA matrix to improve the mechanical properties. The mixed PLA and NC of different percentage were extruded into tubular blown films using a co-rotating extruder. The films were analysed for different mechanical and physical properties. The addition of nanocellulose significantly improved the tensile strength and the heat sealing properties of the films. The water vapour transmission rate did not show much difference between the different levels of NC filler. The surface morphology of the obtained films was characterised by scanning electron microscopy (SEM). The compositional analysis was done by Fourier transform infrared spectroscopy (FTIR) and it revealed that nanocellulose interacted with PLA. Stolephorus indicus (anchovy) (van Hasselt, 1823) were packed in different PLA/NC films and kept in chilled condition for 20 days to evaluate the preservative effect. Biochemical parameters such as peroxide value, free fatty acid, trimethylamine, total volatile base nitrogen and microbial parameter such as total plate count were carried out during the storage period. The results proved that the fish samples packed in different PLA/nanocellulose films had better shelf life compared to neat PLA and LDPE films during the chilled storage.