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Research and Engineering Appropriate BRDs for developing the Eco-friendly Trawl Net in Indonesia. Final Report.







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    Advances and best practices in bycatch reduction in tropical shrimp-trawl fisheries 2021
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    This technical report describes efforts to mitigate bycatch through gear modifications and adaptations in the tropical shrimp-trawl fisheries of over 30 countries. It provides a summary of efforts by each country and then synthesizes them to identify and describe best practice. A best practice in bycatch reduction is the application or adoption of appropriate, recognized approaches to modifying fishing gear, with the objective of reducing bycatch to the greatest extent practicable. This information serves as a benchmark to identify countries that are taking appropriate steps to reduce bycatch and those that are not. It also provides context from which the outcomes of research on bycatch reduction can be evaluated and compared, including the identification of effective bycatch reduction devices, and serves to identify future research priorities. In the context of this report, best practice includes the installation and use of TEDs and BRDs that are optimally rigged and operated so as to reduce bycatch. It also includes the application of appropriate regulations to ensure effective performance, as well as the introduction of effective outreach and extension programmes to enhance and sustain best practice to reduce bycatch.
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    GFCM - Report of the Workshop on Standardization of Selectivity Methods Applied to Trawling in the / CGPM - Rapport de l’atelier sur la standardisation des méthodes de sélectivité appliquées au chalutage en 2007
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    A General Fisheries Commission for the Mediterranean (GFCM) Workshop on Standardization of Selectivity Methods Applied to Trawling in the Mediterranean Sea has been organized by the French Research Institute for the Exploitation of the Sea (IFREMER) with the participation of FAO regional projects, COPEMED (Cooperation Networks to facilitate Coordination to Support Fisheries Management in the Western and Central Mediterranean) and ADRIAMED (Scientific Cooperation to Support Responsi ble Fisheries in the Adriatic Sea). The examination of different selectivity studies presented to the workshop showed the technical and practical difficulties in defining a single method to apply in the various situations encountered in the Mediterranean, but the need for using common rules to facilitate the exchange and the comparison of the results was underlined. Fish behaviour, survival after escapement and experimental reliability of statistical methods were discussed. The wor kshop acknowledged that square meshes are more selective than diamond meshes. It further stressed the need to investigate the selectivity impacts of square meshes on various species of different shapes (e.g. flatfishes) and to evaluate selectivity in economical terms. The workshop recommended the realization of a practical guide for selectivity studies in the Mediterranean and the establishment of a common selectivity database including both technical elements of the experimentatio ns and parameters of selectivity obtained. The need of establishing a network of fishing technologists including the fishing sector representatives was also expressed.
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    Studies on Mesh Selectivity And Performance Of The New Fish-Cum-Prawn Trawl at Pesalai, Sri Lanka - BOBP/MIS/04 1986
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    In 1984, the small-scale fisheries project of the Bay of Bengal Programme (BOBP) introduced a new design of prawn-cum-trawl net in Pesalai, Sri Lanka, to help augment the catches of finfish and shellfish in the region. As part of this pilot activity, the project also conducted a management study: to find out the optimum mesh size of the codend of the trawl. Toward this end, some experiments were conducted off Pesalai during April and July 1984. This paper discusses and analyzes the findings of t hese experiments. Three commercial prawn trawlers of the same class, and three fish-cum-prawn trawls of the same dimension and construction, were employed for the mesh selectivity experiments. A scientist from NARA (National Aquatic Resources Agency), Colombo, carried out the study, in cooperation with Mr. G. Pajot, BOBP Senior Fishing Technologist, and Dr. K. Sivasubramaniam, Senior Fisheries Biologist. The author thanks these two Scientists for their advice and help. He also thanks Mr. M.G.K . Gunawardane, Research Assistant, Mr. W.G. Sirisena, Lab Attendant, NARA, and Mr. M.J.M. Soosai, Gear Instructor, Ministry of Fisheries, Sri Lanka, for their assistance. He is grateful to Dr. S. Garcia of the FAO, Rome, for his comments on the paper. The small-scale fisheries project of the Bay of Bengal Programme is funded by SIDA (Swedish International Development Authority) and executed by the FAO (Food & Agriculture Organization of the United Nations). The project seeks to develop, demons trate and promote technologies and methodologies to improve the conditions of small-scale fisher-folk. The project covers five countries in the region - Bangladesh, India, Malaysia, Sri Lanka and Thailand.

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