14,692 research outputs found

    Reducing Prawn-trawl Bycatch in Australia: An Overview and an Example from Queensland

    Get PDF
    Prawn trawling occurs in most states of Australia in tropical, subtropical, and temperate waters. Bycatch occurs to some degree in all Australian trawl fisheries, and there is pressure to reduce the levels of trawl fishery bycatch. This paper gives a brief overview of the bycatch issues and technological solutions that have been evaluated or adopted in Australian prawn-trawl fi sheries. Turtle excluder devices (TED’s) and bycatch reduction devices (BRD’s) are the principal solutions to bycatch in Australian prawn-trawl fisheries. This paper focuses on a major prawn-trawl fishery of northeastern Australia, and the results of commercial use of TED’s and BRD’s in the Queensland east coast trawl fishery are presented. New industry designs are described, and the status of TED and BRD adoption and regulation is summarized. The implementation of technological solutions to reduce fishery bycatch is assumed generally to assist prawn-trawl fisheries within Australia in achieving legislative requirements for minimal environmental impact and ecological sustainable development

    Inland prawn fisheries of India and their development

    Get PDF
    The magnitude and disposition of the inland prawn fisheries resources of the country have been described. The lack of adequate knowledge of the capture fisheries resources has been pointed out and the necessity for an organised survey of the resources and research to formulate measures for their proper management emphasised. The existing methods of prawn farming in the country have been described and the need for research for maximising yields from culture fisheries of prawn has been highlighted. Measures for immediate development of prawn fisheries of the country have also been discussed

    BENEFITS OF MANGROVE MANAGEMENT FOR PRAWN FISHING AND TIMBER PRODUCTION

    Get PDF
    Integrated fisheries resource management is absolutely needed to achieve optimal result and sustainable utilization. This research aims to analyze the benefit of mangrove forest management for prawn fishing and mangrove timber production in Segara Anakan, southern coast of Central Java. The information concerning mangrove coverage changes was achieved from a satellite imagery (Landsat) from 2002 to 2009, while prawn resources stock assessment was analyzed through production surplus method and economic analysis of prawn fishing. The results show that the condition of mangrove ecosystem in Segara Anakan since 2002 to 2009 had been decreasing with average decrease rate of 10,28% each year which caused to prawn abundance. Utilization of mangrove wood inwhich aged above 20 years would give more benefit to prawn fishing and timber production. The additional economic value for prawn fishing was approximately 3,964 times of cropped woods. Prawn fisheries resource management in Cilacap coastal waters could be done by management of fishing effort and rehabilitation of mangrove forest in Cilacap region and surrounding areas as well especially in Segara Anakan Lagoon

    Management plan Kimberley Prawn Fishery.

    Get PDF
    This report outlines a management plan for the Kimberley Prawn Fishery which operates in Western Australia coastal waters of the Indian Ocean and Timor Sea, off the Kimberley coastline lying east of Koolan Island, 1230 45\u27 east longitude and west of Cape Londondery, 1260 58\u27 east longitude. Kimberley Prawn Fishery access restrictions were first specified in Western Australian Fisheries Notice No. 170 published in Governement Gazette No. 2 of 4 January, 1985. Present exploitation is low and access is limited to Western Australian Fishing Boat licences endorsed with transferable access to the Kimberley Prawn Fishery (9 trawlers) Trawlers with access to either the Shark Bay, Exmouth Gulf or Nickol Bay Limited Entry Prawn Fisheries (57 trawlers) Trawlers with Western Australian Fishing Boat Licences assigned with a Class B or Class C unit in accordance with the Northern Prawn Fishery Management Plan (107 trawlers) Representing a total of 173 trawlers

    Extension service for prawn farming

    Get PDF
    The technology of prawn culture in India is still traditional and extensive called trapping-cum-holding in brackish water ponds, but adoption of Improved extensive prawn culture technology Is claimed to be picking up fast In several places notably In West Bengal, Kerala, Andhra Pradesh and Orissa. The production from such culture practices is estimated at 15000-17000 tons/year, accounting for about 5% of the total prawn production In India the technology of scientific prawn culture is now available. Though steps are being taken to motivate, and encourage the fish farmers to take up prawn culture on scientific lines to increase their Income, lack of an appropriate extension network Is felt to be a major handicap In the field. This paper attempts to review the various extension services available for taking up prawn culture by the fish farmers. Identifies the pitfalls and proposes a working fisheries extension programme for prawn culture In Indi

    Handbook of Marine Prawns of India

    Get PDF
    Central Marine Fisheries Research Institute realized the importance of crustaceans as an exportable resource and started concentrating on prawn fisheries research and development since 1960s. CMFRI conducted a 'Symposium on Crustacea' in collaboration with the Marine Biological Association of India (MBAI) in 1965 to get an idea on the existing information on the biology and fisheries of Crustaceans. The Institute also published 'Bulletin 14' entitled 'Prawn Fisheries of India' in 1969 which brought to light the complete information on taxonomy, biology and fisheries of the commercial species of prawns in general and penaeid prawns in particular. Since then many studies were conducted on various aspects of prawn fisheries during the last 40 years. The prawn landings increased from 62,767 t forming 9.2% of the total marine fish landings in 1961 to 4,60,028 t forming 12% of the marine fish landings in 2011. The sea food exports gradually increased from 15,732 t valued at Rs.3.92 crores in 1961-62 to 6,12,641 t valued at Rs.8363.53 crores by 2006-07 and to 8,13,091 t valued at Rs. 12,901.47 crores in 2010-2011. Frozen shrimp continued to be the major export item accounting for 51.35% of the total foreign exchange realizations during 2010-11

    Prawn fisheries of important brackishwater and estuarine systems in India

    Get PDF
    Most of the penaeid prawns spend tlieir Juvenile phase in the shallow estuarine and bracklshwater regions, supporting rich fisheries in this ecosysterh. Penaeus monodon, P. indicus, Metapenaeus dobsoni, M. monoceros and M. brevlcornis are the dominant species contributing to the rich prawn fishery resources of this ecosystem. Both abiotic and biotic factors play a major role in determining the success of the fishery. Small country crafts and different types of bag nets, traps etc. are used for the exploitation of the Juvenile prawn resources. Salient features of the prawn fisheries of the major estuarine and backwater systems along both the east and west coasts of our country are presented here

    The Effectiveness of the Jones/Davis Type By-Catch Reduction Device (BRD) to Reduce Unintended Catch of Trawl Fisheries

    Get PDF
    Reduction by-catch of commercial fishing are become major concern, especially prawn trawl fisheries. By-catch reduction device developed to address that issue. However, there were trade-off problems regarding the implementation the BRD in trawl fisheries that is the effectiveness of the BRD. The performance of BRD was questionable on the effectiveness in term of reduction the by-catch and maintenance amount of target catch. This essay examines the performance of Jones-Davis type BRD to reduce by-catch and its impact to prawn catch in Cleveland Bay. An experimental fishing has been conducted (control-net and BRD-net; Pair-trawl method) to assess the effectiveness of by-catch reduction which examined with Wilcoxon Rank Test. The result shows that trawl equipped by BRD significantly reduce by-catch by 22.2% (Z = -4.6406, p-value = 0.0001) and retained prawn catch which was no significant difference inprawn catch between BRD and control nets (Z = -1.9218, p-value = 0.0546). Therefore, that evidence could be argued to convince about the BRD benefits to commercial prawn trawl fisheries
    corecore