scholarly journals Studies on bycatch reduction of sea turtles in tuna longline fisheries

2010 ◽  
Vol 76 (4) ◽  
pp. 605-608
Author(s):  
DAISUKE SHIODE
Keyword(s):  
Sea Turtles ◽  
Bycatch Reduction ◽  
Longline Fisheries ◽  
Tuna Longline

Fishing Techniques to Reduce the Bycatch of Threatened Marine Animals

2006 ◽  
Vol 40 (3) ◽  
pp. 50-68 ◽  
Author(s):  
Timothy Werner ◽  
Scott Kraus ◽  
Andrew Read ◽  
Erika Zollett
Keyword(s):  
Research And Development ◽  
Small Mammals ◽  
Sea Turtles ◽  
Marine Species ◽  
Target Species ◽  
Marine Animals ◽  
Bycatch Reduction ◽  
Dynamic Field ◽  
Longline Fisheries

Unintended injuries and fatalities to non-target marine species—a major component of “bycatch”—is one of the principal threats to the survival of many endangered marine populations and species. This paper describes both proposed and existing fishing techniques for reducing non-target species bycatch, and reviews their focus across different fisheries and wildlife groups. The intent of this inventory was to gain a better understanding of the range of techniques available and to highlight priorities for research and development. In all, 55 techniques were identified, with the majority directed at reducing bycatch in longline fisheries, and intended to benefit primarily seabirds, sea turtles, and small mammals. Bycatch reduction is a dynamic field with many examples of effective techniques, though some underserved fisheries and wildlife groups should receive more attention.

scholarly journals Fisheries bycatch reduction within the least-cost biodiversity mitigation hierarchy: Conservatory offsets with an application to sea turtles

2018 ◽  
Author(s):  
Dale Squires ◽  
Victor Restrepo ◽  
Serge Garcia ◽  
Peter Dutton
Keyword(s):  
Sea Turtles ◽  
Sea Turtle ◽  
Impact Mitigation ◽  
Bycatch Reduction ◽  
Conservation Programme ◽  
Mitigation Hierarchy ◽  
Turtle Conservation ◽  
Sea Turtle Conservation ◽  
Fisheries Bycatch

This paper considers fisheries bycatch reduction within the least-cost biodiversity impact mitigation hierarchy. It introduces conservatory offsets that are implemented earlier in the biodiversity impact mitigation hierarchy than conventional compensatory offsets used as instruments of last resort. The paper illustrates implementation in an on-going sea turtle conservation programme by the International Seafood Sustainability Foundation.

Behavioral responses of sea turtles to lightsticks used in longline fisheries

2007 ◽  
Vol 10 (2) ◽  
pp. 176-182 ◽  
Author(s):  
J. H. Wang ◽  
L. C. Boles ◽  
B. Higgins ◽  
K. J. Lohmann
Keyword(s):  
Sea Turtles ◽  
Behavioral Responses ◽  
Longline Fisheries

Investigation of plastic debris ingestion by four species of sea turtles collected as bycatch in pelagic Pacific longline fisheries

2017 ◽  
Vol 120 (1-2) ◽  
pp. 117-125 ◽  
Author(s):  
Katharine E. Clukey ◽  
Christopher A. Lepczyk ◽  
George H. Balazs ◽  
Thierry M. Work ◽  
Jennifer M. Lynch
Keyword(s):  
Sea Turtles ◽  
Plastic Debris ◽  
Longline Fisheries

Novel Use of a Shark Model to Elicit Innate Behavioral Responses in Sea Turtles: Application to Bycatch Reduction in Commercial Fisheries

2014 ◽  
Vol 13 (2) ◽  
pp. 237-246 ◽  
Author(s):  
Angela Bostwick ◽  
Benjamin M. Higgins ◽  
André M. Landry ◽  
Marti L McCracken
Keyword(s):  
Sea Turtles ◽  
Behavioral Responses ◽  
Commercial Fisheries ◽  
Bycatch Reduction

scholarly journals KOMPOSISI HASIL TANGKAPAN SAMPINGAN DAN IKAN TARGET PERIKANAN RAWAI TUNA BAGIAN TIMUR SAMUDERA HINDIA (Catch Composition of By-Catch and Target Species on Tuna Longline Fisheries in Eastern Indian Ocean)

2016 ◽  
Vol 5 (2) ◽  
pp. 119
Author(s):  
Dian Novianto ◽  
Budi Nugraha
Keyword(s):  
Indian Ocean ◽  
Eastern Indian Ocean ◽  
Target Species ◽  
Olive Ridley ◽  
Lepidochelys Olivacea ◽  
Bony Fishes ◽  
By Catch ◽  
Catch Composition ◽  
Longline Fisheries ◽  
Tuna Longline

<p>ABSTRACT<br />Tuna longline operations also capture other than tuna species are known as by-catch are caught accidentally due to the ecological linkages. This study aims to identify the species composition of by-catch and try to analyzed the interaction of non-target species with tuna species as the target species on tuna longline fishery in the eastern Indian Ocean. Surveillance was conducted on February 2013-January 2014 by following 7 commercial tuna longliners vessel with fishing operations for 226 days. The results showed there were 36 species, where the target species consists of 4 tuna species (26.11%) and 32 by-catch species consist of by-product (24.08%) and that is not utilized (discards, 49.74%). The Results of by-catch are consists of a lancetfish (Alepisaurus spp., 42.87%), pelagic stingray (Pteroplatytrygon violacea, 22.05%), escolar (Lepidocybium flavobrunneum, 10.22%) and sickle pomfret (Taractichthys steindachneri, 8.21%), while for other species consists of are billfishes (6 species), shark and rays species (10 species), bony fishes (11 species) and turtles (olive ridley).</p><p>Keywords: by-catch, tuna longline, Indian ocean</p><p>-------</p><p>ABSTRAK</p><p>Pengoperasian rawai tuna juga menangkap jenis-jenis lain selain tuna yang dikenal dengan sebutan hasil tangkap sampingan (HTS atau by-catch) yang tertangkap secara tidak sengaja dikarenakan adanya keterkaitan secara ekologi. Penelitian ini bertujuan untuk mengidentifikasi komposisi jenis hasil tangkap sampingan dan mencoba menganalisis hubungan interaksi ikan hasil tangkap sampingan dengan ikan tuna sebagai tangkapan utama (target species) pada perikanan rawai tuna di bagian timur Samudera Hindia. Pengamatan dilakukan pada bulan Februari 2013-Januari 2014 dengan mengikuti kegiatan operasi penangkapan 7 kapal rawai tuna komersial dengan selama 226 hari operasi penangkapan. Hasil penelitian menunjukkanterdapat 35 jenis ikan dan 1 jenis penyu dimana target utama terdiri dari 4 jenis ikan (26,11%) dan hasil tangkapan sampingan 31 jenis ikan dan 1 jenis penyu dimana yang dimanfaatkan (by-product) (24,08%) dan yang tidak dimanfaatkan (discards) (49,74%). Hasil tangkapan sampingan berturut-turut didominasi oleh ikan naga (Alepisaurus spp., 42,87%), pari lemer (Pteroplatytrygon violacea, 22,05%), ikan setan (Lepidocybium flavobrunneum, 10,22%) dan bawal sabit (Taractichthys steindachneri, 8,21%), selanjutnya juga tertangkap jenis paruh panjang (billfish, 6 spesies), jenis cucut dan pari (elasmobranchii, 10 spesies), jenis teleostei (bony fishes,11 spesies) dan penyu lekang (Lepidochelys olivacea).</p><p><br />Kata kunci: Hasil tangkap sampingan, rawai tuna, Samudera Hindia</p>

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