Bycatch of sharks, marine mammals and seabirds in Indonesian Tuna Longline Fishery

Zainudin IM, Patria MP, Rahardjo P, Yasman, Gautama DA, Prawira WT. 2017. Bycatch of sharks, marine mammals and seabirds in Indonesian Tuna Longline Fishery. Biodiversitas 18: 1179-1189. Bycatch in longline fishery is recorded to be one of the major factors defining the declined populations of endan...

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Autores principales:	IMAM MUSTHOFA ZAINUDIN, MUFTI PETALA PATRIA, PRIYANTO RAHARDJO, YASMAN YASMAN, DWI ARIYOGA GAUTAMA, WAHYU TEGUH PRAWIRA
Formato:	article
Lenguaje:	EN
Publicado:	MBI & UNS Solo 2017
Materias:	bycatch hook rate indonesia tuna longline mitigation effort Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/d0b4acf18c3247e3936f1ed955287645
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spelling	oai:doaj.org-article:d0b4acf18c3247e3936f1ed9552876452021-11-16T13:56:34ZBycatch of sharks, marine mammals and seabirds in Indonesian Tuna Longline Fishery1412-033X2085-472210.13057/biodiv/d180341https://doaj.org/article/d0b4acf18c3247e3936f1ed9552876452017-07-01T00:00:00Zhttps://smujo.id/biodiv/article/view/2041https://doaj.org/toc/1412-033Xhttps://doaj.org/toc/2085-4722Zainudin IM, Patria MP, Rahardjo P, Yasman, Gautama DA, Prawira WT. 2017. Bycatch of sharks, marine mammals and seabirds in Indonesian Tuna Longline Fishery. Biodiversitas 18: 1179-1189. Bycatch in longline fishery is recorded to be one of the major factors defining the declined populations of endangered marine species worldwide. This research aimed to identify bycatch level of sharks, marine mammals and seabirds as well as to pinpoint the mitigation options in Indonesian tuna longline fishery. In this study, a total of 8,564,858 hooks were observed from 5,622 gear settings in Indonesian tuna longline fishery based in two major fishing ports, namely Bitung Fishing Port-North Sulawesi and Benoa Port-Bali from May 2006 to June 2014. The results suggest that the best hook rate per thousand hooks in Indonesian tuna longline fisheries for shark bycatch was 0.2446, followed by 0.0030 for seabird bycatch, 0.0021 for dolphin bycatch and 0.0009 for whale bycatch. Seabirds largely acquired in the dead condition while the other species were found still alive (sharks and marine mammals). Bycatch of seabirds only occured in the vessels based in Benoa Bali, and the correlation value (R2) of sharks and seabirds caught at night time was low while for marine mammals was very strong. Deep setting system of fishing gears and night setting also proved to be more effective to reduce bycatch of those critical marine species.IMAM MUSTHOFA ZAINUDINMUFTI PETALA PATRIAPRIYANTO RAHARDJOYASMAN YASMANDWI ARIYOGA GAUTAMAWAHYU TEGUH PRAWIRAMBI & UNS Soloarticlebycatchhook rateindonesiatuna longlinemitigation effortBiology (General)QH301-705.5ENBiodiversitas, Vol 18, Iss 3, Pp 1179-1189 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	bycatch hook rate indonesia tuna longline mitigation effort Biology (General) QH301-705.5
spellingShingle	bycatch hook rate indonesia tuna longline mitigation effort Biology (General) QH301-705.5 IMAM MUSTHOFA ZAINUDIN MUFTI PETALA PATRIA PRIYANTO RAHARDJO YASMAN YASMAN DWI ARIYOGA GAUTAMA WAHYU TEGUH PRAWIRA Bycatch of sharks, marine mammals and seabirds in Indonesian Tuna Longline Fishery
description	Zainudin IM, Patria MP, Rahardjo P, Yasman, Gautama DA, Prawira WT. 2017. Bycatch of sharks, marine mammals and seabirds in Indonesian Tuna Longline Fishery. Biodiversitas 18: 1179-1189. Bycatch in longline fishery is recorded to be one of the major factors defining the declined populations of endangered marine species worldwide. This research aimed to identify bycatch level of sharks, marine mammals and seabirds as well as to pinpoint the mitigation options in Indonesian tuna longline fishery. In this study, a total of 8,564,858 hooks were observed from 5,622 gear settings in Indonesian tuna longline fishery based in two major fishing ports, namely Bitung Fishing Port-North Sulawesi and Benoa Port-Bali from May 2006 to June 2014. The results suggest that the best hook rate per thousand hooks in Indonesian tuna longline fisheries for shark bycatch was 0.2446, followed by 0.0030 for seabird bycatch, 0.0021 for dolphin bycatch and 0.0009 for whale bycatch. Seabirds largely acquired in the dead condition while the other species were found still alive (sharks and marine mammals). Bycatch of seabirds only occured in the vessels based in Benoa Bali, and the correlation value (R2) of sharks and seabirds caught at night time was low while for marine mammals was very strong. Deep setting system of fishing gears and night setting also proved to be more effective to reduce bycatch of those critical marine species.
format	article
author	IMAM MUSTHOFA ZAINUDIN MUFTI PETALA PATRIA PRIYANTO RAHARDJO YASMAN YASMAN DWI ARIYOGA GAUTAMA WAHYU TEGUH PRAWIRA
author_facet	IMAM MUSTHOFA ZAINUDIN MUFTI PETALA PATRIA PRIYANTO RAHARDJO YASMAN YASMAN DWI ARIYOGA GAUTAMA WAHYU TEGUH PRAWIRA
author_sort	IMAM MUSTHOFA ZAINUDIN
title	Bycatch of sharks, marine mammals and seabirds in Indonesian Tuna Longline Fishery
title_short	Bycatch of sharks, marine mammals and seabirds in Indonesian Tuna Longline Fishery
title_full	Bycatch of sharks, marine mammals and seabirds in Indonesian Tuna Longline Fishery
title_fullStr	Bycatch of sharks, marine mammals and seabirds in Indonesian Tuna Longline Fishery
title_full_unstemmed	Bycatch of sharks, marine mammals and seabirds in Indonesian Tuna Longline Fishery
title_sort	bycatch of sharks, marine mammals and seabirds in indonesian tuna longline fishery
publisher	MBI & UNS Solo
publishDate	2017
url	https://doaj.org/article/d0b4acf18c3247e3936f1ed955287645
work_keys_str_mv	AT imammusthofazainudin bycatchofsharksmarinemammalsandseabirdsinindonesiantunalonglinefishery AT muftipetalapatria bycatchofsharksmarinemammalsandseabirdsinindonesiantunalonglinefishery AT priyantorahardjo bycatchofsharksmarinemammalsandseabirdsinindonesiantunalonglinefishery AT yasmanyasman bycatchofsharksmarinemammalsandseabirdsinindonesiantunalonglinefishery AT dwiariyogagautama bycatchofsharksmarinemammalsandseabirdsinindonesiantunalonglinefishery AT wahyuteguhprawira bycatchofsharksmarinemammalsandseabirdsinindonesiantunalonglinefishery
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Bycatch of sharks, marine mammals and seabirds in Indonesian Tuna Longline Fishery

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