Incidental capture of sea turtles in the artisanal gillnet fishery in Sechura Bay, northern Peru

Gillnets are recognized globally as one of the fishing gears with the highest levels of bycatch and mortality of sea turtles. Through onboard observer monitoring from July 2013 to June 2014 we assessed the bycatch of sea turtles by an artisanal gillnet fishery operating from Sechura Bay, Peru. One h...

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Autores principales:	Pingo,Sergio, Jiménez,Astrid, Alfaro-Shigueto,Joanna, Mangel,Jeffrey C
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2017
Materias:	sea turtles CPUE gillnet bycatch Sechura Bay Peru
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2017000300010
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spelling	oai:scielo:S0718-560X20170003000102017-09-14Incidental capture of sea turtles in the artisanal gillnet fishery in Sechura Bay, northern PeruPingo,SergioJiménez,AstridAlfaro-Shigueto,JoannaMangel,Jeffrey C sea turtles CPUE gillnet bycatch Sechura Bay Peru Gillnets are recognized globally as one of the fishing gears with the highest levels of bycatch and mortality of sea turtles. Through onboard observer monitoring from July 2013 to June 2014 we assessed the bycatch of sea turtles by an artisanal gillnet fishery operating from Sechura Bay, Peru. One hundred and four sea turtles were incidentally caught in 53 observed fishing sets. The observed species composition of bycatch was green turtle Chelonia mydas (n = 100), hawksbill Eretmochelys imbricata (n = 3) and olive ridley Lepidochelys olivacea (n = 1). Bycatch occurred in 62.3% of monitored sets, with an average of 1.96 turtles caught per set. For all sea turtles combined, 28.8% of individuals were dead and 71.2% were alive at the time of retrieval. The majority of individuals caught were classified as juveniles and sub-adults, with an average carapace length (CCL) of 57.3 ± 0.9 cm for green turtles and 40.2 ± 2.4 cm for hawksbills. The mean annual catch per unit effort (CPUE) of sea turtles was 1.11 ± 0.31 turtles km-1 12 h-1), but varied by seasons. These results suggest that Sechura Bay is an important developmental habitat for juvenile and sub-adult green turtles and hawksbill turtles, but one subject to intense fishing interaction pressure. The development of monitoring programs, local awareness-raising activities, and enhanced management and protection of this critical foraging area and developmental habitat is recommended.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.45 n.3 20172017-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2017000300010en10.3856/vol45-issue3-fulltext-10
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	sea turtles CPUE gillnet bycatch Sechura Bay Peru
spellingShingle	sea turtles CPUE gillnet bycatch Sechura Bay Peru Pingo,Sergio Jiménez,Astrid Alfaro-Shigueto,Joanna Mangel,Jeffrey C Incidental capture of sea turtles in the artisanal gillnet fishery in Sechura Bay, northern Peru
description	Gillnets are recognized globally as one of the fishing gears with the highest levels of bycatch and mortality of sea turtles. Through onboard observer monitoring from July 2013 to June 2014 we assessed the bycatch of sea turtles by an artisanal gillnet fishery operating from Sechura Bay, Peru. One hundred and four sea turtles were incidentally caught in 53 observed fishing sets. The observed species composition of bycatch was green turtle Chelonia mydas (n = 100), hawksbill Eretmochelys imbricata (n = 3) and olive ridley Lepidochelys olivacea (n = 1). Bycatch occurred in 62.3% of monitored sets, with an average of 1.96 turtles caught per set. For all sea turtles combined, 28.8% of individuals were dead and 71.2% were alive at the time of retrieval. The majority of individuals caught were classified as juveniles and sub-adults, with an average carapace length (CCL) of 57.3 ± 0.9 cm for green turtles and 40.2 ± 2.4 cm for hawksbills. The mean annual catch per unit effort (CPUE) of sea turtles was 1.11 ± 0.31 turtles km-1 12 h-1), but varied by seasons. These results suggest that Sechura Bay is an important developmental habitat for juvenile and sub-adult green turtles and hawksbill turtles, but one subject to intense fishing interaction pressure. The development of monitoring programs, local awareness-raising activities, and enhanced management and protection of this critical foraging area and developmental habitat is recommended.
author	Pingo,Sergio Jiménez,Astrid Alfaro-Shigueto,Joanna Mangel,Jeffrey C
author_facet	Pingo,Sergio Jiménez,Astrid Alfaro-Shigueto,Joanna Mangel,Jeffrey C
author_sort	Pingo,Sergio
title	Incidental capture of sea turtles in the artisanal gillnet fishery in Sechura Bay, northern Peru
title_short	Incidental capture of sea turtles in the artisanal gillnet fishery in Sechura Bay, northern Peru
title_full	Incidental capture of sea turtles in the artisanal gillnet fishery in Sechura Bay, northern Peru
title_fullStr	Incidental capture of sea turtles in the artisanal gillnet fishery in Sechura Bay, northern Peru
title_full_unstemmed	Incidental capture of sea turtles in the artisanal gillnet fishery in Sechura Bay, northern Peru
title_sort	incidental capture of sea turtles in the artisanal gillnet fishery in sechura bay, northern peru
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2017000300010
work_keys_str_mv	AT pingosergio incidentalcaptureofseaturtlesintheartisanalgillnetfisheryinsechurabaynorthernperu AT jimenezastrid incidentalcaptureofseaturtlesintheartisanalgillnetfisheryinsechurabaynorthernperu AT alfaroshiguetojoanna incidentalcaptureofseaturtlesintheartisanalgillnetfisheryinsechurabaynorthernperu AT mangeljeffreyc incidentalcaptureofseaturtlesintheartisanalgillnetfisheryinsechurabaynorthernperu
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Incidental capture of sea turtles in the artisanal gillnet fishery in Sechura Bay, northern Peru

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