Sex-specific spatial use of the winter foraging areas by Magellanic penguins and assessment of potential conflicts with fisheries during winter dispersal.

Magellanic penguins (Spheniscus magellanicus) disperse widely during winter and are a major consumer of marine resources over the Patagonian Shelf. Magellanic penguins were equipped with geolocators at Martillo Island in late February- early March 2017 and recaptured at the beginning of the next bre...

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Autores principales:	Samanta Dodino, Nicolás A Lois, Luciana Riccialdelli, Michael J Polito, Klemens Pütz, Andrea Raya Rey
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/77cb2f2a78e548a080b13ea05dbd6db6
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spelling	oai:doaj.org-article:77cb2f2a78e548a080b13ea05dbd6db62021-12-02T20:17:41ZSex-specific spatial use of the winter foraging areas by Magellanic penguins and assessment of potential conflicts with fisheries during winter dispersal.1932-620310.1371/journal.pone.0256339https://doaj.org/article/77cb2f2a78e548a080b13ea05dbd6db62021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0256339https://doaj.org/toc/1932-6203Magellanic penguins (Spheniscus magellanicus) disperse widely during winter and are a major consumer of marine resources over the Patagonian Shelf. Magellanic penguins were equipped with geolocators at Martillo Island in late February- early March 2017 and recaptured at the beginning of the next breeding season to recover the devices and to collect blood samples for stable carbon (δ13C) and nitrogen (δ15N) isotope analysis. We evaluated their whole winter dispersal and their trophic niche by sex during the last month of the winter dispersal. Also, we evaluated their spatial overlap with bottom trawl and shrimp fisheries using data from satellite fisheries monitoring. Penguins dispersed northwards up to 42°S and showed latitudinal spatial segregation between sexes during May to August (females were located further north than males). In contrast, during the last month of the winter dispersal females were located more southerly and showed lower trophic position than males. Also, females did not dive as deep as males during winter. We found high overlap between both fisheries and penguin's spatial use in regions with documented interaction. However, no sex-specific statistical differences with fisheries overlap were found. Our results highlight the importance of understanding the spatial domains of each sex and assessment of their potential conflicts with bottom trawl fishery and shrimp fishery during the winter period.Samanta DodinoNicolás A LoisLuciana RiccialdelliMichael J PolitoKlemens PützAndrea Raya ReyPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 8, p e0256339 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Samanta Dodino Nicolás A Lois Luciana Riccialdelli Michael J Polito Klemens Pütz Andrea Raya Rey Sex-specific spatial use of the winter foraging areas by Magellanic penguins and assessment of potential conflicts with fisheries during winter dispersal.
description	Magellanic penguins (Spheniscus magellanicus) disperse widely during winter and are a major consumer of marine resources over the Patagonian Shelf. Magellanic penguins were equipped with geolocators at Martillo Island in late February- early March 2017 and recaptured at the beginning of the next breeding season to recover the devices and to collect blood samples for stable carbon (δ13C) and nitrogen (δ15N) isotope analysis. We evaluated their whole winter dispersal and their trophic niche by sex during the last month of the winter dispersal. Also, we evaluated their spatial overlap with bottom trawl and shrimp fisheries using data from satellite fisheries monitoring. Penguins dispersed northwards up to 42°S and showed latitudinal spatial segregation between sexes during May to August (females were located further north than males). In contrast, during the last month of the winter dispersal females were located more southerly and showed lower trophic position than males. Also, females did not dive as deep as males during winter. We found high overlap between both fisheries and penguin's spatial use in regions with documented interaction. However, no sex-specific statistical differences with fisheries overlap were found. Our results highlight the importance of understanding the spatial domains of each sex and assessment of their potential conflicts with bottom trawl fishery and shrimp fishery during the winter period.
format	article
author	Samanta Dodino Nicolás A Lois Luciana Riccialdelli Michael J Polito Klemens Pütz Andrea Raya Rey
author_facet	Samanta Dodino Nicolás A Lois Luciana Riccialdelli Michael J Polito Klemens Pütz Andrea Raya Rey
author_sort	Samanta Dodino
title	Sex-specific spatial use of the winter foraging areas by Magellanic penguins and assessment of potential conflicts with fisheries during winter dispersal.
title_short	Sex-specific spatial use of the winter foraging areas by Magellanic penguins and assessment of potential conflicts with fisheries during winter dispersal.
title_full	Sex-specific spatial use of the winter foraging areas by Magellanic penguins and assessment of potential conflicts with fisheries during winter dispersal.
title_fullStr	Sex-specific spatial use of the winter foraging areas by Magellanic penguins and assessment of potential conflicts with fisheries during winter dispersal.
title_full_unstemmed	Sex-specific spatial use of the winter foraging areas by Magellanic penguins and assessment of potential conflicts with fisheries during winter dispersal.
title_sort	sex-specific spatial use of the winter foraging areas by magellanic penguins and assessment of potential conflicts with fisheries during winter dispersal.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/77cb2f2a78e548a080b13ea05dbd6db6
work_keys_str_mv	AT samantadodino sexspecificspatialuseofthewinterforagingareasbymagellanicpenguinsandassessmentofpotentialconflictswithfisheriesduringwinterdispersal AT nicolasalois sexspecificspatialuseofthewinterforagingareasbymagellanicpenguinsandassessmentofpotentialconflictswithfisheriesduringwinterdispersal AT lucianariccialdelli sexspecificspatialuseofthewinterforagingareasbymagellanicpenguinsandassessmentofpotentialconflictswithfisheriesduringwinterdispersal AT michaeljpolito sexspecificspatialuseofthewinterforagingareasbymagellanicpenguinsandassessmentofpotentialconflictswithfisheriesduringwinterdispersal AT klemensputz sexspecificspatialuseofthewinterforagingareasbymagellanicpenguinsandassessmentofpotentialconflictswithfisheriesduringwinterdispersal AT andrearayarey sexspecificspatialuseofthewinterforagingareasbymagellanicpenguinsandassessmentofpotentialconflictswithfisheriesduringwinterdispersal
_version_	1718374351377530880

Sex-specific spatial use of the winter foraging areas by Magellanic penguins and assessment of potential conflicts with fisheries during winter dispersal.

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