Foraging dive frequency predicts body mass gain in the Adélie penguin

Abstract Quantifying food intake in wild animals is crucial to many ecological and evolutionary questions, yet it can be very challenging, especially in the marine environment. Because foraging behavior can be inferred from dive recordings in many marine creatures, we hypothesized that specific beha...

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Autores principales:	Amélie Lescroël, Annie Schmidt, Megan Elrod, David G. Ainley, Grant Ballard
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2f27ec56e8454fe790c3d34752664323
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spelling	oai:doaj.org-article:2f27ec56e8454fe790c3d347526643232021-11-28T12:16:51ZForaging dive frequency predicts body mass gain in the Adélie penguin10.1038/s41598-021-02451-42045-2322https://doaj.org/article/2f27ec56e8454fe790c3d347526643232021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02451-4https://doaj.org/toc/2045-2322Abstract Quantifying food intake in wild animals is crucial to many ecological and evolutionary questions, yet it can be very challenging, especially in the marine environment. Because foraging behavior can be inferred from dive recordings in many marine creatures, we hypothesized that specific behavioral dive variables can indicate food intake. To test this hypothesis, we attached time-depth recorders to breeding Adélie penguins also implanted with RFID tags that crossed a weighbridge as they traveled to and from the ocean to feed their chicks. The weighbridge reported how much mass the penguin had gained during a foraging trip. The variables that explained a significant amount of the change in body mass while at sea were the number of foraging dives per hour (46%) and the number of undulations per hour (12%). Most importantly, every increment of 1 in the rate of foraging dives per hour equated to a penguin gaining an average 170 g of mass, over the course of a 6–60 h foraging trip. These results add to a growing understanding that different metrics of foraging success are likely appropriate for different species, and that assessing the types and frequencies of dives using time-depth recorders can yield valuable insights.Amélie LescroëlAnnie SchmidtMegan ElrodDavid G. AinleyGrant BallardNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Amélie Lescroël Annie Schmidt Megan Elrod David G. Ainley Grant Ballard Foraging dive frequency predicts body mass gain in the Adélie penguin
description	Abstract Quantifying food intake in wild animals is crucial to many ecological and evolutionary questions, yet it can be very challenging, especially in the marine environment. Because foraging behavior can be inferred from dive recordings in many marine creatures, we hypothesized that specific behavioral dive variables can indicate food intake. To test this hypothesis, we attached time-depth recorders to breeding Adélie penguins also implanted with RFID tags that crossed a weighbridge as they traveled to and from the ocean to feed their chicks. The weighbridge reported how much mass the penguin had gained during a foraging trip. The variables that explained a significant amount of the change in body mass while at sea were the number of foraging dives per hour (46%) and the number of undulations per hour (12%). Most importantly, every increment of 1 in the rate of foraging dives per hour equated to a penguin gaining an average 170 g of mass, over the course of a 6–60 h foraging trip. These results add to a growing understanding that different metrics of foraging success are likely appropriate for different species, and that assessing the types and frequencies of dives using time-depth recorders can yield valuable insights.
format	article
author	Amélie Lescroël Annie Schmidt Megan Elrod David G. Ainley Grant Ballard
author_facet	Amélie Lescroël Annie Schmidt Megan Elrod David G. Ainley Grant Ballard
author_sort	Amélie Lescroël
title	Foraging dive frequency predicts body mass gain in the Adélie penguin
title_short	Foraging dive frequency predicts body mass gain in the Adélie penguin
title_full	Foraging dive frequency predicts body mass gain in the Adélie penguin
title_fullStr	Foraging dive frequency predicts body mass gain in the Adélie penguin
title_full_unstemmed	Foraging dive frequency predicts body mass gain in the Adélie penguin
title_sort	foraging dive frequency predicts body mass gain in the adélie penguin
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/2f27ec56e8454fe790c3d34752664323
work_keys_str_mv	AT amelielescroel foragingdivefrequencypredictsbodymassgainintheadeliepenguin AT annieschmidt foragingdivefrequencypredictsbodymassgainintheadeliepenguin AT meganelrod foragingdivefrequencypredictsbodymassgainintheadeliepenguin AT davidgainley foragingdivefrequencypredictsbodymassgainintheadeliepenguin AT grantballard foragingdivefrequencypredictsbodymassgainintheadeliepenguin
_version_	1718408067902603264

Foraging dive frequency predicts body mass gain in the Adélie penguin

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