Prey encounters and spatial memory influence use of foraging patches in a marine central place forager
Given the patchiness and long-term predictability of marine resources, memory of high-quality foraging grounds is expected to provide fitness advantages for central place foragers. However, it remains challenging to characterize how marine predators integrate memory with recent prey encounters to ad...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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2022
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/prey-encounters-and-spatial-memory-influence-use-of-foraging-patches-in-a-marine-central-place-forager(8bc5becb-2234-4d91-94a8-dfd6aba12034).html https://doi.org/10.1098/rspb.2021.2261 https://research-repository.st-andrews.ac.uk/bitstream/10023/25010/1/Iorio_Merlo_2022_Prey_encounters_and_spatial_PRSB_AAM.pdf |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/8bc5becb-2234-4d91-94a8-dfd6aba12034 2023-05-15T17:58:55+02:00 Prey encounters and spatial memory influence use of foraging patches in a marine central place forager Iorio-Merlo, Virginia Graham, Isla Hewitt, Rebecca Aarts, Geert Pirotta, Enrico Hastie, Gordon Drummond Thompson, Paul 2022-03-09 application/pdf https://risweb.st-andrews.ac.uk/portal/en/researchoutput/prey-encounters-and-spatial-memory-influence-use-of-foraging-patches-in-a-marine-central-place-forager(8bc5becb-2234-4d91-94a8-dfd6aba12034).html https://doi.org/10.1098/rspb.2021.2261 https://research-repository.st-andrews.ac.uk/bitstream/10023/25010/1/Iorio_Merlo_2022_Prey_encounters_and_spatial_PRSB_AAM.pdf eng eng info:eu-repo/semantics/openAccess Iorio-Merlo , V , Graham , I , Hewitt , R , Aarts , G , Pirotta , E , Hastie , G D & Thompson , P 2022 , ' Prey encounters and spatial memory influence use of foraging patches in a marine central place forager ' , Proceedings of the Royal Society B: Biological Sciences , vol. 289 , no. 1970 , 20212261 . https://doi.org/10.1098/rspb.2021.2261 Area-restricted search Spatial memory Hidden Markov Model Accelerometer Harbour seals Repeatability article 2022 ftunstandrewcris https://doi.org/10.1098/rspb.2021.2261 2022-07-21T07:01:41Z Given the patchiness and long-term predictability of marine resources, memory of high-quality foraging grounds is expected to provide fitness advantages for central place foragers. However, it remains challenging to characterize how marine predators integrate memory with recent prey encounters to adjust fine-scale movement and use of foraging patches. Here, we used two months of movement data from harbour seals ( Phoca vitulina ) to quantify the repeatability in foraging patches as a proxy for memory. We then integrated these data into analyses of fine-scale movement and underwater behaviour to test how both spatial memory and prey encounter rates influenced the seals' area-restricted search (ARS) behaviour. Specifically, we used one month's GPS data from 29 individuals to build spatial memory maps of searched areas and archived accelerometery data from a subset of five individuals to detect prey catch attempts, a proxy for prey encounters. Individuals were highly consistent in the areas they visited over two consecutive months. Hidden Markov models showed that both spatial memory and prey encounters increased the probability of seals initiating ARS. These results provide evidence that predators use memory to adjust their fine-scale movement, and this ability should be accounted for in movement models. Article in Journal/Newspaper Phoca vitulina University of St Andrews: Research Portal Proceedings of the Royal Society B: Biological Sciences 289 1970 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Area-restricted search Spatial memory Hidden Markov Model Accelerometer Harbour seals Repeatability |
spellingShingle |
Area-restricted search Spatial memory Hidden Markov Model Accelerometer Harbour seals Repeatability Iorio-Merlo, Virginia Graham, Isla Hewitt, Rebecca Aarts, Geert Pirotta, Enrico Hastie, Gordon Drummond Thompson, Paul Prey encounters and spatial memory influence use of foraging patches in a marine central place forager |
topic_facet |
Area-restricted search Spatial memory Hidden Markov Model Accelerometer Harbour seals Repeatability |
description |
Given the patchiness and long-term predictability of marine resources, memory of high-quality foraging grounds is expected to provide fitness advantages for central place foragers. However, it remains challenging to characterize how marine predators integrate memory with recent prey encounters to adjust fine-scale movement and use of foraging patches. Here, we used two months of movement data from harbour seals ( Phoca vitulina ) to quantify the repeatability in foraging patches as a proxy for memory. We then integrated these data into analyses of fine-scale movement and underwater behaviour to test how both spatial memory and prey encounter rates influenced the seals' area-restricted search (ARS) behaviour. Specifically, we used one month's GPS data from 29 individuals to build spatial memory maps of searched areas and archived accelerometery data from a subset of five individuals to detect prey catch attempts, a proxy for prey encounters. Individuals were highly consistent in the areas they visited over two consecutive months. Hidden Markov models showed that both spatial memory and prey encounters increased the probability of seals initiating ARS. These results provide evidence that predators use memory to adjust their fine-scale movement, and this ability should be accounted for in movement models. |
format |
Article in Journal/Newspaper |
author |
Iorio-Merlo, Virginia Graham, Isla Hewitt, Rebecca Aarts, Geert Pirotta, Enrico Hastie, Gordon Drummond Thompson, Paul |
author_facet |
Iorio-Merlo, Virginia Graham, Isla Hewitt, Rebecca Aarts, Geert Pirotta, Enrico Hastie, Gordon Drummond Thompson, Paul |
author_sort |
Iorio-Merlo, Virginia |
title |
Prey encounters and spatial memory influence use of foraging patches in a marine central place forager |
title_short |
Prey encounters and spatial memory influence use of foraging patches in a marine central place forager |
title_full |
Prey encounters and spatial memory influence use of foraging patches in a marine central place forager |
title_fullStr |
Prey encounters and spatial memory influence use of foraging patches in a marine central place forager |
title_full_unstemmed |
Prey encounters and spatial memory influence use of foraging patches in a marine central place forager |
title_sort |
prey encounters and spatial memory influence use of foraging patches in a marine central place forager |
publishDate |
2022 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/prey-encounters-and-spatial-memory-influence-use-of-foraging-patches-in-a-marine-central-place-forager(8bc5becb-2234-4d91-94a8-dfd6aba12034).html https://doi.org/10.1098/rspb.2021.2261 https://research-repository.st-andrews.ac.uk/bitstream/10023/25010/1/Iorio_Merlo_2022_Prey_encounters_and_spatial_PRSB_AAM.pdf |
genre |
Phoca vitulina |
genre_facet |
Phoca vitulina |
op_source |
Iorio-Merlo , V , Graham , I , Hewitt , R , Aarts , G , Pirotta , E , Hastie , G D & Thompson , P 2022 , ' Prey encounters and spatial memory influence use of foraging patches in a marine central place forager ' , Proceedings of the Royal Society B: Biological Sciences , vol. 289 , no. 1970 , 20212261 . https://doi.org/10.1098/rspb.2021.2261 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1098/rspb.2021.2261 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
289 |
container_issue |
1970 |
_version_ |
1766167648904675328 |