Data From: Effects of disease on foraging behaviour and success in an individual free-ranging northern elephant seal
Evaluating consequences of stressors on vital rates in marine mammals is of considerable interest to scientific and regulatory bodies. Many of these species face numerous anthropogenic and environmental disturbances. Despite its importance as a critical form of mortality, little is known about disea...
Main Authors: | , , , , , , |
---|---|
Format: | Other/Unknown Material |
Language: | unknown |
Published: |
Zenodo
2023
|
Subjects: | |
Online Access: | https://doi.org/10.7291/D1W101 |
id |
ftzenodo:oai:zenodo.org:7916334 |
---|---|
record_format |
openpolar |
spelling |
ftzenodo:oai:zenodo.org:7916334 2024-09-15T18:04:37+00:00 Data From: Effects of disease on foraging behaviour and success in an individual free-ranging northern elephant seal Holser, Rachel Crocker, Daniel Favilla, Arina Adachi, Taiki Keates, Theresa Naito, Yasuhito Costa, Daniel 2023-05-09 https://doi.org/10.7291/D1W101 unknown Zenodo https://doi.org/10.5281/zenodo.7864665 https://zenodo.org/communities/dryad https://doi.org/10.7291/D1W101 oai:zenodo.org:7916334 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode Pinnipeds Endocrinology Ecology Wildlife Biology stress physiology info:eu-repo/semantics/other 2023 ftzenodo https://doi.org/10.7291/D1W10110.5281/zenodo.7864665 2024-07-25T16:14:57Z Evaluating consequences of stressors on vital rates in marine mammals is of considerable interest to scientific and regulatory bodies. Many of these species face numerous anthropogenic and environmental disturbances. Despite its importance as a critical form of mortality, little is known about disease progression in air-breathing marine megafauna at sea. We examined the movement, diving, foraging behaviour, and physiological state of an adult female northern elephant seal ( Mirounga angustirostris ) who suffered from an infection while at sea. Comparing her to healthy individuals, we identified abnormal behavioural patterns from high-resolution biologging instruments that are likely indicators of diseased and deteriorating condition. We observed continuous extended (3–30 min) surface intervals coinciding with almost no foraging attempts (jaw motion) during two weeks of acute illness early in her post-breeding foraging trip. Elephant seals typically spend ~2 min at the surface. There were less frequent but highly extended (30–200 min) surface periods across the remainder of the trip. Dive duration declined throughout the trip rather than increasing. This seal returned in the poorest body condition recorded for an adult female elephant seal (18.3% adipose tissue; post-breeding trip average is 30.4%). She was immunocompromised at the end of her foraging trip and has not been seen since that moulting season. The timing and severity of the illness, which began during the end of the energy-intensive lactation fast, forced this animal over a tipping point from which she could not recover. Additional physiological constraints to foraging, including thermoregulation and oxygen consumption, likely exacerbated her already poor condition. These findings improve our understanding of illness in free-ranging air-breathing marine megafauna, demonstrate the vulnerability of individuals at critical points in their life-history, highlight the importance of considering individual health when interpreting biologging data, and could ... Other/Unknown Material Elephant Seal Elephant Seals Zenodo |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Pinnipeds Endocrinology Ecology Wildlife Biology stress physiology |
spellingShingle |
Pinnipeds Endocrinology Ecology Wildlife Biology stress physiology Holser, Rachel Crocker, Daniel Favilla, Arina Adachi, Taiki Keates, Theresa Naito, Yasuhito Costa, Daniel Data From: Effects of disease on foraging behaviour and success in an individual free-ranging northern elephant seal |
topic_facet |
Pinnipeds Endocrinology Ecology Wildlife Biology stress physiology |
description |
Evaluating consequences of stressors on vital rates in marine mammals is of considerable interest to scientific and regulatory bodies. Many of these species face numerous anthropogenic and environmental disturbances. Despite its importance as a critical form of mortality, little is known about disease progression in air-breathing marine megafauna at sea. We examined the movement, diving, foraging behaviour, and physiological state of an adult female northern elephant seal ( Mirounga angustirostris ) who suffered from an infection while at sea. Comparing her to healthy individuals, we identified abnormal behavioural patterns from high-resolution biologging instruments that are likely indicators of diseased and deteriorating condition. We observed continuous extended (3–30 min) surface intervals coinciding with almost no foraging attempts (jaw motion) during two weeks of acute illness early in her post-breeding foraging trip. Elephant seals typically spend ~2 min at the surface. There were less frequent but highly extended (30–200 min) surface periods across the remainder of the trip. Dive duration declined throughout the trip rather than increasing. This seal returned in the poorest body condition recorded for an adult female elephant seal (18.3% adipose tissue; post-breeding trip average is 30.4%). She was immunocompromised at the end of her foraging trip and has not been seen since that moulting season. The timing and severity of the illness, which began during the end of the energy-intensive lactation fast, forced this animal over a tipping point from which she could not recover. Additional physiological constraints to foraging, including thermoregulation and oxygen consumption, likely exacerbated her already poor condition. These findings improve our understanding of illness in free-ranging air-breathing marine megafauna, demonstrate the vulnerability of individuals at critical points in their life-history, highlight the importance of considering individual health when interpreting biologging data, and could ... |
format |
Other/Unknown Material |
author |
Holser, Rachel Crocker, Daniel Favilla, Arina Adachi, Taiki Keates, Theresa Naito, Yasuhito Costa, Daniel |
author_facet |
Holser, Rachel Crocker, Daniel Favilla, Arina Adachi, Taiki Keates, Theresa Naito, Yasuhito Costa, Daniel |
author_sort |
Holser, Rachel |
title |
Data From: Effects of disease on foraging behaviour and success in an individual free-ranging northern elephant seal |
title_short |
Data From: Effects of disease on foraging behaviour and success in an individual free-ranging northern elephant seal |
title_full |
Data From: Effects of disease on foraging behaviour and success in an individual free-ranging northern elephant seal |
title_fullStr |
Data From: Effects of disease on foraging behaviour and success in an individual free-ranging northern elephant seal |
title_full_unstemmed |
Data From: Effects of disease on foraging behaviour and success in an individual free-ranging northern elephant seal |
title_sort |
data from: effects of disease on foraging behaviour and success in an individual free-ranging northern elephant seal |
publisher |
Zenodo |
publishDate |
2023 |
url |
https://doi.org/10.7291/D1W101 |
genre |
Elephant Seal Elephant Seals |
genre_facet |
Elephant Seal Elephant Seals |
op_relation |
https://doi.org/10.5281/zenodo.7864665 https://zenodo.org/communities/dryad https://doi.org/10.7291/D1W101 oai:zenodo.org:7916334 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.7291/D1W10110.5281/zenodo.7864665 |
_version_ |
1810442239578472448 |