Contrasting offspring dependence periods and diving development rates in two closely related marine mammal species
Understanding the ontogeny of diving behaviour in marine megafauna is crucial owing to its influence on foraging success, energy budgets, and mortality. We compared the ontogeny of diving behaviour in two closely related species—northern elephant seals (Mirounga angustirostris, n = 4) and southern e...
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ftdoajarticles:oai:doaj.org/article:dd9f873560c448c48a28f2cbcf94f4e1 2024-02-04T10:00:08+01:00 Contrasting offspring dependence periods and diving development rates in two closely related marine mammal species Joffrey Jouma'a Florian Orgeret Baptiste Picard Patrick W. Robinson Henri Weimerskirch Christophe Guinet Daniel P. Costa Roxanne S. Beltran 2024-01-01T00:00:00Z https://doi.org/10.1098/rsos.230666 https://doaj.org/article/dd9f873560c448c48a28f2cbcf94f4e1 EN eng The Royal Society https://royalsocietypublishing.org/doi/10.1098/rsos.230666 https://doaj.org/toc/2054-5703 doi:10.1098/rsos.230666 2054-5703 https://doaj.org/article/dd9f873560c448c48a28f2cbcf94f4e1 Royal Society Open Science, Vol 11, Iss 1 (2024) diving development buoyancy physiological development Mirounga spp pinniped comparative analysis Science Q article 2024 ftdoajarticles https://doi.org/10.1098/rsos.230666 2024-01-07T01:42:11Z Understanding the ontogeny of diving behaviour in marine megafauna is crucial owing to its influence on foraging success, energy budgets, and mortality. We compared the ontogeny of diving behaviour in two closely related species—northern elephant seals (Mirounga angustirostris, n = 4) and southern elephant seals (Mirounga leonina, n = 9)—to shed light on the ecological processes underlying migration. Although both species have similar sizes and behaviours as adults, we discovered that juvenile northern elephant seals have superior diving development, reaching 260 m diving depth in just 30 days, while southern elephant seals require 160 days. Similarly, northern elephant seals achieve dive durations of approximately 11 min on their first day of migration, while southern elephant seals take 125 days. The faster physiological maturation of northern elephant seals could be related to longer offspring dependency and post-weaning fast durations, allowing them to develop their endogenous oxygen stores. Comparison across both species suggests that weaned seal pups face a trade-off between leaving early with higher energy stores but poorer physiological abilities or leaving later with improved physiology but reduced fat stores. This trade-off might be influenced by their evolutionary history, which shapes their migration behaviours in changing environments over time. Article in Journal/Newspaper Elephant Seals Mirounga leonina Southern Elephant Seals Directory of Open Access Journals: DOAJ Articles Royal Society Open Science 11 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
diving development buoyancy physiological development Mirounga spp pinniped comparative analysis Science Q |
spellingShingle |
diving development buoyancy physiological development Mirounga spp pinniped comparative analysis Science Q Joffrey Jouma'a Florian Orgeret Baptiste Picard Patrick W. Robinson Henri Weimerskirch Christophe Guinet Daniel P. Costa Roxanne S. Beltran Contrasting offspring dependence periods and diving development rates in two closely related marine mammal species |
topic_facet |
diving development buoyancy physiological development Mirounga spp pinniped comparative analysis Science Q |
description |
Understanding the ontogeny of diving behaviour in marine megafauna is crucial owing to its influence on foraging success, energy budgets, and mortality. We compared the ontogeny of diving behaviour in two closely related species—northern elephant seals (Mirounga angustirostris, n = 4) and southern elephant seals (Mirounga leonina, n = 9)—to shed light on the ecological processes underlying migration. Although both species have similar sizes and behaviours as adults, we discovered that juvenile northern elephant seals have superior diving development, reaching 260 m diving depth in just 30 days, while southern elephant seals require 160 days. Similarly, northern elephant seals achieve dive durations of approximately 11 min on their first day of migration, while southern elephant seals take 125 days. The faster physiological maturation of northern elephant seals could be related to longer offspring dependency and post-weaning fast durations, allowing them to develop their endogenous oxygen stores. Comparison across both species suggests that weaned seal pups face a trade-off between leaving early with higher energy stores but poorer physiological abilities or leaving later with improved physiology but reduced fat stores. This trade-off might be influenced by their evolutionary history, which shapes their migration behaviours in changing environments over time. |
format |
Article in Journal/Newspaper |
author |
Joffrey Jouma'a Florian Orgeret Baptiste Picard Patrick W. Robinson Henri Weimerskirch Christophe Guinet Daniel P. Costa Roxanne S. Beltran |
author_facet |
Joffrey Jouma'a Florian Orgeret Baptiste Picard Patrick W. Robinson Henri Weimerskirch Christophe Guinet Daniel P. Costa Roxanne S. Beltran |
author_sort |
Joffrey Jouma'a |
title |
Contrasting offspring dependence periods and diving development rates in two closely related marine mammal species |
title_short |
Contrasting offspring dependence periods and diving development rates in two closely related marine mammal species |
title_full |
Contrasting offspring dependence periods and diving development rates in two closely related marine mammal species |
title_fullStr |
Contrasting offspring dependence periods and diving development rates in two closely related marine mammal species |
title_full_unstemmed |
Contrasting offspring dependence periods and diving development rates in two closely related marine mammal species |
title_sort |
contrasting offspring dependence periods and diving development rates in two closely related marine mammal species |
publisher |
The Royal Society |
publishDate |
2024 |
url |
https://doi.org/10.1098/rsos.230666 https://doaj.org/article/dd9f873560c448c48a28f2cbcf94f4e1 |
genre |
Elephant Seals Mirounga leonina Southern Elephant Seals |
genre_facet |
Elephant Seals Mirounga leonina Southern Elephant Seals |
op_source |
Royal Society Open Science, Vol 11, Iss 1 (2024) |
op_relation |
https://royalsocietypublishing.org/doi/10.1098/rsos.230666 https://doaj.org/toc/2054-5703 doi:10.1098/rsos.230666 2054-5703 https://doaj.org/article/dd9f873560c448c48a28f2cbcf94f4e1 |
op_doi |
https://doi.org/10.1098/rsos.230666 |
container_title |
Royal Society Open Science |
container_volume |
11 |
container_issue |
1 |
_version_ |
1789965275932655616 |