Do intraspecific life history patterns follow interspecific predictions? A test using latitudinal variation in ringed seals
Abstract Mammals adapted to unpredictable and low‐energy environments often evolve a “bet‐hedging” life history strategy characterized by less costly reproductive outputs over a longer and slower‐growing life. In contrast, species adapted to more predictable (i.e., low variation) and higher energy e...
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crwiley:10.1002/1438-390x.12008 2024-03-17T08:56:25+00:00 Do intraspecific life history patterns follow interspecific predictions? A test using latitudinal variation in ringed seals Ferguson, Steven H. Yurkowski, David J. Young, Brent G. Willing, Cornelia Zhu, Xinhua Muir, Derek C. G. Fisk, Aaron T. Thiemann, Gregory W. Environment and Climate Change Canada Fisheries and Oceans Canada Natural Sciences and Engineering Research Council of Canada W. Garfield Weston Foundation 2019 http://dx.doi.org/10.1002/1438-390x.12008 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F1438-390X.12008 https://onlinelibrary.wiley.com/doi/pdf/10.1002/1438-390X.12008 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/1438-390X.12008 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Population Ecology volume 61, issue 4, page 371-382 ISSN 1438-3896 1438-390X Ecology, Evolution, Behavior and Systematics journal-article 2019 crwiley https://doi.org/10.1002/1438-390x.12008 2024-02-22T01:43:46Z Abstract Mammals adapted to unpredictable and low‐energy environments often evolve a “bet‐hedging” life history strategy characterized by less costly reproductive outputs over a longer and slower‐growing life. In contrast, species adapted to more predictable (i.e., low variation) and higher energy environments may evolve greater fecundity over a shorter and faster‐growing life. We tested whether this known interspecific pattern also occurs within a species. We compared life history traits of the ringed seal ( Pusa hispida ) in the Canadian High Arctic to those closer to the southern limit of the species' circumpolar distribution. We found that northern seals grew slower than southern seals (Brody growth coefficient), achieved a greater asymptotic body weight (82 and 69 kg vs. 74 and 54 kg female and male, respectively), reached sexual maturity later (6.1 years vs. 4.5 years), had lower fecundity (1.8 years vs. 1.3 years interbirth interval), longer average lifespan (5 years vs. 3 years median age), and greater movements (1,269 vs. 681 km). Mating systems also likely differed with northern seals showing morphological evidence of a promiscuous mating system with potential sperm competition as indicated by greater relative testes size. The northern region was also characterized by more unpredictable environmental timing of seasonal events, such as spring sea ice breakup. Life history variation between the intraspecific groups of seals appears to agree with interspecific patterns and provides a better understanding of how species' life history parameters shift in concert with environmental conditions. Article in Journal/Newspaper Arctic Pusa hispida ringed seal Sea ice Wiley Online Library Arctic Population Ecology 61 4 371 382 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology, Evolution, Behavior and Systematics Ferguson, Steven H. Yurkowski, David J. Young, Brent G. Willing, Cornelia Zhu, Xinhua Muir, Derek C. G. Fisk, Aaron T. Thiemann, Gregory W. Do intraspecific life history patterns follow interspecific predictions? A test using latitudinal variation in ringed seals |
topic_facet |
Ecology, Evolution, Behavior and Systematics |
description |
Abstract Mammals adapted to unpredictable and low‐energy environments often evolve a “bet‐hedging” life history strategy characterized by less costly reproductive outputs over a longer and slower‐growing life. In contrast, species adapted to more predictable (i.e., low variation) and higher energy environments may evolve greater fecundity over a shorter and faster‐growing life. We tested whether this known interspecific pattern also occurs within a species. We compared life history traits of the ringed seal ( Pusa hispida ) in the Canadian High Arctic to those closer to the southern limit of the species' circumpolar distribution. We found that northern seals grew slower than southern seals (Brody growth coefficient), achieved a greater asymptotic body weight (82 and 69 kg vs. 74 and 54 kg female and male, respectively), reached sexual maturity later (6.1 years vs. 4.5 years), had lower fecundity (1.8 years vs. 1.3 years interbirth interval), longer average lifespan (5 years vs. 3 years median age), and greater movements (1,269 vs. 681 km). Mating systems also likely differed with northern seals showing morphological evidence of a promiscuous mating system with potential sperm competition as indicated by greater relative testes size. The northern region was also characterized by more unpredictable environmental timing of seasonal events, such as spring sea ice breakup. Life history variation between the intraspecific groups of seals appears to agree with interspecific patterns and provides a better understanding of how species' life history parameters shift in concert with environmental conditions. |
author2 |
Environment and Climate Change Canada Fisheries and Oceans Canada Natural Sciences and Engineering Research Council of Canada W. Garfield Weston Foundation |
format |
Article in Journal/Newspaper |
author |
Ferguson, Steven H. Yurkowski, David J. Young, Brent G. Willing, Cornelia Zhu, Xinhua Muir, Derek C. G. Fisk, Aaron T. Thiemann, Gregory W. |
author_facet |
Ferguson, Steven H. Yurkowski, David J. Young, Brent G. Willing, Cornelia Zhu, Xinhua Muir, Derek C. G. Fisk, Aaron T. Thiemann, Gregory W. |
author_sort |
Ferguson, Steven H. |
title |
Do intraspecific life history patterns follow interspecific predictions? A test using latitudinal variation in ringed seals |
title_short |
Do intraspecific life history patterns follow interspecific predictions? A test using latitudinal variation in ringed seals |
title_full |
Do intraspecific life history patterns follow interspecific predictions? A test using latitudinal variation in ringed seals |
title_fullStr |
Do intraspecific life history patterns follow interspecific predictions? A test using latitudinal variation in ringed seals |
title_full_unstemmed |
Do intraspecific life history patterns follow interspecific predictions? A test using latitudinal variation in ringed seals |
title_sort |
do intraspecific life history patterns follow interspecific predictions? a test using latitudinal variation in ringed seals |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/1438-390x.12008 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F1438-390X.12008 https://onlinelibrary.wiley.com/doi/pdf/10.1002/1438-390X.12008 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/1438-390X.12008 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Pusa hispida ringed seal Sea ice |
genre_facet |
Arctic Pusa hispida ringed seal Sea ice |
op_source |
Population Ecology volume 61, issue 4, page 371-382 ISSN 1438-3896 1438-390X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/1438-390x.12008 |
container_title |
Population Ecology |
container_volume |
61 |
container_issue |
4 |
container_start_page |
371 |
op_container_end_page |
382 |
_version_ |
1793765214441701376 |