Age at first reproduction in wolves: different patterns of density dependence for females and males
Age at first reproduction constitutes a key life-history trait in animals and is evolutionarily shaped by fitness benefits and costs of delayed versus early reproduction. The understanding of how intrinsic and extrinsic changes affects age at first reproduction is crucial for conservation and manage...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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2021
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Online Access: | https://repository.publisso.de/resource/frl:6434504 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8059544/ https://doi.org/10.1098/rspb.2021.0207 https://royalsocietypublishing.org/doi/10.1098/rspb.2021.0207#d1e1119 |
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ftleibnizopen:oai:oai.leibnizopen.de:OZJN04kBdbrxVwz6r3r5 2023-10-01T03:55:16+02:00 Age at first reproduction in wolves: different patterns of density dependence for females and males Wikenros, Camilla Gicquel, Morgane Zimmermann, Barbara Flagstad, Øystein Akesson, Mikael 2021 https://repository.publisso.de/resource/frl:6434504 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8059544/ https://doi.org/10.1098/rspb.2021.0207 https://royalsocietypublishing.org/doi/10.1098/rspb.2021.0207#d1e1119 eng eng CC BY 4.0 Proceedings of the Royal Society of London, 288(1948):20210207 Allee effect age at maturity age at first birth Canis lupus inbreeding primiparity 2021 ftleibnizopen https://doi.org/10.1098/rspb.2021.0207 2023-09-03T23:31:57Z Age at first reproduction constitutes a key life-history trait in animals and is evolutionarily shaped by fitness benefits and costs of delayed versus early reproduction. The understanding of how intrinsic and extrinsic changes affects age at first reproduction is crucial for conservation and management of threatened species because of its demographic effects on population growth and generation time. For a period of 40 years in the Scandinavian wolf (Canis lupus) population, including the recolonization phase, we estimated age at first successful reproduction (pup survival to at least three weeks of age) and examined how the variation among individuals was explained by sex, population size (from 1 to 74 packs), primiparous or multiparous origin, reproductive experience of the partner and inbreeding. Median age at first reproduction was 3 years for females (n = 60) and 2 years for males (n = 74), and ranged between 1 and 8–10 years of age (n = 297). Female age at first reproduction decreased with increasing population size, and increased with higher levels of inbreeding. The probability for males to reproduce later first decreased, reaching its minimum when the number of territories approached 40–60, and then increased with increasing population size. Inbreeding for males and reproductive experience of parents and partners for both sexes had overall weak effects on age at first reproduction. These results allow for more accurate parameter estimates when modelling population dynamics for management and conservation of small and vulnerable wolf populations, and show how humans through legal harvest and illegal hunting influence an important life-history trait like age at first reproduction. Other/Unknown Material Canis lupus LeibnizOpen (The Leibniz Association) Proceedings of the Royal Society B: Biological Sciences 288 1948 |
institution |
Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
Allee effect age at maturity age at first birth Canis lupus inbreeding primiparity |
spellingShingle |
Allee effect age at maturity age at first birth Canis lupus inbreeding primiparity Wikenros, Camilla Gicquel, Morgane Zimmermann, Barbara Flagstad, Øystein Akesson, Mikael Age at first reproduction in wolves: different patterns of density dependence for females and males |
topic_facet |
Allee effect age at maturity age at first birth Canis lupus inbreeding primiparity |
description |
Age at first reproduction constitutes a key life-history trait in animals and is evolutionarily shaped by fitness benefits and costs of delayed versus early reproduction. The understanding of how intrinsic and extrinsic changes affects age at first reproduction is crucial for conservation and management of threatened species because of its demographic effects on population growth and generation time. For a period of 40 years in the Scandinavian wolf (Canis lupus) population, including the recolonization phase, we estimated age at first successful reproduction (pup survival to at least three weeks of age) and examined how the variation among individuals was explained by sex, population size (from 1 to 74 packs), primiparous or multiparous origin, reproductive experience of the partner and inbreeding. Median age at first reproduction was 3 years for females (n = 60) and 2 years for males (n = 74), and ranged between 1 and 8–10 years of age (n = 297). Female age at first reproduction decreased with increasing population size, and increased with higher levels of inbreeding. The probability for males to reproduce later first decreased, reaching its minimum when the number of territories approached 40–60, and then increased with increasing population size. Inbreeding for males and reproductive experience of parents and partners for both sexes had overall weak effects on age at first reproduction. These results allow for more accurate parameter estimates when modelling population dynamics for management and conservation of small and vulnerable wolf populations, and show how humans through legal harvest and illegal hunting influence an important life-history trait like age at first reproduction. |
author |
Wikenros, Camilla Gicquel, Morgane Zimmermann, Barbara Flagstad, Øystein Akesson, Mikael |
author_facet |
Wikenros, Camilla Gicquel, Morgane Zimmermann, Barbara Flagstad, Øystein Akesson, Mikael |
author_sort |
Wikenros, Camilla |
title |
Age at first reproduction in wolves: different patterns of density dependence for females and males |
title_short |
Age at first reproduction in wolves: different patterns of density dependence for females and males |
title_full |
Age at first reproduction in wolves: different patterns of density dependence for females and males |
title_fullStr |
Age at first reproduction in wolves: different patterns of density dependence for females and males |
title_full_unstemmed |
Age at first reproduction in wolves: different patterns of density dependence for females and males |
title_sort |
age at first reproduction in wolves: different patterns of density dependence for females and males |
publishDate |
2021 |
url |
https://repository.publisso.de/resource/frl:6434504 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8059544/ https://doi.org/10.1098/rspb.2021.0207 https://royalsocietypublishing.org/doi/10.1098/rspb.2021.0207#d1e1119 |
genre |
Canis lupus |
genre_facet |
Canis lupus |
op_source |
Proceedings of the Royal Society of London, 288(1948):20210207 |
op_rights |
CC BY 4.0 |
op_doi |
https://doi.org/10.1098/rspb.2021.0207 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
288 |
container_issue |
1948 |
_version_ |
1778523599190097920 |