One of these wolves is not like the other: morphological effects and conservation implications of captivity in Mexican wolves
Abstract Maintaining animal populations in captivity can be a useful way to conserve species, especially those that are extinct in the wild or endangered in their native habitats. These animals could be reintroduced into the wild from captivity if conditions improve. However, captive populations of...
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crwiley:10.1111/acv.12724 2024-06-09T07:45:18+00:00 One of these wolves is not like the other: morphological effects and conservation implications of captivity in Mexican wolves Siciliano‐Martina, L. Light, J. E. Riley, D. G. Lawing, A. M. American Society of Mammalogists 2021 http://dx.doi.org/10.1111/acv.12724 https://onlinelibrary.wiley.com/doi/pdf/10.1111/acv.12724 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/acv.12724 https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/acv.12724 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Animal Conservation volume 25, issue 1, page 77-90 ISSN 1367-9430 1469-1795 journal-article 2021 crwiley https://doi.org/10.1111/acv.12724 2024-05-16T14:24:37Z Abstract Maintaining animal populations in captivity can be a useful way to conserve species, especially those that are extinct in the wild or endangered in their native habitats. These animals could be reintroduced into the wild from captivity if conditions improve. However, captive populations of endangered species are often established with few wild‐caught individuals and are maintained in novel habitats, conditions which may make these populations prone to morphological divergence. Changes in cranial morphology, in particular, may limit reintroduction success because these morphological changes may alter cranial functionality related to capturing and consuming prey. To assess whether unintentional morphological changes occur in captivity, we examined the crania and mandibles of 275 specimens of wild, captive and reintroduced Mexican wolves Canis lupus baileyi . We detected significant differences in skull size and shape among these populations. Captive specimens displayed the greatest overall shape variation and were significantly differentiated from the wild population in regions of the skull that are essential to cranial functionality. The reintroduced population displayed the narrowest trait distribution, with cranial morphology that grouped consistently with the captive morphotype. The small number of individuals of the founding population along with the increased variation in cranial morphology among captive Mexican wolves suggests that morphological changes in captivity may be related to genetic changes such as genetic drift or relaxed selection. This study helps to define the changes that may occur in captivity, the potential mechanisms behind these shifts, and the ways in which morphological variation in captive populations may impact conservation initiatives. Article in Journal/Newspaper Canis lupus Wiley Online Library Animal Conservation 25 1 77 90 |
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Wiley Online Library |
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English |
description |
Abstract Maintaining animal populations in captivity can be a useful way to conserve species, especially those that are extinct in the wild or endangered in their native habitats. These animals could be reintroduced into the wild from captivity if conditions improve. However, captive populations of endangered species are often established with few wild‐caught individuals and are maintained in novel habitats, conditions which may make these populations prone to morphological divergence. Changes in cranial morphology, in particular, may limit reintroduction success because these morphological changes may alter cranial functionality related to capturing and consuming prey. To assess whether unintentional morphological changes occur in captivity, we examined the crania and mandibles of 275 specimens of wild, captive and reintroduced Mexican wolves Canis lupus baileyi . We detected significant differences in skull size and shape among these populations. Captive specimens displayed the greatest overall shape variation and were significantly differentiated from the wild population in regions of the skull that are essential to cranial functionality. The reintroduced population displayed the narrowest trait distribution, with cranial morphology that grouped consistently with the captive morphotype. The small number of individuals of the founding population along with the increased variation in cranial morphology among captive Mexican wolves suggests that morphological changes in captivity may be related to genetic changes such as genetic drift or relaxed selection. This study helps to define the changes that may occur in captivity, the potential mechanisms behind these shifts, and the ways in which morphological variation in captive populations may impact conservation initiatives. |
author2 |
American Society of Mammalogists |
format |
Article in Journal/Newspaper |
author |
Siciliano‐Martina, L. Light, J. E. Riley, D. G. Lawing, A. M. |
spellingShingle |
Siciliano‐Martina, L. Light, J. E. Riley, D. G. Lawing, A. M. One of these wolves is not like the other: morphological effects and conservation implications of captivity in Mexican wolves |
author_facet |
Siciliano‐Martina, L. Light, J. E. Riley, D. G. Lawing, A. M. |
author_sort |
Siciliano‐Martina, L. |
title |
One of these wolves is not like the other: morphological effects and conservation implications of captivity in Mexican wolves |
title_short |
One of these wolves is not like the other: morphological effects and conservation implications of captivity in Mexican wolves |
title_full |
One of these wolves is not like the other: morphological effects and conservation implications of captivity in Mexican wolves |
title_fullStr |
One of these wolves is not like the other: morphological effects and conservation implications of captivity in Mexican wolves |
title_full_unstemmed |
One of these wolves is not like the other: morphological effects and conservation implications of captivity in Mexican wolves |
title_sort |
one of these wolves is not like the other: morphological effects and conservation implications of captivity in mexican wolves |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/acv.12724 https://onlinelibrary.wiley.com/doi/pdf/10.1111/acv.12724 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/acv.12724 https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/acv.12724 |
genre |
Canis lupus |
genre_facet |
Canis lupus |
op_source |
Animal Conservation volume 25, issue 1, page 77-90 ISSN 1367-9430 1469-1795 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/acv.12724 |
container_title |
Animal Conservation |
container_volume |
25 |
container_issue |
1 |
container_start_page |
77 |
op_container_end_page |
90 |
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1801374598313279488 |