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Spinal arthritis in cane toads across the Australian landscape

Loss of fitness can be a consequence of selection for rapid dispersal ability in invasive species. Increased prevalence of spinal arthritis may occur in cane toad populations at the invasion front as a cost of increased invasiveness, but our knowledge of the ecological drivers of this condition is l...

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Autores principales: Bower, Deborah S., Yasumiba, Kiyomi, Trumbo, Daryl R., Alford, Ross A., Schwarzkopf, Lin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6102202/
https://www.ncbi.nlm.nih.gov/pubmed/30127531
http://dx.doi.org/10.1038/s41598-018-30099-0
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author Bower, Deborah S.
Yasumiba, Kiyomi
Trumbo, Daryl R.
Alford, Ross A.
Schwarzkopf, Lin
author_facet Bower, Deborah S.
Yasumiba, Kiyomi
Trumbo, Daryl R.
Alford, Ross A.
Schwarzkopf, Lin
author_sort Bower, Deborah S.
collection PubMed
description Loss of fitness can be a consequence of selection for rapid dispersal ability in invasive species. Increased prevalence of spinal arthritis may occur in cane toad populations at the invasion front as a cost of increased invasiveness, but our knowledge of the ecological drivers of this condition is lacking. We aimed to determine the factors explaining the prevalence of spinal arthritis in populations across the Australian landscape. We studied populations across a gradient of invasion histories. We collected 2415 toads over five years and determined the presence and size of spondylosis for each individual. We examined the effect of host size, leg length and invasion history on the prevalence of spondylosis. Host size was a significant predictor of spondylosis across populations. Contrary to our expectation, the overall prevalence of spondylosis was not positively related to invasion history and did not correlate with toad relative leg length. Rather than invasion age, the latitude at which populations were sampled provided an alternate explanation for the prevalence of spondylosis in cane toad populations and suggested that the incidence of this condition did not increase as a physiological cost of invasion, but is instead related to physical variables, such as climate.
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spelling pubmed-61022022018-08-27 Spinal arthritis in cane toads across the Australian landscape Bower, Deborah S. Yasumiba, Kiyomi Trumbo, Daryl R. Alford, Ross A. Schwarzkopf, Lin Sci Rep Article Loss of fitness can be a consequence of selection for rapid dispersal ability in invasive species. Increased prevalence of spinal arthritis may occur in cane toad populations at the invasion front as a cost of increased invasiveness, but our knowledge of the ecological drivers of this condition is lacking. We aimed to determine the factors explaining the prevalence of spinal arthritis in populations across the Australian landscape. We studied populations across a gradient of invasion histories. We collected 2415 toads over five years and determined the presence and size of spondylosis for each individual. We examined the effect of host size, leg length and invasion history on the prevalence of spondylosis. Host size was a significant predictor of spondylosis across populations. Contrary to our expectation, the overall prevalence of spondylosis was not positively related to invasion history and did not correlate with toad relative leg length. Rather than invasion age, the latitude at which populations were sampled provided an alternate explanation for the prevalence of spondylosis in cane toad populations and suggested that the incidence of this condition did not increase as a physiological cost of invasion, but is instead related to physical variables, such as climate. Nature Publishing Group UK 2018-08-20 /pmc/articles/PMC6102202/ /pubmed/30127531 http://dx.doi.org/10.1038/s41598-018-30099-0 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Bower, Deborah S.
Yasumiba, Kiyomi
Trumbo, Daryl R.
Alford, Ross A.
Schwarzkopf, Lin
Spinal arthritis in cane toads across the Australian landscape
title Spinal arthritis in cane toads across the Australian landscape
title_full Spinal arthritis in cane toads across the Australian landscape
title_fullStr Spinal arthritis in cane toads across the Australian landscape
title_full_unstemmed Spinal arthritis in cane toads across the Australian landscape
title_short Spinal arthritis in cane toads across the Australian landscape
title_sort spinal arthritis in cane toads across the australian landscape
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6102202/
https://www.ncbi.nlm.nih.gov/pubmed/30127531
http://dx.doi.org/10.1038/s41598-018-30099-0
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