Phenotypic mismatches reveal escape from arms-race coevolution.

Because coevolution takes place across a broad scale of time and space, it is virtually impossible to understand its dynamics and trajectories by studying a single pair of interacting populations at one time. Comparing populations across a range of an interaction, especially for long-lived species,...

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Autores principales:	Charles T Hanifin, Edmund D Brodie
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2008
Materias:	Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/21353b73cef04e05b1434ece1d8df082
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id	oai:doaj.org-article:21353b73cef04e05b1434ece1d8df082
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spelling	oai:doaj.org-article:21353b73cef04e05b1434ece1d8df0822021-11-25T05:33:27ZPhenotypic mismatches reveal escape from arms-race coevolution.1544-91731545-788510.1371/journal.pbio.0060060https://doaj.org/article/21353b73cef04e05b1434ece1d8df0822008-03-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/18336073/?tool=EBIhttps://doaj.org/toc/1544-9173https://doaj.org/toc/1545-7885Because coevolution takes place across a broad scale of time and space, it is virtually impossible to understand its dynamics and trajectories by studying a single pair of interacting populations at one time. Comparing populations across a range of an interaction, especially for long-lived species, can provide insight into these features of coevolution by sampling across a diverse set of conditions and histories. We used measures of prey traits (tetrodotoxin toxicity in newts) and predator traits (tetrodotoxin resistance of snakes) to assess the degree of phenotypic mismatch across the range of their coevolutionary interaction. Geographic patterns of phenotypic exaggeration were similar in prey and predators, with most phenotypically elevated localities occurring along the central Oregon coast and central California. Contrary to expectations, however, these areas of elevated traits did not coincide with the most intense coevolutionary selection. Measures of functional trait mismatch revealed that over one-third of sampled localities were so mismatched that reciprocal selection could not occur given current trait distributions. Estimates of current locality-specific interaction selection gradients confirmed this interpretation. In every case of mismatch, predators were "ahead" of prey in the arms race; the converse escape of prey was never observed. The emergent pattern suggests a dynamic in which interacting species experience reciprocal selection that drives arms-race escalation of both prey and predator phenotypes at a subset of localities across the interaction. This coadaptation proceeds until the evolution of extreme phenotypes by predators, through genes of large effect, allows snakes to, at least temporarily, escape the arms race.Charles T HanifinEdmund D BrodieEdmund D BrodiePublic Library of Science (PLoS)articleBiology (General)QH301-705.5ENPLoS Biology, Vol 6, Iss 3, p e60 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5
spellingShingle	Biology (General) QH301-705.5 Charles T Hanifin Edmund D Brodie Edmund D Brodie Phenotypic mismatches reveal escape from arms-race coevolution.
description	Because coevolution takes place across a broad scale of time and space, it is virtually impossible to understand its dynamics and trajectories by studying a single pair of interacting populations at one time. Comparing populations across a range of an interaction, especially for long-lived species, can provide insight into these features of coevolution by sampling across a diverse set of conditions and histories. We used measures of prey traits (tetrodotoxin toxicity in newts) and predator traits (tetrodotoxin resistance of snakes) to assess the degree of phenotypic mismatch across the range of their coevolutionary interaction. Geographic patterns of phenotypic exaggeration were similar in prey and predators, with most phenotypically elevated localities occurring along the central Oregon coast and central California. Contrary to expectations, however, these areas of elevated traits did not coincide with the most intense coevolutionary selection. Measures of functional trait mismatch revealed that over one-third of sampled localities were so mismatched that reciprocal selection could not occur given current trait distributions. Estimates of current locality-specific interaction selection gradients confirmed this interpretation. In every case of mismatch, predators were "ahead" of prey in the arms race; the converse escape of prey was never observed. The emergent pattern suggests a dynamic in which interacting species experience reciprocal selection that drives arms-race escalation of both prey and predator phenotypes at a subset of localities across the interaction. This coadaptation proceeds until the evolution of extreme phenotypes by predators, through genes of large effect, allows snakes to, at least temporarily, escape the arms race.
format	article
author	Charles T Hanifin Edmund D Brodie Edmund D Brodie
author_facet	Charles T Hanifin Edmund D Brodie Edmund D Brodie
author_sort	Charles T Hanifin
title	Phenotypic mismatches reveal escape from arms-race coevolution.
title_short	Phenotypic mismatches reveal escape from arms-race coevolution.
title_full	Phenotypic mismatches reveal escape from arms-race coevolution.
title_fullStr	Phenotypic mismatches reveal escape from arms-race coevolution.
title_full_unstemmed	Phenotypic mismatches reveal escape from arms-race coevolution.
title_sort	phenotypic mismatches reveal escape from arms-race coevolution.
publisher	Public Library of Science (PLoS)
publishDate	2008
url	https://doaj.org/article/21353b73cef04e05b1434ece1d8df082
work_keys_str_mv	AT charlesthanifin phenotypicmismatchesrevealescapefromarmsracecoevolution AT edmunddbrodie phenotypicmismatchesrevealescapefromarmsracecoevolution AT edmunddbrodie phenotypicmismatchesrevealescapefromarmsracecoevolution
_version_	1718414624517259264

Phenotypic mismatches reveal escape from arms-race coevolution.

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