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Seasonal and interpopulational phenotypic variation in morphology and sexual signals of Podarcis liolepis lizards

Ortega, Jesús LU ; Martín, José ; Crochet, Pierre André ; López, Pilar and Clobert, Jean (2019) In PLoS ONE 14(3).
Abstract

Widespread species often show extensive phenotypic variation due to the contrasting abi-otic and biotic factors that shape selective pressures in different environments. In this context, the gradual and predictable patterns of variation in climatic and environmental conditions found in mountain areas offer a great opportunity to explore intraspecific phenotypic variation. For instance, temperature is negatively correlated with altitude and virtually all aspects of the behavior and physiology of ectotherms are sensitive to body temperature. In this work, we tested the hypothesis that morphology, dorsal and ventral coloration and the chemical profile of femoral secretions show interpopulational and seasonal variation in the lacertid... (More)

Widespread species often show extensive phenotypic variation due to the contrasting abi-otic and biotic factors that shape selective pressures in different environments. In this context, the gradual and predictable patterns of variation in climatic and environmental conditions found in mountain areas offer a great opportunity to explore intraspecific phenotypic variation. For instance, temperature is negatively correlated with altitude and virtually all aspects of the behavior and physiology of ectotherms are sensitive to body temperature. In this work, we tested the hypothesis that morphology, dorsal and ventral coloration and the chemical profile of femoral secretions show interpopulational and seasonal variation in the lacertid lizard (Podarcis liolepis). We compared lizards from three populations inhabiting lowland and highland habitats in the French Pyrenees that were closely related genetically. We found that highland lizards were larger, stockier, had longer heads and more femoral pores and had a darker dorsal coloration than lowland ones. In addition, we detected interpopulational differences in both the abundance and the richness of chemical compounds in the glandular secretions, and we also found seasonal variation in the overall chemical composition. Dorsal and ventral coloration differed seasonally and between populations. Ventral and dorsal brightness were higher in lowland than in highland lizards in the reproductive season whereas the reversed trend was found in the non-reproductive season but only for dorsal brightness. In addition, all lizards had browner dorsal coloration in the non-reproductive season, and lowland lizards were greener in the reproductive season. By integrating information from both visual and chemical systems, our works offers a comprehensive view of how these lizards communicate in a multimodal context.

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; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
PLoS ONE
volume
14
issue
3
article number
e0211686
publisher
Public Library of Science
external identifiers
  • scopus:85062940806
  • pmid:30875384
ISSN
1932-6203
DOI
10.1371/journal.pone.0211686
language
English
LU publication?
yes
id
6deb6fd4-53a8-406c-ae97-434ccb62cc23
date added to LUP
2019-03-29 13:43:02
date last changed
2021-04-06 04:21:04
@article{6deb6fd4-53a8-406c-ae97-434ccb62cc23,
  abstract     = {<p>Widespread species often show extensive phenotypic variation due to the contrasting abi-otic and biotic factors that shape selective pressures in different environments. In this context, the gradual and predictable patterns of variation in climatic and environmental conditions found in mountain areas offer a great opportunity to explore intraspecific phenotypic variation. For instance, temperature is negatively correlated with altitude and virtually all aspects of the behavior and physiology of ectotherms are sensitive to body temperature. In this work, we tested the hypothesis that morphology, dorsal and ventral coloration and the chemical profile of femoral secretions show interpopulational and seasonal variation in the lacertid lizard (Podarcis liolepis). We compared lizards from three populations inhabiting lowland and highland habitats in the French Pyrenees that were closely related genetically. We found that highland lizards were larger, stockier, had longer heads and more femoral pores and had a darker dorsal coloration than lowland ones. In addition, we detected interpopulational differences in both the abundance and the richness of chemical compounds in the glandular secretions, and we also found seasonal variation in the overall chemical composition. Dorsal and ventral coloration differed seasonally and between populations. Ventral and dorsal brightness were higher in lowland than in highland lizards in the reproductive season whereas the reversed trend was found in the non-reproductive season but only for dorsal brightness. In addition, all lizards had browner dorsal coloration in the non-reproductive season, and lowland lizards were greener in the reproductive season. By integrating information from both visual and chemical systems, our works offers a comprehensive view of how these lizards communicate in a multimodal context.</p>},
  author       = {Ortega, Jesús and Martín, José and Crochet, Pierre André and López, Pilar and Clobert, Jean},
  issn         = {1932-6203},
  language     = {eng},
  month        = {03},
  number       = {3},
  publisher    = {Public Library of Science},
  series       = {PLoS ONE},
  title        = {Seasonal and interpopulational phenotypic variation in morphology and sexual signals of Podarcis liolepis lizards},
  url          = {http://dx.doi.org/10.1371/journal.pone.0211686},
  doi          = {10.1371/journal.pone.0211686},
  volume       = {14},
  year         = {2019},
}