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The scent of sun worship: basking experience alters scent mark composition in male lizards

Heathcote, Robert J. P.; Bell, Emily; d'Ettorre, Patrizia; While, Geoffrey M. and Uller, Tobias LU (2014) In Behavioral Ecology and Sociobiology 68(5). p.861-870
Abstract
Signals used in female choice should honestly advertise the benefits that males can provide, with direct benefits often argued as being more important than indirect benefits. However, the nature of direct benefits in species without paternal care or nuptial gifts is poorly understood. Previous studies on lizards suggest that females decide where to settle and assumedly who to mate with based on information contained in scent marks from territorial males. Access to high-quality thermal resources is crucial for female reproductive success. Females may therefore be able to detect and exploit thermal-induced variation in the chemical composition of male scent marks when assessing the quality of his territory. We show that the amount of time... (More)
Signals used in female choice should honestly advertise the benefits that males can provide, with direct benefits often argued as being more important than indirect benefits. However, the nature of direct benefits in species without paternal care or nuptial gifts is poorly understood. Previous studies on lizards suggest that females decide where to settle and assumedly who to mate with based on information contained in scent marks from territorial males. Access to high-quality thermal resources is crucial for female reproductive success. Females may therefore be able to detect and exploit thermal-induced variation in the chemical composition of male scent marks when assessing the quality of his territory. We show that the amount of time male wall lizards (Podarcis muralis) are allowed to bask significantly alters the chemical composition of their femoral secretions used in scent marking. The direction of the change is consistent with adaptive plasticity to maintain signalling efficacy under warm conditions that increase evaporation of femoral secretions. The compounds affected by basking experience included those previously associated with male quality or shown to mediate male-male competition in lizards. However, whilst female lizards could discriminate between scent marks of males that had experienced different basking conditions, they did not preferentially associate with the scent from males from high-quality thermal conditions. These results highlight the potential importance of a previously neglected environmental effect on chemical signalling. We suggest thermal effects may have significant consequences for scent-mark composition in variable environments, with potential repercussions on olfactory communication in lizards. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Chemical signalling, Thermal plasticity, Podarcis muralis, Scentmark, Female choice
in
Behavioral Ecology and Sociobiology
volume
68
issue
5
pages
861 - 870
publisher
Springer
external identifiers
  • wos:000334436200016
  • scopus:84898862581
ISSN
1432-0762
DOI
10.1007/s00265-014-1700-4
language
English
LU publication?
yes
id
a3db9d06-8e4c-43d8-957c-6eca8e5939e4 (old id 4438834)
date added to LUP
2014-05-22 09:04:42
date last changed
2017-11-12 03:49:39
@article{a3db9d06-8e4c-43d8-957c-6eca8e5939e4,
  abstract     = {Signals used in female choice should honestly advertise the benefits that males can provide, with direct benefits often argued as being more important than indirect benefits. However, the nature of direct benefits in species without paternal care or nuptial gifts is poorly understood. Previous studies on lizards suggest that females decide where to settle and assumedly who to mate with based on information contained in scent marks from territorial males. Access to high-quality thermal resources is crucial for female reproductive success. Females may therefore be able to detect and exploit thermal-induced variation in the chemical composition of male scent marks when assessing the quality of his territory. We show that the amount of time male wall lizards (Podarcis muralis) are allowed to bask significantly alters the chemical composition of their femoral secretions used in scent marking. The direction of the change is consistent with adaptive plasticity to maintain signalling efficacy under warm conditions that increase evaporation of femoral secretions. The compounds affected by basking experience included those previously associated with male quality or shown to mediate male-male competition in lizards. However, whilst female lizards could discriminate between scent marks of males that had experienced different basking conditions, they did not preferentially associate with the scent from males from high-quality thermal conditions. These results highlight the potential importance of a previously neglected environmental effect on chemical signalling. We suggest thermal effects may have significant consequences for scent-mark composition in variable environments, with potential repercussions on olfactory communication in lizards.},
  author       = {Heathcote, Robert J. P. and Bell, Emily and d'Ettorre, Patrizia and While, Geoffrey M. and Uller, Tobias},
  issn         = {1432-0762},
  keyword      = {Chemical signalling,Thermal plasticity,Podarcis muralis,Scentmark,Female choice},
  language     = {eng},
  number       = {5},
  pages        = {861--870},
  publisher    = {Springer},
  series       = {Behavioral Ecology and Sociobiology},
  title        = {The scent of sun worship: basking experience alters scent mark composition in male lizards},
  url          = {http://dx.doi.org/10.1007/s00265-014-1700-4},
  volume       = {68},
  year         = {2014},
}