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Auteur Secondi, J.; Martin, M.; Goven, D.; Mege, P.; Sourice, S.; Thery, M. openurl 
  Titre Habitat-related variation in the plasticity of a UV-sensitive photoreceptor over a small spatial scale in the palmate newt Type Article scientifique
  Année (down) 2017 Publication Journal Of Evolutionary Biology Revue Abrégée  
  Volume 30 Numéro 6 Pages 1229-1235  
  Résumé Plastic phenotypes are expected to be favoured in heterogeneous environments

compared with stable environments. Sensory systems are interesting

to test this theory because they are costly to produce and support, and

strong fitness costs are expected if they are not tuned to the local environment.

Consistently, the visual system of several species changes with the

conditions experienced during early development. However, there is little

information on whether the amplitude of the change, that is the reaction

norm, differs between visual environments. Given the rapid change of many

ecosystems, especially eutrophication for aquatic habitats, it is crucial to

determine down to which spatial scale, change in the reaction norm occurs.

We addressed this issue by quantifying the between-habitat variation in the

expression of a UV-sensitive opsin in a newt. In western France, this species

breeds in ponds of small forest patches, where water filters out UV, and in

agricultural ponds where UV transmission is variable. We raised larvae from

both habitats with or without exposure to UV. Opsin expression was

reduced in larvae from agricultural habitats when raised without UV,

whereas it was low in larvae from forest ponds under all lighting conditions.

Thus, the variation in the reaction norm of opsin expression was lower in

stable filtering environments and higher in heterogeneous environments. Its

variation occurred between habitats across a small spatial scale. We discuss

the hypotheses for this pattern and for the maintenance of residual opsin

expression in forest populations.
  Auteur institutionnel Thèse  
  Editeur Lieu de Publication Éditeur  
  Langue Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 1010-061x ISBN Médium  
  Région Expédition Conférence  
  Notes WOS:000403155000016 Approuvé pas de  
  Numéro d'Appel CNRS @ thery @ collection 1582  
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