Melanin; Melanin-based color; Melanocortin; Color polymorphism; Sexually antagonistic selection
Roulin Alexandre, Mansour Abu Rashid, Baruch Spiegel, Dreiss Amélie, Leshem Yossi (2017), « Nature knows no boundaries »: the role of nature conservation in peacebuilding, in Trends in Ecology and Evolution
, 32, 305-310.
San Jose Garcia Luis, Roulin Alexandre (2017), Genomics of colouration in natural animal populations, in Philosophical Transaction of the Royal Society of London
, B 372, 20160337.
Luis San Jose Garcia, Ducrest Anne-Lyse, Ducret Valérie, Simon Céline, Richter Hannes, Wakamatsu Kazu, Roulin Alexandre (2017), MC1R variants affect the expression of melanocortin and melanogenic genes and the association between melanocortin genes and coloration, in Molecular Ecology
, 26, 259-276.
Scriba Madeleine, Gasparini Julien, Jacquin Lise, Mettke-Hofmann NC, Rattenborg Niels, Roulin Alexandre (2017), The effect of food quality during growth on spatial memory consolidation in adult pigeons, in Journal of Experimental Biology
, 220, 573-581.
Roque Ines, Lourenço Rui, Marques Ana, Coelho Joao Pedro, Coelho Claudia, Pereira Eduarda, Rabaça Joao, Roulin Alexandre (2016), Barn owl feathers as biomonitors of mercury : sources of variation in sampling procedures, in Ecotoxicology
, 25, 469-480.
Roulin Alexandre, Randin Christophe (2016), Barn owls display larger black feather spots in cooler regions on the British Isles, in Biological Journal of the Linnean Society
, 119, 445-454.
Roulin Alexandre (2016), Condition-dependence, pleiotropy and the handicap principle of sexual selection in melanin-based colouration, in Biological Reviews
, 91, 328-348.
Sæther Berndt-Erik, Grøtan Vidar, Engen Steinar, Coulson Tim, Grant Peter, Visser Marcel, Brommer Jon, Grant Rosemary, Gustafsson Lars, Hatchwell Ben, Jerstad Kurt, Karell Patrick, Pietiäinen Hannu, Roulin Alexandre, Rostad Ole, Weimerskirch Henri (2016), Demographic routes to variability and regulation in bird populations, in Nature Communication
, 7, 12001.
Béziers Paul, Roulin Alexandre (2016), Double brooding and offspring desertion in the barn owl (Tyto alba), in Journal of Avian Biology
, 47, 235-244.
Roulin Alexandre (2016), Evolutionary trade-off between naturally and sexually selected melanin-based colour traits in the worldwide distributed barn owls and allies, in Biological Journal of the Linnean Society
, 119, 455-476.
Gaigher Arnaud, Burri Reto, Gharib WH, Taberlet Pierre, Roulin Alexandre, Fumagalli Luca (2016), Family-assisted inference of the genetic architecture of MHC variation, in Molecular Ecology Resources
, 16, 1353-1364.
Delhaye Jessica, Salamin Nicolas, Roulin Alexandre, Criscuolo François, Bize Pierre, Christe Philippe (2016), Interspecific correlation between red blood cell mitochondrial ROS production, cardiolipin content and longevity in birds, in Age
, 38, 433-443.
Leighton Gabrielle, Hugo Pierre, Roulin Alexandre, Amar Arjun (2016), Just google it : assessing the use of Google images to describe geographical variation in visible traits of organisms, in Methods in Ecology and Evolution
, 7, 1060-1070.
Mourocq Emeline, Bize Pierre, Roulin Alexandre (2016), Lifespan and reproductive cost explain interspecific variation in the optimal onset of reproduction, in Evolution
, 70, 296-313.
Aliabadian Mansour, Alaei-Kakhki Niloofar, Mirshamsi Omid, Nijman Vincent, Roulin Alexandre (2016), Phylogeny, biogeography and diversification of barn owls (Aves, Strigiformes), in Biological Journal of the Linnean Society
, 119, 904-918.
Dreiss Amélie, Chatelain Philippe, Roulin Alexandre, Richner Heinz (2016), Prosody predicts contest outcome in non-verbal dialogs, in Plos One
, 11, e0166953.
Roulin Alexandre, des Monstiers Baudouin, Ifrid Estelle, Da Silva Arnaud, Genzoni Estelle, Dreiss Amélie (2016), Reciprocal preening and food sharing in colour polymorphic nestling barn owls, in Journal of Evolutionary Biology
, 29, 380-394.
Emaresi Guillaume, Henry Isabelle, Gonzalez Esther, Roulin Alexandre, Bize Pierre (2016), Sex- and melanin-specific variations in the oxidative status of tawny owls in response to manipulated reproductive effort, in Journal of Experimental Biology
, 219, 73-79.
Ducret Valérie, Gahier Arnaud, Simon Céline, Goudet Jérôme, Roulin Alexandre (2016), Sex-specific allelic transmission suggests sexual conflict at MC1R, in Molecular Ecology
, 25, 4551-4563.
Roulin Alexandre (2016), Shrews and moles are less often captured by European barn owls nowadays than 150 years ago, in Bird Study
, 63, 559-563.
Dreiss Amélie, Robin Séchaud, Béziers Paul, Villain Nicolas, Genoud Michel, Almasi Bettina, Jenni Lukas, Roulin Alexandre (2016), Social huddling and physiological thermoregulation are related to melanism in the nocturnal barn owl, in Oecologia
, 180, 371-381.
Mills JA, Roulin Alexandre (2016), Solutions for archiving data in long-term studies: a reply to Whitlock et al., in Trends in Ecology and Evolution
, 31, 85-87.
Roulin Alexandre (2016), Strong decline in the consumption of invertebrates by barn owls from 1860 to 2012 in Europe, in Bird Study
, 63, 146-147.
Burri Reto, Antoniazza Sylvain, Gaigher Arnaud, Ducrest Anne-Lyse, Simon Céline, Fumagalli Luca, Goudet Jérome, Roulin Alexandre (2016), The genetic basis of color-related local adaptation in a ring-like colonization around the Mediterranean, in Evolution
, 70, 140-153.
Dreiss Amélie, Gaime Florence, Delarbre Alice, Moroni Letizia, Lenarth Melissa, Roulin Alexandre (2016), Vocal communication regulates sibling competition over food stock, in Behavioral Ecology and Sociobiology
, 70, 927 -937.
Hadad Ezra, Roulin Alexandre, Charter Motti (2015), A record of communal nesting in the barn owl (Tyto alba), in The Wilson Journal of Ornithology
, 127, 114-119.
Almasi Bettina, Béziers Paul, Roulin Alexandre, Jenni Lukas (2015), Agricultural land-use and human presence around breeding sites increase stress-hormone levels and decrease body mass in barn owl nestlings, in Oecologia
, 179, 89-101.
Mills JA, Teplitsky C, Arroyo B, Charmantier A, Becker PH, Birkhead TR, Bize P, Blumstein DT, Bonenfant C, Boutin S, Bushuev A, Cam E, Cockburn A, Côté SD, Coulson JC, Daunt F, Dingemanse NJ, Doligez B, Drummond H, Espie RHM, Festa-Bianchet M, Frentiu F, Fitzpatrick JW, Furness RW, Roulin Alexandre (2015), Archiving primary data: solutions for long-term studies, in Trends in Ecology and Evolution
, 30, 581-589.
San-Jose Garcia Luis, Ducrest Anne-Lyse, Ducret Valérie, Béziers Paul, Simon Céline, Wakamatsu Kazu, Roulin Alexandre (2015), Effect of the MC1R gene on sexual dimorphism in melanin-based coloration, in Molecular Ecology
, 24, 2794-2808.
Roulin Alexandre, Randin Christophe (2015), Gloger’s rule in North American barn owls, in Auk
, 132, 321-332.
Gangoso L, Roulin Alexandre, Ducrest Anne-Lyse, Grande Juan Manuel, Figuerola Juan (2015), Morph specific variation in innate and acquired immunity supports pleiotropy in the melanocortin system, in Oecologia
, 178, 1113-1123.
Charter Motti, Yossi Leshem, Izhaki Ido, Roulin Alexandre (2015), Pheomelanin-based colouration is correlated with indices of flying strategies in the barn owl, in Journal of Ornithology
, 156, 309-312.
Charter Motti, Izhaki Ido, Leshem Yossi, Meyrom Kobi, Roulin Alexandre (2015), Relationship between diet and reproductive success in the Israeli barn owl, in Journal of Arid Environments
, 122, 59-63.
Roulin Alexandre, Jensen Henrik (2015), Sex-linked inheritance, genetic correlations and sexual dimorphism in three melanin-based color traits in the barn owl, in Journal of Evolutionary Biology
, 28, 655-666.
Almasi Bettina, Roulin Alexandre (2015), Signalling value of maternal and paternal melanism in the barn owl : implication for the resolution of the lek paradox, in Biological Journal of the Linnean Society
, 115, 376-390.
Dreiss Amélie, Ruppli Charlène, Faller Christof, Roulin Alexandre (2015), Social rules govern vocal competition in the barn owl, in Animal Behaviour
, 102, 95-107.
Roulin Alexandre (2015), Spatial variation in the decline of European birds as shown by the barn owl (Tyto alba) diet, in Bird Study
, 62, 271-275.
Dreiss Amélie, Ruppli Charlène, Antille Séverine, Roulin Alexandre (2014), Information retention during competitive interactions: siblings need to constantly repeat vocal displays, in Evolutionary Biology
, 42, 63-74.
Antoniazza Sylvain, Ricardo K., Neuenschwander Sam, Burri Reto, Gaigher Arnaud, Roulin Alexandre, Goudet Jérome (2014), Natural selection in a post-glacial range expansion: the case of the colour cline in the European barn owl, in Molecular Ecology
, 23, 5508-5523.
Peleg Ori, Charter Motti, Leshem Yossi, Izhaki Ido, Roulin Alexandre, Conditional association between melanism and personality in Israeli barn owls, in Bird Study
, 61, 572-577.
Establishing the links between phenotype and genotype is key to resolve questions about the evolution, maintenance and adaptive function of phenotypic variation. This is particularly interesting when a phenotype is positively selected in one sex but negatively in the other sex (sexually antagonistic selection). Identifying the genes responsible for variation in phenotypes selected in opposite direction in the two sexes is particularly interesting because these genes may have beneficial physiological effects in one sex but detrimental in the other sex. In the present project, we intend to tackle the genetic basis of sexually antagonistic selection exerted on a melanin-based plumage trait in the cosmopolitan barn owl. Owls display black spots on feather tips, a genetically inherited trait for which the expression is not sensitive to the environment and body condition. Although males and females can express any phenotype, males are on average smaller-spotted than females. Females displaying large black spots have a selective advantage over smaller-spotted male-like females (and the other way round in males). Because the melanocortin system is involved in the expression of melanin pigments and pleiotropically regulate a large number of physiological and behavioral traits, we hypothesized that genes of the melanocortin system are sexually antagonistically selected promoting the evolution of intralocus sexual genetic conflict. Because we are specifically interested in the melanocortin system, we will look for polymorphisms in this system as well as measure the expression levels of these genes in relation to melanin-based coloration and their associated traits. We plan a number of (experimental) studies to understand the evolutionary implications of the melanocortin system, a topic that had not been considered until we proposed that this system explains why melanin-based colorations covary with many phenotypic traits in a consistent way across vertebrates. This project performed at the local (Switzerland) and worldwide scales is of interest from both evolutionary and medical point of views. Indeed, melanin-based coloration is found in most animals including humans and the underlying genetic system (particularly the melanocortin system) is highly conserved and implicated in many physiological functions and diseases.