Experts and Doctors on strigiformes in Lausanne, Vaud, Switzerland
Locale: Lausanne, Vaud, Switzerland
Dreiss A, Henry I, Ruppli C, Almasi B, Roulin A. Darker eumelanic barn owls better withstand food depletion through resistance to food deprivation and lower appetite. Oecologia. 2010;164:65-71 pubmed publisher
..Eumelanic coloration may therefore be associated with adaptations to environments where the risk of food depletion is high. ..
Dreiss A, Antoniazza S, Burri R, Fumagalli L, Sonnay C, Frey C, et al
. Local adaptation and matching habitat choice in female barn owls with respect to melanic coloration. J Evol Biol. 2012;25:103-14 pubmed publisher
..Although small in magnitude, matching habitat selection and local adaptation may help maintain variation in pheomelanin coloration in the barn owl. ..
Roulin A, Dauwe T, Blust R, Eens M, Beaud M. A link between eumelanism and calcium physiology in the barn owl. Naturwissenschaften. 2006;93:426-30 pubmed
..Our study supports the idea that eumelanin-based coloration is associated with a number of physiological processes requiring calcium. ..
Burri R, Niculita Hirzel H, Roulin A, Fumagalli L. Isolation and characterization of major histocompatibility complex (MHC) class II B genes in the Barn owl (Aves: Tyto alba). Immunogenetics. 2008;60:543-50 pubmed publisher
..MHC organization in the Barn owl is simple compared to passerine species that show multiple duplications, and resembles the minimal essential MHC of chicken. ..
Roulin A, Wink M, Salamin N. Selection on a eumelanic ornament is stronger in the tropics than in temperate zones in the worldwide-distributed barn owl. J Evol Biol. 2009;22:345-54 pubmed publisher
..This was, however, verified in the northern hemisphere only. Parasites being particularly abundant in the tropics, they may promote the evolution of darker eumelanic ornaments. ..
Piault R, Gasparini J, Bize P, Jenni Eiermann S, Roulin A. Pheomelanin-based coloration and the ability to cope with variation in food supply and parasitism. Am Nat. 2009;174:548-56 pubmed publisher
..This suggests that dark and pale pheomelanic owls reflect alternative adaptations to food availability and parasites, factors known to vary in space and time...
Gasparini J, Piault R, Bize P, Roulin A. Synergistic and antagonistic interaction between different branches of the immune system is related to melanin-based coloration in nestling tawny owls. J Evol Biol. 2009;22:2348-53 pubmed publisher