Sexual dichromatism,size dimorphism,and microscale anatomy of white wing stripe in blue tits
作者机构：Institute of Environmental SciencesFaculty of BiologyJagiellonian UniversityGronostajowa 730-387Krako´wPoland Institute of Geological SciencesFaculty of Geography and GeologyJagiellonian UniversityGronostajowa 730-387KrakówPoland Department of Animal Ecology/Ecology and GeneticsUppsala UniversityNorbyvägen 18 D75236UppsalaSweden School of BiologicalEnvironmental and Earth SciencesUniversity of New South WalesBiological Sciences Building(D26)Kensington SydneyNSW 2052 Australia
出 版 物：《Current Zoology》 (动物学报（英文版）)
年 卷 期：2021年第67卷第6期
页 面：585-596页
核心收录：
学科分类：0710[理学-生物学] 07[理学] 071002[理学-动物学]
基 金：supported by“the National Science Centre”to K.J.grant no.UMO-2015/19/N/NZ8/00404 to S.M.D grant no.UMO-2015/18/E/NZ8/00505.Long-term study of blue tits on Gotl was also supported by‘the Ministry of Science and Higher Education’(NN304061140) ‘the National Science Centre’(UMO-2012/07/D/NZ8/01317)
主 题：achromatic coloration blue tit dichromatism dimorphism structural coloration wing stripe
摘 要：Achromatic patches are a common element of plumage patterns in many bird species and there is growing body of evidence that in many avian taxa they can play a signaling role in mate *** the blue tit Cyanistes caeruleus is a well-established model species in the studies on coloration,its white wing patch has never been examined in the context of sex-specific trait *** this exploratory study,we examined sexual size dimorphism and dichromatism of greater covert’s dots creating white wing patch and analyzed its correlations with current body condition and crown coloration—a trait with established role in sexual ***,we qualitatively analyzed microstructural barb morphology underlying covert’s *** found significant sexual dimorphism in the dot size independent of covert size and sexual dichromatism in both white dot and blue outer covert’s vane spectral *** structure of covert barbs within the white dot was similar to the one found in barbs from the blue part that is,with a medullary area consisting of dead keratinocytes containing channel-typeß-keratin spongy nanostructure and centrally located air ***,it lacked melanosomes which was the main observed ***,UV chroma of covert’s blue vane was positively correlated with crown UV chroma and current condition(the latter only in males),which should be a premise for further research on the signal function of the wing stripe.
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