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Taxonomic status of grey-headed Yellow Wagtails breeding in western China

Avian Research 2021年第4期12卷 534-543页

作者： alexander hellquist Fredrik Friberg Petter Haldén Peter Schmidt Ming Ma Gou Jun Urban Olsson Per Alström Fatburs kvarngata 17 11864 StockholmSweden Xinjiang Institute of Ecology and Geography Chinese Academy of SciencesNo.818 Beijing RoadUrumqi 830011XinjiangChina Xinjiang Birdwatching Society 311 Nongda East RoadUrumqi 830091XinjiangChina Systematics and Bio-diversity Department of Biology and Environmental SciencesUniversity of GothenburgGöteborgSweden Gothenburg Global Biodiversity Centre GothenburgSweden Animal Ecology Department of Ecology and GeneticsEvolutionary Biology CentreUppsala UniversityNorbyvägen 18D75236 UppsalaSweden Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing 100101China Edeby 9 74191 KnivstaSweden Lenabergsvägen 33 74392 VattholmaSweden Tallmovägen 9 75645 UppsalaSweden

Background:Field studies from 2011 onwards have demonstrated the presence of a breeding population of Yellow Wagtails(Motacilla flava)in the Xinjiang Uygur Autonomous Region,China that is phenotypically distinct from known subspecies occurring in *** we describe the plumages and vocalisations of this population and discuss its taxonomic ***:The analysis of plumage is based on field studies and photos available *** of vocalisations are compared with recordings from other Yellow Wagtail populations,and differences are analysed based on *** DNA from one individual is compared to other Yellow Wagtail ***:Unlike *** subspecies breeding in or near Xinjiang,males in the studied population show a blue-grey head without prominent white supercilium,being most similar to the widely disjunct *** differ from the similarly widely allopatric ***,which might occur as a migrant or vagrant in Xinjiang,by on average cleaner yellow breast and more extensive white on the throat,and from the widely disjunct *** and ***,which might also occur on migration in that area,by softer contact calls and slower pace of *** are similar to female *** in *** mitochondrial ND2 tree shows the single sample from Xinjiang to be nested in the clade of western Yellow Wagtail ***:We discuss whether the Xinjiang breeding population could represent an intergrade between subspecies breeding nearby,or whether it is better regarded as a separate as yet unrecognized *** argue that the localization of its apparent range in relation to other subspecies along with fairly consistent male and female plumages suggest that it is more likely to represent an undescribed taxon,but conclude that more research is needed to firmly establish its status.

关键词： Bioacoustics Mitochondrial DNA Morphology Motacilla flava Systematics Undescribed populations

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A crowd-sourced genomic project to assess hybrid content in a rare avian vagrant(Azure Tit Cyanistes cyanus(Pallas,1770))

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Avian Research 2023年第4期14卷 545-552页

作者： Martin Irestedt Filip Thorn Per G.P.Ericson Hein van Grouw Yaroslav A.Red'kin alexander hellquist Frank Johansson Johan A.A.Nylander Department of Bioinformatics and Genetics Swedish Museum of Natural HistoryStockholmSweden Department of Zoology Stockholm University Sweden Bird Group Department of Life SciencesNatural History MuseumTringUnited Kingdom Zoological Museum Lomonosov Moscow State UniversityMoscowRussia Institute of Biological Problems of Cryolithozone SB RAS YakutskRussia Department of Women's and Children's Health Uppsala UniversitySweden Department of Ecology and Genetics Uppsala UniversityUppsalaSweden

The aim of this study was to correlate plumage variation with the amount of genomic hybrid content in hybrids between Azure Tits Cyanistes cyanus(Pallas,1770)and European Blue Tit Cyanistes caeruleus(Linnaeus,1758),by re-sequencing the genomes of museum specimens of non-hybrids and presumed hybrids with varying *** project was funded by crowdsourcing and initiated when two presumed Azure Tits,observed by hundreds of Swedish birdwatchers,were rejected as hybrids based on minor plumage deviations assumed to indicate hybrid contents from the European Blue *** results confirm that hybrids with intermediate plumages,so called Pleske’s Tits,are first generation hybrids(F1 hybrids).Individuals,whose plumages are similar to Azure Tits,but assessed as hybrids based on minor plumage deviations,are all backcrosses but vary in their degree of hybrid ***,some individuals morphologically recognized as pure Azure Tits expressed similar degrees of hybrid *** results indicate that:(1)hybrid content may be widespread in Azure Tits in the western part of its habitat distribution;(2)plumage deviation in backcrosses is not linearly correlated with the genetic degree of hybrid origin;and(3)all Azure Tits observed in Europe outside its natural distribution may have some degree of hybrid *** therefore suggest that it is very difficult to phenotypically single out hybrids beyond first generation *** argue that decreased sequencing costs and improved analytical tools open the doors for museomic crowd-sourced projects that may not address outstanding biological questions but have a major interest for lay citizens such as birdwatchers.

关键词： Crowdsourcing Cyanistes cyanus Hybridization Museomics

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