MJB
Well-known member
The link in both cases leads to George's paper.
MJB
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Motacillidae (14 Viewers)
- Thread starter Richard Klim
- Start date
MJB
Peter Kovalik
Well-known member
MJB
Well-known member
Neither do I, Peter, but now I can't see the post citing the in-press Guallar & Figuerola article. It looks like a glitch somewhere was just temporary. The only paper I can find with that author combination is from 2016!
MJB
Peter Kovalik
Well-known member
Alexander Hellquist, Fredrik Friberg, Petter Haldén, Peter Schmidt, Ming Ma, Gou Jun, Urban Olsson and Per Alström. 2021. Taxonomic status of grey-headed Yellow Wagtails breeding in western China. Avian Research 12: 53.
Taxonomic status of grey-headed Yellow Wagtails breeding in western China - Avian Research (Open access)
Abstract
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 Asia. Here we describe the plumages and vocalisations of this population and discuss its taxonomic status.
Methods: The analysis of plumage is based on field studies and photos available online. Recordings of vocalisations are compared with recordings from other Yellow Wagtail populations, and differences are analysed based on sonograms. Mitochondrial DNA from one individual is compared to other Yellow Wagtail taxa.
Results: Unlike M. flava 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 M. f. cinereocapilla. They differ from the similarly widely allopatric M. f. thunbergi, 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 M. f. plexa and M. f. macronyx, which might also occur on migration in that area, by softer contact calls and slower pace of song. Females are similar to female M. f. feldegg in plumage. The mitochondrial ND2 tree shows the single sample from Xinjiang to be nested in the clade of western Yellow Wagtail taxa.
Conclusion: 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 subspecies. We 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.
Taxonomic status of grey-headed Yellow Wagtails breeding in western China - Avian Research (Open access)
Abstract
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 Asia. Here we describe the plumages and vocalisations of this population and discuss its taxonomic status.
Methods: The analysis of plumage is based on field studies and photos available online. Recordings of vocalisations are compared with recordings from other Yellow Wagtail populations, and differences are analysed based on sonograms. Mitochondrial DNA from one individual is compared to other Yellow Wagtail taxa.
Results: Unlike M. flava 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 M. f. cinereocapilla. They differ from the similarly widely allopatric M. f. thunbergi, 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 M. f. plexa and M. f. macronyx, which might also occur on migration in that area, by softer contact calls and slower pace of song. Females are similar to female M. f. feldegg in plumage. The mitochondrial ND2 tree shows the single sample from Xinjiang to be nested in the clade of western Yellow Wagtail taxa.
Conclusion: 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 subspecies. We 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.
MJB
Well-known member
I would bet that this isn't the last potential new taxon within the Yellow/Citrine Wagtail complex...!
MJB
l_raty
laurent raty
(PDF) Identification and taxonomy of northern and eastern yellow wagtails - new pieces to the puzzle
PDF | To summarise the main findings of this study, the variation in sampled birds across Arctic regions suggests introgression between thunbergi and... | Find, read and cite all the research you need on ResearchGate
www.researchgate.net
Melanie
Well-known member
Comparative mitogenomics of the genus Motacilla (Aves, Passeriformes) and its phylogenetic implications
Chao Yang, Xiaojuan Du, Yuxin Liu, Hao Yuan, Qingxiong Wang, Xiang Hou, Huisheng Gong, Yan Wang, Yuan Huang, Xuejuan Li, Haiyan Ye
ZooKeys 1109: 49-65. Comparative mitogenomics of the genus Motacilla (Aves, Passeriformes) and its phylogenetic implications
Chao Yang, Xiaojuan Du, Yuxin Liu, Hao Yuan, Qingxiong Wang, Xiang Hou, Huisheng Gong, Yan Wang, Yuan Huang, Xuejuan Li, Haiyan Ye
ZooKeys 1109: 49-65. Comparative mitogenomics of the genus Motacilla (Aves, Passeriformes) and its phylogenetic implications
Comparative mitogenomics of the genus Motacilla (Aves, Passeriformes) and its phylogenetic implications
The genus Motacilla belongs to Motacillidae (Passeriformes), where mitochondrial features are poorly understood and phylogeny is controversial. Whole mitochondrial genome (mitogenome) data and large taxon sampling are considered to be ideal strategies to obtain this information. We generated...
zookeys.pensoft.net
Markus Lagerqvist
Well-known member
Don't think this one has been posted?
October 2022
Dutch Birding 44(5):327-336
Plumage variation in admixture zone between Blue-headed Wagtail and Ashy-headed Wagtail in Switzerland
October 2022Dutch Birding 44(5):327-336
Jacana
Will Jones
Lois Rancilhac, Erik D. Enbody, Rebecca Harris, Takema Saitoh, Martin Irestedt, Yang Liu, Fumin Lei, Leif Andersson, Per Alström (2023). Introgression underlies phylogenetic uncertainty but not parallel plumage evolution in a recent songbird radiation bioRxiv 2023.04.25.538255
Instances of parallel phenotypic evolution offer great opportunities to understand the evolutionary processes underlying phenotypic changes. However, confirming parallel phenotypic evolution and studying its causes requires a robust phylogenetic framework. One such example is the "black-and-white wagtails", a group of five species in the songbird genus Motacilla: one species, the White Wagtail (M. alba), shows wide intra-specific plumage variation, while the four others form two pairs of very similar-looking species (African Pied Wagtail M. aguimp + Mekong Wagtail M. samveasnae and Japanese Wagtail M. grandis + White-browed Wagtail M. maderaspatensis, respectively). However, the two species in each of these pairs were not recovered as sisters in previous phylogenetic inferences. Their relationships varied depending on the markers used, suggesting that gene tree heterogeneity might have hampered accurate phylogenetic inference. Here, we use whole genome resequencing data to explore the phylogenetic relationships within this group, with a special emphasis on characterizing the extent of gene tree heterogeneity and its underlying causes. We first used multispecies coalescent methods to generate a "complete evidence" phylogenetic hypothesis based on genome-wide variants, while accounting for incomplete lineage sorting and introgression. We then investigated the variation in phylogenetic signal across the genome, to quantify the extent of discordance across genomic regions, and test its underlying causes. We found that wagtail genomes are mosaics of regions supporting variable genealogies, because of ILS and inter-specific introgression. The most common topology across the genome, supporting M. alba and M. aguimp as sister species, appears to be influenced by ancient introgression. Additionally, we inferred another ancient introgression event, between M. alba and M. grandis. By combining results from multiple analyses, we propose a phylogenetic network for the black-and-white wagtails that confirms that similar phenotypes evolved in non-sister lineages, supporting parallel plumage evolution. Furthermore, the inferred reticulations do not connect species with similar plumage coloration, suggesting that introgression does not underlie parallel plumage evolution in this group. Our results demonstrate the importance of investigation of genome-wide patterns of gene tree heterogeneity to help understanding the mechanisms underlying phenotypic evolution.
Instances of parallel phenotypic evolution offer great opportunities to understand the evolutionary processes underlying phenotypic changes. However, confirming parallel phenotypic evolution and studying its causes requires a robust phylogenetic framework. One such example is the "black-and-white wagtails", a group of five species in the songbird genus Motacilla: one species, the White Wagtail (M. alba), shows wide intra-specific plumage variation, while the four others form two pairs of very similar-looking species (African Pied Wagtail M. aguimp + Mekong Wagtail M. samveasnae and Japanese Wagtail M. grandis + White-browed Wagtail M. maderaspatensis, respectively). However, the two species in each of these pairs were not recovered as sisters in previous phylogenetic inferences. Their relationships varied depending on the markers used, suggesting that gene tree heterogeneity might have hampered accurate phylogenetic inference. Here, we use whole genome resequencing data to explore the phylogenetic relationships within this group, with a special emphasis on characterizing the extent of gene tree heterogeneity and its underlying causes. We first used multispecies coalescent methods to generate a "complete evidence" phylogenetic hypothesis based on genome-wide variants, while accounting for incomplete lineage sorting and introgression. We then investigated the variation in phylogenetic signal across the genome, to quantify the extent of discordance across genomic regions, and test its underlying causes. We found that wagtail genomes are mosaics of regions supporting variable genealogies, because of ILS and inter-specific introgression. The most common topology across the genome, supporting M. alba and M. aguimp as sister species, appears to be influenced by ancient introgression. Additionally, we inferred another ancient introgression event, between M. alba and M. grandis. By combining results from multiple analyses, we propose a phylogenetic network for the black-and-white wagtails that confirms that similar phenotypes evolved in non-sister lineages, supporting parallel plumage evolution. Furthermore, the inferred reticulations do not connect species with similar plumage coloration, suggesting that introgression does not underlie parallel plumage evolution in this group. Our results demonstrate the importance of investigation of genome-wide patterns of gene tree heterogeneity to help understanding the mechanisms underlying phenotypic evolution.
Xenospiza
Distracted
Mentioned by George Sangster on the Dutch Birding website:
Doniol-Valcroze, P, Coiffard, P, Alström, P, Robb, MS, Dufour, P & Crochet, PA 2023. Molecular and acoustic evidence support the species status of Anthus rubescens rubescens and Anthus [rubescens] japonicus (Passeriformes: Motacillidae). Zootaxa (in press).
Abstract: The Buff-bellied Pipit Anthus rubescens comprises two allopatric subspecies groups: A. r. rubescens and A. r. alticola in North America and A. [r.] japonicus in north-east Asia. Despite their great morphological resemblance in breeding plumage, most individuals can be assigned to one or the other subspecies group in non-breeding plumage. Allopatric distributions, morphological differentiation and previously reported molecular divergence suggested the need for additional taxonomic study to assess the rank of these two populations. To resolve the taxonomy of the Buff-bellied Pipit species complex we analysed i) two mitochondrial DNA (mtDNA) loci and ii) nine bioacoustic parameters across 69 sound recordings (338 flight calls) recovered from public databases using principal component analysis and Euclidean distance measures. By comparing our mtDNA and call divergence measures with similar values measured between long-recognised species pairs of the genus, we show that the level of mitochondrial and acoustic divergence between the two Buff-bellied Pipit subspecies groups is typical of species-level divergence in the genus Anthus. Therefore, we recommend splitting the Buffbellied Pipit species complex into two species: Anthus rubescens (American Pipit) and Anthus japonicus (Siberian Pipit). Our results also suggest that the Water Pipit A. spinoletta deserves taxonomic reassessment as its lineages are highly divergent in acoustics and mtDNA, while mtDNA relationships suggest paraphyly relative to the Rock Pipit A. petrosus. Our work highlights the crucial importance of integrative approaches in taxonomy and the usefulness of bioacoustics in studying cryptic diversity.
Doniol-Valcroze, P, Coiffard, P, Alström, P, Robb, MS, Dufour, P & Crochet, PA 2023. Molecular and acoustic evidence support the species status of Anthus rubescens rubescens and Anthus [rubescens] japonicus (Passeriformes: Motacillidae). Zootaxa (in press).
Abstract: The Buff-bellied Pipit Anthus rubescens comprises two allopatric subspecies groups: A. r. rubescens and A. r. alticola in North America and A. [r.] japonicus in north-east Asia. Despite their great morphological resemblance in breeding plumage, most individuals can be assigned to one or the other subspecies group in non-breeding plumage. Allopatric distributions, morphological differentiation and previously reported molecular divergence suggested the need for additional taxonomic study to assess the rank of these two populations. To resolve the taxonomy of the Buff-bellied Pipit species complex we analysed i) two mitochondrial DNA (mtDNA) loci and ii) nine bioacoustic parameters across 69 sound recordings (338 flight calls) recovered from public databases using principal component analysis and Euclidean distance measures. By comparing our mtDNA and call divergence measures with similar values measured between long-recognised species pairs of the genus, we show that the level of mitochondrial and acoustic divergence between the two Buff-bellied Pipit subspecies groups is typical of species-level divergence in the genus Anthus. Therefore, we recommend splitting the Buffbellied Pipit species complex into two species: Anthus rubescens (American Pipit) and Anthus japonicus (Siberian Pipit). Our results also suggest that the Water Pipit A. spinoletta deserves taxonomic reassessment as its lineages are highly divergent in acoustics and mtDNA, while mtDNA relationships suggest paraphyly relative to the Rock Pipit A. petrosus. Our work highlights the crucial importance of integrative approaches in taxonomy and the usefulness of bioacoustics in studying cryptic diversity.
Jim LeNomenclatoriste
Je suis un mignon petit Traquet rubicole
Brian J Small
Well-known member
A further conclusion of this paper concerns Water Pipit:
'We refrain from making formal taxonomic recommendations here for the various subspecies of Anthus
spinoletta because our samples of calls and mtDNA are small, but we note that they are also allopatric taxa with
a similar amount of divergence in calls and mtDNA as A. spinoletta and A. petrosus. A dedicated study on this
complex, including more call recordings, songs, breeding and non-breeding plumage, a larger sampling of mtDNA
and (ideally) nuclear DNA would probably reach a similar conclusion and support a three-way split (spinoletta vs
coutellii vs blakistoni), as already recommended for coutellii by Garner et al. (2015).'
Brian
'We refrain from making formal taxonomic recommendations here for the various subspecies of Anthus
spinoletta because our samples of calls and mtDNA are small, but we note that they are also allopatric taxa with
a similar amount of divergence in calls and mtDNA as A. spinoletta and A. petrosus. A dedicated study on this
complex, including more call recordings, songs, breeding and non-breeding plumage, a larger sampling of mtDNA
and (ideally) nuclear DNA would probably reach a similar conclusion and support a three-way split (spinoletta vs
coutellii vs blakistoni), as already recommended for coutellii by Garner et al. (2015).'
Brian
l_raty
laurent raty
Blast from the past (2014): BOURC-TSC 10th report
😉
😉
albertonykus
Well-known member
Rancilhac, L., E.D. Enbody, R. Harris, T. Saitoh, M. Irestedt, Y. Liu, F. Lei, L. Andersson, and P. Alström (2023)
Introgression underlies phylogenetic uncertainty but not parallel plumage evolution in a recent songbird radiation
Systematic Biology (advance online publication)
doi: 10.1093/sysbio/syad062
Instances of parallel phenotypic evolution offer great opportunities to understand the evolutionary processes underlying phenotypic changes. However, confirming parallel phenotypic evolution and studying its causes requires a robust phylogenetic framework. One such example is the “black-and-white wagtails”, a group of five species in the songbird genus Motacilla: one species, Motacilla alba, shows wide intra-specific plumage variation, while the four others form two pairs of very similar-looking species (M. aguimp + M. samveasnae and M. grandis + M. maderaspatensis, respectively). However, the two species in each of these pairs were not recovered as sisters in previous phylogenetic inferences. Their relationships varied depending on the markers used, suggesting that gene tree heterogeneity might have hampered accurate phylogenetic inference. Here, we use whole genome resequencing data to explore the phylogenetic relationships within this group, with a special emphasis on characterizing the extent of gene tree heterogeneity and its underlying causes. We first used multispecies coalescent methods to generate a “complete evidence” phylogenetic hypothesis based on genome-wide variants, while accounting for incomplete lineage sorting (ILS) and introgression. We then investigated the variation in phylogenetic signal across the genome, to quantify the extent of discordance across genomic regions, and test its underlying causes. We found that wagtail genomes are mosaics of regions supporting variable genealogies, because of ILS and inter-specific introgression. The most common topology across the genome, supporting M. alba and M. aguimp as sister species, appears to be influenced by ancient introgression. Additionally, we inferred another ancient introgression event, between M. alba and M. grandis. By combining results from multiple analyses, we propose a phylogenetic network for the black-and-white wagtails that confirms that similar phenotypes evolved in non-sister lineages, supporting parallel plumage evolution. Furthermore, the inferred reticulations do not connect species with similar plumage coloration, suggesting that introgression does not underlie parallel plumage evolution in this group. Our results demonstrate the importance of investigation of genome-wide patterns of gene tree heterogeneity to help understanding the mechanisms underlying phenotypic evolution.
Introgression underlies phylogenetic uncertainty but not parallel plumage evolution in a recent songbird radiation
Systematic Biology (advance online publication)
doi: 10.1093/sysbio/syad062
Instances of parallel phenotypic evolution offer great opportunities to understand the evolutionary processes underlying phenotypic changes. However, confirming parallel phenotypic evolution and studying its causes requires a robust phylogenetic framework. One such example is the “black-and-white wagtails”, a group of five species in the songbird genus Motacilla: one species, Motacilla alba, shows wide intra-specific plumage variation, while the four others form two pairs of very similar-looking species (M. aguimp + M. samveasnae and M. grandis + M. maderaspatensis, respectively). However, the two species in each of these pairs were not recovered as sisters in previous phylogenetic inferences. Their relationships varied depending on the markers used, suggesting that gene tree heterogeneity might have hampered accurate phylogenetic inference. Here, we use whole genome resequencing data to explore the phylogenetic relationships within this group, with a special emphasis on characterizing the extent of gene tree heterogeneity and its underlying causes. We first used multispecies coalescent methods to generate a “complete evidence” phylogenetic hypothesis based on genome-wide variants, while accounting for incomplete lineage sorting (ILS) and introgression. We then investigated the variation in phylogenetic signal across the genome, to quantify the extent of discordance across genomic regions, and test its underlying causes. We found that wagtail genomes are mosaics of regions supporting variable genealogies, because of ILS and inter-specific introgression. The most common topology across the genome, supporting M. alba and M. aguimp as sister species, appears to be influenced by ancient introgression. Additionally, we inferred another ancient introgression event, between M. alba and M. grandis. By combining results from multiple analyses, we propose a phylogenetic network for the black-and-white wagtails that confirms that similar phenotypes evolved in non-sister lineages, supporting parallel plumage evolution. Furthermore, the inferred reticulations do not connect species with similar plumage coloration, suggesting that introgression does not underlie parallel plumage evolution in this group. Our results demonstrate the importance of investigation of genome-wide patterns of gene tree heterogeneity to help understanding the mechanisms underlying phenotypic evolution.
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