Rhipiduridae (1 Viewer)

IOC Update Diary:
May 5 Move Pygmy Drongo (Chaetorhynchus) from Dicruridae to Rhipiduridae, after Silktail (Lamprolia)

Rhipidura teysmanni

Nathaniel S.R. Ng, Peter R. Wilton, Dewi Malia Prawiradilaga, Ywee Chieh Tay, Mochamad Indrawan, Kritika M. Garg, Frank E. Rheindt. The effects of Pleistocene climate change on biotic differentiation in a montane songbird clade from Wallacea. Molecular Phylogenetics and Evolution. In Press, Accepted Manuscript, Available online 10 May 2017.

Abstract:

The role of Pleistocene Ice Age in tropical diversification is poorly understood, especially in archipelagos, in which glaciation-induced sea level fluctuations may lead to complicated changes in land distribution. To assess how Pleistocene land bridges may have facilitated gene flow in tropical archipelagos, we investigated patterns of diversification in the rarely-collected rusty-bellied fantail Rhipidura teysmanni (Passeriformes: Rhipiduridae) complex from Wallacea using a combination of bioacoustic traits and whole-genome sequencing methods (dd-RADSeq). We report a biogeographic leapfrog pattern in the vocalizations of these birds, and uncover deep genomic divergence among island populations despite the presence of intermittent land connections between some. We demonstrate how rare instances of genetic introgression have affected the evolution of this species complex, and document the presence of double introgressive mitochondrial sweeps, highlighting the dangers of using only mitochondrial DNA in evolutionary research. By applying different tree inference approaches, we demonstrate how concatenation methods can give inaccurate results when investigating divergence in closely-related taxa. Our study highlights high levels of cryptic avian diversity in poorly-explored Wallacea, elucidates complex patterns of Pleistocene climate-mediated diversification in an elusive montane songbird, and suggests that Pleistocene land bridges may have accounted for limited connectivity among montane Wallacean biota.

Silktail

Andersen M.J., Manthey J.D., Naikatini A. & Moyle R.G., in press. Conservation genomics of the Silktail (Aves: Lamprolia victoriae) suggests the need for increased protection of native forest on the Natewa Peninsula, Fiji. Conserv. Genet.

Abstract Effective conservation relies on accurate taxonomy, because we cannot protect what we do not know. Species limits among phenotypically differentiated and allopatrically distributed populations on Southwest Pacific islands are poorly understood. This likely has led to an underestimate of species richness in the Southwest Pacific, and, consequently, a biased application of conservation effort. The silktail Lamprolia victoriae is a bird species endemic to Fiji. Two subspecies are known from Vanua Levu and Taveuni Islands, but uncertainty remains whether they should be considered one or two species. If the latter, increased conservation effort is warranted to protect forest habitat where isolated populations occur only on the Natewa Peninsula. Here, we address this question by examining 8859 single nucleotide polymorphisms produced by restriction-site associated DNA sequencing. We find that the silktail is best considered two species, due to high genetic differentiation and low gene flow between the two subspecies. These differences match known phenotypic differences (size and plumage), as well as allopatric island distributions. We suggest that the silktail be used as an icon for conservation efforts of the heavily degraded forest habitats on the Natewa Peninsula. Finally, we reassess the divergence age estimates of Lamprolia and its relatives, Chaetorhynchus and Rhipidura, in light of new phylogenomic evidence from oscine passerines.

Lamprolia klinesmithi

IOC Updates Diary July 26

Accept proposed split of Natewa Silktail

Lamprolia

Andersen, M.J., Manthey, J.D., Naikatini, A. et al. Conservation genomics of the silktail (Aves: Lamprolia victoriae) suggests the need for increased protection of native forest on the Natewa Peninsula, Fiji. Conserv Genet (2017) 18: 1277. https://doi.org/10.1007/s10592-017-0979-x

Abstract:

Effective conservation relies on accurate taxonomy, because we cannot protect what we do not know. Species limits among phenotypically differentiated and allopatrically distributed populations on Southwest Pacific islands are poorly understood. This likely has led to an underestimate of species richness in the Southwest Pacific, and, consequently, a biased application of conservation effort. The silktail Lamprolia victoriae is a bird species endemic to Fiji. Two subspecies are known from Vanua Levu and Taveuni Islands, but uncertainty remains whether they should be considered one or two species. If the latter, increased conservation effort is warranted to protect forest habitat where isolated populations occur only on the Natewa Peninsula. Here, we address this question by examining 8859 single nucleotide polymorphisms produced by restriction-site associated DNA sequencing. We find that the silktail is best considered two species, due to high genetic differentiation and low gene flow between the two subspecies. These differences match known phenotypic differences (size and plumage), as well as allopatric island distributions. We suggest that the silktail be used as an icon for conservation efforts of the heavily degraded forest habitats on the Natewa Peninsula. Finally, we reassess the divergence age estimates of Lamprolia and its relatives, Chaetorhynchus and Rhipidura, in light of new phylogenomic evidence from oscine passerines.

Rhipidura fuliginosa

Kate Heaphy & Kristal Cain (2021) Song variation between sexes and among subspecies of New Zealand Fantail (Rhipidura fuliginosa), Emu - Austral Ornithology, DOI: 10.1080/01584197.2021.1886589

Abstract:

Variation in bird song occurs at many levels, including between sexes and among geographic regions. Variation can be due to differences in function, habitat, selection or drift. Quantifying when and where such differences occur provides insight into which of these drivers is most likely. Here we examine song variation, (a) between sexes and (b) among the three geographically isolated subspecies, of the New Zealand Fantail (Rhipidura fuliginosa), a monomorphic passerine native to New Zealand. We measured twelve temporal and frequency parameters from recorded songs based on buzz notes. Only maximum frequency in one of the three phrases showed a significant sex difference, although there were suggestions of other sex differences in some element-level parameters. Song characteristics differed notably among subspecies; North Island Fantails typically produced shorter songs, comprised shorter elements at higher frequencies and faster element rates, while the most isolated birds (Chatham Island population), sang longer, slower songs. South Island birds were intermediate and more variable. The similarity of male and female songs suggests song is used by both sexes for similar purposes, while selection pressures associated with different habitats or cultural drift may be responsible for the song differences observed among sub-species. Further research analysing vocalisations of both sexes across a broader geographical range is required to further our understanding of female song function and patterns of geographic variation.

Klicka, L.B., L.C. Campillo, J.D. Manthey, M.J. Andersen, J.P. Dumbacher, C.E.Filardi, L. Joseph, J.A.C. Uy, D.E. Weidemann, and R.G. Moyle. 2022. Genomic and geographic diversification of a "great-speciator" (Rhipidura rufifrons). Ornithology, published 13 September 2022
Genomic and geographic diversification of a “great-speciator” (Rhipidura rufifrons)

Abstract
The radiation of so-called “great speciators” represents a paradox among the myriad of avian radiations endemic to the southwest Pacific. In such radiations, lineages otherwise capable of dispersing across vast distances of open ocean differentiate rapidly and frequently across relatively short geographic barriers. Here, we evaluate the phylogeography of the Rufous Fantail (Rhipidura rufifrons). Although a presumed “great-speciator”, no formal investigations across its range have been performed. Moreover, delimitation of lineages within R. rufifrons, and the biogeographic implications of those relationships, remain unresolved. To investigate whether R. rufifrons represents a great speciator we identified thousands of single nucleotide polymorphisms for 89 individuals, representing 19 described taxa. Analyses recovered 7 divergent lineages and evidence of gene flow between geographically isolated populations. We also found plumage differences to be a poor proxy for evolutionary relationships. Given the relatively recent divergence dates for the clade (1.35–2.31 mya), rapid phenotypic differentiation, and evidence for multiple independent lineages within the species complex, we determine that R. rufifrons possesses the characteristics of a great speciator.

Peter Kovalik said:

Klicka, L.B., L.C. Campillo, J.D. Manthey, M.J. Andersen, J.P. Dumbacher, C.E.Filardi, L. Joseph, J.A.C. Uy, D.E. Weidemann, and R.G. Moyle. 2022. Genomic and geographic diversification of a "great-speciator" (Rhipidura rufifrons). Ornithology, published 13 September 2022
Genomic and geographic diversification of a “great-speciator” (Rhipidura rufifrons)

Abstract
The radiation of so-called “great speciators” represents a paradox among the myriad of avian radiations endemic to the southwest Pacific. In such radiations, lineages otherwise capable of dispersing across vast distances of open ocean differentiate rapidly and frequently across relatively short geographic barriers. Here, we evaluate the phylogeography of the Rufous Fantail (Rhipidura rufifrons). Although a presumed “great-speciator”, no formal investigations across its range have been performed. Moreover, delimitation of lineages within R. rufifrons, and the biogeographic implications of those relationships, remain unresolved. To investigate whether R. rufifrons represents a great speciator we identified thousands of single nucleotide polymorphisms for 89 individuals, representing 19 described taxa. Analyses recovered 7 divergent lineages and evidence of gene flow between geographically isolated populations. We also found plumage differences to be a poor proxy for evolutionary relationships. Given the relatively recent divergence dates for the clade (1.35–2.31 mya), rapid phenotypic differentiation, and evidence for multiple independent lineages within the species complex, we determine that R. rufifrons possesses the characteristics of a great speciator.

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If anyone has access and is willing to share, please let me know ...the 'select your institution' link doesn't work for me ; |

andrew147 said:

If anyone has access and is willing to share, please let me know ...the 'select your institution' link doesn't work for me ; |

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Ouais, me too

Me too!

I have it if anyone still needs access. Email me (or PM me if you don't have my email address).