10.5061/DRYAD.40S3G
Alström, Per
Swedish Species Information Centre
Fjeldså, Jon
University of Copenhagen
Jønsson, Knud Andreas
University of Copenhagen
Ödeen, Anders
Uppsala University
Ericson, Per G. P.
Swedish Museum of Natural History
Irestedt, Martin
Natural History Museum
Fjeldsa, J.
University of Copenhagen
Jonsson, K. A.
University of Copenhagen
Alstrom, P.
Swedish University of Agricultural Sciences
Odeen, A.
Uppsala University
Data from: Dramatic niche shifts and morphological change in two insular
bird species
Dryad
dataset
2015
Neogene
Madanga ruficollis
Amaurocichla bocagii
Motacilla spp.
morphological divergence
niche shifts
Dendronanthus indicus
Anthus spp.
Macronyx croceus
Tmetothylachus tenellus
Holocene
adaptive change
2015-02-10T17:00:58Z
2015-02-10T17:00:58Z
en
https://doi.org/10.1098/rsos.140364
101058967 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Colonizations of islands are often associated with rapid morphological
divergence. We present two previously unrecognized cases of dramatic
morphological change and niche shifts in connection with colonization of
tropical forest-covered islands. These evolutionary changes have concealed
the fact that the passerine birds madanga, Madanga ruficollis, from Buru,
Indonesia, and São Tomé shorttail, Amaurocichla bocagii, from São Tomé,
Gulf of Guinea, are forest-adapted members of the family Motacillidae
(pipits and wagtails). We show that Madanga has diverged mainly in
plumage, which may be the result of selection for improved camouflage in
its new arboreal niche, while selection pressures for other morphological
changes have probably been weak owing to preadaptations for the novel
niche. By contrast, we suggest that Amaurocichla's niche change has
led to divergence in both structure and plumage.
Supplementary Table S1List of samples, with GenBank accession numbersTable
S1 Madanga Samples.xlsRSOS-140364 contents and captions ESMsContents and
captions to data files.Supplementary Table S2Measurements of Madanga
ruficollis and the other species in clade A in Fig. 1.Table S2.pdfTable S3
PCA MadangaOutput from PCA of morphological characters.Fig. S1. MB Madanga
Passeriformes AllLoci 4partsRelationships of broad selection of
Passeriformes, including Madanga ruficollis and Amaurocichla bocagii,
based on concatenated ND2, ODC, myo and CHD1Z, analysed by Bayesian
inferenece, partitioned by locus.PassMadangaAllLociAlignment and settings
for analysis shown in Fig. S1.Fig. S2. MB Madanga All Loci 7partsBayesian
inference tree of Madanga ruficollis, Amaurocichla bocagii and
representatives of all clades of Anthus and Motacilla found in previous
studies, including all “small pipits” (except A. petrosus, which was
previously considered conspecific with A. spinoletta). Based on
mitochondrial cytb and ND2, and nuclear ODC, myo and CHD1Z sequence data
analysed in seven partitions (by locus and codon; see
MadangaAllLoci.nxs).MadangaAllLociAlignment and settings for analysis
shown in Fig. S2.Fig. S3. MB single-locus analysesSingle-locus analyses of
the same taxa as in Supplementary Figure S2.Fig. S4. BEAST Madanga
CytbChronogram for the same taxa as in Supplementary Figures 2 and 3,
based on cytb sequences and a relaxed molecular clock (2.1% / million
years), inferred by Bayesian inference, with 95% highest posterior density
intervals for the node ages.MadaCytbShortXml file for analysis in Fig.
S4.Photos AMNHPhotos of Madanga ruficollis and Amaurocichla bocagii from
the American Museum of Natural History, including x-rays of Madanga
ruficollis.
Global