• Welcome to BirdForum, the internet's largest birding community with thousands of members from all over the world. The forums are dedicated to wild birds, birding, binoculars and equipment and all that goes with it.

    Please register for an account to take part in the discussions in the forum, post your pictures in the gallery and more.
ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Campephagidae (1 Viewer)

Markus Lagerqvist said:
Has anyone read the full text?

Are there any taxonomical implications from the molecular phylogeny presented in the study?
Click to expand...

Their study confirms the monophyly of the Campephagidae, with a core Campephagidae group consisting of the genera Coracina, Lalage, Campephaga, Lobotos and Campochaera.
Genus Coracina is not monophyletic. One clade contains species of Lalage and Coracina. Based on the results of the present study, Campephagidae contains these 5 genera: Pericrocotus, Coracina, Campephaga (plus Lobotos?), Campochaera and Lalage (including these species previously assigned to Coracina: C. mcgregori, newtoni, typica, melaschista, melanoptera, fimbriata, polioptera, abbotti, azurea, analis, coerulescens, ostenta, montana, ceramensis, dispar, dohertyi, mindanensis, salomonis, holopolia, incerta, morio, sula, tenuirostris).
Coracina tenuirostris is not monophyletic (3 clade: C. t. admiralitatis, C. t. tenuirostris and C. t. remota, matthiae, heinrothi) with respect to C. salomonis, C. holopolia, C. sula, C. morio and C. incerta.
 
Edolisoma tenuirostre

Pedersen, M.P., Irestedt, M., Joseph, L., Rahbek, C., and Jønsson, K.A. Phylogeography of a “great speciator” (Aves: Edolisoma tenuirostre) reveals complex dispersal and diversification dynamics across the Indo-Pacific. Submitted to Journal of Biogeography, 21 March 2017.
 
Edolisoma tenuirostre

Peter Kovalik said:
Pedersen, M.P., Irestedt, M., Joseph, L., Rahbek, C., and Jønsson, K.A. Phylogeography of a “great speciator” (Aves: Edolisoma tenuirostre) reveals complex dispersal and diversification dynamics across the Indo-Pacific. Submitted to Journal of Biogeography, 21 March 2017.
Click to expand...

Published online

Abstract:

Aim
We derive a new phylogenetic framework of the Indo-Pacific avian genus Edolisoma based on a dense taxon sampling and use it in an explicit spatiotemporal framework to understand the history of intraspecific diversification dynamics in a ‘great speciator’, the Cicadabird Edolisoma tenuirostre/remotum complex.

Location
The Indo-Pacific island region, Australia and New Guinea.

Taxon
Corvoid passerine birds (Passeriformes).

Methods
We used Bayesian phylogenetic methods (beast) to construct a time-calibrated molecular phylogeny of all 19 species in the genus Edolisoma and 27 of 29 subspecies of the E. tenuirostre/remotum complex (previously Coracina tenuirostris) primarily based on one mitochondrial DNA marker. Ancestral area reconstruction methods (‘BioGeoBEARS’) were used to infer the historical biogeography of the genus. We used population-level analyses to assess intraspecific phylogeography and a molecular species delimitation test to evaluate the current taxonomy. A morphometric dataset was used to discuss differential dispersal ability among taxa.

Results
Edolisoma originated in the late Miocene and diversification within the E. tenuirostre/remotum complex began in the Pleistocene. Within the North Melanesian and North Wallacean archipelagos, which have experienced several waves of diversification, we find significant patterns of genetic isolation by distance, but not within the Australo-Papuan ‘mainland’, which was recently back-colonized from these archipelagos. Based on the phylogeny, we suggest several taxonomic changes. We also discuss evidence of taxon cycles within Edolisoma based on correlations of species age, elevational ranges and dispersal ability.

Main conclusions
The biogeographical history and patterns of differentiation between phylogroups within E. tenuirostre support the importance of barriers to gene flow in island systems. Examples of both recent genetic exchange across significant sea barriers and differentiation across much smaller water gaps suggest complex dispersal and diversification dynamics. The capacity for dispersal away from islands, and gradual shifts in dispersal ability in relation to the geographical setting, is supported as important factors in generating a ‘great speciator’.
 
Edolisoma

Peter Kovalik said:
Pedersen, M.P., Irestedt, M., Joseph, L., Rahbek, C., and Jønsson, K.A. Phylogeography of a “great speciator” (Aves: Edolisoma tenuirostre) reveals complex dispersal and diversification dynamics across the Indo-Pacific. J Biogeogr.2018;00:1–12..
Click to expand...

Revised tentative species list:

Edolisoma anale
Edolisoma ostentum
Edolisoma coerulescens (coerulescens, deschauenseei, alterum)
Edolisoma montanum (montanum, bicinia)
Edolisoma dohertyi
Edolisoma dispar (dispar, emancipatum, timoriense)
Edolisoma schisticeps (schisticeps, reichenowi, poliopsa, vittatum)
Edolisoma ceramense (ceramense, hoogerwerfi)
Edolisoma mindanense (lecroyae, elusum, ripleyi, mindanense)
Edolisoma everetti
Edolisoma insperatum
Edolisoma admiralitatis
Edolisoma salomonis
Edolisoma holopolium (holopolium, pygmaeum)
Edolisoma tricolor
Edolisoma tenuirostre (nesiotis, edithae, pererratum, kalaotuae, pelingi, grayi, obiense, amboinense, nehrkorni, meyerii, numforanum, muellerii, aruense, tagulanum, rostratum, melvillense, tenuirostre, morio, incertum, sula, remotum, matthiae, ultimum, heinrothi, rooki, saturatius, nisorium, erythropygium)
Edolisoma monacha (monacha, salvadorii, talautense)
Edolisoma melas (waigeuense, batantae, tommasonis, melas, meeki, goodsoni)

Edolisoma parvulum is clearly not a member of Edolisoma, but was found to be nested within Coracina (M.P. Pedersen, in preparation)
 
Peter Kovalik said:
Edolisoma anale
Edolisoma ostentum
Edolisoma coerulescens (coerulescens, deschauenseei, alterum)
Click to expand...

Quite distant from other Edolisoma and sometimes placed in Analisoma


Edolisoma parvulum is clearly not a member of Edolisoma, but was found to be nested within Coracina (M.P. Pedersen, in preparation)
Click to expand...

What a surprise :eek!:, I update my checklist
 
Last edited:
Peter Kovalik said:
Revised tentative species list:
Edolisoma anale
Edolisoma ostentum
Edolisoma coerulescens (coerulescens, deschauenseei, alterum)
Edolisoma montanum (montanum, bicinia)
Edolisoma dohertyi
Edolisoma dispar (dispar, emancipatum, timoriense)
Edolisoma schisticeps (schisticeps, reichenowi, poliopsa, vittatum)
Edolisoma ceramense (ceramense, hoogerwerfi)
Edolisoma mindanense (lecroyae, elusum, ripleyi, mindanense)
Edolisoma everetti
Edolisoma insperatum
Edolisoma admiralitatis
Edolisoma salomonis
Edolisoma holopolium (holopolium, pygmaeum)
Edolisoma tricolor
Edolisoma tenuirostre (nesiotis, edithae, pererratum, kalaotuae, pelingi, grayi, obiense, amboinense, nehrkorni, meyerii, numforanum, muellerii, aruense, tagulanum, rostratum, melvillense, tenuirostre, morio, incertum, sula, remotum, matthiae, ultimum, heinrothi, rooki, saturatius, nisorium, erythropygium)
Click to expand...

Interesting to see that this certainly is not a splitting fest, apart from tricolor. They lump three species (sula, morio, incertum) that all are widely recognized, plus IOC-recognized remotum and nesiotis (but not weirdly neighbor insperatum). And of course don't recognize the HBW/Birdlife-splits.
 
gusasp said:
Interesting to see that this certainly is not a splitting fest, apart from tricolor. They lump three species (sula, morio, incertum) that all are widely recognized, plus IOC-recognized remotum and nesiotis (but not weirdly neighbor insperatum). And of course don't recognize the HBW/Birdlife-splits.
Click to expand...

Nesiotis was not included in this study and I would not lump it with tenuirostre.
 
Michael Le Pepke, Martin Irestedt, Jon Fjeldså, Carsten Rahbek & Knud Andreas Jønsson. Reconciling supertramps, great speciators and relict species with the taxon cycle stages of a large island radiation (Aves: Campephagidae). Journal if Biogeography. First published: 06 May 2019 https://doi.org/10.1111/jbi.13577

Abstract:

Aim
The taxon cycle concept provides a geographically explicit and testable set of hypotheses for exploring the evolutionary processes underlying the distribution of species in space and time. Here, we test taxon cycle predictions within a large avian island radiation, the core Campephagidae and explicitly integrate the concepts of ‘supertramps’, ‘great speciators’ and relictualization.

Location
The Indo‐Pacific, Australia, Asia and Africa.

Taxon
Corvoid passerine birds.

Methods
We constructed a new time‐calibrated molecular phylogeny of the core Campephagidae (cuckooshrikes, cicadabirds and trillers) using Bayesian phylogenetic methods. Ancestral range estimation methods and diversification rate analyses were used to explore the dispersal and diversification history of the group. We used an extensive dataset on wing morphology and range distributions to test for correlations between evolutionary age of species and dispersal capacity, diversification and distribution, while accounting for phylogenetic non‐independence.

Results
The core Campephagidae represents an ecologically homogeneous radiation distributed across the Indo‐Pacific, Australia, Southeast Asia and Africa. Its members represent a continuum of dispersal abilities; some species are widespread and undifferentiated (‘supertramps’) or show strong differentiation of local populations (‘great speciators’), and a few are endemic to single islands (relicts). We show that older species relative to younger species inhabit fewer and larger islands at higher elevations. The level of intraspecific variation measured as the number of subspecies also decreases with species age, and is highest in ‘great speciators’ with intermediate levels of dispersal abilities (as per hand‐wing index).

Main conclusions
Based on trait correlations with species age, we infer phases of range expansion and contraction over millions of years (taxon cycles), within a single monophyletic group of birds. These observations demonstrate reconciliation of the concepts of ‘supertramps’, ‘great speciators’ and relictual palaeoendemics within the temporal stages of the taxon cycle.
 
Peter Kovalik said:
Michael Le Pepke, Martin Irestedt, Jon Fjeldså, Carsten Rahbek & Knud Andreas Jønsson. Reconciling supertramps, great speciators and relict species with the taxon cycle stages of a large island radiation (Aves: Campephagidae). Journal if Biogeography. First published: 06 May 2019 https://doi.org/10.1111/jbi.13577

Abstract:
Click to expand...

A deep split (14.0 Ma, HPD: 11.4–17.0 Ma) is evident between Coracina/Ceblepyris and the remaining genera, however, the three species‐rich clades, Coracina, Edolisoma and Lalage, are of similar age (c. 9.2–10.4 Ma, HPD: 7.4–12.8 Ma). In addition to the taxonomical changes for Edolisoma reported in Pedersen et al. (2018), our temporal banding approach results in tentative lumping of the following allopatrically occurring species pairs: (a) L. polioptera and L. fimbriata, (b) L. atrovirens and L. leucomela, (c) L. sueurii and L. tricolor, (d) C. ingens and C. papuensis sclaterii, while C. papuensis artamoides (including Australian subspecies) is separated from the latter. All of the species pairs above have at times been considered conspecific (Taylor, 2005). Edolisoma parvulum placed within Coracina. C. lineata lineata (Australia) is separated from the C. lineata (sublineata) complex, and C. striata guillemardi (Sula Archipelago) from the C. striata (kochii) complex, suggesting the need to further revise these large and widespread species. The youngest sympatric species pairs diverged 1.2–1.6 Ma (C. atriceps and C. papuensis, 1.2 Ma; L. melaschistos and L. polioptera, 1.3 Ma; E. holopolium and E. tenuirostre/ remotum, 1.6 Ma).
 
Warning! This thread is more than 5 years ago old.
It's likely that no further discussion is required, in which case we recommend starting a new thread. If however you feel your response is required you can still do so.

Similar threads

Daniel Philippe
Scrubwrens & Mouse-warblers
Replies
17
Views
4K
Jim LeNomenclatoriste
Jim LeNomenclatoriste
Peter Kovalik
Neotropical families of birds
Replies
4
Views
1K
Jim LeNomenclatoriste
Jim LeNomenclatoriste
Daniel Philippe
Rhegmatorhina
Replies
2
Views
847
Jim LeNomenclatoriste
Jim LeNomenclatoriste
Peter Kovalik
The Evolution Conference 2016
Replies
12
Views
3K
cwbirder
C
Richard Klim
White Wagtail
Replies
9
Views
6K
Daniel Philippe
Daniel Philippe

Users who are viewing this thread

Total: 2 (members: 0, guests: 2)
Back
Top