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Journal of Ornithology

, Volume 155, Issue 3, pp 581–589 | Cite as

On the systematic position of the Black-collared Lovebird Agapornis swindernianus (Agapornithinae, Psittaciformes)

  • Albrecht Manegold
  • Lars Podsiadlowski
Original Article

Abstract

The first molecular and morphological study of the insufficiently known Black-collared Lovebird Agapornis swindernianus of West and Central Africa indicates that this species is the sister taxon of all the remaining Agapornis parrots. The systematic position of the Grey-headed Lovebird A. canus could not be convincingly resolved by the sequence analysis of the cytochrome b gene, but morphological characters support earlier assumptions that this species forms a clade with the Red-faced and the Black-winged Lovebird, A. pullarius and A. taranta. The new phylogeny of Agapornis presented here suggests that the last common ancestor of lovebirds originated on the African continent, and that it was a more arboreal forest-dweller, probably with a preference for small fruit seeds. Thus, a preference to more open woodlands and a change to a more granivorous diet must have evolved after the split of the lineages leading to A. swindernianus and all the remaining lovebird species.

Keywords

Agapornithinae Psittacoidea Loriculus Os lacrimale Os palatinum Niche transformation 

Zusammenfassung

Die systematische Einordnung des Grünköpfchens Agapornis swindernianus (Agapornithinae, Psittaciformes)

Die erste molekulare und morphologische Analyse zur systematischen Einordnung des kaum bekannten Grünköpfchens (Agapornis swindernianus) lässt den Schluss zu, dass diese zentralafrikanische Art das Schwestertaxon zu allen übrigen Unzertrennlichen (Agapornis) darstellt. Die Verwandtschaftsbeziehungen des Grauköpfchens (A. canus) konnten dagegen nicht mit Hilfe der Analyse der Cytochrom b Sequenz geklärt werden. Morphologische Merkmale stützen aber frühere Hypothesen, nach denen das Grauköpfchen mit dem Orangeköpfchen (A. pullarius) und dem Tarantapapagei (A. taranta) auf eine nur ihnen gemeinsame Stammart zurückzuführen ist. Die hier vorgestellte Stammbaumhypothese legt die Vermutung nahe, dass die letzte gemeinsame Stammart der Unzertrennlichen afrikanischen Ursprungs ist, und dass Unzertrennliche ursprünglich Bewohner immergrüner tropischer Regenwälder waren, die sich möglicherweise bevorzugt von kleinen Fruchtsamen ernährten. Die Bevorzugung von Baumsavannen und ähnlichen offenen Habitaten sowie der Wechsel zu einer vor allem aus Grassamen bestehenden Nahrung erfolgte erst nach der Abspaltung der A. swindernianus-Linie in der Ahnenlinie der übrigen Agapornis-Arten.

Notes

Acknowledgments

We thank S. Tränkner (Senckenberg Forschungsinstitut Frankfurt) for taking the photographs, and A. Gamauf (Natural History Museum Vienna), G. Lenglet (Royal Belgian Institute of Natural Sciences, Brussels), P. Eckhoff (Museum für Naturkunde Berlin), G. Mayr (Senckenberg Forschungsinstitut Frankfurt) and R. van den Elzen and S. Rick (Zoologisches Forschungsmuseum Alexander Koenig, Bonn), for allowing access to collections and specimens. We are also very grateful to R. Ginzberg and J. Woods (Deleware Museum of Natural History, Wilmington) for photographs of the skull of Bolbopsittacus lunulatus, as well as to S. Stadler (Zoo Frankfurt) for information on the morphology of hatchlings of Loriinae and Agapornithinae. P. Johnston (University of Auckland) and T. Worthy (University of Adelaide) kindly helped with the terminology of structures of the parrots’ skull. Comments of an anonymous reviewer and the subject editor improved an earlier version of the manuscript. This study was supported by Deutsche Forschungsgemeinschaft (DFG) grant MA 4809/1-1.

Supplementary material

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Supplementary material 1 (DOC 68 kb)
10336_2013_1039_MOESM2_ESM.doc (38 kb)
Supplementary material 2 (DOC 38 kb)
10336_2013_1039_MOESM3_ESM.doc (25 kb)
Supplementary material 3 (DOC 25 kb)

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Copyright information

© Dt. Ornithologen-Gesellschaft e.V. 2014

Authors and Affiliations

  1. 1.Sektion OrnithologieSenckenberg Forschungsinstitut und NaturmuseumFrankfurtGermany
  2. 2.Comparative Genomics and Animal Evolution, Institut für Evolutionsbiologie & Zoo-ÖkologieUniversität BonnBonnGermany

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