Genetic differentiation within a widespread "supertramp" taxon: Molecular phylogenetics of the Louisiade White-eye (Zosterops griseotinctus)

Molecular Phylogenetics and Evolution
Ethan LinckJohn P Dumbacher

Abstract

"Supertramp" species are highly specialized overwater dispersers, and are useful taxa for investigating the influence of dispersal ability on speciation and diversification in island settings. The Louisiade White-eye (Zosterops griseotinctus) is a widespread avian supertramp endemic to Papua New Guinea's offshore islands. We used maximum likelihood and Bayesian inference to reconstruct phylogenetic relationships based on 2 mitochondrial and 1 nuclear loci (1813 bp total) from 88 individuals representing all 4 named subspecies and the full breadth of the species' range. We found significant geographic and population genetic structure, and support for a major clade containing the coral islets of the central Louisiade Archipelago and outlying Nissan Island. We found evidence of metapopulation structure and gene flow within the Louisiade Archipelago clade, and relatively high genetic distinctiveness of outlying island populations, including the population on volcanically-defaunated Long Island. We reject a hypothesis of panmixia within the Louisiade White-eye despite their long-range dispersal ability, and find evidence of selection against dispersal ability in populations on high-elevation islands where disturbance is rare. Our st...Continue Reading

References

Sep 26, 2001·Proceedings. Biological Sciences·J P Dumbacher, R C Fleischer
Jan 15, 2002·Proceedings. Biological Sciences·Irby J LovetteRobert E Ricklefs
Apr 10, 2008·Molecular Biology and Evolution·David Posada
Aug 19, 2008·The American Naturalist·Kerry L Shaw, Yvonne M Parsons
Feb 3, 2009·Proceedings of the National Academy of Sciences of the United States of America·Robert G MoyleJared Diamond
Oct 25, 2011·Current Biology : CB·Heather R L LernerRobert C Fleischer
Feb 24, 2012·Systematic Biology·Fredrik RonquistJohn P Huelsenbeck
Mar 1, 2012·Molecular Biology and Evolution·Alexei J DrummondAndrew Rambaut

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Citations

Jun 17, 2020·Evolution; International Journal of Organic Evolution·Joseph D MantheyRobert G Moyle
Dec 5, 2020·Molecular Phylogenetics and Evolution·Xena M MapelMichael J Andersen

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