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Medientyp:
E-Artikel
Titel:
Transoceanic origin of microendemic and flightless New Caledonian weevils
Beteiligte:
Toussaint, Emmanuel F. A.;
Tänzler, Rene;
Balke, Michael;
Riedel, Alexander
Erschienen:
The Royal Society, 2017
Erschienen in:
Royal Society Open Science, 4 (2017) 6, Seite 160546
Sprache:
Englisch
DOI:
10.1098/rsos.160546
ISSN:
2054-5703
Entstehung:
Anmerkungen:
Beschreibung:
The origin of the astonishing New Caledonian biota continues to fuel a heated debate among advocates of a Gondwanan relict scenario and defenders of late oceanic dispersal. Here, we study the origin of New Caledonian Trigonopterus flightless weevils using a multimarker molecular phylogeny. We infer two independent clades of species found in the archipelago. Our dating estimates suggest a Late Miocene origin of both clades long after the re-emergence of New Caledonia about 37 Ma. The estimation of ancestral ranges supports an ancestral origin of the genus in a combined region encompassing Australia and New Guinea with subsequent colonizations of New Caledonia out of New Guinea in the mid-Miocene. The two New Caledonian lineages have had very different evolutionary trajectories. Colonizers belonging to a clade of foliage dwellers greatly diversified, whereas species inhabiting leaf-litter have been less successful.