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Climacteris (1 Viewer)
- Thread starter Peter Kovalik
- Start date
albertonykus
Well-known member
Edwards, S.V., J.F.R. Tonini, N. Mcinerney, C. Welch, and P. Beerli (2023)
Multilocus phylogeography, population genetics and niche evolution of Australian brown and black-tailed treecreepers (Aves: Climacteris)
Biological Journal of the Linnean Society (advance online publication)
doi: 10.1093/biolinnean/blac144
The Carpentarian barrier across north-eastern Australia is a major biogeographic barrier and a generator of biodiversity within the Australian Monsoonal Tropics. Here we present a continent-wide analysis of mitochondrial (control region) and autosomal (14 anonymous loci) sequence and indel variation and niche modelling of brown and black-tailed treecreepers (Climacteris picumnus and Climacteris melanurus), a clade with a classic distribution on either side of the Carpentarian barrier. mtDNA control region sequences exhibited reciprocal monophyly and strong differentiation (Fst = 0.91), and revealed a signature of a recent selective sweep in C. picumnus. A variety of tests support an isolation-with-migration model of divergence, albeit with low levels of gene flow across the Carpentarian barrier and a divergence time between species of ~1.7–2.8 Mya. Palaeoecological niche models show that both range size as measured by available habitat and estimated historical population sizes of both species declined in the past ~600 kyr and that the area of interspecific range overlap was never historically large, perhaps decreasing opportunities for extensive gene flow. The relatively long divergence time and low opportunity for gene flow may have facilitated speciation more so than in other co-distributed bird taxa across the Australian Monsoonal Tropics.
Multilocus phylogeography, population genetics and niche evolution of Australian brown and black-tailed treecreepers (Aves: Climacteris)
Biological Journal of the Linnean Society (advance online publication)
doi: 10.1093/biolinnean/blac144
The Carpentarian barrier across north-eastern Australia is a major biogeographic barrier and a generator of biodiversity within the Australian Monsoonal Tropics. Here we present a continent-wide analysis of mitochondrial (control region) and autosomal (14 anonymous loci) sequence and indel variation and niche modelling of brown and black-tailed treecreepers (Climacteris picumnus and Climacteris melanurus), a clade with a classic distribution on either side of the Carpentarian barrier. mtDNA control region sequences exhibited reciprocal monophyly and strong differentiation (Fst = 0.91), and revealed a signature of a recent selective sweep in C. picumnus. A variety of tests support an isolation-with-migration model of divergence, albeit with low levels of gene flow across the Carpentarian barrier and a divergence time between species of ~1.7–2.8 Mya. Palaeoecological niche models show that both range size as measured by available habitat and estimated historical population sizes of both species declined in the past ~600 kyr and that the area of interspecific range overlap was never historically large, perhaps decreasing opportunities for extensive gene flow. The relatively long divergence time and low opportunity for gene flow may have facilitated speciation more so than in other co-distributed bird taxa across the Australian Monsoonal Tropics.
Jim LeNomenclatoriste
Je suis un mignon petit Traquet rubicole
I saw it yesterday, I didn't share it since we don't learn anything ☹️
Mysticete
Well-known member
A bit dismissive there? It may not be useful for your taxonomic revisions but that doesn't mean it doesn't contain interesting information.
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