Testing the effect of transient Plio-Pleistocene barriers in monsoonal Australo-Papua: did mangrove habitats maintain genetic connectivity in the Black Butcherbird?

Kearns, Anna M.; Joseph, Leo; Omland, Kevin E.; Cook, Lyn G.

doi:10.1111/j.1365-294x.2011.05330.x

Cited by 41 publications

(61 citation statements)

References 70 publications

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“…Early sequencebased phylogeographic studies in babblers [Pomatostomus (58)] reported deep divergence across the CB relative to divergence within the eastern and western regions of the continent. Subsequent multilocus analyses of several avian systems revealed mostly Pleistocene divergences across the CB for congeners (59)(60)(61), as well as within species (62,63). Some studies examining divergence across the region have discovered clines (64) or complex reticulate patterns in the form of introgression; for example, in butcherbirds (Cracticus), populations east of the KTEB are introgressed with mtDNA from populations of arid-adapted species to the south that expanded during the last glacial maximum, whereas populations west of the KTEB are not introgressed (65).…”

Section: Key Processes Of Divergence and Reticulation In Naturementioning

confidence: 99%

Reticulation, divergence, and the phylogeography–phylogenetics continuum

Edwards

Potter

Schmitt

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

139

105

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Phylogeography, and its extensions into comparative phylogeography, have their roots in the layering of gene trees across geography, a paradigm that was greatly facilitated by the nonrecombining, fast evolution provided by animal mtDNA. As phylogeography moves into the era of next-generation sequencing, the specter of reticulation at several levels-within loci and genomes in the form of recombination and across populations and species in the form of introgression-has raised its head with a prominence even greater than glimpsed during the nuclear gene PCR era. Here we explore the theme of reticulation in comparative phylogeography, speciation analysis, and phylogenomics, and ask how the centrality of gene trees has fared in the next-generation era. To frame these issues, we first provide a snapshot of multilocus phylogeographic studies across the Carpentarian Barrier, a prominent biogeographic barrier dividing faunas spanning the monsoon tropics in northern Australia. We find that divergence across this barrier is evident in most species, but is heterogeneous in time and demographic history, often reflecting the taxonomic distinctness of lineages spanning it. We then discuss a variety of forces generating reticulate patterns in phylogeography, including introgression, contact zones, and the potential selection-driven outliers on next-generation molecular markers. We emphasize the continued need for demographic models incorporating reticulation at the level of genomes and populations, and conclude that gene trees, whether explicit or implicit, should continue to play a role in the future of phylogeography.monsoon tropics | introgression | comparative phylogeography | species trees | coalescent theory

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Section: Key Processes Of Divergence and Reticulation In Naturementioning

confidence: 99%

Reticulation, divergence, and the phylogeography–phylogenetics continuum

Edwards

Potter

Schmitt

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

139

105

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“…Many studies have highlighted the importance of the Carpentarian barrier in shaping species distribution and diversification (Cracraft 1986; Cardinal and Christidis 2000; Jennings and Edwards 2005; Lee and Edwards 2008; Kearns et al. 2011). However, phylogeographic studies of birds have shown contradictory patterns across the Carpentarian barrier: strong differentiation (Lee and Edwards 2008; Toon et al.…”

Section: Discussionmentioning

confidence: 99%

“…2010; Kearns et al. 2011) and the apparent absence of any impact on species differentiation (Kearns et al. 2010; Joseph et al.…”

Section: Discussionmentioning

confidence: 99%

Phylogeography of the antilopine wallaroo (Macropus antilopinus) across tropical northern Australia

Wadley

Fordham

Thomson

et al. 2016

Ecology and Evolution

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The distribution of antilopine wallaroo, Macropus antilopinus, is marked by a break in the species’ range between Queensland and the Northern Territory, coinciding with the Carpentarian barrier. Previous work on M. antilopinus revealed limited genetic differentiation between the Northern Territory and Queensland M. antilopinus populations across this barrier. The study also identified a number of divergent lineages in the Northern Territory, but was unable to elucidate any geographic structure. Here, we re‐examine these results to (1) determine phylogeographic patterns across the range of M. antilopinus and (2) infer the biogeographic barriers associated with these patterns. The tropical savannahs of northern Australia: from the Cape York Peninsula in the east, to the Kimberley in the west. We examined phylogeographic patterns in M. antilopinus using a larger number of samples and three mtDNA genes: NADH dehydrogenase subunit 2, cytochrome b, and the control region. Two datasets were generated and analyzed: (1) a subset of samples with all three mtDNA regions concatenated together and (2) all samples for just control region sequences that included samples from the previous study. Analysis included generating phylogenetic trees based on Bayesian analysis and intraspecific median‐joining networks. The contemporary spatial structure of M. antilopinus mtDNA lineages revealed five shallow clades and a sixth, divergent lineage. The genetic differences that we found between Queensland and Northern Territory M. antilopinus samples confirmed the split in the geographic distribution of the species. We also found weak genetic differentiation between Northern Territory samples and those from the Kimberley region of Western Australia, possibly due to the Kimberley Plateau–Arnhem Land barrier. Within the Northern Territory, two clades appear to be parapatric in the west, while another two clades are broadly sympatric across the Northern Territory. MtDNA diversity of M. antilopinus revealed an unexpectedly complex evolutionary history involving multiple sympatric and parapatric mtDNA clades across northern Australia. These phylogeographic patterns highlight the importance of investigating genetic variation across distributions of species and integrating this information into biodiversity conservation.

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“…Phylogeographic studies of the Australian Magpie C. tibicen (Toon et al, 2007), the Pied Butcherbird C. nigrogularis (Kearns et al, 2010) and the Black Butcherbird C. quoyi (Kearns et al, 2011) have provided compelling evidence that cyclic aridity during the Pleistocene likely caused range contractions and vicariance across regions of unfavourably arid habitats in these species (see also Byrne et al, 2008). Critically, however, the influence of earlier phases of aridity and changes in landscape have not been tested in the Australo-Papuan butcherbirds and allies.…”

Section: Introductionmentioning

confidence: 97%