Cryptic lineage diversity, body size divergence, and sympatry in a species complex of Australian lizards (Gehyra).

Autor: Moritz CC; Division of Ecology and Evolution, Research School of Biology, and Centre for Biodiversity Analysis, The Australian National University, Building 116, Daley Road, Acton, ACT 2601, Australia., Pratt RC; Division of Ecology and Evolution, Research School of Biology, and Centre for Biodiversity Analysis, The Australian National University, Building 116, Daley Road, Acton, ACT 2601, Australia., Bank S; Division of Ecology and Evolution, Research School of Biology, and Centre for Biodiversity Analysis, The Australian National University, Building 116, Daley Road, Acton, ACT 2601, Australia., Bourke G; Division of Ecology and Evolution, Research School of Biology, and Centre for Biodiversity Analysis, The Australian National University, Building 116, Daley Road, Acton, ACT 2601, Australia., Bragg JG; Division of Ecology and Evolution, Research School of Biology, and Centre for Biodiversity Analysis, The Australian National University, Building 116, Daley Road, Acton, ACT 2601, Australia.; National Herbarium of New South Wales, The Royal Botanic Gardens and Domain Trust, Sydney, NSW, Australia., Doughty P; Western Australian Museum, Perth, WA 6026, Australia., Keogh JS; Division of Ecology and Evolution, Research School of Biology, and Centre for Biodiversity Analysis, The Australian National University, Building 116, Daley Road, Acton, ACT 2601, Australia., Laver RJ; Division of Ecology and Evolution, Research School of Biology, and Centre for Biodiversity Analysis, The Australian National University, Building 116, Daley Road, Acton, ACT 2601, Australia.; School of BioSciences, The University of Melbourne, Parkville, VIC 3010, Australia.; Department of Sciences, Museum Victoria, Carlton, Melbourne, VIC 3001, Australia., Potter S; Division of Ecology and Evolution, Research School of Biology, and Centre for Biodiversity Analysis, The Australian National University, Building 116, Daley Road, Acton, ACT 2601, Australia.; Australian Museum Research Institute, Australian Museum, Sydney, NSW, Australia., Teasdale LC; Division of Ecology and Evolution, Research School of Biology, and Centre for Biodiversity Analysis, The Australian National University, Building 116, Daley Road, Acton, ACT 2601, Australia.; School of BioSciences, The University of Melbourne, Parkville, VIC 3010, Australia.; Department of Sciences, Museum Victoria, Carlton, Melbourne, VIC 3001, Australia.; National Collections & Marine Infrastructure, Australian National Insect Collection, CSIRO Black Mountain Laboratories, Acton, ACT 2601, Australia., Tedeschi LG; Division of Ecology and Evolution, Research School of Biology, and Centre for Biodiversity Analysis, The Australian National University, Building 116, Daley Road, Acton, ACT 2601, Australia., Oliver PM; Division of Ecology and Evolution, Research School of Biology, and Centre for Biodiversity Analysis, The Australian National University, Building 116, Daley Road, Acton, ACT 2601, Australia.
Jazyk: angličtina
Zdroj: Evolution; international journal of organic evolution [Evolution] 2018 Jan; Vol. 72 (1), pp. 54-66. Date of Electronic Publication: 2017 Nov 22.
DOI: 10.1111/evo.13380
Abstrakt: Understanding the joint evolutionary and ecological underpinnings of sympatry among close relatives remains a key challenge in biology. This problem can be addressed through joint phylogenomic and phenotypic analysis of complexes of closely related lineages within, and across, species and hence representing the speciation continuum. For a complex of tropical geckos from northern Australia-Gehyra nana and close relatives-we combine mtDNA phylogeography, exon-capture sequencing, and morphological data to resolve independently evolving lineages and infer their divergence history and patterns of morphological evolution. Gehyra nana is found to include nine divergent lineages and is paraphyletic with four other species from the Kimberley region of north-west Australia. Across these 13 taxa, 12 of which are restricted to rocky habitats, several lineages overlap geographically, including on the diverse Kimberley islands. Morphological evolution is dominated by body size shifts, and both body size and shape have evolved gradually across the group. However, larger body size shifts are observed among overlapping taxa than among closely related parapatric lineages of G. nana, and sympatric lineages are more divergent than expected at random. Whether elevated body size differences among sympatric lineages are due to ecological sorting or character displacement remains to be determined.
(© 2017 The Author(s). Evolution © 2017 The Society for the Study of Evolution.)
Databáze: MEDLINE
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