A framework for resolving cryptic species: a case study from the lizards of the Australian wet tropics

Singhal, Sonal, Hoskin, Conrad J., Couper, Patrick, Potter, Sally, and Moritz, Craig (2018) A framework for resolving cryptic species: a case study from the lizards of the Australian wet tropics. Systematic Biology, 67 (6). pp. 1061-1075.

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Abstract

As we collect range-wide genetic data for morphologically-defined species, we increasingly unearth evidence for cryptic diversity. Delimiting this cryptic diversity is challenging, both because the divergences span a continuum and because the lack of overt morphological differentiation suggests divergence has proceeded heterogeneously. Herein, we address these challenges as we diagnose and describe species in three co-occurring species groups of Australian lizards. By integrating genomic and morphological data with data on hybridization and introgression from contact zones, we explore several approaches-and their relative benefits and weaknesses-for testing the validity of cryptic lineages. More generally, we advocate that genetic delimitations of cryptic diversity must consider whether these lineages are likely to be durable and persistent through evolutionary time.

Item ID: 57086
Item Type: Article (Research - C1)
ISSN: 1076-836X
Keywords: exome capture, cryptic species, phylogeography, species delimitation, squamates, taxonomy
Copyright Information: Copyright © The Author(s) 2018. Published by Oxford University Press, on behalf of the Society of Systematic Biologists. All rights reserved.
Funders: National Science Foundation (NSF), Australian Research Council (ARC), Australian Biological Resources Study (ABRS)
Projects and Grants: NSF Post-doctoral Research Fellowship in Biology NSF #1519732
Date Deposited: 13 Feb 2019 07:33
FoR Codes: 06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060301 Animal Systematics and Taxonomy @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960806 Forest and Woodlands Flora, Fauna and Biodiversity @ 100%
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