Species limits and phylogeography of North American cricket frogs (Acris: Hylidae)

Tony Gamble; Peter B. Berendzen; H. Bradley Shaffer; David E. Starkey; Andrew M. Simons

doi:10.1016/j.ympev.2008.03.015

Species limits and phylogeography of North American cricket frogs (Acris: Hylidae)

Tony Gamble, Peter B. Berendzen, H. Bradley Shaffer, David E. Starkey, Andrew M. Simons

Research output: Contribution to journal › Article › peer-review

59 Scopus citations

Abstract

Cricket frogs are widely distributed across the eastern United States and two species, the northern cricket frog (Acris crepitans) and the southern cricket frog (A. gryllus) are currently recognized. We generated a phylogenetic hypothesis for Acris using fragments of nuclear and mitochondrial genes in separate and combined phylogenetic analyses. We also used distance methods and fixation indices to evaluate species limits within the genus and the validity of currently recognized subspecies of A. crepitans. The distributions of existing A. crepitans subspecies, defined by morphology and call types, do not match the distributions of evolutionary lineages recovered using our genetic data. We discuss a scenario of call evolution to explain this disparity. We also recovered distinct phylogeographic groups within A. crepitans and A. gryllus that are congruent with other codistributed taxa. Under a lineage-based species concept, we recognize Acris blanchardi as a distinct species. The importance of this revised taxonomy is discussed in light of the dramatic declines in A. blanchardi across the northern and western portions of its range.

Original language	English (US)
Pages (from-to)	112-125
Number of pages	14
Journal	Molecular Phylogenetics and Evolution
Volume	48
Issue number	1
DOIs	https://doi.org/10.1016/j.ympev.2008.03.015
State	Published - Jul 2008

Bibliographical note

Funding Information:
We would like to thank A. Chase, K. Dahl, and N. Weinstein for help in the laboratory. J. Caldwell, J.J.D. Egge, J. Gerholdt, B. Hay, L. Irwin, J. Jensen, M. Lanoo, J. LeClere, R. Lehtinen, Louisiana State University Museum of Natural Science Collection of Genetic Resources, J. MacGregor, R. McInnes, B. Metts, J. Moriarty, E. Moriarty-Lemmon, B. Nagle, J. Parmelee, J. Pramuk, C. Philips, L. Rissler, and J. Simmons generously provided specimens. Funding was provided by a grant to AMS by the Minnesota Department of Natural Resources; the Department of Fisheries, Wildlife and Conservation Biology, University of Minnesota; Bell Museum of Natural History, University of Minnesota; the National Science Foundation; and the UC Davis Agriculture Experiment Station.

Keywords

Acris
Amphibian decline
Cryptic species
Mitochondrial gene
Nuclear gene
Phylogeography
Species delimitation

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title = "Species limits and phylogeography of North American cricket frogs (Acris: Hylidae)",

abstract = "Cricket frogs are widely distributed across the eastern United States and two species, the northern cricket frog (Acris crepitans) and the southern cricket frog (A. gryllus) are currently recognized. We generated a phylogenetic hypothesis for Acris using fragments of nuclear and mitochondrial genes in separate and combined phylogenetic analyses. We also used distance methods and fixation indices to evaluate species limits within the genus and the validity of currently recognized subspecies of A. crepitans. The distributions of existing A. crepitans subspecies, defined by morphology and call types, do not match the distributions of evolutionary lineages recovered using our genetic data. We discuss a scenario of call evolution to explain this disparity. We also recovered distinct phylogeographic groups within A. crepitans and A. gryllus that are congruent with other codistributed taxa. Under a lineage-based species concept, we recognize Acris blanchardi as a distinct species. The importance of this revised taxonomy is discussed in light of the dramatic declines in A. blanchardi across the northern and western portions of its range.",

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note = "Funding Information: We would like to thank A. Chase, K. Dahl, and N. Weinstein for help in the laboratory. J. Caldwell, J.J.D. Egge, J. Gerholdt, B. Hay, L. Irwin, J. Jensen, M. Lanoo, J. LeClere, R. Lehtinen, Louisiana State University Museum of Natural Science Collection of Genetic Resources, J. MacGregor, R. McInnes, B. Metts, J. Moriarty, E. Moriarty-Lemmon, B. Nagle, J. Parmelee, J. Pramuk, C. Philips, L. Rissler, and J. Simmons generously provided specimens. Funding was provided by a grant to AMS by the Minnesota Department of Natural Resources; the Department of Fisheries, Wildlife and Conservation Biology, University of Minnesota; Bell Museum of Natural History, University of Minnesota; the National Science Foundation; and the UC Davis Agriculture Experiment Station. ",

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AU - Starkey, David E.

AU - Simons, Andrew M.

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N2 - Cricket frogs are widely distributed across the eastern United States and two species, the northern cricket frog (Acris crepitans) and the southern cricket frog (A. gryllus) are currently recognized. We generated a phylogenetic hypothesis for Acris using fragments of nuclear and mitochondrial genes in separate and combined phylogenetic analyses. We also used distance methods and fixation indices to evaluate species limits within the genus and the validity of currently recognized subspecies of A. crepitans. The distributions of existing A. crepitans subspecies, defined by morphology and call types, do not match the distributions of evolutionary lineages recovered using our genetic data. We discuss a scenario of call evolution to explain this disparity. We also recovered distinct phylogeographic groups within A. crepitans and A. gryllus that are congruent with other codistributed taxa. Under a lineage-based species concept, we recognize Acris blanchardi as a distinct species. The importance of this revised taxonomy is discussed in light of the dramatic declines in A. blanchardi across the northern and western portions of its range.

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Species limits and phylogeography of North American cricket frogs (Acris: Hylidae)

Abstract

Bibliographical note

Keywords

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