Pseudacris

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Emily Moriarty Lemmon - One of the best experts on this subject based on the ideXlab platform.

  • Hidden Diversity in the Mountain Chorus Frog (Pseudacris brachyphona) and the Diagnosis of a New Species of Chorus Frog in the Southeastern United States
    Copeia, 2020
    Co-Authors: Oscar E. Ospina, Lynee Tieu, Joseph J. Apodaca, Emily Moriarty Lemmon
    Abstract:

    A major driver generating amphibian diversity in the Appalachian Mountains is the complex paleogeography of the zone. Although the Appalachian Mountains have been widely studied, much of its amphibian phylogeography remains poorly known. The Mountain Chorus Frog (Pseudacris brachyphona) is one example of an understudied organism due to its elusiveness, patchy distribution, and short breeding seasons. Phylogenetic studies have suggested the existence of divergent lineages within P. brachyphona; however, insufficient sampling and the lack of diagnostic morphological traits have prevented further assessment of their taxonomic status. Using a genome-wide nuclear data set obtained via anchored hybrid enrichment, acoustic data, and ecological modeling, we tested for the existence of cryptic species within P. brachyphona. Our species tree estimation supports previous mitochondrial-based phylogenetic hypotheses that separate P. brachyphona into the Northern and Southern clades. Population genetic clustering also shows a sharp genetic break, which is concordant with these clades. Admixture was observed between the Northern clade and another chorus frog species (P. feriarum). Analysis of advertisement calls shows a divergent, faster pulse rate, and higher dominant frequency call for the Southern clade in comparison to the Northern clade and other trilling chorus frogs. Furthermore, species distribution models showed that habitat suitability for the Southern clade included pine-dominated and drier areas compared to the Northern clade. In light of the genetic, acoustic, and ecological divergence between the clades, we propose to elevate the taxonomic status of the Southern clade and name this new species the Collinses' Mountain Chorus Frog (P. collinsorum, new species). The new species ranges across northern Alabama, and extends into Georgia, eastern Mississippi, and southern Tennessee. Pseudacris collinsorum, new species, is geographically separated from its sister species, P. brachyphona, by the Tennessee River and surrounding Blue Ridge Escarpment. This study highlights the need for genus-wide, population-level genetic assessments and integrative data sets to uncover diversity within anurans.

  • Hierarchical Hybrid Enrichment: Multitiered Genomic Data Collection Across Evolutionary Scales, With Application to Chorus Frogs (Pseudacris).
    Systematic biology, 2019
    Co-Authors: Sarah E Banker, Hannah F. Ralicki, Alan R. Lemmon, Alyssa T B Hassinger, Mysia Dye, Sean D. Holland, Michelle L Kortyna, Oscar E. Ospina, Emily Moriarty Lemmon
    Abstract:

    Determining the optimal targets of genomic subsampling for phylogenomics, phylogeography, and population genomics remains a challenge for evolutionary biologists. Of the available methods for subsampling the genome, hybrid enrichment (sequence capture) has become one of the primary means of data collection for systematics, due to the flexibility and cost efficiency of this approach. Despite the utility of this method, information is lacking as to what genomic targets are most appropriate for addressing questions at different evolutionary scales. In this study, first, we compare the benefits of target loci developed for deep- and shallow scales by comparing these loci at each of three taxonomic levels: within a genus (phylogenetics), within a species (phylogeography), and within a hybrid zone (population genomics). Specifically, we target evolutionarily conserved loci that are appropriate for deeper phylogenetic scales and more rapidly evolving loci that are informative for phylogeographic and population genomic scales. Second, we assess the efficacy of targeting multiple-locus sets for different taxonomic levels in the same hybrid enrichment reaction, an approach we term hierarchical hybrid enrichment. Third, we apply this approach to the North American chorus frog genus Pseudacris to answer key evolutionary questions across taxonomic and temporal scales. We demonstrate that in this system the type of genomic target that produces the most resolved gene trees differs depending on the taxonomic level, although the potential for error is substantially lower for the deep-scale loci at all levels. We successfully recover data for the two different locus sets with high efficiency. Using hierarchical data targeting deep and shallow levels: we 1) resolve the phylogeny of the genus Pseudacris and introduce a novel visual and hypothesis testing method that uses nodal heat maps to examine the robustness of branch support values to the removal of sites and loci; 2) estimate the phylogeographic history of Pseudacris feriarum, which reveals up to five independent invasions leading to sympatry with congener Pseudacris nigrita to form replicated reinforcement contact zones with ongoing gene flow into sympatry; and 3) quantify with high confidence the frequency of hybridization in one of these zones between P. feriarum and P. nigrita, which is lower than microsatellite-based estimates. We find that the hierarchical hybrid enrichment approach offers an efficient, multitiered data collection method for simultaneously addressing questions spanning multiple evolutionary scales. [Anchored hybrid enrichment; heat map; hybridization; phylogenetics; phylogeography; population genomics; reinforcement; reproductive character displacement.].

  • Illumina Read Data
    2016
    Co-Authors: Lisa N. Barrow, Hannah F. Ralicki, Sandra A. Emme, Emily Moriarty Lemmon
    Abstract:

    Illumina MiSeq paired reads by individual for 44 individuals (40 Pseudacris, 2 Hyla cinerea, 2 Acris gryllus). IDs correspond to those in Table 1 of the publication

  • Sensory drive does not explain reproductive character displacement of male acoustic signals in the upland chorus frog (Pseudacris feriarum).
    Evolution; international journal of organic evolution, 2014
    Co-Authors: John H. Malone, Jessica V. Ribado, Emily Moriarty Lemmon
    Abstract:

    Biotic and abiotic factors have been proposed to explain patterns of reproductive character displacement, but which factor is most important to character displacement of acoustic signals is not clear. Male vocalizations of the frog Pseudacris feriarum are known to undergo reproductive character displacement in areas of sympatry with P. brimleyi and P. nigrita. Despite evidence for reinforcement as an important mechanism, local adaptation via sensory drive might explain this pattern because Pseudacris breed in different habitat types and mating signals are exposed to a variety of environments. We tested the sensory drive hypothesis by playing synthesized vocalizations representing the spectrum of variation in P. feriarum at 12 different study sites. If sensory drive has occurred, then vocalizations should transmit better in the site of origin or at ecologically similar sites. We found that variation in acoustic signals did not produce better transmission in particular sites, the effect of site was uniform, and acoustic signals often transmitted better in habitats external to their origin. Ecological variation among habitats did not explain signal degradation. Our playback experiments, ecological analyses, and comparisons of different habitat types provide no support for sensory drive as a process promoting reproductive character displacement in this system. Reinforcement is the more likely primary mechanism.

  • Development and characterization of 24 microsatellite loci for the Illinois chorus frog ( Pseudacris illinoensis ) and Strecker’s chorus frog ( P. streckeri )
    Conservation Genetics Resources, 2014
    Co-Authors: Lisa N. Barrow, Christopher A. Phillips, Emily Moriarty Lemmon
    Abstract:

    The Illinois chorus frog (Pseudacris illinoensis), originally described as a subspecies of Strecker’s chorus frog (P. streckeri), has a disjunct distribution in Illinois, Missouri, and Arkansas. Populations of P. illinoensis are threatened by habitat loss caused by current agricultural practices, but this taxon has not yet been assessed for the IUCN Red List. We developed 24 microsatellite loci to study the genetic structure of P. illinoensis and P. streckeri, investigate the evolutionary history of this species complex, and help inform conservation efforts. The number of alleles ranged from 4 to 13, observed heterozygosities from 0.214 to 0.889, and expected heterozygosities from 0.476 to 0.899, indicating these markers will be useful for studying population genetic variation.

David C Cannatella - One of the best experts on this subject based on the ideXlab platform.

  • A new North American chorus frog species (Amphibia: Hylidae: Pseudacris) from the south-central United States
    Zootaxa, 2008
    Co-Authors: Emily Moriarty Lemmon, Alan R. Lemmon, Joseph T. Collins, David C Cannatella
    Abstract:

    We describe a new species of chorus frog of the North American treefrog genus Pseudacris from the south-central United States. This new species is morphologically similar to the parapatric species P. feriarum and has thus previously been considered synonymous with this species. The new species is geographically distinct from P. feriarum and from its sister species, P. nigrita . We diagnose the new species based on advertisement call, morphological, and genetic characters.

  • Phylogeny-based delimitation of species boundaries and contact zones in the trilling chorus frogs (Pseudacris).
    Molecular phylogenetics and evolution, 2007
    Co-Authors: Emily Moriarty Lemmon, Alan R. Lemmon, Joseph T. Collins, Julie A. Lee-yaw, David C Cannatella
    Abstract:

    Although the trilling chorus frogs (subclade within Pseudacris: Hylidae) have been important in studies of speciation, continental patterns of genetic diversity within and among species have not been elucidated. As a result, this North American clade has been the subject of substantial taxonomic debate. In this study, we examined the phylogenetic relationships among the trilling Pseudacris and tested previously hypothesized scenarios for speciation using 2.4 kb of mitochondrial 12S and 16S rRNA genes from 253 populations. Bayesian phylogenetic analyses, in combination with published morphological and behavioral data, support recognition of at least nine species, including an undescribed species from the south-central United States. Evidence is presented for substantial geographic subdivision within P. brachyphona (northern and southern clades) and P. feriarum (coastal and inland clades). Discordance between morphology/behavior and molecular data in several individuals suggests occasional hybridization between sympatric species. These results require major revision of range limits for several taxa, in particular, P. maculata, P. triseriata, and P. feriarum. Hypothesis tests using parametric bootstrapping strongly reject previously proposed scenarios for speciation in the group. The tests also support recognition of the geographically restricted taxon P. kalmi as a distinct species. Results of this study provide both a firm phylogenetic basis for future studies of speciation in the trilling Pseudacris and a taxonomic framework for conservation efforts.

  • phylogenetic relationships of the north american chorus frogs Pseudacris hylidae
    Molecular Phylogenetics and Evolution, 2004
    Co-Authors: Emily C Moriarty, David C Cannatella
    Abstract:

    Abstract We examined phylogenetic relationships of the North American chorus frogs (Pseudacris: Hylidae) from 38 populations using 2.4 kb of 12S and 16S mtDNA to elucidate species relationships and examine congruence of previous phylogenetic hypotheses. Parsimony, maximum likelihood, and Bayesian phylogenies are consistent and reveal four strongly supported clades within Pseudacris: (1) A West Coast Clade containing regilla and cadaverina, (2) a Fat Frog Clade including ornata, streckeri, and illinoensis, (3) a Crucifer Clade consisting of crucifer and ocularis, and (4) a Trilling Frog Clade containing all other Pseudacris. Explicit hypothesis testing using parametric bootstrapping indicates that previous phylogenetic hypotheses are rejected by our sequence dataset. Within the Trilling Frog Clade, brimleyi and brachyphona form the sister group to the Nigrita Clade: nigrita, feriarum, triseriata, kalmi, clarkii, and maculata. The Nigrita Clade shows geographic division into three clades: (1) populations of maculata and triseriata west of the Mississippi River and Canadian populations, (2) southeastern US populations of feriarum and nigrita, and (3) northeastern US populations of feriarum, kalmi, and triseriata. We find that subspecific epithets for crucifer (crucifer and bartramiana) and nigrita (nigrita and verrucosa) are uninformative, therefore we discourage recognition of these subspecies. Pseudacris regilla, cadaverina, ocularis, and crucifer are maintained in Pseudacris.

Heidy L Contreras - One of the best experts on this subject based on the ideXlab platform.

Chelsea Alvarez - One of the best experts on this subject based on the ideXlab platform.

Haas Alexander - One of the best experts on this subject based on the ideXlab platform.

  • Pseudacris streckeri AMNH A184936, unstained CT volume
    2020
    Co-Authors: Engelkes Karolin, Haas Alexander
    Abstract:

    Species: Pseudacris streckeri Collection number: AMNH A184936 Institution of origin: American Museum of Natural History, New York Data: CT volume of unstained specimen Coverage: full specimen Scanner: Skyscan1172 Scanning paramters: 55 kV; 179 µA; filter: Al 0.5 mm Voxel size: 21.34472 µmDataset used in: Engelkes, K., Kath, L., Kleinteich, T., Hammel, J. U., Beerlink, A., Haas, A. (2020) Ecomorphology of the pectoral girdle in anurans (Amphibia, Anura): Shape diversity and biomechanical considerations. Ecology and Evolution 10(20): 11467–11487. https://doi.org/10.1002/ece3.6784

  • Pseudacris triseriata CAS 188145, unstained CT volume
    2020
    Co-Authors: Engelkes Karolin, Haas Alexander
    Abstract:

    Species: Pseudacris triseriata Collection number: CAS 188145 Institution of origin: California Academy of Sciences, San Francisco Data: CT volume of unstained specimen Coverage: full specimen Scanner: Skyscan1172 Scanning paramters: 49 kV; 200 µA; filter: Al 0.5 mm Voxel size: 18.67658 µmDataset used in: Engelkes, K., Kath, L., Kleinteich, T., Hammel, J. U., Beerlink, A., Haas, A. (2020) Ecomorphology of the pectoral girdle in anurans (Amphibia, Anura): Shape diversity and biomechanical considerations. Ecology and Evolution 10(20): 11467–11487. https://doi.org/10.1002/ece3.6784

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