Data from: A hybrid phylogenetic–phylogenomic approach for species tree estimation in African Agama lizards with applications to biogeography, character evolution, and diversificationAdam D. Leaché, Philipp Wagner, Charles W. Linkem, Wolfgang Böhme, Theodore J. Papenfuss, Rebecca A. Chong, Brian R. Lavin, Aaron M. Bauer, Stuart V. Nielsen, Eli Greenbaum, Mark-Oliver Rödel, Andreas Schmitz, Matthew LeBreton, Ivan Ineich, Laurent Chirio, Caleb Ofori-Boateng, Edem A. Eniang, Sherif Baha El Din, Alan R. Lemmon & Frank T. Burbrink
Africa is renowned for its biodiversity and endemicity, yet little is known about the factors shaping them across the continent. African Agama lizards (45 species) have a pan-continental distribution, making them an ideal model for investigating biogeography. Many species have evolved conspicuous sexually dimorphic traits, including extravagant breeding coloration in adult males, large adult male body sizes, and variability in social systems among colorful versus drab species. We present a comprehensive time-calibrated species tree for...
Data from: Effectiveness of phylogenomic data and coalescent species-tree methods for resolving difficult nodes in the phylogeny of advanced snakes (Serpentes: Caenophidia)R. Alexander Pyron, Catriona R. Hendry, Vincent M. Chou, Emily M. Lemmon, Alan R. Lemmon & Frank T. Burbrink
Next-generation genomic sequencing promises to quickly and cheaply resolve remaining contentious nodes in the Tree of Life, and facilitates species-tree estimation while taking into account stochastic genealogical discordance among loci. Recent methods for estimating species trees bypass full likelihood-based estimates of the multi-species coalescent, and approximate the true species-tree using simpler summary metrics. These methods converge on the true species-tree with sufficient genomic sampling, even in the anomaly zone. However, no studies have yet evaluated...
Mutualisms play a central role in the origin and maintenance of biodiversity. Because many mutualisms have strong demographic effects, interspecific variation in partner quality could have important consequences for population dynamics. Nevertheless, few studies have quantified how a mutualist partner influences population growth rates, and still fewer have compared the demographic impacts of multiple partner species. We used integral projection models parameterized with three years of census data to compare the demographic effects of two...
Data from: Contemporary population structure and post-glacial genetic demography in a migratory marine species, the blacknose shark, Carcharhinus acronotusDavid Portnoy, Christopher Hollenbeck, Carolyn Belcher, , Bryan Frazier, Jim Gelsleichter, R. D. Grubbs, John Gold, D. S. Portnoy, C. M. Hollenbeck, J. R. Gold, C. N. Belcher, B. S. Frazier & W. B. Driggers
Patterns of population structure and historical genetic demography of blacknose sharks in the western North Atlantic Ocean were assessed using variation in nuclear-encoded microsatellites and sequences of mitochondrial (mt)DNA. Significant heterogeneity and/or inferred barriers to gene flow, based on microsatellites and/or mtDNA, revealed the occurrence of five genetic populations localized to five geographic regions: the southeastern U.S Atlantic coast, the eastern Gulf of Mexico, the western Gulf of Mexico, Campeche Bay in the southern Gulf...
Data from: The utility of cranial ontogeny for phylogenetic inference: a case study in crocodylians using geometric morphometricsAkinobu Watanabe & Dennis E. Slice
The degree to which the ontogeny of organisms could facilitate our understanding of phylogenetic relationships has long been a subject of contention in evolutionary biology. The famed notion that ‘ontogeny recapitulates phylogeny’ has been largely discredited, but there remains an expectation that closely related organisms undergo similar morphological transformations throughout ontogeny. To test this assumption, we used three-dimensional geometric morphometric methods to characterize the cranial morphology of 10 extant crocodylian species and construct allometric trajectories...
1. Intraspecific diversity can have important effects on population, community and ecosystem processes, yet we have little understanding of the relative importance of genetic- vs. trait-based measures of intraspecific diversity. 2. I conducted a manipulative field experiment of plant (Spartina alterniflora) genotypic diversity and trait diversity to examine their independent and interactive effects on plant performance and community structure. I focused on variation within and among genotypes in plant stem height, a trait that varies...
Data from: Sensory drive does not explain reproductive character displacement of male acoustic signals in the Upland Chorus Frog (Pseudacris feriarum)Emily Claire Moriarty Lemmon, Jessica Ribado, John H. Malone & Emily Moriarty Lemmon
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...
Data from: Species tree estimation of North American chorus frogs (Hylidae: Pseudacris) with parallel tagged amplicon sequencingLisa N. Barrow, Hannah F. Ralicki, Sandra A. Emme & Emily Moriarty Lemmon
The field of phylogenetics is changing rapidly with the application of high-throughput sequencing to non-model organisms. Cost-effective use of this technology for phylogenetic studies, which often include a relatively small portion of the genome but several taxa, requires strategies for genome partitioning and sequencing multiple individuals in parallel. In this study we estimated a multilocus phylogeny for the North American chorus frog genus Pseudacris using anonymous nuclear loci that were recently developed using a reduced...
Data from: Myelin basic protein induces neuron-specific toxicity by directly damaging the neuronal plasma membraneJie Zhang, Xin Sun, Sixin Zheng, Xiao Liu, Jinghua Jin, Yi Ren & Jianhong Luo
The central nervous system (CNS) insults may cause massive demyelination and lead to the release of myelin-associated proteins including its major component myelin basic protein (MBP). MBP is reported to induce glial activation but its effect on neurons is still little known. Here we found that MBP specifically bound to the extracellular surface of the neuronal plasma membrane and induced neurotoxicity in vitro. This effect of MBP on neurons was basicity-dependent because the binding was...
Data from: Female mating preferences and offspring survival: testing hypotheses on the genetic basis of mate choice in a wild lekking birdRebecca J. Sardell, Bart Kempenaers & Emily H. DuVal
Indirect benefits of mate choice result from increased offspring genetic quality and may be important drivers of female behaviour. ‘Good-genes-for-viability’ models predict that females prefer mates of high additive genetic value, such that offspring survival should correlate with male attractiveness. Mate choice may also vary with genetic diversity (e.g. heterozygosity) or compatibility (e.g. relatedness), where the female's genotype influences choice. The relative importance of these nonexclusive hypotheses remains unclear. Leks offer an excellent opportunity to...
Data from: Phenotypic and genomic plasticity of alternative male reproductive tactics in sailfin molliesBonnie A. Fraser, Ilana Janowitz, Margaret Thairu, Joseph Travis & Kimberly A. Hughes
A major goal of modern evolutionary biology is to understand the causes and consequences of phenotypic plasticity, the ability of a single genotype to produce multiple phenotypes in response to variable environments. While ecological and quantitative genetic studies have evaluated models of the evolution of adaptive plasticity, some long-standing questions about plasticity require more mechanistic approaches. Here, we address two of those questions: does plasticity facilitate adaptive evolution? And do physiological costs place limits on...
Many invasive species can respond opportunistically to favorable growing conditions. In a previous work, we found that invasive species in the family Commelinaceae were more opportunistic than their noninvasive congeners and could therefore outperform noninvasive relatives in an environment with abundant resources and no competition. Contrary to the expectation that superior performance under favorable conditions comes at the cost of reduced performance under stressful conditions, invasive species did not perform more poorly relative to noninvasive...
Florida State University12
Max Planck Institute for Ornithology1
University of Washington1
University of California System1
George Washington University1
University of Uyo1
Georgia Department of Natural Resources1
University of North Florida1
Texas A&M University – Corpus Christi1