9 Works

Data from: Natural hybridization between divergent lineages in a selfing hermaphroditic fish

Andrey Tatarenkov, Ryan L. Earley, D.S. Taylor, William P. Davis & John C. Avise
By definition, mating between individuals is infrequent in highly selfing organisms, and so too, therefore, hybridization should be rare between genetically divergent lineages in predominantly self-fertilizing species. Notwithstanding these expectations, here we report a remarkable case of natural hybridization between highly diverged phylogeographic lineages of the mangrove rivulus, a small killifish that reproduces predominantly by self-fertilization and typically is found as highly homozygous lines in most parts of its extensive geographic range. Two distinctive genetic...

Data from: Specimen-based analysis of morphology and the environment in ecologically dominant grasses: the power of the herbarium

Christine A. McAllister, Michael R. McKain, Mao Li, Bess Bookout & Elizabeth A. Kellogg
Herbaria contain a cumulative sample of the world’s flora, assembled by thousands of people over several hundred years. Recent advances in computation, DNA sequencing, and image manipulation have allowed us to capitalize on this resource. Using herbarium material, we conducted a species-level analysis of a major clade in the grass tribe Andropogoneae, which includes the dominant species of the world’s grasslands, from the genera Andropogon, Schizachyrium, Hyparrhenia, and other groups. We imaged 188 of the...

Data from: Development of G: a test in an amphibious fish

Joseph M. Styga, Thomas M. Houslay, Alastair J. Wilson & Ryan L. Earley
Heritable variation in, and genetic correlations among, traits determine the response of multivariate phenotypes to natural selection. However, as traits develop over ontogeny, patterns of genetic (co)variation and integration captured by the G matrix may also change. Despite this, few studies have investigated how genetic parameters underpinning multivariate phenotypes change as animals pass through major life history stages. Here, using a self-fertilizing hermaphroditic fish species, mangrove rivulus (Kryptolebias marmoratus), we test the hypothesis that G...

Data from: Step-wise evolution of complex chemical defenses in millipedes: a phylogenomic approach

Juanita Rodriguez, Tappey H. Jones, Petra Sierwald, Paul E. Marek, William A. Shear, Michael S. Brewer, Kevin M. Kocot & Jason E. Bond
With fossil representatives from the Silurian capable of respiring atmospheric oxygen, millipedes are among the oldest terrestrial animals, and likely the first to acquire diverse and complex chemical defenses against predators. Exploring the origin of complex adaptive traits is critical for understanding the evolution of Earth’s biological complexity, and chemical defense evolution serves as an ideal study system. The classic explanation for the evolution of complexity is by gradual increase from simple to complex, passing...

Data from: Developmental plasticity of the stress response in female but not male guppies

Laura Chouinard-Thuly, Adam R. Reddon, Ioannis Leris, Ryan L. Earley & Simon M. Reader
To survive, animals must respond appropriately to stress. Stress responses are costly, so early-life experiences with potential stressors could adaptively tailor adult stress responses to local conditions. However, how multiple stressors influence the development of the stress response remains unclear, as is the role of sex. Trinidadian guppies (Poecilia reticulata) are small fish with extensive life history differences between the sexes and population variation in predation pressure and social density. We investigated how sex and...

Data from: Distance, elevation, and environment as drivers of diversity and divergence in bumble bees across latitude and altitude

Jason M. Jackson, Meaghan L. Pimsler, Kennan Jeannet Oyen, Jonathan B. Koch-Uhuad, James D. Herndon, James P. Strange, Michael E. Dillon & Jeffrey D. Lozier
Identifying drivers of dispersal limitation and genetic differentiation is a key goal in biogeography. We examine patterns of population connectivity and genetic diversity using Restriction-site Associated DNA sequencing (RADseq) in two bumble bee species, Bombus vosnesenskii and Bombus bifarius across latitude and altitude in mountain ranges from California, Oregon, and Washington, U.S.A. Bombus vosnesenskii, which occurs across a broader elevational range at most latitudes, exhibits little population structure while B. bifarius, which occupies a relatively...

Data from: Real or fake? natural and artificial social stimuli elicit divergent behavioral and neural responses in mangrove rivulus, Kryptolebias marmoratus

Cheng-Yu Li, Hans A. Hofmann, Melissa L. Harris & Ryan L. Earley
Understanding how the brain processes social information and generates adaptive behavioural responses is a major goal in neuroscience. We examined behaviour and neural activity patterns in socially relevant brain nuclei of hermaphroditic mangrove rivulus fish (Kryptolebias marmoratus) provided with different types of social stimuli: stationary model opponent, regular mirror, non-reversing mirror and live opponent. We found that: i) individuals faced with a regular mirror were less willing to interact with, delivered fewer attacks towards, and...

Data from: Evidence for seasonal variation in δ13C and δ18O profiles of Baculites and implications for growth rate

Nicholas M. Ellis & Thomas S. Tobin
The life histories of ammonites and the life strategies they employed are difficult to assess without robust modern analogues but placing constraints on ammonite growth rates provides a fundamental first step to understanding this abundant, but poorly understood, fossil group. Here we interpret periodic variations in carbon and oxygen stable isotope profiles from Campanian and Maastrichtian ammonites (Baculites) as seasonally driven and use these records to determine their rate of shell precipitation. Several of these...

Data from: Formation of a recent hybrid zone offers insight to the geographic puzzle and maintenance of species boundaries in musk turtles

Peter A. Scott, Travis C. Glenn & Leslie J. Rissler
Speciation is the result of an accumulation of reproductive barriers between populations, pinpointing these factors is often difficult. However, hybrid zones can form when these barriers are not complete, especially when lineages come into contact in intermediate or modified habitats. We examine a hybrid zone between two closely related riverine turtle species, Sternotherus depressus and S. peltifer, and use ddRAD sequencing to to understand how this hybrid zone formed and elucidate genomic patterns of reproductive...

Registration Year

  • 2018

Resource Types

  • Dataset


  • University of Alabama, Tuscaloosa
  • Donald Danforth Plant Science Center
  • New Mexico Institute of Mining and Technology
  • University of Alabama at Birmingham
  • Utah State University
  • The University of Texas at Austin
  • Field Museum of Natural History
  • Culver Stockton College
  • University of Georgia
  • University of Cambridge