8 Works

Data from: Functional and population genomic divergence within and between two species of killifish adapted to different osmotic niches

Genevieve M. Kozak, Reid S. Brennan, Emma L. Berdan, Rebecca C. Fuller & Andrew Whitehead
Adaptation to salinity affects species distributions, promotes speciation, and guides many evolutionary patterns in fishes. To uncover the basis of a complex trait like osmoregulation, genome-level analyses are sensible. We combine population genomic scans with genome expression profiling to discover candidate genes and pathways associated with divergence between osmotic environments. We compared transcriptome sequence divergence between multiple freshwater and saltwater populations of the rainwater killifish, Lucania parva. We also compared sequence divergence between L. parva...

Data from: The effects of insects, nutrients, and plant invasion on community structure and function above- and belowground

Phoebe Wright, Melissa A. Cregger, Lara Souza, Nathan J. Sanders & Aimée T. Classen
Soil nutrient availability, invasive plants, and insect presence can directly alter ecosystem structure and function, but less is known about how these factors may interact. In this 6-year study in an old-field ecosystem, we manipulated insect abundance (reduced and control), the propagule pressure of an invasive nitrogen-fixing plant (propagules added and control), and soil nutrient availability (nitrogen added, nitrogen reduced and control) in a fully crossed, completely randomized plot design. We found that nutrient amendment...

Data from: Differences in offspring size predict the direction of isolation asymmetry between populations of a placental fish

Matthew Schrader, Rebecca C. Fuller & Joseph Travis
Crosses between populations or species often display an asymmetry in the fitness of reciprocal F1 hybrids. This pattern, referred to as isolation asymmetry or Darwin’s Corollary to Haldane’s rule, has been observed in taxa from plants to vertebrates, yet we still know little about which factors determine its magnitude and direction. Here we show that differences in offspring size predict the direction of isolation asymmetry observed in crosses between populations of a placental fish, Heterandria...

Data from: Diurnal lighting patterns and habitat alter opsin expression and colour preferences in a killifish

Ashley M. Johnson, Shannon Stanis & Rebecca C. Fuller
Spatial variation in lighting environments frequently leads to population variation in colour patterns, colour preferences and visual systems. Yet lighting conditions also vary diurnally, and many aspects of visual systems and behaviour vary over this time scale. Here, we use the bluefin killifish (Lucania goodei) to compare how diurnal variation and habitat variation (clear versus tannin-stained water) affect opsin expression and the preference to peck at different-coloured objects. Opsin expression was generally lowest at midnight...

Data from: Constraints on mammalian forelimb development: insights from developmental disparity

Darcy L. Ross, Jonathan D. Marcot, Keith J. Betteridge, Nanette Nasone-Yoder, C. Scott Bailey, Karen E. Sears, Darcy Ross & Nanette Nascone-Yoder
Tetrapod limb development has been studied extensively for decades, yet the strength and role of developmental constraints in this process remains unresolved. Mammals exhibit a particularly wide array of limb morphologies associated with various locomotion modes and behaviors, providing a useful system for identifying periods of developmental constraint and conserved developmental mechanisms or morphologies. In this study, landmark-based geometric morphometrics are used to investigate levels and patterns of morphological diversity (disparity) among the developing forelimbs...

Data from: Female mate preferences for male body size and shape promote sexual isolation in threespine sticklebacks

Megan L. Head, Genevieve M. Kozak & Janette W. Boughman
Female mate preferences for ecologically relevant traits may enhance natural selection, leading to rapid divergence. They may also forge a link between mate choice within species and sexual isolation between species. Here, we examine female mate preference for two ecologically important traits: body size and body shape. We measured female preferences within and between species of benthic, limnetic, and anadromous threespine sticklebacks (Gasterosteus aculeatus species complex). We found that mate preferences differed between species and...

Data from: Modelling distributions of fossil sampling rates over time, space and taxa: assessment and implications for macroevolutionary studies

Peter J. Wagner & Jonathan D. Marcot
1. Observed patterns in the fossil record reflect not just macroevolutionary dynamics, but preservation patterns. Sampling rates themselves vary not simply over time or among major taxonomic groups, but within time intervals over geography and environment, and among species within clades. Large databases of presences of taxa in fossil-bearing collections allow us to quantify variation in per-collection sampling rates among species within a clade. We do this separately not just for different time/stratigraphic intervals, but...

Data from: Rates of genomic divergence in humans, chimpanzees and their lice

Kevin P. Johnson, Julie M. Allen, Brett P. Olds, Lawrence Mugisha, David L. Reed, Ken N. Paige & Barry R. Pittendrigh
The rate of DNA mutation and divergence is highly variable across the tree of life. However, the reasons underlying this variation are not well understood. Comparing the rates of genetic changes between hosts and parasite lineages that diverged at the same time is one way to begin to understand differences in genetic mutation and substitution rates. Such studies have indicated that the rate of genetic divergence in parasites is often faster than that of their...

Registration Year

  • 2013
    8

Resource Types

  • Dataset
    8

Affiliations

  • University of Illinois System
    8
  • University of Illinois at Urbana Champaign
    2
  • Smithsonian Institution
    1
  • University of Guelph
    1
  • University of Tennessee at Knoxville
    1
  • University of Chicago
    1
  • University of Oklahoma
    1
  • University of Florida
    1
  • University of Copenhagen
    1
  • Makerere University
    1