10 Works

Data from: Darwinian sex roles confirmed across the animal kingdom

Tim Janicke, Ines K. Häderer, Marc J. Lajeunesse & Nils Anthes
Since Darwin’s conception of sexual selection theory, scientists have struggled to identify the evolutionary forces underlying the pervasive differences between male and female behavior, morphology, and physiology. The Darwin-Bateman paradigm predicts that anisogamy imposes stronger sexual selection on males, which, in turn, drives the evolution of conventional sex roles in terms of female-biased parental care and male-biased sexual dimorphism. Although this paradigm forms the cornerstone of modern sexual selection theory, it still remains untested across...

Data from: Foraging modality and plasticity in foraging traits determine the strength of competitive interactions among carnivorous plants, spiders, and toads

David E. Jennings, James J. Krupa & Jason R. Rohr
1. Foraging modalities (e.g., passive, sit-and-wait, active) and traits are plastic in some species, but the extent to which this plasticity affects interspecific competition remains unclear. 2. Using a long-term laboratory mesocosm experiment, we quantified competition strength and the plasticity of foraging traits in a guild of generalist predators of arthropods with a range of foraging modalities. 3. Each mesocosm contained eight passively foraging pink sundews, and we employed an experimental design where treatments were...

Data from: Host stress hormones alter vector feeding preferences, success, and productivity

Stephanie S. Gervasi, Nathan Burkett-Cadena, Sarah C. Burgan, Aaron W. Schrey, Hassan K. Hassan, Thomas R. Unnasch & Lynn B. Martin
Stress hormones might represent a key link between individual-level infection outcome, population-level parasite transmission, and zoonotic disease risk. Although the effects of stress on immunity are well known, stress hormones could also affect host–vector interactions via modification of host behaviours or vector-feeding patterns and subsequent reproductive success. Here, we experimentally manipulated songbird stress hormones and examined subsequent feeding preferences, feeding success, and productivity of mosquito vectors in addition to defensive behaviours of hosts. Despite being...

Data from: Habitat, predators, and hosts regulate disease in Daphnia through direct and indirect pathways

Alexander T. Strauss, Marta S. Shocket, David J. Civitello, Jessica L. Hite, Rachel M. Penczykowski, Meghan A. Duffy, Carla E. Cáceres & Spencer R. Hall
Community ecology can link habitat to disease via interactions among habitat, focal hosts, other hosts, their parasites, and predators. However, complicated food web interactions (i.e., trophic interactions among predators, and their impacts on host density and diversity) often obscure the important pathways regulating disease. Here, we disentangle community drivers in a case study of planktonic disease, using a two-step approach. In step one, we tested univariate field patterns linking community interactions to two disease metrics....

Data from: Herbivore size matters for productivity-richness relationships in African savannas

Deron E. Burkepile, Richard W. S. Fynn, Dave I. Thompson, Nathan P. Lemoine, Sally E. Koerner, Stephanie Eby, Nicole Hagenah, Kevin R. Wilcox, Scott L. Collins, Kevin P. Kirkman, Alan K. Knapp & Melinda D. Smith
1.Productivity and herbivory often interact to shape plant community composition and species richness with levels of production mediating the impact of herbivory. Yet, differences in herbivore traits such as size, feeding guild, and dietary requirements may result in different impacts of diverse herbivore guilds across productivity gradients. 2.We used size-selective herbivore exclosures to separate the effects of herbivory by larger herbivores, such as elephant, Burchell's zebra, and blue wildebeest from those of medium/smaller herbivores, such...

Data from: Dynamic sinking behaviour in marine phytoplankton: rapid changes in buoyancy may aid in nutrient uptake

Brad J. Gemmell, Genesok Oh, Edward J. Buskey & Tracy A. Villareal
Phytoplankton sinking is an important property that can determine community composition in the photic zone and material loss to the deep ocean. To date, studies of diatom suspension have relied on bulk measurements with assumptions that bulk rates adequately capture the essential characteristics of diatom sinking. However, recent work has illustrated that individual diatom sinking rates vary considerably from the mean bulk rate. In this study, we apply high-resolution optical techniques, individual-based observations of diatom...

Data from: Low-cost fluctuating-temperature chamber for experimental ecology

Sasha E. Greenspan, Wayne Morris, Russell Warburton, Lexie Edwards, Richard Duffy, David A. Pike, Lin Schwarzkopf & Ross A. Alford
Commercially available fluctuating-temperature chambers are large and costly. This poses a challenge to experimental ecologists endeavouring to recreate natural temperature cycles in the laboratory because the large number of commercial chambers required for replicated study designs is prohibitively expensive to purchase, requires a large amount of space and consumes a great deal of energy. We developed and validated a design for economical, programmable fluctuating-temperature chambers based on a relatively small (23 L) commercially manufactured constant...

Data from: Constrained body shape among highly genetically divergent allopatric lineages of the supralittoral isopod Ligia occidentalis (Oniscidea)

Carlos A. Santamaria, Mariana Mateos, Thomas J. DeWitt & Luis A. Hurtado
Multiple highly divergent lineages have been identified within Ligia occidentalis sensu lato, a rocky supralittoral isopod distributed along a ~3000 km latitudinal gradient that encompasses several proposed marine biogeographic provinces and ecoregions in the eastern Pacific. Highly divergent lineages have nonoverlapping geographic distributions, with distributional limits that generally correspond with sharp environmental changes. Crossbreeding experiments suggest postmating reproductive barriers exist among some of them, and surveys of mitochondrial and nuclear gene markers do not show...

Data from: Repeated habitat disturbances by fire decrease local effective population size

Aaron W. Schrey, Alexandria K. Ragsdale, Earl D. McCoy & Henry R. Mushinsky
Effective population size is a fundamental parameter in population genetics, and factors that alter effective population size will shape the genetic characteristics of populations. Habitat disturbance may have a large effect on genetic characteristics of populations by influencing immigration and gene flow, particularly in fragmented habitats. We used the Florida Sand Skink (Plestiodon reynoldsi) to investigate the effect of fire-based habitat disturbances on the effective population size in the highly threatened, severely fragmented, and fire...

Data from: Fire increases genetic diversity of populations of Six-lined Racerunner

Alexandria K. Ragsdale, Bridget M. Frederick, David W. Dukes, Andrea L. Liebl, Kyle G. Ashton, Earl D. McCoy, Henry R. Mushinsky & Aaron W. Schrey
Wildfires are highly variable and can disturb habitats, leading to direct and indirect effects on the genetic characteristics of local populations. Florida scrub is a fire-dependent, highly fragmented, and severely threatened habitat. Understanding the effect of fire on genetic characteristics of the species that use this habitat is critically important. We investigated one such lizard, the Six-lined Racerunner (Aspidoscelis sexlineata), which has a strong preference for open areas. We collected Six-lined Racerunners (n=154) from 11...

Registration Year

  • 2016
    10

Resource Types

  • Dataset
    10

Affiliations

  • University of South Florida
    10
  • The University of Texas at Austin
    1
  • University of Michigan-Ann Arbor
    1
  • University of California System
    1
  • Université Paul-Valéry Montpellier
    1
  • University of Botswana
    1
  • Texas A&M University
    1
  • University of Otago
    1
  • University of Wisconsin-Madison
    1
  • University of Kentucky
    1