32 Works

Relationships between avian malaria resilience and corticosterone, testosterone and prolactin in a Hawaiian songbird

Gabrielle Names, Jesse Krause, Elizabeth Schultz, Frédéric Angelier, Charline Parenteau, Cécile Ribout, Thomas Hahn & John Wingfield
Glucocorticoids, androgens, and prolactin regulate metabolism and reproduction, but they also play critical roles in immunomodulation. Since the introduction of avian malaria to Hawaii a century ago, low elevation populations of the Hawaii Amakihi (Chlorodrepanis virens) that have experienced strong selection by avian malaria have evolved increased resilience (the ability to recover from infection), while high elevation populations that have undergone weak selection remain less resilient. We investigated how variation in malaria selection has affected...

Genetic data and niche differences suggest that disjunct populations of Diglossa brunneiventris are not sister lineages

Juan Luis Parra, Ana Maria Gutiérrez-Zuluaga, Catalina González-Quevedo, Jessica A. Oswald, Ryan S. Terrill & Jorge L. Pérez-Emán
Disjunct distributions within a species are of great interest in systematics and biogeography. This separation can function as a barrier to gene flow when the distance among populations exceeds the dispersal capacity of individuals, and depending on the duration of the barrier, it may eventually lead to speciation. Here we describe patterns of geographic differentiation of two disjunct populations of Diglossa brunneiventris separated by approximately 1000 km along the Andes. Diglossa brunneiventris vuilleumieri is isolated...

Pygmy rabbit landscape genomics in the southern Great Basin

Nathan Byer, Matthew Holding, Miranda Crowell, Todd Pierson, Thomas Dilts, Eveline Larrucea, Kevin Shoemaker & Marjorie Matocq
Local adaptation can occur when spatially separated populations are subjected to contrasting environmental conditions. Historically, understanding the genetic basis of adaptation has been difficult, but increased availability of genome-wide markers facilitates studies of local adaptation in non-model organisms of conservation concern. The pygmy rabbit (Brachylagus idahoensis) is an imperiled lagomorph that relies on sagebrush for forage and cover. This reliance has led to widespread population declines following reductions in the distribution of sagebrush, leading to...

Correlated decision making across multiple phases of olfactory guided search in Drosophila

Floris Van Breugel
All motile organisms must search for food, often requiring the exploration of heterogeneous environments across a wide range of spatial scales. Recent field and laboratory experiments with the fruit fly, Drosophila, have revealed that they employ different strategies across these regimes, including kilometer scale straight-path flights between resource clusters, zig-zagging trajectories to follow odor plumes, and local search on foot after landing. However, little is known about the extent to which experiences in one regime...

Genome-wide RAD sequencing resolves the evolutionary history of serrate leaf Juniperus and reveals discordance with chloroplast phylogeny

Kathryn Uckele, Robert Adams, Thomas Parchman & Andrea Schwarzbach
Juniper (Juniperus) is an ecologically important conifer genus of the Northern Hemisphere, the members of which are often foundational tree species of arid regions. The serrate leaf margin clade is native to topologically variable regions in North America, where hybridization has likely played a prominent role in their diversification. Here we use a reduced-representation sequencing approach (ddRADseq) to generate a phylogenomic data set for 68 accessions representing all 22 species in the serrate leaf margin...

Opposing effects of Ceanothus velutinus phytochemistry on herbivore communities at multiple scales

Casey S. Philbin, Matthew Paulsen & Lora A. Richards
Identifying the interactions of functional, biotic, and abiotic factors that define plant–insect communities has long been a goal of community ecologists. Metabolomics approaches facilitate a broader understanding of how phytochemistry mediates the functional interactions among ecological factors. Ceanothus velutinus communities are a relatively unstudied system for investigating chemically mediated interactions. Ceanothus are nitrogen-fixing, fire-adapted plants that establish early post-fire, and produce antimicrobial cyclic peptides, linear peptides, and flavonoids. This study takes a metabolomic approach to...

Optic flow and odometry data from intelrealsense camera

Floris Van Breugel
Insects rely on the perception of image motion, or optic flow, to estimate their velocity relative to nearby objects. This information provides important sensory input for avoiding obstacles. However, certain behaviors, such as estimating the absolute distance to a landing target, accurately measuring absolute distance travelled, and estimating the ambient wind speed require decoupling optic flow into its component parts: absolute ground velocity and distance to nearby objects. Behavioral experiments suggest that insects perform these...

Registration Year

  • 2021
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Resource Types

  • Dataset
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Affiliations

  • University of Nevada Reno
    32
  • University of Oklahoma
    3
  • University of Michigan-Ann Arbor
    2
  • Oregon State University
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  • University of Wisconsin-Madison
    2
  • Harvard University
    2
  • Wittenberg University
    2
  • University of California, Davis
    2
  • Denver Museum of Nature and Science
    1
  • Baylor University
    1