6 Works

Data from: Early breeding females experience greater telomere loss

Jessica L. Graham, Carolyn M. Bauer, Britt J. Heidinger, Ellen D. Ketterson & Timothy J. Greives
Annual reproductive success is often highest in individuals that initiate breeding early, yet relatively few individuals start breeding during this apparently optimal time. This suggests that individuals, particularly females who ultimately dictate when offspring are born, incur costs by initiating reproduction early in the season. We hypothesized that increases in the aging rate of somatic cells may be one such cost. Telomeres, the repetitive DNA sequences on the ends of chromosomes, may be good proxies...

Data from: Seasonally sympatric but allochronic: differential expression of hypothalamic genes in a songbird during gonadal development

Carolyn M. Bauer, Adam M. Fudickar, Skylar Anderson-Buckingham, Mikus Abolins-Abols, Jonathan W. Atwell, Ellen D. Ketterson & Timothy J. Greives
Allochrony, the mismatch of reproductive schedules, is one mechanism that can mediate sympatric speciation and diversification. In songbirds, the transition into breeding condition and gonadal growth is regulated by the hypothalamic-pituitary-gonadal (HPG) axis at multiple levels. We investigated whether the difference in reproductive timing between two, seasonally sympatric subspecies of dark-eyed juncos (Junco hyemalis) was related to gene expression along the HPG axis. During the sympatric pre-breeding stage, we measured hypothalamic and testicular mRNA expression...

Data from: Phenotypic integration in an extended phenotype: among‐individual variation in nest‐building traits of the alfalfa leafcutting bee (Megachile rotundata)

Raphaël Royauté, Elisabeth S. Wilson, Bryan R. Helm, Rachel E. Malinger, Jarrad Prasifka, Kendra J. Greenlee & Julia H. Bowsher
Structures such as nests and burrows are an essential component of many organisms’ life-cycle and requires a complex sequence of behaviors. Because behaviors can vary consistently among individuals and be correlated with one another, we hypothesized that these structures would 1) show evidence of among-individual variation, 2) be organized into distinct functional modules, and 3) show evidence of trade-offs among functional modules due to limits on energy budgets. We tested these hypotheses using the alfalfa...

Data from: Habitat associations of bats in a working rangeland landscape

Rebecca T. Trubitt, Torre J. Hovick, Erin H. Gillam & Devan A. McGranahan
1. Land-use change has resulted in rangeland loss and degradation globally. These changes include conversion of native grasslands for row-crop agriculture as well as degradation of remaining rangeland due to fragmentation and changing disturbance regimes. Understanding how these and other factors influence wildlife use of rangelands is important for conservation and management of wildlife populations. 2. We investigated bat habitat associations in a working rangeland in southeastern North Dakota. We used Petterson d500x acoustic detectors...

Data from: Landscape genetics reveal broad and fine‐scale population structure due to landscape features and climate history in the northern leopard frog (Rana pipiens) in North Dakota

Justin M. Waraniak, Justin D. L. Fisher, Kevin Purcell, David M. Mushet & Craig A. Stockwell
Prehistoric climate and landscape features play large roles structuring wildlife populations. The amphibians of the northern Great Plains of North America present an opportunity to investigate how these factors affect colonization, migration, and current population genetic structure. This study used 11 microsatellite loci to genotype 1230 northern leopard frogs (Rana pipiens) from 41 wetlands (30 samples/wetland) across North Dakota. Genetic structure of the sampled frogs was evaluated using Bayesian and multivariate clustering methods. All analyses...

Data from: Paceless life? a meta-analysis of the pace-of-life syndrome hypothesis

Raphaël Royauté, Monica Anderson Berdal, Courtney R. Garrison & Ned A. Dochtermann
The pace-of-life syndrome hypothesis predicts that individual differences in behaviour should integrate with morphological, physiological, and life-history traits along a slow to fast pace-of-life continuum. For example, individuals with a “slow” pace-of-life are expected to exhibit a slower growth rate, delayed reproduction, longer lifespans, have stronger immune responses, and are expected to avoid risky situations relative to “fast” individuals. If supported this hypothesis would help resolve ecological and evolutionary questions regarding the origin and maintenance...

Registration Year

  • 2018
    6

Resource Types

  • Dataset
    6

Affiliations

  • North Dakota State University
    6
  • Adelphi University
    2
  • Indiana University Bloomington
    2
  • Agricultural Research Service
    1