4 Works

An analysis of avian vocal performance at the note and song levels

David Logue, Jacob Sheppard, Bailey Walton, Benjamin Brinkman & Orlando Medina
Sexual displays that require extreme feats of physiological performance have the potential to reliably indicate the signaller’s skill or motivation. We tested for evidence of performance constraints in Adelaide’s warblers (Setophaga adelaidae) songs. At the note level, we identified three trade-offs with well-defined limits. At the song level, we identified two trade-offs, but their limits were less well-defined than the note-level limits. Trade-offs at both levels suggest that song structure is constrained by limits to...

Data from: Landscape effects on the contemporary genetic structure of Ruffed Grouse (Bonasa umbellus) populations

Ashley M. Jensen, Nicholas P. O'Neil, Andrew N. Iwaniuk & Theresa M. Burg
The amount of dispersal that occurs among populations can be limited by landscape heterogeneity, which is often due to both natural processes and anthropogenic activity leading to habitat loss or fragmentation. Understanding how populations are structured and mapping existing dispersal corridors among populations is imperative to both determining contemporary forces mediating population connectivity, and informing proper management of species with fragmented populations. Furthermore, the contemporary processes mediating gene flow across heterogeneous landscapes on a large...

Climate induced stress and mortality in vervet monkeys

Christopher Young, Tyler Bonnell, Leslie Brown, Marcus Dostie, André Ganswindt, Stefan Kienzle, Richard McFarland, Peter Henzi & Louise Barrett
As the effects of global climate change become more apparent, animal species will become increasingly affected by extreme climate and its effect on the environment. There is a pressing need to understand animal physiological and behavioural responses to climatic stressors. We used the reactive scope model as a framework to investigate the influence of drought conditions on vervet monkey (Chlorocebus pygerythrus) behaviour, physiological stress and survival across 2.5-years in South Africa. Data were collected on...

Data from: Parental age effects and the evolution of senescence

Patrick Barks & Robert Laird
Most theory on the evolution of senescence implicitly assumes that all offspring are of equal quality. However, in addition to age-related declines in survival and fecundity (classically-defined senescence), many organisms exhibit age-related declines in offspring quality, a phenomenon known as a parental age effect. Theoretical work suggests that parental age effects may alter age-trajectories of selection and therefore shape the evolution of senescence; however, to date, these analyses have been limited to idealized life cycles,...

Registration Year

  • 2019
    4

Resource Types

  • Dataset
    4

Affiliations

  • University of Lethbridge
    4
  • University of Pretoria
    1
  • University of Wisconsin–Madison
    1
  • University of South Africa
    1
  • United States Fish and Wildlife Service
    1