2 Works

Data from: Stress hormone receptors change as range expansion progresses in house sparrows

Andrea L. Liebl & Lynn B. Martin
As ranges expand, individuals encounter different environments at the periphery than at the centre of the range. Previously, we have shown that glucocorticoids (GCs) vary with range expansion: individuals at the range edge release more GCs in response to restraint. Here, we measured hippocampal mRNA expression of GC receptors (mineralocorticoid, MR and glucocorticoid, GR) in eight house sparrow (Passer domesticus) populations varying in age. We found that individuals closest to the range edge had the...

Data from: Range expansion of house sparrows (Passer domesticus) in Kenya: evidence of genetic admixture and human-mediated dispersal

Aaron W. Schrey, Andrea L. Liebl, Christina L. Richards & Lynn B. Martin
Introduced species offer an opportunity to study the ecological process of range expansions. Recently, 3 mechanisms have been identified that may resolve the genetic paradox (the seemingly unlikely success of introduced species given the expected reduction in genetic diversity through bottlenecks or founder effects): multiple introductions, high propagule pressure, and epigenetics. These mechanisms are probably also important in range expansions (either natural or anthropogenic), yet this possibility remains untested in vertebrates. We used microsatellite variation...

Registration Year

  • 2013
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Resource Types

  • Dataset
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Affiliations

  • University of South Florida
    2
  • Armstrong Atlantic State University
    1
  • University of Exeter
    1