2 Works

Migratory divides coincide with reproductive barriers across replicated avian hybrid zones above the Tibetan Plateau

Elizabeth Scordato, Chris C. R. Smith, Georgy A. Semenov, Yu Liu, Matthew R. Wilkins, Wei Liang, Alexander Rubtsov, Gomboobaatar Sundev, Kazuo Koyama, Sheela P. Turbek, Michael B. Wunder, Craig A. Stricker & Rebecca Safran
Migratory divides are proposed to be catalysts for speciation across a diversity of taxa. However, it is difficult to test the relative contributions of migratory behavior vs. other divergent traits to reproductive isolation. Comparing hybrid zones with and without migratory divides offers a rare opportunity to directly examine the contribution of divergent migratory behavior to reproductive barriers. We show that across replicate sampling transects of two pairs of barn swallow (Hirundo rustica) subspecies, strong reproductive...

Data from: Life-history strategies indicate live-bearing in Nothosaurus (Sauropterygia)

Eva Maria Griebeler & Nicole Klein
In Sauropterygia, a diverse group of Mesozoic marine reptiles, fossil evidence of viviparity (live‐bearing) only exists for Pachypleurosauria and Plesiosauria, and was assumed to also be the case for nothosaurs. Previous studies have successfully applied an extant squamate model to sauropterygian life‐history traits. In extant squamates, oviparity and viviparity are associated with differences in life‐history trait combinations. We establish growth curves for Nothosaurus specimens based on their humeral histology. We then analyse life‐history traits derived...

Registration Year

  • 2019
    2

Resource Types

  • Dataset
    2

Affiliations

  • Staatliches Museum für Naturkunde Stuttgart
    2
  • University Medical Center of the Johannes Gutenberg University Mainz
    1
  • Queen Mary University of London
    1
  • University of Colorado Denver
    1
  • University of Colorado Boulder
    1
  • Vanderbilt University
    1
  • Hainan Normal University
    1
  • United States Geological Survey
    1
  • National University of Mongolia
    1
  • California State Polytechnic University
    1