2 Works

Data from: Genetic structure and shell shape variation within a rocky shore whelk suggests both diverging and constraining selection with gene flow

Michael R. Gemmell, Steven A. Trewick, James S. Crampton, Felix Vaux, Simon F.K. Hills, Elizabeth E. Daly, Bruce A. Marshall, Alan G. Beu, Mary Morgan-Richards & Simon F K Hills
Variation in snail shell shape has provided evolutionary biologists with excellent material for the study of local adaptation to local environments. However, assuming shell shape variation is evidence of distinct lineages (species) may have led to taxonomic inflation within some gastropod lineages. Here we compare shell shape variation and genetic structure of two independent lineages of New Zealand rocky shore whelks in order to understand the process that lead to an unusual disjunct distribution. We...

Data from: Diversity-dependent evolutionary rates in early Paleozoic zooplankton

Michael Foote, Roger A. Cooper, James S. Crampton & Peter M. Sadler
The extent to which biological diversity affects rates of diversification is central to understanding macroevolutionary dynamics, yet no consensus has emerged on the importance of diversity-dependence of evolutionary rates. Here we analyse the species-level fossil record of early Paleozoic graptoloids, documented with high temporal resolution, to test directly whether rates of diversification were influenced by levels of standing diversity within this major clade of marine zooplankton. To circumvent the statistical regression-to-the-mean artefact, whereby higher- and...

Registration Year

  • 2018
    2

Resource Types

  • Dataset
    2

Affiliations

  • GNS Science
    2
  • University of Chicago
    1
  • University of California, Riverside
    1
  • Victoria University
    1
  • Massey University
    1
  • Museum of New Zealand Te Papa Tongarewa
    1