6 Works

Data from: Does the house sparrow Passer domesticus represent a global model species for egg rejection behavior?

Thomas Manna, Caren Cooper, Shane Baylis, Matthew D. Shawkey, Geoffrey I. N. Waterhouse, Tomas Grim & Mark E. Hauber
Conspecific brood parasitism (CP) is a facultative breeding tactic whereby females lay their eggs in the nests of conspecifics. In some species, potential host individuals have evolved the ability to identify and reject foreign eggs from their nest. Previous studies suggest that the ubiquitous House Sparrow Passer domesticus in Spain and South Africa employs both CP and parasitic egg rejection, while a population in China does not. Given the species’ invasive range expansions, the House...

Data from: The role of preservation on the quantification of morphology and patterns of disparity within Paleozoic echinoderms

Bradley Deline & James R. Thomka
The loss of information resulting from taphonomic degradation could represent a significant bias in the study of morphological diversity. This potential bias is even more concerning given the uneven effect of taphonomy across taxonomic groups, depositional facies, and stratigraphic successions and in response to secular changes through the Phanerozoic. The effect of taphonomic degradation is examined using character-based morphological data sets describing disparity in Paleozoic crinoids and blastozoans. Characters were sequentially excluded from the analyses...

Data from: Benefit of transferred mutations is better predicted by the fitness of recipients than by their ecological or genetic relatedness

Yinhua Wang, Carolina Diaz Arena, Daniel M. Stoebel, Kenneth M. Flynn, Ethan Knapp, Marcus M. Dillon, Andrea Wunsche, Philip J. Hatcher, Francisco B.-G. Moore, Vaughn S. Cooper & Tim F. Cooper
The effect of a mutation depends on its interaction with the genetic background in which it is assessed. Studies in experimental systems have demonstrated that such interactions are common among beneficial mutations and often follow a pattern consistent with declining evolvability of more fit genotypes. However, these studies generally examine the consequences of interactions between a small number of focal mutations. It is not clear, therefore, that findings can be extrapolated to natural populations, where...

Data from: Evolutionary shifts in the melanin-based color system of birds

Chad M. Eliason, Matthew D. Shawkey, Julia A. Clark & Julia A. Clarke
Melanin pigments contained in organelles (melanosomes) impart earthy colors to feathers. Such melanin-based colors are distributed across birds and thought to be the ancestral color-producing mechanism in birds. However, we have had limited data on melanin-based color and melanosome diversity in Palaeognathae, which includes the flighted tinamous and large-bodied, flightless ratites and is the sister taxon to all other extant birds. Here, we use scanning electron microscopy and spectrophotometry to assess melanosome morphology and quantify...

Data from: The plumage and colouration of an enantiornithine bird from the Early Cretaceous of China

Jennifer A. Peteya, Julia A. Clarke, Quanguo Li, Ke-Qin Gao & Matthew D. Shawkey
Brilliant colour displays and diverse feather morphologies that are often sexual ornaments are common throughout much of extant Avialae. Here we describe a new basal enantiornithine bird specimen recovered from the Early Cretaceous Jiufotang Formation of Liaoning Province in northeastern China. We present new information on the plumage of Bohaiornithidae as well as the first detailed colour reconstruction of an enantiornithine bird. The new specimen retains subadult skeletal characteristics, including periosteal pitting of the long...

Data from: Selection, constraint and the evolution of coloration in African starlings

Rafael Maia, Dustin R. Rubenstein & Matthew D. Shawkey
Colorful plumage plays a prominent role in evolution of birds, influencing communication (sexual/social selection) and crypsis (natural selection). Comparative studies have focused primarily upon these selective pressures, but the mechanisms underlying color production can also be important by constraining the color gamut upon which selection acts. Iridescence is particularly interesting to study the interaction between selection and color-producing mechanisms because a broad range of colors can be produced with a shared template, and innovations to...

Registration Year

  • 2016
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Resource Types

  • Dataset
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Affiliations

  • University of Akron
    6
  • Ghent University
    2
  • The University of Texas at Austin
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  • City University of New York
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  • Columbia University
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  • North Carolina Museum of Natural Sciences
    1
  • University of West Georgia
    1
  • University of New Hampshire
    1
  • Monash University
    1
  • Peking University
    1