2 Works

Data from: Shifts to earlier selfing in sympatry may reduce costs of pollinator sharing

April M. Randle, Rachel B. Spigler & Susan Kalisz
Coexisting plant congeners often experience strong competition for resources. Competition for pollinators can result in direct fitness costs via reduced seed set or indirect costs via heterospecific pollen transfer (HPT), causing subsequent gamete loss and unfit hybrid offspring production. Autonomous selfing may alleviate these costs, but to preempt HPT, selfing should occur early, before opportunities for HPT occur (i.e. “preemptive selfing hypothesis”). We evaluated conditions for this hypothesis in Collinsia sister species, C. linearis and...

Data from: Tuberculosis-like respiratory infection in 245-million-year-old marine reptile suggested by bone pathologies

Dawid Surmik, Tomasz Szczygielski, Katarzyna Janiszewska & Bruce M. Rothschild
An absence of archaeological and palaeontological evidence of pneumonia in the remote past contrasts with its recognition in the more recent archaeologic record. We document an apparent infection-mediated periosteal reaction affecting the dorsal ribs in a Middle Triassic eosauropterygian historically referred to as ‘Proneusticosaurus’ silesiacus. High-resolution X-ray microtomography (XMT) and histological studies of the pathologically-altered ribs revealed the presence of a continuous solid periosteal reaction with multiple superficial blebs (protrusions) on the visceral surfaces of...

Registration Year

  • 2018
    2

Resource Types

  • Dataset
    2

Affiliations

  • Carnegie Museum of Natural History
    2
  • Temple University
    1
  • University of Silesia
    1
  • Polish Academy of Sciences
    1
  • University of Tennessee at Knoxville
    1
  • University of San Francisco
    1