3 Works

Phylogeography of the widespread Caribbean spiny orb weaver Gasteracantha cancriformis

Lisa Chamberland, Fabian C. Salgado-Roa, Alma Basco, Amanda Crastz-Flores, Greta Binford & Ingi Agnarsson
Background. Modern molecular analyses are often inconsistent with pre-cladistic taxonomic hypotheses, frequently indicating higher richness than morphological taxonomy estimates. Among Caribbean spiders, widespread species are relatively few compared to the prevalence of single island endemics. The taxonomic hypothesis Gasteracantha cancriformis circumscribes a species with profuse variation in size, color, and body form. Distributed throughout the Neotropics, G. cancriformis is the only morphological species of Gasteracantha in the New World in this globally distributed genus. Methods....

From Gondwana to GAARlandia: Evolutionary history and biogeography of ogre‐faced spiders (Deinopis)

Lisa Chamberland, Anne McHugh, Sarah Kechejian, Greta Binford, Jason Bond, Jonathan Coddington, Gaynor Dolman, Chris Hamilton, Mark Harvey, Matjaz Kuntner & Ingi Agnarsson
Aim We explore the evolutionary history of the ogre‐faced spiders (Deinopis) from their Early Cretaceous origins to present day. Specifically, we investigate how vicariance and dispersal have shaped distribution patterns of this lineage. Within the Caribbean, we test the role of GAARlandia, a hypothesized land bridge that connected South America to the Greater Antilles during the Eocene–Oligocene transition (~35–33 Ma), in the biogeography of Deinopis. Taxon Araneae: Deinopidae: Deinopis. Location Caribbean islands, with additional global...

Wildfire alters the disturbance impacts of an emerging infectious disease via changes to host occurrence and demographic structure

Allison Simler-Williamson, Margaret Metz, Kerri Frangioso & David Rizzo
1. Anthropogenic activities have altered historical disturbance regimes, and understanding the mechanisms by which these shifting perturbations interact is essential to predicting where they may erode ecosystem resilience. Emerging infectious plant diseases, caused by human translocation of nonnative pathogens, can generate ecologically-damaging forms of novel biotic disturbance. Further, abiotic disturbances, such as wildfire, may influence the severity and extent of disease-related perturbations via their effects on the occurrence of hosts, pathogens, and microclimates; however, these...

Registration Year

  • 2020
    3

Resource Types

  • Dataset
    3

Affiliations

  • Lewis & Clark College
    3
  • University of Vermont
    2
  • University of California, Davis
    2
  • Del Rosario University
    1
  • Western Australian Museum
    1
  • Smithsonian Institution
    1
  • University of Puerto Rico at Río Piedras
    1
  • Ana G. Mendez University System
    1