4 Works

Data from: Seasonal patterns of hormones, macroparasites, and microparasites in wild African ungulates: the interplay between stress, reproduction, and disease

Carrie A. Cizauskas, Wendy C. Turner, Neville I. Pitts, Wayne M. Getz & Neville Pitts
Sex hormones, reproductive status, and pathogen load all affect stress. Together with stress, these factors can modulate the immune system and affect disease incidence. Thus, it is important to concurrently measure these factors, along with their seasonal fluctuations, to better understand their complex interactions. Using steroid hormone metabolites from fecal samples, we examined seasonal correlations among zebra and springbok stress, reproduction, gastrointestinal (GI) parasite infections, and anthrax infection signatures in zebra and springbok in Etosha...

Data from: Alternative reproductive tactics in female striped mice: heavier females are more likely to breed solitary than communally

Davina L. Hill, Neville Pillay & Carsten Schradin
1. Alternative reproductive tactics (ARTs) are discrete reproductive phenotypes governed by decision rules called strategies. ARTs are fixed for life in species with alternative strategies, while tactic expression is plastic in species with a single strategy. ARTs have been investigated in males of many species, but few studies have tested whether the same theoretical framework applies in females. 2. Female striped mice (Rhabdomys pumilio) employ three ARTs: communal breeders give birth in a nest shared...

Data from: An ambusher’s arsenal: chemical crypsis in the puff adder (Bitis arietans)

Ashadee Kay Miller, Bryan Maritz, Shannon McKay, Xavier Glaudas & Graham J. Alexander
Ambush foragers use a hunting strategy that places them at risk of predation by both visual and olfaction-oriented predators. Resulting selective pressures have driven the evolution of impressive visual crypsis in many ambushing species, and may have led to the development of chemical crypsis. However, unlike visual crypsis, few studies have attempted to demonstrate chemical crypsis. Field observations of puff adders (Bitis arietans) going undetected by several scent-orientated predator and prey species lead us to...

Data from: Revision of the first therocephalian, Theriognathus Owen (Therapsida: Whaitsiidae), and implications for cranial ontogeny and allometry in nonmammaliaform eutheriodonts

Adam Huttenlocker & Fernando Abdala
Historically, the whaitsiid therocephalian Theriognathus Owen was one of the earliest described nonmammalian therapsids, its morphology helping to link phylogenetically the Paleozoic synapsids of North America and southern Africa to their mammalian successors. However, decades of taxonomic over-splitting and superficial descriptions obscured the morphologic diversity of the genus, hindering its utility as a study system for the evolution of synapsid cranial function as well as its biostratigraphic significance in the Late Permian of southern Africa....

Registration Year

  • 2015
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Resource Types

  • Dataset
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Affiliations

  • University of the Witwatersrand
    4
  • University of the Western Cape
    1
  • Princeton University
    1
  • University of California, Berkeley
    1
  • University of Oslo
    1
  • French National Centre for Scientific Research
    1
  • University of Utah
    1
  • University of KwaZulu-Natal
    1