3 Works

Data from: Alternative paths to success in a parasite community: within-host competition can favor higher virulence or direct interference

Farrah Bashey-Visser, Hadas Hawlena & Curtis M. Lively
Selection imposed by coinfection may vary with the mechanism of within-host competition between parasites. Exploitative competition is predicted to favor more virulent parasites, while interference competition may result in lower virulence. Here, we examine whether exploitative or interference competition determines the outcome of competition between two nematode species (Steinernema spp.), which in combination with their bacterial symbionts (Xenorhabdus spp.), infect and kill insect hosts. Multiple isolates of each nematode species, carrying their naturally associated bacteria,...

Data from: Use it or lose it: reproductive implications of ecological specialization in a haematophagous ectoparasite

Adi Arbiv, Irina S. Khokhlova, Ofer Ovadia, Ariel Novoplansky & Boris R. Krasnov
Using experimentally induced disruptive selection, we tested two hypotheses regarding the evolution of specialization in parasites. The ‘trade-off’ hypothesis suggests that adaptation to a specific host may come at the expense of a reduced performance when exploiting another host. The alternative ‘relaxed selection’ hypothesis suggests that the ability to exploit a given host would deteriorate when becoming obsolete. Three replicate populations of a flea Xenopsylla ramesis were maintained on each of two rodent hosts, Meriones...

Data from: Ectoparasite fitness in auxiliary hosts: Phylogenetic distance from a principal host matters

Irina S. Khokhlova, Laura J. Fielden, Allan A. Degen & Boris R. Krasnov
We studied reproductive performance in two flea species (Parapulex chephrenis and Xenopsylla ramesis) exploiting either a principal or one of eight auxiliary host species. We predicted that fleas would produce more eggs and adult offspring when exploiting (a) a principal host than an auxiliary host and (b) an auxiliary host phylogenetically close to a principal host than an auxiliary host phylogenetically distant from a principal host. In both flea species, egg production per female after...

Registration Year

  • 2012

Resource Types

  • Dataset


  • Ben-Gurion University of the Negev
  • Indiana University
  • Truman State University