Infection success data from experimental pairings of cane toad hosts and lungworm parasites
Data files
Feb 02, 2024 version files 22.90 KB
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README.md
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Toad_vs_Rhabdias_infection_success_data.xlsx
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Abstract
By imposing novel selection pressures on both participants, biological invasions can disrupt evolutionary “arms races” between hosts and parasites. A spatially replicated cross-infection experiment reveals strong divergence in the ability of lungworms (Rhabdias pseudosphaerocephala) to infect invasive cane toads (Rhinella marina) in Australia. In areas colonised for > 20 years, toads are more resistant to infection by local strains of parasites than by allopatric strains. The situation reverses at the invasion front, where super-infective parasites have evolved. Invasion-induced shifts in genetic diversity and selective pressures may explain why hosts win the arms race in long-colonised areas whereas parasites win the arms race at the invasion front.
https://doi.org/10.5061/dryad.v41ns1s2z
This was an experimental cross-infection study where common-garden reared cane toads from across their invaded range in Australia were infected with Rhabdias lungworm parasites from across the range. The dataset contains information on the origins of host and parasite, their sizes and the infection success of the experimental pairings.
Description of the data and file structure
The data set is an excel file with columns for these variables-
Variable name Variable description
ID Individual identification code for each toad
Litter The captive-bred family each toad originated from
toad site The location that the parental toads that produced each litter were originally captured from
Toad state The Australian state that each parental capture site was located in
worm site The location that the toads that donated infective Rhabdias larvae were originally captured from.
worm state The Australian state that each Rhabdias-donating toad capture site was located in
Total Rhabdias The number of adult Rhabdias present in each toads lungs upon euthanasia and dissection
Snout-vent length Total body length (in mm) of each toad at the time of experimental infection
L3 PC1 Principal component describing body size (combination of length and width) of Rhabdias larvae used in each batch of experimental infections.
- Brown, Gregory P.; Shine, Richard; Rollins, Lee A. (2024). A biological invasion modifies the dynamics of a host–parasite arms race. Proceedings of the Royal Society B: Biological Sciences. https://doi.org/10.1098/rspb.2023.2403
