Published April 6, 2017 | Version v1
Dataset Open

Data from: Does increased heat resistance result in higher susceptibility to predation? A test using (Drosophila melanogaster) selection and hardening

  • 1. Monash University
  • 2. McMaster University
  • 3. George Washington University
  • 4. University of Melbourne

Description

Heat resistance of ectotherms can be increased both by plasticity and evolution, but these effects may have trade-offs resulting from biotic interactions. Here we test for predation costs in Drosophila melanogaster populations with altered heat resistance produced by adult hardening and directional selection for increased heat resistance. In addition, we also tested for genetic trade-offs by testing heat resistance in lines that have evolved under increased predation risk. We show that while 35/37°C hardening increases heat resistance as expected, it does not increase predation risk from jumping spiders or mantids; in fact there was an indication that survival may have increased under predation following a triple 37°C compared to a single 35°C hardening treatment. Flies that survived a 39°C selection cycle showed lower survival under predation, suggesting a predation cost of exposure to a more severe heat stress. There was however no correlated response to selection because survival did not differ between control and selected lines after selection was relaxed for one or two generations. In addition, lines selected for increased predation risk did not differ in heat resistance. Our findings suggest independent evolutionary responses to predation and heat as measured in laboratory assays, and no costs of heat hardening on susceptibility to predation.

Notes

Files

Files (193.8 kB)

Name Size Download all
md5:5eae8ac62ac0f140d3852c1dd8eeea81
13.2 kB Download
md5:60d73f65368d2a53c67639bb386ab25f
19.5 kB Download
md5:068167ba098a420e93b75c4520cfcc64
25.9 kB Download
md5:ebad2ae68654aa57e611ea2097ffda0e
73.8 kB Download
md5:4747330bb16d4b7e795c5eb6863f9c3b
61.4 kB Download

Additional details

Related works

Is cited by
10.1111/jeb.13084 (DOI)