2023 Update: Aphid addition and exclusion

The aphid addition and exclusion experiment was started in 2011 by Katherine Muller. The original experiment included 100 plants selected from exPt01 which were each assigned to have aphids either added or excluded through multiple years. The intention is to assess the impact of the specialist herbivore Aphis echinaceae on Echinacea fitness.

Last summer (2022), team members Emma Reineke and Kennedy Porter were in charge of the experiment and did not find any aphids in exPt01, so they introduced a new population of Aphid echinaeceae into ExPt1. Learn more in the 2022 summer aphid update. During summer 2023, we did not do any fieldwork for this experiment and we didn’t see any aphids while measuring exPt01.

Aphids spotted by Abby VanKempen in 2016
  • Start year: 2011
  • Location: exPt01
  • Overlaps with: Phenology and fitness in P1
  • Data collected: 
    • none in 2023
  • Samples collected: NA
  • Products:
    • Andy Hoyt’s poster presented at the Fall 2018 Research Symposium at Carleton College
    • 2016 paper by Katherine Muller and Stuart on aphids and foliar herbivory damage on Echinacea
    • 2015 paper by Ruth Shaw and Stuart on fitness and demographic consequences of aphid loads

You can read more about the aphid addition and exclusion experiment, as well as links to prior flog entries mentioning the experiment, on the background page for this experiment.


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