Study

Captive coyotes Canis latrans can be conditioned to avoid pulegone, but not eggs, when presented with pulegone-treated eggs. Pulegone is found to render eggs inviable

  • Published source details Hoover S.E. & Conover M.R. (2000) Using eggs containing an irritating odor to teach mammalian predators to stop depredating eggs. Wildlife Society Bulletin, 28, 84-89

Actions

This study is summarised as evidence for the following.

Action Category

Use aversive conditioning to reduce nest predation by mammalian predators

Action Link
Bird Conservation
  1. Use aversive conditioning to reduce nest predation by mammalian predators

    A replicated, controlled experiment with 12 captive coyotes Canis latrans (Hoover & Conover 2000) found that they preferentially consumed eight untreated eggs from untreated nests, compared to four untreated eggs from nests sprayed with pulegone (mint extract) or four eggs sprayed with pulegone, over a three day period. A second trial with 29 coyotes found that, during a five-day conditioning period when coyotes were presented with eggs injected with 1 ml pulegone, they opened and consumed fewer eggs each day (from 100% to <40% opened, <8% consumed). However, after the conditioning period, coyotes continued to eat 100% of untreated eggs when presented with them, either singly or alongside pulegone injected and sprayed eggs.

     

Output references

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, terrestrial mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read latest volume: Volume 17

Go to the CE Journal

Subscribe to our newsletter

Please add your details if you are interested in receiving updates from the Conservation Evidence team about new papers, synopses and opportunities.

Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust