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Author Spotlight: Influence of Temperature on Drosophila melanogaster and Desert-Adapted Beetles
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Variable effects of temperature on insect herbivory.

Nathan P Lemoine1, Deron E Burkepile1, John D Parker2

  • 1Department of Biological Sciences, Florida International University , Miami, FL , United States.

Peerj
|May 27, 2014
PubMed
Summary
This summary is machine-generated.

Rising temperatures boost insect herbivory up to 30°C, but effects vary greatly among species. Climate change impacts on plant biomass control will be complex due to diverse herbivore responses.

Keywords:
Climate changeColeopteraHierarchical modelHymenopteraLepidopteraThermal response curve

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Area of Science:

  • Ecology
  • Climate Change Biology
  • Insect Ecology

Background:

  • Rising temperatures can alter plant-herbivore interactions by affecting herbivore metabolism.
  • Understanding species-specific thermal responses is crucial for predicting ecosystem impacts.

Purpose of the Study:

  • To investigate the effect of temperature on herbivory rates across various insect-plant pairs.
  • To characterize the variability in thermal response curves among different herbivore species and host plants.

Main Methods:

  • Examined herbivory rates for 21 herbivore-plant pairs (14 herbivore, 12 plant species).
  • Assessed consumption rates across a range of temperatures, focusing on the 20-30°C interval and higher temperatures.

Main Results:

  • Overall herbivory rates increased with temperature from 20°C to 30°C.
  • Consumption rates did not increase further at temperatures above 30°C.
  • Significant variation in thermal responses was observed, with some pairs showing decreased herbivory at high temperatures, while others showed increased rates.

Conclusions:

  • Temperature has a complex, species-specific effect on herbivory rates.
  • Variability in thermal responses, even within species on different hosts, complicates predictions of climate change impacts.
  • Top-down control of plant biomass by herbivores may be unpredictably altered by rising global temperatures.