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Insect development under predation risk variable temperature, and variable food quality.

J David Logan1, William Wolesensky, Anthony Joern

  • 1Department of Mathematics, University of Nebraska, Lincoln, NE 68588-0130 USA. dlogan@math.unl.edu

Mathematical Biosciences and Engineering : MBE
|July 31, 2007
PubMed
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This study models grasshopper development, showing how environmental changes like temperature and food quality impact survival and growth. It highlights temperature

Area of Science:

  • Ecology and Evolutionary Biology
  • Environmental Science
  • Insect Physiology

Background:

  • Insect development is influenced by environmental factors and resource availability.
  • Understanding individual trade-offs is crucial for scaling up to population dynamics.
  • Climate change impacts ecosystems through altered environmental conditions.

Purpose of the Study:

  • To model grasshopper nymphal development considering prey vigilance and nutrient intake trade-offs.
  • To investigate the effects of variable temperature and food quality on insect development and survival.
  • To scale individual-level models to population dynamics, incorporating mortality and predation risk.

Main Methods:

  • Developed an individual-based model for grasshopper nymphal development.

Related Experiment Videos

  • Incorporated a trade-off between prey vigilance and nutrient intake.
  • Scaled the model to the population level, including temperature-dependent predation risk and natural mortality.

    • Main Results:

    • Survivorship and development time are sensitive to predation risk and nutrient intake.
    • Variations in food quality and temperature significantly affect grasshopper development.
    • Temperature plays a critical role in mediating trophic interactions and developmental rates.

    Conclusions:

    • The model quantifies the impact of environmental variability on insect populations.
    • Temperature is a key factor influencing insect development and survival under changing climate conditions.
    • This research provides insights into assessing climate change effects on ecological interactions.