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Plant size, latitude, and phylogeny explain within-population variability in herbivory.

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Related Experiment Video

Updated: Feb 6, 2026

Author Spotlight: Optimizing the Rearing Procedure of Germ-Free Wasps
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Optimal Temperature for Rearing the Edible Ruspolia differens (Orthoptera: Tettigoniidae).

V J Lehtovaara1, H Roininen1, A Valtonen1

  • 1Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland.

Journal of Economic Entomology
|August 21, 2018
PubMed
Summary
This summary is machine-generated.

Optimal rearing temperatures for the African insect Ruspolia differens were determined. The study found that 29°C is the ideal temperature for mass-rearing, maximizing survival and growth for this economically important species.

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Area of Science:

  • Entomology
  • Insect Rearing
  • Applied Entomology

Background:

  • Ruspolia differens (Orthoptera: Tettigoniidae) presents significant economic potential in Africa.
  • Large-scale rearing requires determination of optimal environmental conditions, specifically temperature.

Purpose of the Study:

  • To determine the optimal constant rearing temperature for mass-rearing Ruspolia differens.
  • To assess the impact of temperature on survival, development rate, and weight gain.

Main Methods:

  • Ruspolia differens nymphs were reared at seven constant temperatures (18–32°C).
  • Performance traits including survival, development time, and adult weight were measured.
  • Data were analyzed to identify optimal temperature ranges for different parameters.

Main Results:

  • Maximum survival (86.7%) and development rate were observed at 30°C.
  • Maximum adult weight (0.62 g) was achieved at 28°C.
  • Harvesting 10 days post-adult molt can increase weight by up to 50%.

Conclusions:

  • An overall optimal rearing temperature of 29°C is recommended for Ruspolia differens mass-rearing.
  • Temperatures between 28–30°C maximize survival and weight gain.
  • A temperature of 31°C offers the shortest development time.