Effect of temperature on cannibalism rate between green lacewings larvae (Chrysoperla carnea [Stephens], Neuroptera, Chrysopidae)

Authors

  • Helena ROJHT Univ. of Ljubljana, Biotechnical Fac., Dept. of Agronomy, Jamnikarjeva 101, SI-1111 Ljubljana, Slovenia
  • Franc BUDIJA Univ. of Ljubljana, Biotechnical Fac., Dept. of Wood Science and Technology, Rožna dolina, Cesta VIII/34, SI-1111 Ljubljana, Slovenia
  • Stanislav TRDAN Univ. of Ljubljana, Biotechnical Fac., Dept. of Agronomy, Jamnikarjeva 101, SI-1111 Ljubljana, Slovenia

DOI:

https://doi.org/10.14720/aas.2009.93.1.14888

Keywords:

larval cannibalism, green lacewings, Chrysoperla carnea, laboratory bioassay, biological control

Abstract

Paper presents a larval cannibalism of green lacewings (Chrysoperla carnea), which was observed during the laboratory bioassay on non-target effect of entomopathogenic nematodes against green lacewings larvae. The most probable reason for larval cannibalism were undersized Petri dishes in which the bioassay was performed. Due to large number of larvae per surface unit, frequent crossing of green lacewings larvae appeared and this consequently lead to cannibalism. In most cases larger, elder larvae consumed smaller, younger larvae. Cannibalism increased with temperature rise and was the most intensive at 25 °C. At this temperature the larval mortality was 22.0 % after two days, while after four days the larval mortality reached 31.0 %.

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Published

15. 05. 2009

Issue

Section

Original Scientific Article

How to Cite

ROJHT, H., BUDIJA, F., & TRDAN, S. (2009). Effect of temperature on cannibalism rate between green lacewings larvae (Chrysoperla carnea [Stephens], Neuroptera, Chrysopidae). Acta Agriculturae Slovenica, 93(1), 5–9. https://doi.org/10.14720/aas.2009.93.1.14888

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