Researches on Population Ecology

, Volume 31, Issue 1, pp 153–160

Sibling and non-sibling cannibalism by larvae of a lady beetleHarmonia axyridisPallas (Coleoptera: Coccinellidae) in the field

  • Naoya Osawa

DOI: 10.1007/BF02515813

Cite this article as:
Osawa, N. Res Popul Ecol (1989) 31: 153. doi:10.1007/BF02515813


Sibling (cannibalism among siblings) and non-sibling cannibalism (cannibalism among non-siblings) were studied in a natural population of a lady beetle,Harmonia axyridisPallas.

Of all the eggs laid (n=2269), 24.76% (n=562) were killed by sibling cannibalism and 36.10% (n=819) were killed by non-sibling cannibalism. Sibling cannibalism occurred constantly and intensively in most egg batches throughout the entire oviposition period. On the other hand, non-sibling cannibalism was more intense in the middle and late oviposition periods, and when the egg batches were close to an aphid colony. This may be due to the high density ofH. axyridis larvae relative to aphid density in the middle and late oviposition periods and also the larvae searching intensively near an aphid colony.

Copyright information

© Society of Population Ecology 1989

Authors and Affiliations

  • Naoya Osawa
    • 1
  1. 1.Entomological Laboratory, Faculty of AgricultureKyoto UniversityKyotoJapan