Meny

Javascript is not activated in your browser. This website needs javascript activated to work properly.
Du är här

Food preference, diet dependent fecundity and larval development in Harpalus rufipes (Coleoptera: Carabidae)

Författare:
Publiceringsår: 1997
Språk: Engelska
Sidor: 307-315
Publikation/Tidskrift/Serie: Pedobiologia
Volym: 41
Dokumenttyp: Artikel
Förlag: Jena, Gustav Fischer

Sammanfattning

The carabid beetle Harpalus rufipes has been examined with respect to food preference and food quality. Three different experiments were performed to clarify the role of weedy seeds and insects as food for H. rufipes: 1) adult's food preference, 2) fecundity dependent on diet, and 3) larval development dependent on diet.
No direct relation between food preference and food value was found. The seeds of Taraxacum spl were the most preferred among all the food types tested.
Among the insects the cereal aphid Metopolophium dirhodum and Drosophila were highly preferred. The value of insects as a food source was much lower than the value of seeds, for the larvae as well as for the adults. Survival was identical, however, on a mixed insect diet and a mixed seed diet, but the developmental time for first and second larval instar was about twice as long on the mixed insect diet. The single species diets also differed in value. Seeds of Poa annua were of high value whereas the aphid Rhopalosiphum padi was of extremely low value.

Disputation

Nyckelord

  • Biology and Life Sciences
  • larval survival
  • food preference
  • fecundity
  • diet value
  • insect diet
  • Seed diet

Övriga

Published
Yes
  • Soil Ecology
  • ISSN: 0031-4056

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen