Host-plant susceptibility to the carrot fly, Psila rosae. 3. The role of oviposition preferences and larval performance.

摘要

The acceptability of various plant species to ovipositing carrot flies was weakly, but significantly correlated with the host's suitability for larval development. Both adult host-plant preferences and larval performance as determined in laboratoryexperiments explained a part of the variation in susceptibility among the various test plants (mainly Apiaceae) observed in the field in the UK. Across the whole set of plant species examined, antixenosis contributed more substantially to resistance thanantibiosis, while the reverse seemed to be true for carrot cultivars.