Sl. Clement et al., SETTLING AND FEEDING RESPONSES OF PEA WEEVIL (COLEOPTERA, BRUCHIDAE) TO FLOWERS OF SELECTED PEA LINES, Journal of economic entomology, 89(3), 1996, pp. 775-779
This study characterized the settling and feeding responses of female
pea weevils, Bruchus pisorum (L.), to flowers of pea lines varying in
their susceptibility to pea weevil oviposition and, in so doing, sough
t to examine the potential of using weevil responses to flowers to scr
een pea germplasm for antixenosis resistance. In dual-choice laborator
y tests, weevils were less frequently observed settling and feeding on
flowers of plant introduction lines (PI 196027, PI 263026) with pod a
ntixenosis to ovipositing weevils than on flowers of 2 cultivars ('Ala
ska', 'Garfield') susceptible to oviposition. Weevils did not discrimi
nate when exposed to 2 flowers from susceptible lines or 2 flowers fro
m resistant lines. These results suggest it may be possible to use a f
lower assay to screen pea germplasm for antixenosis resistance to pea
weevil. This study also demonstrates the application of Markov chain m
odels for the analysis of data in which repeated categorical responses
of test insects are observed.