Populations of plants are subject to attack by pathogens and herbivores at all stages of their
life cycles. Pest pressure may be devastating, as illustrated by the outbreaks of insects apd …

The coevolutionary association between plants of the family Cucurbitaceae and beetles of
the tribe Luperini (Coleoptera: Chrysomelidae; Galerucinae) is mediated to a large extent by …

Experimentally damaged leaves of Cucurbita moschata mobilize substances to the
damaged region within 40 minutes. These substances stimulate feeding by Acalymma vittata …

Four species of diabroticites with different host specificities are shown for the first time to
sequester cucurbitacins. While all beetles fed on an artificial diet (no cucurbitacins) were …

This study tests the hypothesis that feeding behavior in the herbivorous coccinellid
Epilachna borealis is an effective adaptation for avoiding facultative chemical defenses in its …

The cucurbitacins are oxygenated tetracyclic triterpenoids produced as secondary plant
compounds by nearly all genera of Cucurbitaceae. The very bitter and toxic cucurbitacins …

The western corn rootworm (WCR), Diabrotica virgifera LeConte, demonstrated strong
affinities for aggregation and feeding on the foliage of certain wild Cucurbita species with …

Though few data document the causes of qualitative and quantitative variation in
cucurbitacins among Cucurbita species, the spatial and temporal patterns of cucurbitacin …

Nineteen species and 46 cultivars of Cucurbita, Cucumis, and Citrullus were analyzed for
seedling cucurbitacin (Cuc) content by Diabrotica feeding on thin-layer chromatography …

Field naturalists frequently ob-serve that the intensity of insect herbi-vory in a natural
defoliation event is not spread uniformly over individual conspecific plants and may even …