Pine pollen effects on Frankliniella occidentalis and F. fusca reproduction

The reproduction of Frankliniella occidentalis and F. fusca was characterized on onion plants under one of two treatments: lightly dusted with pine pollen or untreated. Age-synchronized, newly eclosed female adults were placed on a single onion in a cage. Every 2 d for a total of 20 d, females were moved to new cages on an onion with the same treatment. Four out of ten previously occupied onions were stained to find number of eggs oviposited. The remaining six onions occupied by F. fusca or F. occidentalis were examined for number of adult thrips present after 18 d or 15 d, respectively.