Abstract
Tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), oviposition and longevity were examined when adult females were switched between cotton, Gossypium hirsutum (L.), and fleabane, Erigeron strigosus Muhlenberg ex Willdenow. Ovipositional rates and patterns were significantly affected by the sequence in which cotton and fleabane were offered. There was a rapid decrease in egg deposition when bugs were switched from fleabane to cotton. In contrast, a slow increase in oviposition occurred when bugs were switched from cotton to fleabane. Bugs laid more eggs on fleabane than on cotton when given a choice of host. There was no relationship between longevity and host sequence within years. Ovipositional preferences and host quality appeared to be responsible for differences in egg deposition.
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