AN EXAMINATION OF TARNISHED PLANT BUG FEEDING INJURY ON STRAWBERRY

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  • 1 University of Maine, P.O. Box 179, Nonmouth, MB 04259
  • 2 Plant Biology Dept, Nesmith Hall, University of New Hampshire, Durham, NH 03824

The tarnished plant bug (Lvgus lineolaris) is a serious pest of strawberries in North America, causing a severe malformation of the receptacle known as “apical seediness” or “buttoning”. Light and scanning electron microscopy were used to assess tarnished plant bug feeding on strawberries and to determine the nature of the injury. During early fruit development stages (anthesis to petal fall) the primary feeding sites were developing achenes. Feeding sites on more developed fruit changed to receptacle tissue, usually close to an achene. The “buttoning” malformation of strawberries associated with tarnished plant bug is most likely a result of the destruction of achenes during early fruit development stages. Feeding on receptacle tissue later in fruit development causes more localized damage, such as creases and indentations.

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