Cereal Leaf Beetle: 1 Feeding and Oviposition on Winter Wheat and Spring Oats 2

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Abstract
The relationship of cereal leaf beetle, Oulema melanopus (L.), feeding and oviposition on wheat and oats was evaluated by using daily efficiency values, calculated by dividing the number of eggs deposited by the amount of food consumed per female. Field beetles had a greater efficiency on oats than wheat. Previous laboratory studies on ‘Lakeland’ barley seedlings found that beetles were most efficient shortly after the initiation of oviposition; but beetle feeding on oats began almost one month later than on wheat. When beetles were transferred from wheat to oats and back to wheat, a substantial increase in efficiency occurred while the beetles were on oats.

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