Oak Apple Gall

Oak Apple Gall

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Credit: MARTIN SHIELDS/SCIENCE PHOTO LIBRARY

Caption: These galls are abnormal, deformed leaves. The abnormal growth is caused by the larva of a parasitic wasp, Amphibolips confluenta, that, after an egg has been laid in a leaf vein, secretes a chemical that causes the leaf to grow as a round papery home for the larva. The larva feeds on the inside of the gall and emerges, upon maturing, into an adult wasp.

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Keywords: abnormal, abnormality, amphibolips, amphibolips confluenta, apple gall, botany, deformed, development, ecological, ecology, forest health, gall, gall wasp, growth, interaction, leaf, oak, oak apple gall, oak parasite, parasite, parasitic, pest, plant, quercus, silviculture, spongy oak apple, tree, tree health

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