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Inversely density-dependent egg parasitism in patchy distributions of the citrus pest Cryptophlebia leucotreta (Lepidoptera: Tortricidae) and its agricultural efficiency.

Published online: 22 Jun 1988

Authors: Newton, P. J.

Content type: Journal article

Journal title: Journal of Applied Ecology

Field surveys of egg populations of Cryptophlebia leucotreta and the egg parasitoid Trichogrammatoidea cryptophlebiae native to southern Africa, were ...

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Bioindication using trap-nesting bees and wasps and their natural enemies: community structure and interactions.

Published online: 17 Mar 1999

Authors: Tscharntke, T. & Gathmann, A. & Steffan-Dewenter, I.

Content type: Journal article

Journal title: Journal of Applied Ecology

Results from four field studies conducted in Germany showed that communities of trap-nesting bees and wasps (Vespidae) and their natural enemies are p...

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