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Journal Article

Selective Avoidance by Vertebrate Frugivores of Green Holly Berries Infested with a Cecidomyiid Fly (Diptera: Cecidomyiidae)

Vera Krischik, Eric S. McCloud and John A. Davidson
The American Midland Naturalist
Vol. 121, No. 2 (Apr., 1989), pp. 350-354
DOI: 10.2307/2426039
Stable URL: http://www.jstor.org/stable/2426039
Page Count: 5

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Topics: Fruits, Berries, Midges, Fungi, Insect larvae, Vertebrates, Birds, Ripening, Winter, Branches
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Selective Avoidance by Vertebrate Frugivores of Green Holly Berries Infested with a Cecidomyiid Fly (Diptera: Cecidomyiidae)
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Abstract

Green fruits of Ilex opaca infested with larvae of the holly berry midge Asphondylia ilicicola Foote (Diptera: Cecidomyiidae) were eaten less during the winter and spring than uninfested red fruits. These results indicate that fly larvae, and their associated fungus, interact with berry physiology to prevent the fruit from changing color, thereby protecting the larvae from frugivory until spring when the midge emerges and starts the cycle again by laying eggs in holly flowers.

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