Community Ecology
Volume/Issue:
Volume 7: Issue 1
Pre-dispersal seed predation by Bruchidius villosus (Coleoptera, Bruchidae) in Laburnum anagyroides (Fabaceae, Genisteae)
Author: Á. Szentesi 1
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  • 1 Department of Systematic Zoology and Ecology, Eötvös Loránd University Pázmány Péter sétány 1/C, H-1117, Budapest, Hungary
DOI:
https://doi.org/10.1556/comec.7.2006.1.2
Page Count:
13–22
Publication Date:
01 Jun 2006
Online Publication Date:
13 Apr 2006
Article Category:
Research Article
Restricted access

The pre-dispersal seed predator, Bruchidius villosus (Coleoptera, Bruchidae) destroyed ca. 8% of seeds of its major host-plant, Laburnum anagyroides (Fabaceae, Genisteae), a tree-like legume, in Hungary. However, almost 40% of the pods were infested by the beetle. Females did not show a resource concentration response: with increasing number of seeds per pod, the number of uninfested seeds also increased. A high seed abortion rate of 75% left an average of two full-grown seeds per pod. Females laid three-four times more eggs on pods than the number of full-grown seeds present in a pod. Despite this, a high level (ca. 15%) of egg parasitism and pod abortion that reached levels up to 50% on pods which already bore bruchid eggs, decreased the infestation level. Larval parasitisation rate of B. villosus by chalcids and braconids exceeded 30%.

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Cover Community Ecology
Community Ecology An Interdisciplinary Journal Reporting Progress in Community and Population Studies
Print ISSN:
1585-8553
Online ISSN:
1588-2756
Keywords:
Hungary; Bionomics; Body size; Bruchid; Golden rain; Oviposition; Seed size; Seed destruction

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