experimentally induced host shift in a seed beetle

Many insects use a fairly well-defined set of host plants, but are occasionally observed on an atypical host. The seed beetle Callosobruchus maculatus (F.) (Coleoptera: Chrysomelidae: Bruchinae) has rarely been reported to attack lentil, which is distantly related to its usual legume hosts. An initi...

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Bibliographic Details
Published in:Entomologia experimentalis et applicata 2009-07, Vol.132 (1), p.39-49
Main Authors: Messina, Frank J, Mendenhall, Michelle, Jones, Jake C
Format: Article
Language:English
Subjects:
adaptation
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Autoecology
Biological and medical sciences
Bruchinae
Callosobruchus maculatus
Chrysomelidae
Coleoptera
Fabaceae
Fundamental and applied biological sciences. Psychology
genetic variation
Lens culinaris
Protozoa. Invertebrata
selection experiment
trade-offs
Vigna
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Summary:Many insects use a fairly well-defined set of host plants, but are occasionally observed on an atypical host. The seed beetle Callosobruchus maculatus (F.) (Coleoptera: Chrysomelidae: Bruchinae) has rarely been reported to attack lentil, which is distantly related to its usual legume hosts. An initial assay of an Asian beetle population revealed that none of the 100 larvae entering lentil seeds survived to adult emergence. Nevertheless, three attempts at mass selection, in which more than 2 000 adults were added to lentil seeds, eventually yielded self-sustaining populations. In each case, a severe bottleneck was followed by a rapid increase in survival, which exceeded 65% after only five generations and surpassed 85% in
ISSN:0013-8703
1570-7458
DOI:10.1111/j.1570-7458.2009.00864.x