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| Content Provider | Springer Nature Link |
|---|---|
| Author | Halverson, Kristy Heard, Stephen B. Nason, John D. Stireman, John O. |
| Copyright Year | 2007 |
| Abstract | Genetic variation among plants can influence host choice and larval performance in insect herbivores. Ploidy (cytotype) variation is a particularly dramatic form of plant genetic variation, and where diploid and polyploid cytotypes of a species occur in sympatry, they may provide herbivores with choices that are distinguished by profound and genome-wide genetic differences. We tested for non-random attack by five gallmaking insect herbivores on diploid, tetraploid, and hexaploid cytotypes of the goldenrod Solidago altissima L., working in seven midwestern US populations where the ploidies co-occur on spatial scales relevant to insect host choice. For four of the five herbivores, attack was non-random with respect to ploidy at one or more sites. Ploidy effects on attack were complex: the ploidy subjected to highest attack varied both across herbivores within sites and (for most herbivores) across sites within herbivores. Ploidy effects on attack will alter rates of encounter between insect herbivores—either increasing or decreasing the likelihood of two herbivores sharing a host plant ramet, compared with the case with no effects of ploidy. Plant ploidy variation appears likely to have a major impact on insect community organization, and perhaps on plant–herbivore coevolution, but that impact is likely to be spatially heterogeneous. |
| Starting Page | 755 |
| Ending Page | 761 |
| Page Count | 7 |
| File Format | |
| ISSN | 00298549 |
| Journal | Oecologia |
| Volume Number | 154 |
| Issue Number | 4 |
| e-ISSN | 14321939 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2007-10-09 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Polyploidy Insect–plant interactions Herbivory Goldenrod Plant Sciences Ecology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology, Evolution, Behavior and Systematics |
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