Pleiotropic effects associated with an allele enabling the flea beetle Phyllotreta nemorum to use Barbarea vulgaris as a host plant
| Autor: | Paul M. Brakefield, Klaas Vrieling, Casper J. Breuker, Kathleen Victoir, Peter W. de Jong |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
Zoology
pararge-aegeria Phyllotreta nemorum Fluctuating asymmetry stress Pleiotropy culex-pipiens Botany evolution Allele Laboratory of Entomology gene Ecology Evolution Behavior and Systematics Barbarea vulgaris Flea beetle biology conferring resistance fluctuating asymmetry biology.organism_classification Fecundity PE&RC Laboratorium voor Entomologie developmental instability defenses Animal ecology lucilia-cuprina |
| Zdroj: | Evolutionary Ecology, 21(1), 13-26 Evolutionary Ecology 21 (2007) 1 |
| ISSN: | 0269-7653 |
| Popis: | In the Danish region of Kvaerkeby, a mutation in an, as yet, unknown single autosomal gene has resulted in a dominant resistance (R-) allele in the flea beetle Phyllotreta nemorum L. (Coleoptera: Chrysomelidae: Alticinae). It enables the beetle to overcome the defences of Barbarea vulgaris ssp. arcuata (Opiz.) Simkovics G-type (Brassicaceae) and use it as a host plant. In this study, we investigated the pleiotropic effects associated with the presence of this particular R-allele in female P. nemorum. These females had the R-allele backcrossed into the genetic background of non-resistant beetles. The effects were investigated under both favourable and stressful conditions (cold shock). The presence of the R-allele in a non-resistant genetic background caused a very high mortality in resistant individuals during the early stages of development under both conditions, but it did not affect the adult life-history traits longevity, body size and fecundity, under both conditions. Regardless of temperature treatment, resistant females in general were found to lay significantly more eggs. Developmental stability, as measured by tibia length fluctuating asymmetry, was not correlated with overall developmental stress in this study. |
| Databáze: | OpenAIRE |
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