Oviposition deterring infochemicals in ladybirds: the role of phylogeny |
| |
Authors: | Alexandra Magro Christine Ducamp Felipe Ramon-Portugal Emilie Lecompte Brigitte Crouau-Roy Anthony Frederick George Dixon Jean-Louis Hemptinne |
| |
Affiliation: | 1.UMR CNRS 5174 “Evolution et diversité biologique”,Ecole Nationale de Formation Agronomique, Univ. de Toulouse,Castanet Tolosan Cedex,France;2.UMR CNRS 5174 “Evolution et diversité biologique”, Univ Toulouse 3, Bat IVR3 B2,Toulouse 9,France;3.School of Biological Sciences,University of East Anglia,Norwich,UK |
| |
Abstract: | Faced with an ephemeral prey, aphidophagous ladybirds rely on the hydrocarbons present in the tracks of their larvae to choose an unoccupied patch for egg laying. Although both conspecific and heterospecific larval tracks might deter females from oviposition, the response to the later is often less striking. Several explanations have been suggested to account for this. In this paper we tested the phylogeny hypothesis, which predicts that the chemical composition of the tracks of closely related species of ladybirds will be more similar to one another than to those of more distantly related species. Qualitative and quantitative information on the chemical nature of the larval tracks and a molecular phylogeny of seven species belonging to three different genera are provided, and the congruence between these two sets of results assessed. The results confirm the phylogeny hypothesis and infer a gradual mode of evolution of these infochemicals. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|