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- JANSSEN, A., et al. Show all 5 Authors
- Journal of evolutionary biology 2007 v.20 no.5 pp. 2016-2027
- Araneae; Tetranychidae; cucumbers; evolution; fecundity; genetic variation; host plants; mites; tomatoes
- ... Evolution in a single environment is expected to erode genetic variability, thereby precluding adaptation to novel environments. To test this, a large population of spider mites kept on cucumber for approximately 300 generations was used to establish populations on novel host plants (tomato or pepper), and changes in traits associated to adaptation were measured after 15 generations. Using a half‐ ...
- Janssen, A., et al. Show all 4 Authors
- Entomologia experimentalis et applicata 1999 v.92 no.1 pp. 73-82
- volatile compounds; food chain; Neoseiulus californicus; Cucumis sativus; Phytoseiulus persimilis; biological control agents; host plants; predatory mites; Orius laevigatus; interspecific competition; Tetranychus urticae; olfactometers; odors
- ... Anthropods use odours associated with the presence of their food, enemies and competitors when searching for patches. Responses to these odours therefore determine the spatial distribution of animals, and are decisive for the occurrence and strength of interactions among species. Therefore, a logical first step in studying food web interactions is the analysis of behaviour of individuals that are ...
- Janssen, A., et al. Show all 10 Authors
- Entomologia experimentalis et applicata 2005 v.116 no.2 pp. 135-142
- indigenous species; Podisus nigrispinus; predatory insects; searching behavior; host plants; Eucalyptus; introduced species; phytophagous insects; Geometridae; host range; natural enemies; Brazil
- ... Adaptation to novel host plants is a much-studied process in arthropod herbivores, but not in their predators. This is surprising, considering the attention that has been given to the role of predators in host range expansion in herbivores; the enemy-free space hypothesis suggests that plants may be included in the host range of herbivores because of lower predation and parasitism rates on the nov ...