Habitat assessment by parasitoids: mechanisms for patch use behavior
نویسندگان
چکیده
Cédric Tentelier, Emmanuel Desouhant, and Xavier Fauvergue Unité Mixte de Recherche 1112, Réponse des Organismes aux Stress Environmentaux, Institut National de la Recherche Agronomique, 400 route des Chappes BP 167, 06903 Sophia Antipolis Cedex, France and Unité Mixte de Recherche 5558 ‘‘Biométrie et Biologie Evolutive,’’ Université Claude Bernard Lyon 1, 43 Boulevard du 11 novembre 1918, 69622 Villeurbanne Cedex, France
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Herbivore-induced plant volatiles as cues for habitat assessment by a foraging parasitoid.
1. Animals usually require information about the current state of their habitat to optimize their behaviour. For this, they can use a learning process through which their estimate is continually updated according to the cues they perceive. Identifying these cues is a long-standing but still inveterate challenge for ecologists. 2. The use of plant cues by aphid parasitoids for the assessment of ...
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Habitat fragmentation can disrupt communities of interacting species even if only some of the species are directly affected by fragmentation. For instance, if parasitoids disperse less well than their herbivorous hosts, habitat fragmentation may lead to higher herbivory in isolated plant patches due to the absence of the third trophic level. Community-level studies suggest that parasitoids tend...
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