Foraging behavior of egg parasitoids exploiting chemical information
نویسندگان
چکیده
منابع مشابه
Stochasticity and controllability of nutrient sources in foraging: host-feeding and egg resorption in parasitoids
The trade-off between current and future reproduction has led many organisms experiencing stochastic reproductive opportunities to be flexible in their resource acquisition and allocation rules. Many parasitoid wasps display flexibility in choosing to host-feed or oviposit on a host and possess an ovarian system enabling nutrient reallocation through egg resorption. The aim of this work is to a...
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Plant volatiles released in response to feeding insects are known to attract enemies of the feeding herbivores. In this study, egg deposition by a herbivorous insect was shown to induce a gymnosperm plant to emit volatiles that attract egg parasitoids. Odour from twigs of Pinus sylvestris laden with egg masses of the pine sawfly Diprion pini attracts the eulophid egg parasitoid Chrysonotomyia r...
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Several proxies can be used to estimate the fitness of egg parasitoids: size, longevity, fecundity, mating ability and vagility. All these proxies are positively correlated with the lifetime fitness gain of an individual. However, the phenotypic plasticity, which is the ability of a genotype to produce distinct phenotypes depending on environmental conditions, may alter the value of these proxi...
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متن کاملHost Chemical Footprints Induce Host Sex Discrimination Ability in Egg Parasitoids
Trissolcus egg parasitoids, when perceiving the chemical footprints left on a substrate by pentatomid host bugs, adopt a motivated searching behaviour characterized by longer searching time on patches were signals are present. Once in contact with host chemical footprints, Trissolcus wasps search longer on traces left by associated hosts rather than non-associated species, and, in the former ca...
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ژورنال
عنوان ژورنال: Behavioral Ecology
سال: 2008
ISSN: 1465-7279,1045-2249
DOI: 10.1093/beheco/arn011