In‐flight orientation to volatiles from the plant‐host complex in <i>Cotesia rubecula</i> (Hym.: Braconidae): increased sensitivity through olfactory experience

Kaiser, Laure; Cardé, Ring T.

doi:10.1111/j.1365-3032.1992.tb00990.x

Cited by 50 publications

(26 citation statements)

References 33 publications

(22 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Increase in behavioral response to an olfactory stimulus after exposure to it has been rarely observed in insects thus far. As a matter offact, it has not been found in bees (Menzel & Bitterman, 1983;HuberBakchine & Pham-Delegue, personal communication) or in flies (Nelson, 1971, cited in McGuire, 1984, but it has been reported in two specialist larval parasitic wasps exposed to host odors, Venturia canescens (Thorpe, 1938) and Cotesia rubecula (Kaiser & Carde, 1992). In these experiments, an increased response to the previously experienced scent was observed, whereas we also found an effect on the response to a nonexperienced scent.…”

Section: Discussioncontrasting

confidence: 40%

Induction of odor preference in a specialist insect parasitoid

Kaiser

Jong

1995

Animal Learning & Behavior

View full text Add to dashboard Cite

This paper deals with the effect of associative and nonassociative odor conditioning on odor preference in a specialist larval parasitic wasp of Drosophila melanogaster, Leptopilina boulardi. Differently experienced females were offered a choice between banana and strawberry odors in a fourarmed olfactometer. Wasps that were allowed to oviposit in an odorless airflow before testing exhibited no significant response to the odors, whereas females with an oviposition experience in the presence of an odor clearly preferred the scent that they had experienced. Furthermore, exposure to strawberry odor after oviposition could also induce a preference for strawberry or banana odor, depending on the concentrations of both scents used for conditioning and testing. This effect was independent of the time elapsed between oviposition and strawberry exposure, suggesting that it was caused by nonassociative conditioning and not by backward associative learning. Exposure to banana odor after oviposition had no effect on females' responses. Variations in odor concentrations also influenced the expression of associative learning, although to a much lesser extent.

show abstract

Section: Discussioncontrasting

confidence: 40%

Induction of odor preference in a specialist insect parasitoid

Kaiser

Jong

1995

Animal Learning & Behavior

View full text Add to dashboard Cite

show abstract

“…tested parasitoid was introduced on an 35S:ESP leaf from which the caterpillars and their products had been carefully removed as well. This increases the general behavioral response of the parasitoids to plant cues but likely does not induce a shift of preference (Kaiser and Cardé 1992;Bleeker et al 2006;Smid 2006). Wasps were allowed to walk onto the leaves themselves.…”

Section: Methodsmentioning

confidence: 99%

Formation of Simple Nitriles upon Glucosinolate Hydrolysis Affects Direct and Indirect Defense Against the Specialist Herbivore, Pieris rapae

et al. 2008

View full text Add to dashboard Cite

The glucosinolate-myrosinase system, found in plants of the order Brassicales, has long been considered an effective defense system against herbivores. The defensive potential of glucosinolates is mainly due to the products formed after myrosinase-catalyzed hydrolysis upon tissue damage. The most prominent hydrolysis products, the isothiocyanates, are toxic to a wide range of organisms, including herbivorous lepidopterans. In contrast, little is known about the biological activities of alternative hydrolysis products such as simple nitriles and epithionitriles that are formed at the expense of isothiocyanates in the presence of epithiospecifier proteins (ESPs). Here, we used transgenic Arabidopsis thaliana (Brassicaceae) plants overexpressing ESP (35S:ESP plants) to investigate the effects of simple nitriles on direct and indirect defense against the specialist cabbage white butterfly Pieris rapae L. (Lepidoptera, Pieridae). In the 35S:ESP plants, glucosinolates are hydrolyzed mainly to simple nitriles upon tissue disruption, while isothiocyanates are the predominant hydrolysis products in Columbia-0 (Col-0) wild-type plants. The parasitoid Cotesia rubecula (Hymenoptera, Braconidae), a specialist on P. rapae larvae, was significantly more attracted to P. rapaeinfested 35S:ESP plants than to P. rapae-infested Col-0 wild-type plants in a wind tunnel setup. Furthermore, female P. rapae butterflies laid more eggs on Col-0 wild-type plants than on 35S:ESP plants when the plants had been damaged previously. However, when given a choice to feed on 35S: ESP or Col-0 plants, caterpillars did not discriminate between the two genotypes. Growth rate and developmental time were not significantly different between caterpillars that were reared on 35S:ESP or Col-0 plants. Thus, the production of simple nitriles instead of isothiocyanates, as catalyzed by ESP, can promote both direct and indirect defense against the specialist herbivore P. rapae.

show abstract

“…Feeding behavior of Pieris rapae larvae is characterized by frequent interruptions during which the larvae move to another feeding site (92). This movement may fool larval parasitoids into searching in the wrong place (105) as they are attracted to the feeding damage of their host (72,104). 3.…”

Section: Chemical Information In Tritrophic Interactionsmentioning

confidence: 99%

“…More complex and reversible learning processes such as associative learning may be expected when individuals are frequently faced with different foraging situations. Sensitization could be a way to learn herbivore-induced synomones (72). After all, these synomones are already the product of a specific association of a herbivore and plant, and so it seems superfluous for the natural enemy to repeat this association through associative learning.…”

mentioning

confidence: 99%

Ecology of Infochemical Use by Natural Enemies in a Tritrophic Context

Vet¹,

Dicke²

1992

Annu. Rev. Entomol.

1,598

1,279

View full text Add to dashboard Cite

KEY WORDS:predators, parasitoids, searching behavior, learning, evolutionary theory, integrated pest management PERSPECTIVES AND OVERVIEW Parasitoids and predators of herbivores have evolved and function within a multitrophic context. Consequently, their physiology and behavior are influenced by elements from other trophic levels such as their herbivore victim (second trophic level) and its plant food (first trophic level) (126). Natural enemies base their foraging decisions on information from these different trophic levels, and chemical information plays an important role. This review is restricted to the ecology of chemical information from the first and second trophic levels. The importance of so-called infochemicals, a subcategory of semiochemicals, in foraging by parasitoids and predators has been well documented (e.g. reviewed in 31,78,111,183,185), and we do not intend repeat the details. But because of a lack of testable hypotheses, all this research is conducted rather haphazardly: the total puzzle of infochemical use has not been solved for any natural enemy species. Here we approach the use of infochemicals by natural enemies from an evolutionary and ecological standpoint. Our basic concept is that information from the first and second trophic levels differs in availability and in reliability, a difference that shapes the way infochemicals are used by a species. We generate hypotheses on (a) 141

show abstract

In‐flight orientation to volatiles from the plant‐host complex in Cotesia rubecula (Hym.: Braconidae): increased sensitivity through olfactory experience

Cited by 50 publications

References 33 publications

Induction of odor preference in a specialist insect parasitoid

Induction of odor preference in a specialist insect parasitoid

Formation of Simple Nitriles upon Glucosinolate Hydrolysis Affects Direct and Indirect Defense Against the Specialist Herbivore, Pieris rapae

Ecology of Infochemical Use by Natural Enemies in a Tritrophic Context

Contact Info

Product

Resources

About