Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Records 1 - 7 / 7

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    Can we extract parasitoids by chewing on a plant? Phytochemical induction in the Cotesia-Pieris-Brassica system
    Mattiacci, L. ; Dicke, M. ; Posthumus, M.A. - \ 1997
    Boletin de la asociacion espanola de entomologia 21 (1997). - ISSN 0210-8984 - p. 31 - 40.
    Can we attract parasitoids by chewing on a plant?
    Mattiacci, L. ; Dicke, M. ; Posthumus, M.A. - \ 1997
    In: Phytochemical induction in the Cotesia-Pieris-Brassica system Boln. Asoc. esp. Ent. 21 - p. 97 - 98.
    Host-age discrimination during host location by Cotesia glomerata, a larval parasitoid of Pieris brassicae.
    Mattiacci, L. ; Dicke, M. - \ 1995
    Entomologia Experimentalis et Applicata 76 (1995). - ISSN 0013-8703 - p. 37 - 48.
    Some parasitoids are restricted with respect to the host stage that they attack and even to a certain age within a stage. In this paper we investigate whether the parasitoid Cotesia glomerata can discriminate between old and young caterpillar instars of its host, Pieris brassicae, before contacting these hosts, since contacts with older instars are very risky with a chance of being killed, due to the aggressive defensive behaviour of the caterpillars.
    The parasitoid Cotesia glomerata (Hymenoptera: Braconidae) discriminates between first and fifth larval instars of its host Pieris brassicae on the basis of contact cues from frass, silk, and herbivore-damaged leaf tissue.
    Mattiacci, L. ; Dicke, M. - \ 1995
    Journal of Insect Behavior 8 (1995). - ISSN 0892-7553 - p. 485 - 498.
    ß-Glucosidase: an elicitor of herbivore-induced plant odor that attracts host-searching parasitic wasps.
    Mattiacci, L. ; Dicke, M. ; Posthumus, M.A. - \ 1995
    Proceedings of the National Academy of Sciences of the United States of America 92 (1995). - ISSN 0027-8424 - p. 2036 - 2040.
    Cabbage plants respond to caterpillar (Pieris brassicae) herbivory by releasing a mixture of volatiles that makes them highly attractive to parasitic wasps (Cotesia glomerata) that attack the herbivores. Cabbage leaves that are artificially damaged and subsequently treated with gut regurgitant of P. brassicae caterpillars release a volatile blend similar to that of herbivore-damaged plants. We demonstrate the presence of ß-glucosidase in P. brassicae regurgitant. Leaves treated with commercial ß-glucosidase (from almonds) release a volatile blend similar to that of leaves treated with P. brassicae regurgitant. In a flight bioassay, leaves treated with almond ß-glucosidase are highly attractive to the parasitic wasp C. glomerata. Furthermore, the wasps do not discriminate between cabbage leaves treated with almond ß-glucosidase and leaves treated with larval regurgitant. ß-Glucosidase was also recorded in cabbage leaf extract, but this is not as effective as caterpillar ß-glucosidase in eliciting the volatile production. Caterpillars that feed on a ß-glucosidase-free diet secrete the enzyme, and their regurgitant is an effective elicitor of the plant response. These findings show that ß-glucosidase is a P. brassicae-secreted elicitor of the defense response of cabbage plants to herbivore injury, inducing the emission of volatiles that are used by parasitoids of the herbivore to locate their victims.
    Induction of parasitoid attracting synomone in Brussels sprouts plants by feeding of Pieris brassicae larvae: role of mechanical damage and herbivore elicitor.
    Mattiacci, L. ; Dicke, M. ; Posthumus, M.A. - \ 1994
    Journal of Chemical Ecology 20 (1994). - ISSN 0098-0331 - p. 2229 - 2247.
    A long-range attractant kairomone for egg parasitoid Trissolcus basalis, isolated from defensive secretion of its host, Nezara viridula.
    Mattiacci, L. ; Vinson, S.B. ; Williams, H.J. ; Aldrich, J.R. ; Bin, F. - \ 1993
    Journal of Chemical Ecology 19 (1993). - ISSN 0098-0331 - p. 1167 - 1181.
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