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      Facultative Hyperparasitism: Extreme Survival Behaviour of the Primary Solitary Ectoparasitoid, Dinarmus basalis

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          Abstract

          This study investigated the egg-laying behaviour of ectoparsitoid, Dinarmus basalis Rondani (Hymenoptera: Pteromalidae), females when faced with a prolonged deprivation of suitable hosts leading to extreme ‘oviposition pressure’. The egg-laying behaviour of virgin D. basalis females was tested with Callosobruchus maculatus (F.) (Coleoptera: Bruchidae) hosts previously parasitized by the conspecific females in which the developing larvae had reached the last larval instar (L5) or pupae. The hyperparasitism did not prevent the occurrence of superparasitism, but only one D. basalis egg from a hyperparasitized D. basalis L5 larvae reached the adult stage due to the solitary behaviour of the D. basalis larvae. Under these experimental conditions, 60.78% of the D. basalis adults emerging from larvae were miniaturized due to the depletion of host resources.

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          Parasitoids: Behavioral and Evolutionary Ecology

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            Parasitoids behavior and evolutionary ecology

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              Insect Hyperparasitism

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                Author and article information

                Journal
                J Insect Sci
                J. Insect Sci
                insc
                Journal of Insect Science
                University of Wisconsin Library
                1536-2442
                2010
                9 July 2010
                : 10
                : 101
                Affiliations
                [1]Institut de Recherches sur la Biologie de l'Insecte, UMR CNRS 6035, Faculté des Sciences, 37200 Tours, France
                Author notes

                Associate Editor: Robert Jeanne was editor of this paper.

                Article
                10.1673/031.010.10101
                3016815
                20874388
                8841ce1e-7427-4fc2-94ec-20c03095845a
                © 2010

                This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 22 August 2008
                : 24 May 2010
                Page count
                Pages: 13
                Categories
                Article

                Entomology
                eupelmus orientalis,interspecific discrimination,intraspecific competition,cleptoparasitic behaviour,bruchidae,callosobruchus maculatus,vigna unguiculata,intraspecific,eupelmus vuilleti

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