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A female parasitoid wasp (Euplemus vuilletti) feeds from its host, a beetle larva (Callosobruchus maculatus).

A female parasitoid wasp (Euplemus vuilletti) feeds on its host, a beetle larva (Callosobruchus maculatus), by puncturing the beetle's cuticle with its ovipositor. The wasp creates a feeding tube to extract fluids from its host. In this picture the host beetle (bottom) is housed in an artificial seed made of a gelatin capsule, which allows observation of the feeding tube (white tube) without altering the wasp's feeding behavior. The feeding tube begins at the host surface and ends at the surface of the capsule. Females of this parasitoid species can either feed on a host or lay an egg on it. This photograph originally appeared on the cover of Ecology (86:3) in March of 2005.
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Primary or BEN resource type
Discipline Specific Core Concepts
Life science discipline (subject)
Keywords parasite, parasitoid, feeding, parasitism, prey, host, ovipositor
Key taxa Hymenoptera, Hymenoptera, Coleoptera, Bruchidae, Euplemus vuilletti, Callosobruchus maculates
Intended End User Role
Educational Language
Pedagogical Use Description This photograph can be used to illustrate parasitism in general and as a specific example of a feeding method in which the female wasp uses her ovipositor to create a feeding tube. The use of the gelatin capsule provides a unique view of the feeding process. The photograph could be used as a starting point for discussions of parasitism, parasitoids, and feeding behavior.
Primary Author Controlled Name
Primary Author Affiliation Centre National de la Recherche Scientifique
Primary Author email
Rights Copyright 2005 by the Ecological Society of America.
Date Of Record Submission 2008-04-04

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