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Structure, distribution, and innervation of sensilla on the ovipositor of the spruce budworm, Choristoneura fumiferana, and evidence of a gustatory function for type II sensilla

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Abstract:

Four types of trichoid sensilla were described on the ovipositor of the spruce budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae). Types I and III sensilla were short and long multiporous hairs, respectively. Type IV sensilla were long and aporous. Each was innervated by a single dendrite. Type II sensilla were multiporous and also had a single terminal pore. They were innervated by four dendrites. Electrophysiological responses were obtained from these type II sensilla to a range of chemical stimuli.

Quatre types de sensilles chétiformes etaient présents sur l'ovipositeur de la tordeuse des bourgeons de l'épinette Choristoneura fumiferana (Clem.) (Lepidoptera : Tortricidae). Les sensilles des types I et III étaient des soies multipores; celles de type I étaient courtes et celles de type III longues. Les sensilles de type IV etaient longues, mais sans pores. Ces trois types de sensilles abritaient tous un seul dendrite. Les sensilles de type II étaient multipores, mais elles avaient aussi un seul pore terminal et elles abritaient quatre dendrites. Avec l'électrophysiologie, nous avons démonté que les sensilles de type II réagissaient à divers produits chimiques.

Document Type: Research Article

Publication date: December 1, 2003

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  • Published since 1929, this monthly journal reports on primary research contributed by respected international scientists in the broad field of zoology, including behaviour, biochemistry and physiology, developmental biology, ecology, genetics, morphology and ultrastructure, parasitology and pathology, and systematics and evolution. It also invites experts to submit review articles on topics of current interest.
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