Peptidergic innervation of the excurrent ostia of two orthopteroid insects

• Autorzy: Lange A.B. , Da Silva R.
• Języki publikacji: EN

Abstrakty

EN

The dorsal vessels of two Orthopteroid insects, the African migratory locust, Locusta migratoria, and the Vietnamese stick insect, Baculum extradentatum, were examined for their morphology. The dorsal vessels of both of these species consist of a tubular heart and an aorta that extends anteriorly into the head. Alary muscles, associated with the hearts, are anchored to the body wall with attachments to the dorsal diaphragm. Alary muscle contraction draws haemolymph into the heart through incurrent ostia. Excurrent ostia are present in both species with 7 pairs in the locust and 3 pairs in the stick insect. Each excurrent ostium is made up of a mass of cells that produce openings or slits that allow the haemolymph to exit the heart and enter the perivisceral cavity directly without traveling through the aorta. Muscle fibers are associated with the excurrent ostia and these receive innervation from nerve processes containing proctolin-like immunoreactivity. These data indicate that the excurrent ostia are most likely under modulation from neuropeptides that might result in microcirculatory changes in these insects.

Słowa kluczowe

EN

morphology; immunohistochemistry; orthopteroid insect; Vietnamese stick insect; scanning electron microscopy; Baculum extradentatum; African migratory locust; ostia zob.ostium; ostium; proctolin; peptidergic innervation; insect; Locusta migratoria; heart; excurrent ostium

• Wydawca: -
• Czasopismo: Pestycydy
• Rocznik: 2007
• Numer: 3-4
• Opis fizyczny: p.11-16,fig.,ref.

Twórcy

autor

Lange A.B.

• University of Toronto Mississauga. 3359 Mississauga Rd., Mississauga, ON. L5L 1C6, Canada

autor

Da Silva R.

Bibliografia

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