Open Access
Peptides and serotonin control feeding-related events in Rhodnius prolixus
Ian Orchard1
Department of Biology, University of Toronto Mississauga, Mississauga, ON, L5L 1C6, Canada.
DOI: 10.2741/E24 Volume 1 Issue 1, pp.250-262
Published: 01 June 2009
(This article belongs to the Special Issue Developmental and neuronal plasticity)

Rhodnius prolixus periodically gorges on a blood meal that could compromise salt and water balance. This, however, is prevented by rapid production of urine within minutes of feeding. The Malpighian tubules increase their rate of secretion 1,000 fold leading to the production of a hypo-osmotic urine that is high in NaCl content. Feeding and post-prandial diuresis in R. prolixus are tightly coordinated events, involving a variety of neurons within the central nervous system. The present review considers how neurohormones provide flexibility in signaling for the maintenance of hemolymph homeostasis in response to challenges associated with blood-gorging. As will be demonstrated, the overall control of events associated with gorging is complex, and utilizes a range of neuropeptide families and serotonin acting upon a variety of tissues to bias them towards a new functional state.

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Ian Orchard. Peptides and serotonin control feeding-related events in Rhodnius prolixus. Frontiers in Bioscience-Elite. 2009. 1(1); 250-262.