Neuroendocrine regulation of diuresis and anti-diuresis in the Chagas' disease vector, Rhodnius prolixus.
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چکیده
منابع مشابه
Rhodnius prolixus Malpighian tubules and control of diuresis by neurohormones.
Rhodnius prolixus Malpighian tubules (MTs) are a good model for fluid and ion secretion studies in view of the dramatic postprandial diuresis, which follows its massive blood meals. Ingestion of a blood meal equals to 10-12 times their initial body mass, leads to rapid activation of high output by excretory system, which eliminates 40-50% of the fluid mass. Secretion of ions and water is stimul...
متن کاملThe regulation of haemolymph potassium activity during initiation and maintenance of diuresis in fed Rhodnius prolixus.
The blood-sucking insect Rhodnius prolixus rapidly eliminates a Na(+)-rich K(+)-poor urine after its large meals. K(+)-rich fluid is first secreted by the upper Malpighian tubules and passes to the lower tubules where most of the potassium is reabsorbed. During the initial stimulation of the tubules, the lower tubules must be activated first to avoid loss of potassium. The major element in this...
متن کاملAspects of the control of diuresis in the blood gorging insect, Rhodnius prolixus
Post-feeding diuresis in Rhodnius prolixus is neurohormonally controlled by serotonin and at least one peptidergic diuretic hormone (possibly a CRF-related peptide). These appear to be released by two different neurosecretory groups – 5 dorsal unpaired median (DUM) cells and 5-6 lateral neurosecretory cells of the mesothoracic ganglionic mass. The DUM cells co-localize serotonin and the calcito...
متن کاملThe fluid secreted by the upper segment of Malpighian tubules of Rhodnius prolixus during diuresis
tubules of Rhodnius prolixus during diuresis consists of approximately 100 mmol l–1 NaCl and 80 mmol l–1 KCl (Maddrell and Phillips, 1975). Secretion of ions and osmotically obliged water by tubules of this and other species is driven primarily by an apical vacuolar-type H+-ATPase (Wieczorek et al., 1989; Maddrell and O’Donnell, 1992). It is suggested that electrogenic transport of H+ from the ...
متن کاملA panel of ten microsatellite loci for the Chagas disease vector Rhodnius prolixus (Hemiptera: Reduviidae)
Rhodnius prolixus is the main vector of Chagas disease in Venezuela, where it is found colonising rural housing consisting of unplastered adobe walls with palm and/or metal roofs. Vector control failure in Venezuela may be due to the invasion of houses by silvatic populations of R. prolixus found in palms. As part of a study to determine if domestic and silvatic populations of R. prolixus are i...
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ژورنال
عنوان ژورنال: Frontiers in Endocrinology
سال: 2011
ISSN: 1664-2392
DOI: 10.3389/conf.fendo.2011.04.00041