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  • Angiotensin II  (1)
  • Biosteres tryoni  (1)
  • Springer  (2)
  • Blackwell Publishing Ltd
  • 1
    Electronic Resource
    Electronic Resource
    Effects of angiotensin II on the spontaneous activity of rostral ventrolateral medullary cardiovascular neurons and blood pressure in spontaneously hypertensive rats (1996)
    Springer
    Journal of biomedical science 3 (1996), S. 191-202 
    Details
    ISSN: 1423-0127
    Keywords: Rostral ventrolateral medulla ; Cardiovascular neurons ; Arterial blood pressure ; Angiotensin II ; Hypertension
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The interactive role of rostral ventrolateral medulla (RVL) cardiovascular neurons and brain angiotensin II (Ang II) in regulating the arterial blood pressure was examined by recording simultaneously the spontaneous activity of these spinal projecting neurons and the arterial blood pressure in the pentobarbital-anesthetized spontaneously hypertensive rat (SHR) and its normotensive control, the Wistar Kyoto rat (WKY). It was found that Ang II elicited dose-dependent excitatory responses in a subpopulation of RVL cardiovascular neurons, followed by a subsequent increase in blood pressure. These effects of Ang II were significantly greater in SHR than in WKY. The effects were attenuated or abolished by co-administration of Ang II antagonist, [Sar1, Ile8]-Ang II. Pre-administration of [Sar1, Ile8]-Ang II to RVL using bilateral microinjection attenuated the blood pressure effects of intracerebroventricularly administered Ang II by as much as 70%. These results indicated that spinal projecting RVL cardiovascular neurons are important in mediating the pressor action of Ang II. The enhanced sensitivity and responsiveness of RVL cardiovascular neurons to Ang II may be pertinent to the genesis of hypertension in adult SHR.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02253100
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  • 2
    Electronic Resource
    Electronic Resource
    Survivorship, potential, and realized fecundity ofBiosteres tryoni [Hymenoptera: Braconidae], a larval parasitoid ofCeratitis capitata [Diptera: Tephritidae] (1989)
    Springer
    BioControl 34 (1989), S. 291-297 
    Details
    ISSN: 1573-8248
    Keywords: Biosteres tryoni ; Ceratitis capitata ; survivorship potential fecundity ; realized fecundity ; Biosteres tryoni ; Ceratitis capitata ; survie ; fécondité potentielle ; fécondité réelle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé LesBiosteres tryoni élevés en laboratoire atteignaient le sommet de leur maturation ovarienne le 5e jour après l'émergence chez les ♀♀ vierges et le 7e jour chez les ♀♀ accouplées. Quand il n'était pas permis aux ♀♀ de pondre, le contenu des oocytes était hydrolysé et réabsorbé. Cependant, quand des hôtes étaient disponibles pour la ponte, on notait une augmentation significative du taux de maturation des œufs. La moyenne de la fécondité réalisée durant la vie était 71,7±8,1 et 69,0±6,7 et la longévité moyenne était 13,5±0,9 et 15,1±0,6 jours pour les ♀♀ accouplées et les ♀♀ vierges respectivement.
    Notes: Abstract Laboratory-rearedBiosteres tryoni (Cameron) reached peak ovarian maturation on the 5th and 7th days after emergence in unmated and mated ♀♀, respectively. When ♀♀ were not allowed to oviposit, contents of the oocytes were hydrolyzed and reabsorbed. However, when hosts were available for oviposition a significant increase of egg maturation rate was noticed. Mean realized fecundity during the life span was 71.7±8.1 and 69.0±6.7, and mean longevity was 13.5±0.9 and 15.1±0.6 days for mated and unmated ♀♀ respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02372468
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    Paper (German National Licenses)
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