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The role of nitric oxide and adrenergic stimulation on the cardiovascular adjustments in South American rattlesnakes (Crotalus durissus)
(Universidade Federal de São Carlos, 2019-05-24)
Understanding the basis of vascular tone regulation is important to comprehend the cardiovascular physiology of any vertebrate. Recent investigations on reptiles have tried that description working on anesthetized animals. ...
Efeito da variação diária na temperatura corporal no incremento metabólico pós-prandial (SDA) da espécie Lithobates Catesbeianus
(Universidade Federal de São Carlos, 2019-08-30)
Introduction: The postprandial metabolic increment is characterized by a fast elevation in postprandial metabolic rate. The increase in O2 consumption continues until reaching a peak of consumption, that may occur days ...
Respostas fisiológicas e bioquímicas do jeju Hoplerythrinus unitaeniatus (Characiformes, Erythrinidae) a exposição aérea
(Universidade Federal de São Carlos, 2006-03-10)
The physiological and biochemical responses to air exposure were analyzed in jeju,
Hoplerythrinus unitaeniatus at 1(T1), 6 (T6) and 12 (T12) hours of exposure and 1
(TR1) e 6 (TR6) hours after returning to water environment. ...
Biomarcadores de estresse oxidativo em tilápia do nilo, Oreochromis niloticus (Teleostei; Cichlidae), expostas ao sulfato de cobre aquático
In this study the effects of the aquatic copper (CuSO4) on biological markers
of oxidative stress were assessed in the plasma, liver, gills and heart of the Nile
tilapia, Oreocrhromis niloticus, exposed for 96 hours to ...
Modulação vascular em rã touro, Lithobates catesbeianus
(Universidade Federal de São Carlos, 2021-11-17)
Maintaining blood pressure stability is essential for cardiovascular homeostasis. Excessive fluctuations may cause deleterious problems such as vascular damage or reduction in tissue perfusion. Therefore, a series of ...
Manejo do cálcio intracelular e influência da temperatura sobre a contratilidade cardíaca de Synbranchus marmoratus.
(Universidade Federal de São Carlos, 2004-07-08)
The present study anlyzed the in vivo and in vitro responses of the myocardium obtained from Synbranchus marmoratus acclimated at 25 ºC and tested at 15, 25 and 35 ºC. The in vivo heart rate (fH bpm) was measured during ...
Alterações bioquímicas e cardio-respiratórias de Tilápia do Nilo (Oreochromis niloticus) frente à exposição sub-letal ao sulfato de cobre.
(Universidade Federal de São Carlos, 2005-09-23)
The present study evaluated the biochemical, hematological and cardio-respiratory responses of Nile tilapia (Oreochromis niloticus) to copper sulfate (CuSO4). A group of fish (T2; n = 8) was exposed to 50% of a CL50 (48 ...
Efeitos da aclimatação térmica no metabolismo aeróbico, parâmetros cardiovasculares e tolerância térmica em girinos de Bokermannohyla ibitiguara
(Universidade Federal de São Carlos, 2020-11-20)
Thermal acclimation is suggested to provide a reversible physiological adjustment in response to environmental changes, conferring resilience in a climate change scenario. Since amphibians may be more vulnerable to habitat ...
Distribuição e orientação dos quimiorreceptores de O2 branquiais em tilápia-do-Nilo (Oreochromis niloticus): controle das respostas cardiorrespiratórias à hipóxia
(Universidade Federal de São Carlos, 2012-08-31)
In fish the O2 chemoreceptors are mainly found in the gill arches and monitor the O2 tensions (PO2) of the inspired water (externally oriented) and/or the arterial blood (internally oriented). During hypoxia these receptors ...
Respostas cardiorrespiratórias do teleósteo de respiração aérea, Clarias gariepinus, exposto à hipóxia gradual
(Universidade Federal de São Carlos, 2010-06-25)
Air-breathing fish are classified as obligatory (when breathing obligatory atmospheric air independently of the water O2 tension) or facultative air-breather (using an air breathing organ ABO -, when theirs gills are not ...