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A influência da hipóxia severa na sensibilidade barorreflexa de tilápia-do-Nilo (Oreochromis niloticus)
(Universidade Federal de São Carlos, 2019-03-15)
The importance of the circulatory system in homeostasis of different animals is unquestionable. Given that one of the basic factors that determine blood flow is blood pressure, the short- and long-term regulation of this ...
O reflexo barostático em teleósteos: controle cardiorrespiratório, influência do habitat e padronização do Método da Sequência para avaliação do ganho barorreflexo
(Universidade Federal de São Carlos, 2019-03-18)
The regulation of arterial blood pressure by the baroreflex is a sine qua non condition for the maintenance of adequate tissue perfusion and for the prevention of organic lesions in most vertebrates. Fish, as well as other ...
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 ...
Efeitos do surfactante nonilfenol etoxilado em peixes : função cardiorrespiratória e histopatologia em Tilápia-do-Nilo, Oreochromis niloticus, em condições de normóxia e hipóxia aquáticas
(Universidade Federal de São Carlos, 2018-01-26)
Nonylphenol ethoxylate (NPE) is a nonionic surfactant component of many chemical formulations. Investigations on the effects of nonylphenol ethoxylate toxicity and its derivatives on fish mostly focus on endocrine disruption, ...
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 ...
Efeitos do exercício físico moderado e da suplementação da dieta com vitamina C no crescimento e no metabolismo de matrinxã, Brycon cephalus (Günter, 1869) (Teleostei:Characidae)
(Universidade Federal de São Carlos, 2006-04-20)
Moderate exercise training is known to enhance fish appetite, feed conversion efficiency and
growth rate. This type of exercise raises the hematocrit, thus blood hemoglobin concentration and the
oxygen carrying capacity ...
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. ...
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 ...
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 ...
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 ...