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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, ...
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 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 ...
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. ...
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 ...
Mecanismos fisiológicos como efetores da variação individual na tolerância a fatores abióticos (temperatura e hipóxia) nos teleósteos de água doce pacu (Piaractus mesopotamicus) e tilápia-do-Nilo (Oreochromis niloticus)
(Universidade Federal de São Carlos, 2020-12-14)
The anthropic influence on the aquatic environment will be responsible for an increase in the frequency and intensity of exposure of fish to two very important stressors in the viability of these animals: temperature and ...
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 ...
Ajustes cardiovasculares em modelo experimental descerebrado, cascavel sul americana (Crotalus durissus)
(Universidade Federal de São Carlos, 2021-12-03)
The reptile class has considerable importance among vertebrates for investigations about the evolution of modulatory mechanisms in the cardiovascular system. Some cardiovascular studies have been performed with in situ ...