Airbreathing
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Bacterial Diversity in the Digestive Tracts of Four Indian Air-Breathing Fish Species Investigated by PCR Based Denaturing Gradient Gel Electrophoresis
ABSTRACT An investigation was conducted to identify the allochthonous microbiota (entire intestine) and the autochthonous microbiota in proximal intestine (PI) and distal intestine (DI) of four species of Indian air-breathing fish (climbing perch; Anabas testudineus, murrel; Channa punctatus, walking catfish; Clarias batrachus and stinging catfish; Heteropne
Braz. arch. biol. technol.. Publicado em: 02/12/2016
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2. Hypercarbic cardiorespiratory reflexes in the facultative air-breathing fish jeju (Hoplerythrinus unitaeniatus): the role of branchial CO2 chemoreceptors.
The aim of the present study was determine the roles that externally versus internally oriented CO2/H+ - sensitive chemoreceptors might play in promoting cardiorespiratory responses to environmental hypercarbia in the air-breathing fish.
The Journal of Experimental Biology. Publicado em: 2011
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3. Hypoxic cardiorespiratory reflexes in the facultative air-breathing fish jeju (Hoplerythrinus uniataeniatus): role of branchial O2 chemoreceptors.
Experimental animals. Animal preparation. Denervation of cranial nerves IX (glossopharyngeal and X (vagus). Experimental protocol.
Journal of Comparative Physiology. B. Publicado em: 2011
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4. Autonomic control of cardiorespiratory interactions in fish, amphibians and reptiles
Control of the heart rate and cardiorespiratory interactions (CRI) is predominantly parasympathetic in all jawed vertebrates, with the sympathetic nervous system having some influence in tetrapods. Respiratory sinus arrhythmia (RSA) has been described as a solely mammalian phenomenon but respiration-related beat-to-beat control of the heart has been describe
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-07
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5. Control of respiration in fish, amphibians and reptiles
Fish and amphibians utilise a suction/force pump to ventilate gills or lungs, with the respiratory muscles innervated by cranial nerves, while reptiles have a thoracic, aspiratory pump innervated by spinal nerves. However, fish can recruit a hypobranchial pump for active jaw occlusion during hypoxia, using feeding muscles innervated by anterior spinal nerves
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-05
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6. Respostas cardiorrespiratórias do teleósteo de respiração aérea, Clarias gariepinus, exposto à hipóxia gradual
Peixes de respiração aérea são classificados como respiradores aéreos obrigatórios (aqueles que respiram ar atmosférico independente das tensões de O2 da água) ou facultativos (aqueles que usam o órgão de respiração aérea ABO quando as brânquias não conseguem extrair a quantidade de O2 necessário para manter o metabolismo aeróbico em condi�
Publicado em: 2010
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7. The air-breathing cycle of Hoplosternum littorale (Hancock, 1828)(Siluriformes: Callichthyidae)
Hoplosternum littorale é um peixe de respiração aérea continua que utiliza parte de seu intestino para a extração do oxigênio do ar. Este comportamento de respiração aérea realiza-se em quatro etapas: 1) Subida para a superfície da água; 2) Emergência da boca com a simultânea expansão da cavidade oral e inspiração; 3) Giro do corpo para baix
Neotropical Ichthyology. Publicado em: 2006-09
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8. Efeitos da temperatura nas respostas cardio-respiratórias e na respiração aérea acessória de JEJU, Hoplerythrinus unitaeniatus (Erytrinidae) aclimatados a 15, 20, 25 e 30C e submetidos a variações de O2 ambiental.
Peixes de água doce tropical vivem em ambientes de altas temperaturas e baixas concentrações de O2. Isto resultou, ao longo do processo evolutivo, na necessidade da tomada do ar atmosférico em várias espécies de peixes, a fim de compensar seus requerimentos metabólicos, o que requereu modificações anatômicas, fisiológicas e bioquímicas. Estudos s
Publicado em: 2003
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9. Pertussis toxin treatment alters manganese superoxide dismutase activity in lung. Evidence for lung oxygen toxicity in air-breathing rats.
Exposure of rats to hyperoxia or to treatment with endotoxin, increases lung manganese superoxide dismutase (MnSOD) gene expression. However, the paths by which these environmental signals are transduced into enhanced MnSOD gene expression are unknown. We now provide evidence that heterotrimeric G proteins are involved in the hyperoxia-induced increase in lu
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10. RELATIONSHIP OF SLEEP, RESPIRATION, AND ANESTHESIA IN THE PORPOISE: A PRELIMINARY REPORT*
The porpoise, an air-breathing mammal whose habits are entirely aquatic, presents special problems of respiration, sleep, and anesthesia. These problems have been studied in three species, Tursiops truncatus, Lagenorhynchus obliquidens, and Phocoenoides dalli.
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11. The lung amiloride-sensitive Na+ channel: biophysical properties, pharmacology, ontogenesis, and molecular cloning.
Water balance in the lung is controlled via active Na+ and Cl- transport. Electrophysiological measurements on lung epithelial cells demonstrated the presence of a Na+ channel that is inhibited by amiloride (K0.5 = 90 nM) and some of its derivatives such as phenamil (K0.5 = 19 nM) and benzamil (K0.5 = 14 nM) but not by ethylisopropylamiloride. An amiloride-s
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12. Evolution of the ventricles.
We studied the evolution of ventricles by macroscopic examination of the hearts of marine cartilaginous and bony fish, and by angiocardiography and gross examination of the hearts of air-breathing freshwater fish, frogs, turtles, snakes, and crocodiles. A right-sided, thin-walled ventricular lumen is seen in the fish, frog, turtle, and snake. In fish, there