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| Fabris,G.; Anselmo-Franci,J.A.; Branco,L.G.S.. |
| Hypoxia elicits hyperventilation and hypothermia, but the mechanisms involved are not well understood. The nitric oxide (NO) pathway is involved in hypoxia-induced hypothermia and hyperventilation, and works as a neuromodulator in the central nervous system, including the locus coeruleus (LC), which is a noradrenergic nucleus in the pons. The LC plays a role in a number of stress-induced responses, but its participation in the control of breathing and thermoregulation is unclear. Thus, in the present study, we tested the hypothesis that LC plays a role in the hypoxia-induced hypothermia and hyperventilation, and that NO is involved in these responses. Electrolytic lesions were performed bilaterally within the LC in awake unrestrained adult male Wistar rats... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nitric oxide; Locus coeruleus; Hypoxia; Ventilation; Body temperature; Rat. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999001100009 |
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| Caruccio,Rodrigo; Vieira,Renata Cardoso; Verrastro,Laura; Machado,Denise Mello. |
| We investigated the following aspects of the biology of a population of Cnemidophorus vacariensis Feltrim & Lema, 2000 during the four seasons: thermal biology, relationship with the thermal environment, daily and seasonal activity, population structure and growth rate. Cnemidophorus vacariensis is restricted to rocky outcrops of the "campos de cima da serra" grasslands on the Araucaria Plateau, southern Brazil, and is currently listed as regionally and nationally threatened with extinction. Data were collected from October 2004 through September 2007 in the state of Rio Grande do Sul. Sampling was conducted randomly from 08:00 a.m. to 6:00 p.m. The capture-mark-recapture method was employed. The lizards were captured by hand, and their cloacal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body temperature; Growth; Density-biomass; Temperate region; Tigmothermy. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212011000300002 |
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| CAMPOS, Z. M. da S.; COUTINHO, M. E.; MAGNUSSON, W.. |
| A temperatura corpórea de 51 jacarés do Pantanal foi monitorada nos períodos de frio e calor em áreas de lagos e rios. A massa corpórea desses jacarés variou de 2 a 42 kg e seu tamanho afetou a temperatura média e a amplitude corpórea. A temperatura média corpórea alcançou 25oC, na estação fria, e 30oC, na estação quente, com valor mínimo de 16,9 oC e máximo de 37,9 oC. A temperatura corpórea de Caiman crocodilus yacare na natureza variou com temperatura do ambiente nas estações fria e quente. No período quente, os jacarés permaneceram mais tempo em áreas sombreadas, tanto na terra como na água, do que expostos diretamente aos raios solares. Sua temperatura corpórea manteve-se próxima à da superfície da água, independente de estarem no sol, na sombra, na... |
| Tipo: Folhetos |
Palavras-chave: Comportamento termal; Temperatura corporal; Caiman crocodilus yacare; Termal behavior; Caimans; Ecologia; Jacaré; Pantanal; Body temperature; Ecology. |
| Ano: 2003 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/811101 |
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