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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Seasonal variation of hypoxic and hypercarbic ventilatory responses in the lizard Tropidurus torquatus

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Longhini, Leonardo S. [1] ; Porto, Lays S. [1] ; Rocha, Aline C. G. [1] ; Bicego, Kenia C. [1] ; Klein, Wilfried [2] ; Gargaglioni, Luciane H. [1]
Total Authors: 6
[1] Univ Estadual Paulista, Dept Morfol & Fisiol Anim, Jaboticabal, SP - Brazil
[2] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Biol, Ribeirao Preto, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Web of Science Citations: 0

Carbon dioxide (CO2) and oxygen (O-2) influence the breathing pattern of reptiles, especially when CO2 is in excess or O-2 at low concentrations and the effects of these gases on the respiratory response varies according to the species. In addition to respiratory gases, seasonal changes can also modulate breathing pattern and ventilatory responses to hypoxia and hypercarbia. Therefore, the present study investigated the breathing pattern and ventilatory responses to hypercarbia (5% CO2) and hypoxia (5% O-2) of the Neotropical lizard Tropidurus torquatus over a period of one year, covering all seasons (summer, autumn, winter and spring). Our data suggest that like other ectothermic sauropsids, Tropidurus torquatus possesses distinct ventilatory responses to hypoxia and hypercarbia, being more sensitive to changes in CO2 than in O-2. Additionally, the ventilatory responses to hypoxia were more pronounced during summer and hypercanic and pos-hypercapnic ventilatory response was reduced during spring, suggesting that seasonality modulates the control of ventilation in this species. (AU)

FAPESP's process: 11/02008-3 - Breathing pattern and seasonal effect on ventilatory response to hypoxia and hypercarbia in Tropidurus torquatus
Grantee:Lays de Souza Porto
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 18/01899-0 - Cardiorespiratory responses to temperature changes during the larval stage of a native amphibian specie of the Cerrado, Boana lundii (Anura, Hylidae)
Grantee:Leonardo Sambini Longhini
Support type: Scholarships in Brazil - Master
FAPESP's process: 16/24577-3 - Neuroanatomical and functional alterations of the respiratory system during sleep and wakefulness in an experimental model for Alzheimer's disease
Grantee:Luciane Helena Gargaglioni Batalhão
Support type: Regular Research Grants