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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/112825
Title: 
Temperature and thermal regime effects on the specific dynamic action of Bothrops alternatus (Serpentes, Viperidae)
Author(s): 
Institution: 
  • Universidade Estadual Paulista (UNESP)
  • Inst Nacl Ciencia & Tecnol Fisiol Comparada FAPES
ISSN: 
0173-5373
Sponsorship: 
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
  • Fundação para o Desenvolvimento da UNESP (FUNDUNESP)
Sponsorship Process Number: 
FAPESP: 09/03186-2
Abstract: 
Metabolic studies in ectothermic vertebrates are, almost always, conducted at a constant temperature, a valid and recommended procedure in most instances. However, for long term measurements, for example during snakes digestion, keeping experimental temperature constant subjects the animals to a condition potentially quite diverse from what animals may experience in nature. Thus, we investigated the influence of constant (20 degrees C, 25 degrees C, and 30 degrees C) and fluctuating (circadian thermoperiod cycles of 20:30 degrees C, 12:12 h) temperatures regimes on the post-prandial metabolic response of the Crossed pit viper, Bothrops alternatus. Maximum oxygen consumption rates ((V) over dot O-2peak) during digestion increased with temperature, while the time to reach these rates (T-peak) and the duration of the digestive process decreased as temperature was elevated. Both, scope ((V) over dot O-2peak/RMR) and SDA coefficient were not influenced by temperature. When compared to the results obtained at constant 25 degrees C (which is equivalent to the average temperature of the fluctuating regime), the fluctuating temperature regime caused a decrease in RMR and (V) over dot O-2peak accompanied by an increase in digestion duration. Thermal regime did not affect the energetic cost of digestion in B. alternatus.
Issue Date: 
1-Jan-2013
Citation: 
Amphibia-reptilia. Leiden: Brill Academic Publishers, v. 34, n. 4, p. 483-491, 2013.
Time Duration: 
483-491
Publisher: 
Brill Academic Publishers
Keywords: 
  • energetics
  • metabolism
  • postprandial
  • snakes
  • thermoperiod
Source: 
http://dx.doi.org/10.1163/15685381-00002903
URI: 
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/112825
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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