Padrões espaciais da riqueza de espécies de viperídeos na América do Sul: temperatura ambiental vs. cinética-bioquímica
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Data
2009-02-27
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Resumo
The aim of this study was to test
the influence of temperature on metabolic rates of viperid species as the underlying
mechanism to explain the richness pattern of this group in South America, following the
Metabolic Theory of Ecology (MTE) proposed by Allen et al. (2002). We tested MTE
predictions by considering the relationship between the natural logarithm of viperid species
richness and the inverse of temperature (in Kelvin, 1000*K-1) after to correct for spatial
autocorrelation effects and to check whether the linear function presents a slope of -9.0*T.
The relationship between variables presented low correlation coefficient (r2
= 0.216; P <
0.0001) and a slope of -3.737*T (C.I. (95%) ± 0.379).These results showed that viperids
respond in a different way to the temperature gradient in comparison with other taxa and
the prediction of Allen et al. (2002), since the confidence interval of slope in this case does
not include the value of -9.0*T. This study demonstrates that temperature is not the sole
driver of broad-scale spatial pattern of viperid species richness in South America.
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Teoria metabólica da ecologia, Gradientes latitudinais de diversidade, Organismos ectotérmicos, Regra de equivalência energética, Alometria, Metabolic theory of ecology, Latitudinal gradients of diversity, Ectothermic taxa, Energeticequivalence rule, Allometry
Citação
LIMA-RIBEIRO, Matheus Souza; RANGEL, Thiago Fernando Lopes Vale Brito; PINTO, Miriam Plaza; MOURA, Ionai'i Ossami; MELO, Tatiana Lima; TERRIBILE, Levi Carina. Padrões espaciais da riqueza de espécies de viperídeos na América do Sul: temperatura ambiental vs. cinética-bioquímica. Acta Scientiarum. Biological Sciences, v. 32, p. 153-158, 2010. Disponível em: <http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4303/4303>.