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  • KOREAN
  • P-ISSN2287-8327
  • E-ISSN2288-1220
  • SCOPUS, KCI

ISSN : 2287-8327

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Vol.31 No.1

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Life History Traits and the Rate of Molecular Evolution in Galliformes (Aves)

Journal of Ecology and Environment / Journal of Ecology and Environment, (P)2287-8327; (E)2288-1220
2008, v.31 no.1, pp.75-81
Eo, Soo Hyung (University of Georgia)
Eo,, S. H. (2008). Life History Traits and the Rate of Molecular Evolution in Galliformes (Aves). Journal of Ecology and Environment, 31(1), 75-81.

Abstract

Rates of molecular evolution are known to vary widely among taxonomic groups. A number ofstudies, examing various taxonomic groups, have indicate d that body size is negatively and clutch size is positively correlated with the rates of nucleotide substitutions among vertebrate species. Generally, either smaller body mas or larger clutch size is associated with shorter generation times and higher metabolic rates. However, this generality is subject to ongoing debate, and large-scale comparative studies of species below the Order level of the mitochondrial cytochrome b evolution and a range of life history traits, such as body mass and clutch size in the Order Galliformes. This analysis included data from 67 species of Galliformes birds and 2 outgroup species in Anseriformes. In contrast to previous studies, taxa were limited to within-Order level, not to Clas or higher. I found no evidence to support an effect of life history traits on the rate of molecular evolution within the Galliformes. These results suggest that such relationship may be too weak to be observed in comparisons of closely related species or may not be a general pattern that is applicable to all nucleotide sequences or al taxonomic groups.

keywords
Galliformes, Life history, Molecular evolution, Phylogenetic comparative method

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