Tooth Size/Body Size in Gorilla gorilla and Pongo pygmaeus

Johnson, A.E.

doi:10.1177/00220345780570041201

Cited by 4 publications

(2 citation statements)

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“…Phenotypic correlation studies performed on modern human populations typically find weak or no correlation between tooth size and body size (Garn et al, 1968;Henderson and Corruccini, 1976;Anderson et al, 1977;Siegel and Gest, 1980;Kieser and Groeneveld, 1990;Lease and Harris, 2001), unless adult male and female samples are pooled without correcting for sexual size dimorphism (Anderson et al, 1977;Siegel and Gest, 1980;Perzigian, 1981;Kieser and Groeneveld, 1990). Given that higher correlations are found in primate species with significant levels of sexual dimorphism (Martin, 1971;Lauer, 1975;Swindler and Sirianni, 1975;Lavelle, 1977;Johnson, 1978), these correlations are likely an artifact of the disparity between males and females (calculating correlations from mixed samples) rather than evidence of a general pattern of covariance (Wood, 1979).…”

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confidence: 99%

Evolution of genetically correlated traits: Tooth size and body size in baboons

Hlusko

Lease

Mahaney

2006

American J Phys Anthropol

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Within a population, only phenotypic variation that is influenced by genes will respond to selection. Genes with pleiotropic effects are known to influence numerous traits, complicating our understanding of their evolution through time. Here we use quantitative genetic analyses to identify and estimate the shared genetic effects between molar size and trunk length in a pedigreed, breeding population of baboons housed at the Southwest National Primate Research Center. While crown area has a genetic correlation with trunk length, specific linear measurements yield different results. We find that variation in molar buccolingual width and trunk length is influenced by overlapping additive genetic effects. In contrast, mesiodistal molar length appears to be genetically independent of body size. This is the first study to demonstrate a significant genetic correlation between tooth size and body size in primates. The evolutionary implications are discussed.

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confidence: 99%

Evolution of genetically correlated traits: Tooth size and body size in baboons

Hlusko

Lease

Mahaney

2006

American J Phys Anthropol

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“…For the body weight parameter, none of the results are signi®cant whatever the comparisons made between older and younger levels or warm and cold levels. This can be explained by the lack of any correlation between tooth size and body weight at the intraspeci®c level (Garn et al 1968;Johnson 1978) in contrast to the interspeci®c level (Prothero & Sereno 1982;Gingerich & Smith 1985). …”

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confidence: 99%

Relation between climatic fluctuation and morphological variability in Microtus (Terricola) grafi (Arvicolinae, Rodentia) from Bacho Kiro (Bulgaria, Upper Pleistocene)

Montuire

Brunet‐Lecomte

2004

LET

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Morphological variability within the species Microtus (Terricola) grafi is investigated in relation to the parameters of time and climate. Microtus (Terricola) grafi has been described from the Upper Pleistocene cave of Bacho Kiro (Bulgaria), which has yielded numerous teeth from several levels reflecting climatic fluctuations. The first lower molars are analyzed by 23 biometric variables so as to quantify tooth shape and its variation with time and climate. This morphological analysis reveals a number of shape indexes reflecting whether an individual lived in warm or cold conditions. The most significant result is that individuals living in warm conditions exhibit the more primitive feature of having a less tilted pitymyan rhombus.

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