Asymptotic growth and complex allometry of the brain and body in the white rat.
A new four-parameter version of Pütter's growth curve (Pütter, 1920) is obtained by replacing time by a smooth non-negative function which incorporates an initial delay. Fitted through constrained iteratively-reweighted multiplicative least-squares, this curve provides an accurate description of asymptotic growth and complex allometry of brain weight and body length and weight in a cross-sectional sample of forty-four male white rats.
Jolicoeur
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P
Département de Sciences biologiques, Université de Montréal, Québec, Canada.
Pirlot
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P
D000818:Animals; D001699:Biometry; D001835:Body Weight; D001921:Brain / Q000254:growth & development*; D008962:Models, Theoretical; D009929:Organ Size; D051381:Rats; D011919:Rats, Inbred Strains / Q000254:growth & development*