Optimal and near-optimal exponent-pairs for the Bertalanffy-Putter growth model.

ABSTRACT: The Bertalanffy-Pütter growth model describes mass m at age t by means of the differential equation dm/dt = p * m ^a  - q * m^b . The special case using the von Bertalanffy exponent-pair a = 2/3 and b = 1 is most common (it corresponds to the von Bertalanffy growth function VBGF for length in fishery literature). Fitting VBGF to size-at-age data requires the optimization of three model parameters (the constants p, q, and an initial value for the differential equation). For the general Bertalanffy-Pütter model, two more model parameters are optimized (the pair a < b of non-negative exponents). While this reduces bias in growth estimates, it increases model complexity and mor

SUBMITTER: Renner-Martin K 

PROVIDER: S-EPMC6254241 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature