Pdf a general model for ontogenetic growth under food. A general model for effects of temperature on ectotherm. Fundamental insights into ontogenetic growth from theory and. Recently, the interest in ontogenetic growth model ing has conspicuously revived. Revisiting a model of ontogenetic growth unm biology department. The ontogenetic dynamics of variance suggest two possible scenarios. A mechanistic model for genetic machinery of ontogenetic growth rongling wu,1 zuoheng wang, wei zhao and james m. Spikelet structure and development in cyperoideae cyperaceae. The model predicts that after normalizing for body mass at maturity, all ectotherms should exhibit quantitatively similar trajectories of ontogenetic growth, with temperature affecting only the absolute growth rate. The nsg model was compared with four classic sigmoidal growth models, including the logistic equation, richards, gompertz, and ontogenetic growth models. The model provides the basis for deriving allometric relationships for growth rates and the timing of life history events. Here we investigate the extension of this model to the growth of solid malignant tumors.
In summary, the socalled general ontogenetic growth model ogm is inapplicable to crop growth. Is rate of ontogenetic growth constrained by resource supply or. T1 a general model for ontogenetic growth under food restriction. Department of biology, university of new mexico, albuquerque, new mexico 871, usa department of ecology and evolutionary biology, university of arizona, tucson, arizona 85721, usa. Basic equations of ontogenetic models the energy spent by the organism to construct a cell cannot be estimated by the cell energy content, as done by west et al. Sep 24, 20 read the general ontogenetic growth model is inapplicable to crop growth, ecological modelling on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. The santa fe institute, 99 hyde park road, santa fe, new mexico 87501, usa. A general model for ontogenetic growth university of arizona. Ricklefs department of biology, university of missourist. Dec 01, 2004 two distinct mechanisms underlie ontogenetic growth. In two recent papers, a general framework was proposed for description of. A universal model of ontogenetic growth springerlink.
Here, we derive a general quantitative model based on fundamental principles79 for the allocation of metabolic energy between main. A general model for ontogenetic growth under food restriction chen hou, kendra m. The hypothesized stochastic ontogenetic growth model sogm is shown to entail the interspecies allometry relation. Cheverud department of statistics, university of florida, gainesville, florida 32611 and department of anatomy and neurobiology, washington university school of medicine, st. Aug 23, 2011 a general model for adult growth trajectories of trees illustrating the parameters dopt size at maximum growth rate, k ontogenetic variation in growth rate and max maximum growth rate. They claimed that this model is general for many species. On the basis of resource allocation theory, boege and marquis 2005 predicted that ontogenetic patterns in plant defense are nonlinear, showing an initial decline during the seedling stage, an increase from juvenile to mature stages, and another decline during. We developed theory to account for how growth rate varies with body size, within individuals as they grow to maturity and across species as they evolve. Department of biology, university of new mexico, albuquerque, new mexico 871, usa.
Oct 07, 2011 in this paper, we develop such a general quantitative model based on fundamental principles of metabolic energy allocation during ontogeny. Note that the size at maximum growth rate may i be close to zero monotonic decrease in absolute growth rate through ontogeny after this point, ii be. In summary, we have derived a general quantitative model for understanding growth under fr, which is based on the first principles of energy balance and allometries of metabolism. The parameters in the ogm are only common parameters that can be fitted same as any other descriptive model.
Several equations have been proposed to describe ontogenetic growth trajectories for organisms justified primarily on the goodness of fit rather than on any biological mechanism1,2,3,4,5,6. Our model proposed in this article can identify these two mechanisms underlying ontogenetic growth and development. Here, we derive a general quantitative model based on fundamental principles7,8,9 for the allocation of metabolic energy between maintenance of existing tissue and the production of new biomass. Symmetry free fulltext a new flexible sigmoidal growth model. Even though ontogenetic growth is one of the most fundamental processes in biology, there is little in the way of a general theory of growth. Is rate of ontogenetic growth constrained by resource supply or tissue growth potential. Pdf several equations have been proposed to describe ontogenetic growth trajectories for organisms justified primarily on the goodness of fit rather. Bolt and aviv bergman department of systems and computational biology, albert einstein college of medicine, bronx, ny 10461, usa food restriction fr retards animals growth. The model provides the basis for deriving allometric relationships for growth rates and the timing of life history events2,11,12. Oct 11, 2001 the model provides the basis for deriving allometric relationships for growth rates and the timing of life history events2,11,12. Brown 1, 3 1 department of biology, university of new mexico, albuquerque, nm 871, usa. Prior to the west, brown and enquist models, a general theory of individual.
A general model for ontogenic growth article pdf available in nature 46856. In this paper, we develop such a general quantitative model based on fundamental principles of metabolic energy allocation during ontogeny. A general ontogenetic growth model proposed by west et al. Functional traits shape ontogenetic growth trajectories of. A general model for effects of temperature on ectotherm ontogenetic growth and development wenyun zuo1, melanie e. A general model for effects of temperature on ectotherm ontogenetic growth and development wenyun zuo, 1, melanie e. A general model for ontogenetic growth skip to main content. Several equations have been proposed to describe ontogenetic growth trajectories for organisms justi. Growth models based on first principles or phenomenology. N2 several equations have been proposed to describe ontogenetic growth trajectories for organisms justified primarily on the goodness of fit rather than on any biological mechanism. Ontogenetic development is fuelled by metabolism and occurs primarily by cell division.
A general model for the ontogenetic growth of living organisms has been recently proposed. The reduction in variance did not appear to result from a general regulation of skull size or developmental timing, although skull size may also be regulated and developmental timing is an important component of the variation in skull shape of young house mice. This model the mass of a growing organism is a power function of time is valid only in the initial period of growth. This model predicts growth curves under varying conditions of fr, such as the compensatory growth, different age at which fr begins, its degree and its duration. Model for genetic machinery of ontogenetic growth rongling wu,1 zuoheng wang, wei zhao. Nov 10, 2015 understanding growth of fish is important, both for regulating harvests of wild populations for sustained yields, and for using artificial selection and genetic engineering to increase productivity of domesticated fish stocks. This model predicts growth curves under different conditions of fr figures 2 and 3, and explores the effects of body temperature and metabolic rate on growth. Oct 11, 2001 we thus predict the parameters governing growth curves from basic cellular properties and derive a single parameterless universal curve that describes the growth of many diverse species. The general ontogenetic growth model is inapplicable to. Using ontogenetic techniques, a wide range of taxa were investigated, including some controversial ones, in order to find morphological arguments to understand the nature of the spikelet in cyperoideae. An evaluation of two controversial metabolic theories of.
There is a rich literature on the control of cell proliferation and differentiation, on the one hand, and on the evolution of life history attributes, on the other. Several equations have been proposed to describe ontogenetic growth trajectories for organisms justified primarily on the goodness of fit rather than on. Ontogeny also ontogenesis or morphogenesis is the origination and development of an organism both physical and psychological, e. A mechanistic model for genetic machinery of ontogenetic growth. In two recent papers, a general framework was proposed for description of ontogenetic development of different organisms at different temperatures west et al.
A variety of in vitro and in vivo data are analysed and compared with the. Recently, the interest in ontogenetic growth modeling has conspicuously revived. Two fundamental patterns ken wilber lincoln, nebraska introduction this article deals with certain fundamental patterns in onto genetic development, particularly as they relate to transper sonal psychology, cartographies of consciousness, and devel opmental hierarchies. A general model for ontogenetic growth bard faculty. A general model for ontogenetic growth under food restriction article pdf available in proceedings of the royal society b. A general model for ontogenetic growth under food restriction. They also developed other ontogenetic growth models based on this model. Is rate of ontogenetic growth constrained by resource.
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