Allometry is the study of the relationship of body size to shape, anatomy, physiology and finally behaviour, first outlined by Otto Snell in 1892, D'Arcy Thompson in 1917 and Julian Huxley in 1932. Allometry is a well-known study, particularly in statistical shape analysis for its theoretical developments, as well as in biology for practical applications to the differential growth rates of the parts of a living organism's body.
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- Bei der Allometrie (von griechisch allos „anders“; metrie „messen“) geht es um das Messen und Vergleichen von Beziehungen zwischen der Körpergröße und deren Verhältnis zu verschiedensten biologischen Größen. So kann die Leistung eines Organismus beispielsweise nicht kurzerhand von klein auf groß übertragen werden. Auch die Größenverhältnisse innerhalb einer Art können nicht 1:1 umgesetzt werden. Würde zum Beispiel der Kopf vom Säugling zum Erwachsenen proportional zur Gesamtlänge des Körpers zunehmen, müsste unser Kopf circa 45 cm hoch sein.
- Allometry is the study of the relationship of body size to shape, anatomy, physiology and finally behaviour, first outlined by Otto Snell in 1892, D'Arcy Thompson in 1917 and Julian Huxley in 1932. Allometry is a well-known study, particularly in statistical shape analysis for its theoretical developments, as well as in biology for practical applications to the differential growth rates of the parts of a living organism's body. One application is in the study of various insect species, where a small change in overall body size can lead to an enormous and disproportionate increase in the dimensions of appendages such as legs, antennae, or horns. The relationship between the two measured quantities is often expressed as a power-law: or in a logarithmic form: where is the scaling exponent of the law. Methods for estimating this exponent from data are complicated because the usual method for fitting lines does not account for error variance in the independent variable (e.g. , log body mass). Therefore, specialized methods can be used, including measurement error models and a particular kind of principal component analysis. Allometry often studies shape differences in terms of ratios of the objects' dimensions. Two objects of different size but common shape will have their dimensions in the same ratio. Take, for example, a biological object that grows as it matures. Its size changes with age but the shapes are similar. Studies of ontogenetic allometry often use lizards or snakes as model organisms because they lack parental care after birth or hatching and because they exhibit a large range of body size between the juvenile and adult stage. Lizards often exhibit allometric changes during their ontogeny. In addition to studies that focus on growth, allometry also examines shape variation among individuals of a given age (and sex), which is referred to as static allometry. Comparisons of species are used to examine interspecific or evolutionary allometry.
- En biología la alometría se refiere a los cambios de dimensión relativa de las partes corporales correlacionados con los cambios en el tamaño total. El término alometría fue acuñado por Julian Huxley y Georges Teissier en 1936.
- ファイル:Allometric Law of Body Mass vs Cruising Speed in Constructal Theory. JPEG 体重と移動速度のアロメトリー（両対数グラフなので直線になっている） アロメトリー は、生物の体の大きさにかかわらず、2つの指標（たとえば身長と体重）の間に成立する両対数線形関係である。
- Allometrisk vekst (allo = ulike steder, metro = distanse, avstand), er et begrep som blir brukt innen biologi. Ulike deler av organismens anatomi vokser og utvikler seg med ulik hastighet gjennom livsløpet, men opphører som regel i større eller mindre grad når kjønnsmodning og/eller vekst er fullendt. Man skiller mellom to ulike former for allometrisk vekst, som på engelsk kalles for postdisplacement og predisplacement. Førstnevnte går inn under pedomorfose og innebærer at en eller flere strukturer blir hengende etter i utviklingen i forhold til resten av organismen. Sistnevnte går inn under peramorfose og innebærer at en eller flere strukturer blir gjenstand for sterkere og tidligere utvikling enn resten av organismen.
- Аллометрия (греч. állos — другой и métron — мера), неравномерный рост частей тела. Аллометрия может быть отрицательной (например, замедленный рост головы у ребенка) и положительной (например, рост рогов у жвачных животных). Аллометрия выражается изменением как пропорций тела, так и темпов развития различных органов, то есть гетерохронией. Случаи в аллометрии описываются законами и правилами.
- En biologie, l'allométrie exprime la corrélation entre la taille d'un organisme et certains de ses paramètres biologiques. On dit qu'un paramètre suit une loi allométrique lorsqu'il peut s'exprimer en fonction du poids ou de la taille de l'animal. Le plus souvent les relations d'allométrie s'expriment sous forme de fonction puissance ainsi : Avec "a" un coefficient empirique, "P" la valeur du paramètre en question et "m" l'exposant allométrique. On distingue différents types d'allométrie : L’allométrie positive, qui est une augmentation de la taille relative d’une partie d’un organisme par rapport au reste. L’allométrie négative, qui est une diminution de la taille relative d’une partie d’un organisme par rapport au reste. L'isométrie, qui est un changement de la taille non associé à des changements de proportions.
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- Skeleton of an Australian native cat.
- Skeleton of an elephant
- Note the proportionately thicker bones in the elephant, an example of allometric scaling
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- Dasyurus_maculatus_skeleton.jpg
- Elephant_skeleton.jpg
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- En biología la alometría se refiere a los cambios de dimensión relativa de las partes corporales correlacionados con los cambios en el tamaño total. El término alometría fue acuñado por Julian Huxley y Georges Teissier en 1936.
- ファイル:Allometric Law of Body Mass vs Cruising Speed in Constructal Theory. JPEG 体重と移動速度のアロメトリー（両対数グラフなので直線になっている） アロメトリー は、生物の体の大きさにかかわらず、2つの指標（たとえば身長と体重）の間に成立する両対数線形関係である。
- Аллометрия (греч. állos — другой и métron — мера), неравномерный рост частей тела. Аллометрия может быть отрицательной (например, замедленный рост головы у ребенка) и положительной (например, рост рогов у жвачных животных). Аллометрия выражается изменением как пропорций тела, так и темпов развития различных органов, то есть гетерохронией. Случаи в аллометрии описываются законами и правилами.
- Bei der Allometrie (von griechisch allos „anders“; metrie „messen“) geht es um das Messen und Vergleichen von Beziehungen zwischen der Körpergröße und deren Verhältnis zu verschiedensten biologischen Größen. So kann die Leistung eines Organismus beispielsweise nicht kurzerhand von klein auf groß übertragen werden. Auch die Größenverhältnisse innerhalb einer Art können nicht 1:1 umgesetzt werden.
- Allometry is the study of the relationship of body size to shape, anatomy, physiology and finally behaviour, first outlined by Otto Snell in 1892, D'Arcy Thompson in 1917 and Julian Huxley in 1932. Allometry is a well-known study, particularly in statistical shape analysis for its theoretical developments, as well as in biology for practical applications to the differential growth rates of the parts of a living organism's body.
- Allometrisk vekst (allo = ulike steder, metro = distanse, avstand), er et begrep som blir brukt innen biologi. Ulike deler av organismens anatomi vokser og utvikler seg med ulik hastighet gjennom livsløpet, men opphører som regel i større eller mindre grad når kjønnsmodning og/eller vekst er fullendt. Man skiller mellom to ulike former for allometrisk vekst, som på engelsk kalles for postdisplacement og predisplacement.
- En biologie, l'allométrie exprime la corrélation entre la taille d'un organisme et certains de ses paramètres biologiques. On dit qu'un paramètre suit une loi allométrique lorsqu'il peut s'exprimer en fonction du poids ou de la taille de l'animal. Le plus souvent les relations d'allométrie s'expriment sous forme de fonction puissance ainsi : Avec "a" un coefficient empirique, "P" la valeur du paramètre en question et "m" l'exposant allométrique.
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- Allometrie
- Alometría
- Allometry
- Allométrie
- アロメトリー
- Allometrisk vekst
- Аллометрия
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