Answer to Question #309975 in Zoology for just

Question

Use diagrams and equations to distinguish between the three general types of allometric relationships.

Answer 1

 Allometry is often divided into ontogenetic, static, or evolutionary (Klingenberg & Zimmermann, 1992).

• Ontogenetic allometry refers to shape changes with the ontogenetic stage or age. This is the most important type of allometry for most studies of development.

• Static allometry refers to the shape correlates of size independently of age.

• Evolutionary allometry refers to the shape correlates of size among species.

Ontogenetic, static, and evolutionary allometry and their relationship

(A) Ontogenetic and static allometry and their interrelation. The gray lines depict ontogenetic allometry, or the link between brain size and body size as both grow throughout development, in various individuals of the insectivore Suncus murinus. For distinct S. murinas individuals, each green point represents the final brain and body size. The static allometry for brain size vs body size in S. murinus is shown by the black line that runs between the points. The connection is hypoallometric because the slope of the line () is 1. (B) A comparison of static and evolving allometry. The colored circles represent the static allometries of individual insectivore species, while the colored squares represent the average brain and body size of each species. The evolutionary allometry for brain size vs body size among insectivores is shown by the blue line that runs through the squares. The line's slope () is 1 once more, showing that the connection is hypoallometric. Note that the intraspecific static allometry allometric coefficient (= 0.23) is not the same as the interspecific evolutionary allometry allometric coefficient (= 0.69).