heterochrony


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Related to heterochrony: Hypermorphosis

heterochrony

(hĕt′ə-rō-krŏn′ē)
n.
A change or set of changes in the timing or duration of an organism's ontogenetic development compared with an ancestral species, resulting in morphological differences between ancestor and descendant.

het′e·ro·chron′ic, het′e·ro·chron′ous adj.
References in periodicals archive ?
The analysis of ontogenetic trajectories: When a change in size or shape is not heterochrony.
While James's "cross-cuts" mirror the dissociations of heterochrony, their results (creative genius, divine inspiration) mirror de Beer's theory of clandestine evolution.
The ontogeny of Pseudis platensis (Anura, Hylidae): Heterochrony and the effect of larval development on postmetamorphic life.
With the exception of Brassicaceae, Brassicales are not exceptional among angiosperm orders in their degree of heterochrony.
Analyses of ontogeny restricted to a single species are not enough to explain the direction of evolutionary change in certain structures within taxonomic groups; these analyses also cannot define the growth of a structure as paedomorphic or peramorphic, leaving the realm of heterochrony.
The ability to exhibit such heterochrony in life history processes has played an important role in the evolution of many groups of salamanders, including the members of the Ambystomatidae, and more specifically, certain members of the tiger salamander complex (Collins, 1981; Routman, 1993; Whiteman et al.
2013): Ontogeny in the tube-crested dinosaur Parasaurolophus (Hadrosauridae) and heterochrony in hadrosaurids.
High levels of diversity in frogs have been attributed to two general mechanisms: (1) the evolution of a dramatic metamorphosis between larval and adult stages which potentially frees each stage to evolve relatively independently (Haas, 2001: Svensson and Haas, 2005), (2) heterochrony where features shift in their relative timing of development with respect to other features (Fabrezi and Quinzio, 2008; Fabrezi and Lobo, 2009; Vera-Candioti et al.
Modernity, Heterochrony of Gender Construct and Libidinal Economy: A Dialogic Reading".
Kovac V (2002) Synchrony and heterochrony in ontogeny (offish).