Result of Your Query

A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Z

paedomorphosisPädomorphose (ger.)

  • The retention of juvenile or larval characteristics in a reproductively mature organism; esp. the appearance in an adult organism of the juvenile or larval characteristics of an ancestral form. (OED)
    development paedomorphism

    In other articles I propose to deal with the origin and significance of larval forms, and to draw attention to some further examples of the influence of larval characters upon adult organisation, to which I apply the term ‘Pædomorphosis’.

    Garstang, W. (1922). The theory of recapitulation. J. Linn. Soc. London (Zool.) 35, 81-101: 100.

    paedomorphosis in dicotyledonous woods
    Carlquist, S. (1962). A theory of paedomorphosis in dicotyledonous woods. Phytomorphol. 12, 30-45.

    Negative perturbations in growth rate and offset signal produce descendants whose morphology resembles juvenile stages in the ancestor. We call these forms, collectively, paedomorphs, and the retarding process which produces them paedomorphosis.

    Alberch, P., Gould, S.J., Oster, G.F. & Wake, D.B. (1979). Size and shape in ontogeny and phylogeny. Paleobiology 5, 296-317: 306.


    paedomorphosis The retention of juvenile characters of ancestral forms by adults, or later ontogenetic stages, of their descendants; superlarvation; paedomorphic, paedomorphism, pedomorphic, pedomorphismcf. neoteny, progenesis.

    Lincoln, R.J., Boxshall, G.A. & Clark, P.F. (1982). A Dictionary of Ecology, Evolution and Systematics: 178.