neoteny

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neoteny

 [ne-ot´ĕ-ne]
prolongation of the larval form in a sexually mature organism. adj., adj neoten´ic.

ne·ot·e·ny

(nē-ot'ĕ-nē),
Prolongation of the larval state, as in the Mexican tiger salamander or axolotl, or in certain termite castes held in the larval stage as future replacements of the queen. Compare: pedogenesis.
[neo- + G. teinō, to stretch]

neoteny

(nē-ŏt′n-ē)
n.
1. The retention of juvenile characteristics in the adults of a species, as among certain amphibians. Also called pedomorphism, pedomorphosis.
2. The attainment of sexual maturity and subsequent reproduction by an organism still in its larval stage. Also called pedogenesis2.

ne′o·ten′ic (nē′ə-tĕn′ĭk, -tē′nĭk), ne·ot′e·nous (-ŏt′n-əs) adj.

neoteny

see PAEDOGENESIS.
References in periodicals archive ?
In designing this research, we are pitting an evolutionary disposition to dislike spiders against a genetic disposition to prefer animals with neotenic characteristics, in this case jumping spiders (Family Salticidae).
deppeana, also this taxon shows an evident simplification and reduction in frequency and dimension of the absorbing trichomes passing from the "neotenic" (young) form to the adult form (Adams e Martin 1986), probably counterbalanced by the growth in dimension of the plant and hence the increased capability to intercept and retain water and solutes inside the rosetta leaves.
"Neotenic" means that the salamander "does not metamorphose into a terrestrial form and retains its bright red external gills throughout life." Id.
There are three known si ghtings in the South Dakota Natural Heritage data base (Backlund, personal communication), but whether these represent the mudpuppy or neotenic examples of the tiger salamander is uncertain.
However, the action of thyroxine on neotenic salamander species (i.e., those that do not undergo metamorphosis and reproduce as Killed animals) has varied impacts, ranging from no effect to complete metamorphosis.
The occurrence of neotenic salamanders, Ambystoma tigrinum diaboli Dunn, in Devil's Lake, North Dakota.
All of this is possible precisely because we are neotenic creatures.
Neotenic evolution of Delphinium nudicaule (Ranunculaceae): a hummingbird-pollinated larkspur.
Moreover, a related Mexican salamander, Ambystoma taylory, which lives in Lake Alchichica near Orizaba, has both neotenic and metamorphosed forms.
The life cycle of female mealybugs consists of an egg, often laid inside a filamentous ovisac, 3 nymphal stages, and a wingless neotenic adult stage (Franco et al.
The leaf rachis in climbing Desmoncus (11 of the 12 species)is prolonged into a cirrus, except in Desmoncus stans, which is a small, slightly creeping, often erect palm, interpreted as a neotenic species.