diapause

diapause
/duy"euh pawz'/, n., v., diapaused, diapausing. Zool.
n.
1. a period of hormonally controlled quiescence, esp. in immature insects, characterized by cessation of growth and reduction of metabolic activity, often occurring seasonally or when environmental conditions are unfavorable.
v.i.
2. to undergo diapause.
[1890-95; < Gk diápausis; see DIA-, PAUSE]

* * *

      spontaneous interruption of the development of certain animals, marked by reduction of metabolic activity. It is typical of many insects and mites, a few crustaceans and snails, and perhaps certain other animal groups. This period of suspended development is an apparent response to the approach of adverse environmental conditions. It may occur during any life stage but is most common among pupae (e.g., the cocoons of moths).

      Diapause sets in when the bodily concentrations of growth and molting hormones decrease, which usually coincides with changes in day length, temperature, or abundance of food. Diapause is genetically determined but may be eliminated experimentally if the animals are raised under constant and favourable environmental conditions.

* * *


Universalium. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Diapause — is the delay in development in response to regularly and recurring periods of adverse environmental conditions.[1][2] It is considered to be a physiological state of dormancy with very specific initiating and inhibiting conditions. Diapause is a… …   Wikipedia

  • diapause — ● diapause nom féminin Arrêt temporaire de l activité ou du développement chez les insectes, en hiver, ou à la saison sèche, ou en cas de carence alimentaire. diapause [djapoz] n. f. ÉTYM. 1942; de dia , et pause. ❖ ♦ Zool. Arrêt temporaire d un… …   Encyclopédie Universelle

  • diapause — diapause. См. диапауза. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Diapause — Diapause, bei Insekten und Spinnentieren verbreiteter zeitweiliger Stillstand der postembryonalen Entwicklung, für dessen Beginn und Ende häufig bestimmte Umweltbedingungen als Auslöser wirken (z.B. Photoperiode, Temperatur, Nahrungsmangel), der… …   Deutsch wörterbuch der biologie

  • diapause — ☆ diapause [dī′ə pôz΄ ] n. [Gr diapausis, a pause < diapauein, to bring to an end, pause: see DIA & PAUSE] a period of delayed development or growth accompanied by reduced metabolism and inactivity, esp. in certain insects, snails, etc …   English World dictionary

  • Diapause — Als Dormanz werden alle Formen der Entwicklungsverzögerung bei Tieren und Pflanzen bezeichnet. Diese sind teilweise durch Außenfaktoren bedingt, sie können jedoch auch genetisch und hormonell gesteuert sein. Dormanzphasen gewährleisten vor allem… …   Deutsch Wikipedia

  • Diapause — La diapause est une phase génétiquement déterminée dans le développement d un organisme où il diminue l intensité de ses activités métaboliques. On considère que l animal ou la cellule (bactérie, champignon...) est en vie ralentie selon des… …   Wikipédia en Français

  • Diapause — Dia|pau|se 〈f. 19; Biol.〉 = Latenzperiode (1) * * * Diapause   [griechisch »das Dazwischenausruhen«], Entwicklungsruhe in der Gesamtentwicklung, besonders von Insekten, z. B. während der Embryonalentwicklung, der Larven oder Puppenstadien und der …   Universal-Lexikon

  • diapause — di•a•pause [[t]ˈdaɪ əˌpɔz[/t]] n. v. paused, paus•ing 1) ent zool. a period of hormonally controlled quiescence characterized by cessation of growth and reduction of metabolic activity 2) zool. to undergo diapause • Etymology: 1890–95; < Gk… …   From formal English to slang

  • diapause — noun Etymology: Greek diapausis pause, from diapauein to pause, from dia + pauein to stop Date: 1893 a period of physiologically enforced dormancy between periods of activity …   New Collegiate Dictionary

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”