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]

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      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.

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Universalium. 2010.

Look at other dictionaries:

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  • 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.

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  • 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

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  • 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


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