Dictionary » E » Estivation

Estivation

Definition

noun

(1) (botany) The arrangement of petals (as well as sepals) within a flower bud that is yet to open.

(2) (zoology) The lack of or slowing of activity and metabolism during hot, dry season such as summer; summer dormancy; prolonged and deep torpor during the hot, dry season.


Supplement

In botany, estivation may be valvate, imbricate, plicate, or contorted.

In zoology, while hibernation refers to dormancy during the cold season, estivation pertains to a state where some animals go through dormancy or lack of activity during the warm, arid season.


Word origin: Latin aestivare, from aestus, (heat).

Related form(s): estivate (verb)

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Re:

... is itself determined by the genome. The fact remains that changes that are not inherited do not constitute evolution. 2. The earthworm aestivation, obviously is a physiological regulation in the body, the force of hormones is greater than genes. We can still measure their adaptation ...

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by robsabba
Wed Nov 18, 2009 4:39 pm
 
Forum: Evolution
Topic: About Physiological Darwinism:From Fitness to Optimality
Replies: 13
Views: 17164

About Physiological Darwinism:From Fitness to Optimality

... can not be explained by the traditional genotype theory. These phenomena in fact "be selected and be not inherited." 2. The earthworm aestivation, obviously is a physiological regulation in the body, the force of hormones is greater than genes. We can still measure their adaptation ...

See entire post
by wellalt
Wed Nov 18, 2009 7:14 am
 
Forum: Evolution
Topic: About Physiological Darwinism:From Fitness to Optimality
Replies: 13
Views: 17164


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