Acclimation and acclimatisation, Biology

Acclimation and Acclimatisation

The tolerance limit of a given species is not fixed. Exposure to a near lethal temperature frequently leads to a specific degree of adaptation so that a previously lethal temperature is tolerated. Frequently, the range of thermal tolerance is different for the same species in summer and in winter. A winter animal exhibits tolerance for temperature so low that it is lethal to a summer animal conversely the winter animal is less tolerant to high temperature than a summer animal.

Such changes in the temperature tolerance with climatic changes are called acclimatisation. Likewise effects can be simulated in laboratory experiments by keeping animals for some time at given temperatures. To distinguish the adaptation or adjustment that takes place in laboratory experiments from natural acclimatisation, the response to experimental conditions is often described by the term acclimation. Indeed, animals may show long-term physiological adjustments in response to diverse environmental agents, including (in addition to temperature) humidity, salinity, oxygen supply, photoperiod and food supply to name a few. Furthermore acclimation or acclimatisation can potentially-be exhibited in virtually any physiological property and sometimes in behavioural and morphological properties as well.

Posted Date: 1/16/2013 5:04:42 AM | Location : United States







Related Discussions:- Acclimation and acclimatisation, Assignment Help, Ask Question on Acclimation and acclimatisation, Get Answer, Expert's Help, Acclimation and acclimatisation Discussions

Write discussion on Acclimation and acclimatisation
Your posts are moderated
Related Questions
Psychiatric Emergmcy: Psychiatric  Emergmcy is  the treatment of disorders of mood, thought and behavior in  an emergency  setting. Psychiatric emergencies are conditions in w

Define effect of Protein deficiency during pregnancy period? The effects of protein deficiency during pregnancy are difficult to separate from the effects of caloric deficit, s

Q. How respiratory pigments act? Respiratory pigments are oxygen-carrying molecules present in the blood. When the oxygen concentration is high for instance, in the pulmonary a

Explain PR Murmur characterstic and graham steel murmur? PR Murmur Characteristic: Blowing, decrescendo murmur heard loudest in 2nd and 3rd left intercostal space with increa

Explain the Conveyor (or Band) Dryers? In the conveyor (or band) dryer, the product is distributed on a moving belt, typically of a perforated plate, that passes through a tunn

Special studies to diagnose IE caused by fastidious bacteria and other organisms must be performed (serological studies). Thereafter, unless clinical or epidemiologic clues suggest

how many kingdom and phylum are there?

Explain the Peptones - Complex Media? Peptones are protein hydrolysates obtained by partial digestion of meat, casein, soya meal, gelatin or other protein source. These provide

Q. Explain the Causes of steatorrhoea? The list of possible underlying causes of steatorrhoea includes: • Malabsorption • Malabiorptian of fats in small intestine •

Explain the Recommended Dietary Allowances - Nutrition? RDA: The RDA is the average daily dietary intake that is sufficient to meet the nutrient requirement of nearly all healt