Temperature organ
A temperature organ is a device used to determine the preferred ambient temperature of animals .
The temperature organ is usually constructed as an elongated container, the bottom of which has a temperature gradient from one end to the other due to appropriate heating / cooling (some variants are ring-shaped). Based on the area in which the animals used prefer to stay, their preferred temperature (also referred to as thermal preference or temperature preference) can be determined. With the appropriate duration of the experiment, the preference range can be recognized not only from where the majority of the animals are, but also from where they reproduce or grow larger.
With the help of this temperature organ, the tolerance range, i.e. the range in which the animal is viable, can be read off and, if necessary, the minimum, pessimum and optimum can be determined and represented graphically.
A generated by a temperature Organ temperature gradient can be of even to determine the optimum temperature for germination and growth plants use.
Temperature organ of a student experiment
Evaluation of a cricket experiment using the temperature organ
source
- Heinz Penzlin : Textbook of Animal Physiology , 3rd Edition, Stuttgart, G. Fischer, 1981. ISBN 3-437-20241-3
- Natura , 1st edition, Stuttgart, Ernst Klett, 2005, ISBN 3-12-045300-5
Web links
- Building instructions for a simple temperature organ ( Memento from September 28, 2008 in the Internet Archive )