Answered: Draw a single graph of the data from…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Procedure 2. Temperature selection in two fish species

Many species of animals have been shown to prefer a particular temperature range when placed in a temperature gradient. They are less active at their preferred temperature and thus arrive there by a type of behaviour known as thermokinesis. Fisher and Elson (1950) examined temperature preference in the speckled trout (Cynoscion nebulosus) and the Atlantic salmon (Salmo salar) when placed in a tank with a temperature gradient from 0°C to 22°C. Some of their observations are presented in the following table.

Draw a single graph of the data from the table.
What range of temperature was each species able to tolerate?
What is the preferred temperature of each species?
At what temperatures would you expect each species to be most active?
Why is it important for fish to respond behaviourally to a temperature gradient?

Frequency (% of total
observations)
Temperature (°C)
Trout
Salmon
0.5
4
2.5
7.0
0.5
8
20.0
4.5
10
32.0
10.0
12
25.0
23.0
14
10.0
32.0
16
2.5
21.0
18
0.5
7.0
20
2.0
22
Based on Fisher & Elson (1950).
2.
6.

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