Procedure 3. Living in the Desert: Temperature Tolerance in the Camel Hot deserts are among the most extreme environments on Earth. Camels have evolved a number of physiological adaptations that allow them to survive such conditions. The table below compares the rectal temperature of camels with that of other mammalian species. The range of body temperatures experienced by camels living under desert conditions and the amount of water they lose are indicated in the succeeding tables.How do camels differ from the other animals listed in the table with regard to the range of body temperature experienced?In what circumstances does the camel store excess heat in its body?How does this help the camel to conserve water? AverageRange°C°F°C°FGoat39.1102.338.5–39.7101.3–103.5Rabbit39.5103.138.6–40.1101.5–104.2Stallion37.699.737.2-38.199.0–100.6Camel37.599.534.2-40.793.6–105.3Data based on Anderson (1984). Table 2.12 Physiological measurements on watered andwater deprived camelsNormal (control)camel (wateredeach day and fully Camel deprivedhydrated)of drinking waterMaximum rectal3841temperature (lateafternoon) (°C)Minimal rectal3634temperature(at night) (°C)Evaporation during9.12.8the 10 hottest hoursof the day (L)Table 2.13 Effect of fur on water loss in a camelCoat conditionFur intactFur shornWater loss (L per hour)0.450.9

Camels live in deserts. The temperature in the dessert is hot and dry. Camels have adapted to help…

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Human Anatomy & Physiology (11th Edition)

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Procedure 3. Living in the Desert: Temperature Tolerance in the Camel

Hot deserts are among the most extreme environments on Earth. Camels have evolved a number of physiological adaptations that allow them to survive such conditions. The table below compares the rectal temperature of camels with that of other mammalian species. The range of body temperatures experienced by camels living under desert conditions and the amount of water they lose are indicated in the succeeding tables.

How do camels differ from the other animals listed in the table with regard to the range of body temperature experienced?
In what circumstances does the camel store excess heat in its body?
How does this help the camel to conserve water?

Average
Range
°C
°F
°C
°F
Goat
39.1
102.3
38.5–39.7
101.3–103.5
Rabbit
39.5
103.1
38.6–40.1
101.5–104.2
Stallion
37.6
99.7
37.2-38.1
99.0–100.6
Camel
37.5
99.5
34.2-40.7
93.6–105.3
Data based on Anderson (1984).

Table 2.12 Physiological measurements on watered and
water deprived camels
Normal (control)
camel (watered
each day and fully Camel deprived
hydrated)
of drinking water
Maximum rectal
38
41
temperature (late
afternoon) (°C)
Minimal rectal
36
34
temperature
(at night) (°C)
Evaporation during
9.1
2.8
the 10 hottest hours
of the day (L)
Table 2.13 Effect of fur on water loss in a camel
Coat condition
Fur intact
Fur shorn
Water loss (L per hour)
0.45
0.9

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