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Transcript of Hamsters
Order : Rodentia
Family : Cricetidae
Desert rodent : Northwest Syria
German word --> Hoarders
Body : 15 - 20 cm
Weight : 110 - 140 g
Normal life : 2-3 years
Cheek Pouch = Grocery bag
1/2 of body weight
Full = x2 head
Against heat :
Lower daily water requirement
5mL /100g of body / day
Decreasing water excretion
Against the cold :
Permissive = avoid hibernation if
- Insufficient food store
- Temperature rises
If T < 8°C
- Body temperature
- Heart rate
2 separate chambers
8 feet ~ 2,50 m
2(I 1/1 C 0/0 PM 0/0 M 3/3) = 16
Thanks for your attention !
II- Adaptation :
1- Against heat
2- Against cold
3- Cheeks pouches
Develop many evolutionary strategies :
Most famous : cheeks pouches.