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Hamsters

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by

Marie Hudo

on 6 December 2013

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Transcript of Hamsters

Hamsters
Generality
Taxonomy
Order : Rodentia

Family : Cricetidae

Desert rodent : Northwest Syria

25 species
5 common




Adaptation
Adaptation
Name :
German word --> Hoarders

Body : 15 - 20 cm

Weight : 110 - 140 g

Specific dentition

Normal life : 2-3 years
HUDO Marie-Catherine
Group B5

Adaptation
Nocturnal-foraging :
Gathering food
Nesting material

Cheek Pouch = Grocery bag
1/2 of body weight
Full = x2 head

Baby carrier
Against heat :

Lower daily water requirement
5mL /100g of body / day

Decreasing water excretion
Against the cold :

Hibernation
Permissive = avoid hibernation if
- Insufficient food store
- Temperature rises

If T < 8°C
- Body temperature
- Heart rate
- Respiration

Burrows
2 separate chambers

8 feet ~ 2,50 m

Live alone

Aggressive

Territorial
2(I 1/1 C 0/0 PM 0/0 M 3/3) = 16
1
2
3
4
5
6
Syrian
Campbells
Roborovski Dwarf
Chinese
White winter
Thanks for your attention !
Overview
Introduction

I- Presentation
1- Generality
2- Taxonomy
3- Burrows

II- Adaptation :
1- Against heat
2- Against cold
3- Cheeks pouches

Conclusion
Conclusion
Develop many evolutionary strategies :

physiological

physiognomy

behavioral

Most famous : cheeks pouches.



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Full transcript