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RODENTS
14/11/22
Ikram AKLI
Presenation
Introduction
- Rodents are mammals of the order Rodentia.
- Characterized by a single pair of continuously growing incisors in each of the upper and lower jaws.
- 40% of all mammal species are rodents.
- They are extremely diverse in their ecology and lifestyles and can be found in almost every terrestrial habitat, including human-made environments.
Why recognize rodent pests?
why recognize them
Rodent pests can have health, economic and ecological impacts. This is why it is essential to identify them correctly, as this will help determine the means of control and thus limit their proliferation
Of the 26 families of rodents found in France, only a few are harmful:
Rodent in habitation : Rat, mouse
Fruit rodent: Dormouse and ferret.
Field rodents: field mice and vole.
aquatic rodents: coypu and muskrat.
Differents types
Examples
Several types of damage are caused by rodents, depending on the type of rodent.
Nuisance of rodents
Rats and Mice
- Gnaws on electrical cables,
- Gnaws on wood,
- Contaminates animal feed
- Eat away at insulation, furniture, electrical wiring,
- Contaminates food supplies,
Dormouse and Ferret
- Trees damge by bark stripping and ring barking
- Eat fruit crops
- Compete with hole-nesting birds for nest boxes, and potentially threaten some species by eating their eggs and young.
- Night noises.
- Feeds on seeds and berries.
- Attacks vegetables and fruits.
- Damages alfalfa, meadows and grain fields.
- Consumes the roots of young trees.
Field Mice and vole
- Their burrows damage the banks.
- Destabilizes the aquatic ecosystem by consuming plants
- Their galleries weaken the land and the dikes,
- Damage the bark of trees
Coypu and Muskrat
Rodents can transmit to humans, directly or indirectly, more than 40 zoonotic pathogens.
haverhill fever, Hantavirus, Leptospirosis, Selmonellose
pathologies
- Trapping if there is a low density of rodents.
- Modify agricultural practices to destroy vole and mole tunnels, including rotation mowing or grazing, tilling, and other mechanical destruction.
- Anticoagulant rodenticides
Managment and control
anticoagulant rodenticides
- The first generation molecules (warfarin, chlorophacinone, coumatetralyl) …) requiring repeated ingestions to be lethal, less tissue-persistent.
- Second generation molecules (difenacoum, brodifacoum, flocoumafen, difethialone and bromadiolone), which are toxic after a unique ingestion.
- Third generation.