Problems
- Spread serious diseases
- Carry fleas,
- Consume or contaminate
- Gnaw
- Cause a great deal of anxiety
Commensal Rodents
There are three basic type of rodents :
- Norway rat ( rattus norvegious )
- Roof rat ( rattus rattus )
- House mice (mus muscular )
- Destroy & contaminate structure as well as harm young birds and chicks.
- Undesirable in feed and seed stores because destroy the seed, corn.
Bionomic Factor
Vision
- Night vision(can see only in night)
Smelling Organ
- Leave its urine all the way it goes
Hearing
- Afraid of high level noise.
- Detect sound up to look
Sensory organ
- Long mustache and other fine hairs on their body
Taste
- Good tasting
- Can differentiate the food.
1. Norway ( Rattus Norvegious )
Habitat
- Norway rats live in close association with people.
- Although they can climb, Norway rats tend to inhabit the lower floors of multistory buildings.
- Found in building foundation.
Food Habits
- Will eat nearly any type of food.
- They prefer cereal grains, meats and fish, nuts, and some types of fruit.
General Biological and Reproductive
- Rats have poor eyesight
- Their hearing and their excellent senses of smell, taste, and touch
- Litters of 6 to 12 young are born 21 to 23 days after conception.
- They become completely independent at about 3 to 4 weeks and reach Reproductive maturity at 3 months of age.
2.Roof Rat ( Rattus Rattus )
Habitat
- They have been found in swimming pools, laundry rooms, attics, garages, and patios.
- They’ve been seen on power lines in the alleys.
- Roof rats are strongly arboreal (tree inhabitants) and travel along power lines to trees, oleanders, vines, and roofs.
Food Habitat
- All types of citrus and other fruits, and nuts.
- Bird seed (both in feeders and stored in bags)
- Dog and cat food (left outside after dark are favorites)
General biology
- Young are born in a nest about 21 to 23 days after conception.
- The number of litters depends on the area and varies with nearness to the limit of their climatic range.
- The young may continue to nurse until 4 or 5 weeks old.
Common sign :
- Visual sightings on power lines, trees, bushes, patios, roofs.
- Hollowed citrus and other fruit.
- Rat droppings.
- Noises in the attic and walls.
House mice ( Mus Musculus )
Habitat
- They can live in forests, grasslands and manmade structures easily.
- Mice typically make a burrow underground if they live out in the wild.
- Their burrow helps protect them from predators.
Food Habitat
- they like to eat fruits, seeds and grains.
- they eat both plants and meat, and the common house mice will eat just about anything it can find.
General Biology
- The pups are born blind and without fur or ears.
- The ears are fully developed by the fourth day,fur begins to appear at about six days and the eyes open around 13 days after birth,the pups are weaned at around 21 days.
THE END