LSS gear unit sizes to Technical specifications B2-VV5-B Bevel-helical gear reducer B2

Flender/Flender Gear Units/Bevel-helical gear reducer B2

ly Muridae. Among commen- sal rats three important rats are Mus musculus the house mouse; Rattus norvegicus the Norway rat, sewer rat, or Brown rat; and . rattus the black or granary rat. Some eld rats invade rural and urban grain storages and also cause damage to stored grains, andthey are of local importance. These include Arvicanthis nitoticus andPraomys natalensis in sub-Saharan Africa; Oryzomys spp. the rice rats in South and Central America; Bandi- cota bengalensis ; Indian mole rat in India, and . exulans , the Polynesian rat in Asia. Voles, group of rodents belonging to the family Cricetidae also cause damage to storedgrain in rural areas. The other rodents that feed on stored grains are the ground and treesquirrels (..; Citellus spp., Tamias spp., Xerus spp., Funiscurus spp., and Halosciurus spp.) belonging to the family Sciuridae (. The biology, habits, and habitats of commen- sal rats have been extensively studied (. Rats and mice live for less than 2 years on an average and they live in colonies. They are nocturnal showing peak activity shortlyafter dusk. However, when hungry they also move around in search of food during other times. They follow regular paths called runways along walls or other objects that presents vertical plane. They nest in safe spot where the supply of food and water is assured.While feeding on dry grains rats drink water at about 1 mL/day, whereas the require- ment of water for mice is much less, 1 mL/day. Nearly 7 fecal pellets are dropped daily, and about 4-mL urine excreted and hundreds of hairs are shed by rats. Rats can live without food for 3 days and resist thirst up to 4 . An adult mouse eats about3 of food per day, but discards partially eaten food causing spillage and signicantquantity of contaminated grain. In bag-stacks heavy mice infestation may lead to collapseof the stacks. Rats are highly adaptable to any environment and have high fecundityrate. Surveillance for the presence of rats and mice in the storag