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It is also known as the Natal multimammate rat, the common African rat, or the African soft-furred mouse. [1] The Natal multimammate rat is the natural host of the Lassa fever virus . Range
The New World rats and mice are often considered part of a single subfamily, Sigmodontinae, but the recent trend among muroid taxonomists is to recognize three separate subfamilies. This strategy better represents the extreme diversity of species numbers and ecological types.
The multimammate mice (also called multimammate rats, African soft-furred rats, natal-rats or African common rats) are found in most parts of sub-Saharan Africa. Their head-body length is between 10 and 15 cm, their tail length is between 8 and 15 centimetres (3.1 and 5.9 in), and their weight varies between 20 and 80 grams (0.71 and 2.82 oz ...
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The Polynesian rat, Pacific rat or little rat (Rattus exulans), or kiore, is the third most widespread species of rat in the world behind the brown rat and black rat.Contrary to its vernacular name, the Polynesian rat originated in Southeast Asia, and like its relatives has become widespread, migrating to most of Polynesia, including New Zealand, Easter Island, and Hawaii.
Currently, rodents are commonly used in animal testing for physiological, pathological and behavioral scientific studies, particularly mice and rats, but also guinea pigs, hamsters, gerbils and others. Mice are the most commonly used vertebrate species, due to their availability, size, low cost, ease of handling, and fast reproduction rate.
The currently accepted scientific name for the hispid cotton rat is Sigmodon hispidus.It is a member of the family Cricetidae. [5] Although 25 subspecies are accepted, including the type subspecies, [6] the most distinct genetic subdivision within S. hispidus separates the species into two genetic lineages, an eastern one and a western one, which hybridize along a contact zone.