| Murine muridae has more than 500 species, is the second largest branch of mammals, whose members are very diverse and can be divided into several subfamilies, most members belong GERBILLINE murinae. In the case of murine black rat norvegicus rattus rattus, Rattus norvegicus rattus norvegicus and mice of the genus Mus mus musculus with humans arrived around the world, is the most successful of the most common mammals, generally regarded as vermin, but also albino varieties are cultivated for pharmaceutical testing. In addition to the proliferation of human kind, the natural distribution of murine be confined to the old continent, many of which are species distribution limitations, there are some species endangered or already extinct. There are two murine distribution center, a distribution center in southern Asia to Oceania area, of which the most abundant species of South Pacific Islands, and another distribution center in Africa, the species is less than the previous area. These two regions have their own species, respectively, are only a handful of mouse mus, etc. There are two regions. In addition to several norvegicus human communication with the outside, the murine only Apodemus apodemus and harvest mouse is micromys two genera found in Europe and northern Asia, proposed norvegicus rattus rattoides and a few other species distributed in other regions outside of Asia, rats other types of families are confined to these two regions, which are only a mouse nest nest rat micromys minutus (figure below) A, located in the vast region of Eurasia, are small and lightweight, is one of the smallest rodents, the tail with winding resistance, you can climb on the grass, also known as the Old World Wo rats, hamsters and New World class corresponds to the real wo mouse. Murine members adapt to different living environment, morphology and habits are more diversified. Typical morphology and murine members habits and Mus musculus similar, but there are also some big differences, such as Australia, the Australian water rat hydromys chrysogaster size larger, weighing up to one kilogram, semi-aquatic, fish and other aquatic animals for food; channeling mouse notomys feet jumping action for Australia, mainly living in the desert, like America's kangaroo rat; agouti acomys Africa, Ryukyu Islands Ryukyu agouti tokudaia and shifted in from the Dormouse subfamily thorn Dormouse (bristle rat) platacanthomys and other body hair became a protective effect of thorns; There are many species adapted to arboreal life. Just murine mouse in a variety of different members of the genus have a genus of aquatic, arboreal and barbed members. Rattus rattus is one of the largest rodent species, a genus is the most confusing, it was considered more than 180 kinds, is the largest genus of mammals, it was some of the members of the merged or removed, leaving only the basic distribution is limited to Southeast Asia and Oceania about 80 species of musk shrew species than insectivore species, but even so, the purpose is still the largest rodent genus. |
Murinae