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This is a list of mammal species recorded in Japan (excluding domesticated and captive populations). Of the 172 [1] species of mammal found—112 native terrestrial mammals (those that are endemic are identified below; this number includes 37 species of bat), 19 introduced species, 40 species of Cetacea, and the dugong—161 are listed for the Japan region on the IUCN Red List of Threatened ...
Habu, four different species of venomous snake that exist in certain islands including Okinawa, the Sakishima Islands and the Tokara Islands, but not on the islands of Honshu, Kyushu, Shikoku, Hokkaido. [1] Mamushi, a species of venomous snake that exists in all areas of Japan except certain islands including Okinawa and Amami Ōshima. [2]
About 130 species of land mammal occur in Japan. The largest of these are the two bears. The Ussuri brown bear (Ursus arctos), the largest land animal in Japan, is found in Hokkaidō, [3] where it plays an important role in the culture of the Ainu people. [4] The Asian black bear (Ursus thibetanus) inhabits mountainous areas in Honshū ...
The list of organisms by chromosome count describes ploidy or numbers of chromosomes in the cells of various plants, animals, protists, and other living organisms.This number, along with the visual appearance of the chromosome, is known as the karyotype, [1] [2] [3] and can be found by looking at the chromosomes through a microscope.
Cetartiodactyla is a large order of hoofed mammals, the even-toed ungulates, and aquatic mammals, cetaceans. Cetacea was found to be nested within "Artiodactlya" and has now been moved into that order, whose name is now Cetartiodactyla. [2] Even-toed ungulates are found nearly world-wide, although no species are native to Australia or Antarctica.
In a study of the cells from sixteen mammalian species, genes employed in DNA repair were found to be up-regulated in the longer-lived species. [144] The cellular level of the DNA repair enzyme poly ADP ribose polymerase was found to correlate with species lifespan in a study of 13 mammalian species. [145]
The cell is the basic structural and functional unit of all forms of life. Every cell consists of cytoplasm enclosed within a membrane; many cells contain organelles, each with a specific function. The term comes from the Latin word cellula meaning 'small room'. Most cells are only visible under a microscope.
All of these facts, the types of plants and animals found on oceanic islands, the large number of endemic species found on oceanic islands, and the relationship of such species to those living on the nearest continents, are most easily explained if the islands were colonized by species from nearby continents that evolved into the endemic ...