Hynobius
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Hynobius
''Hynobius'' is a genus of salamander (Asian salamanders) in the family Hynobiidae, occurring in Japan, Korea, China, Taiwan and Far East Russia. It contains these species: Species Species included (as of March 2021): *''Hynobius abei'' Sato, 1934 *''Hynobius abuensis'' Matsui, Okawa, Nishikawa, and Tominaga, 2019 *''Hynobius akiensis'' Matsui, Okawa, and Nishikawa, 2019 *''Hynobius amakusaensis'' Nishikawa and Matsui, 2014 *''Hynobius amjiensis'' Gu, 1992 *''Hynobius arisanensis'' Maki, 1922 *''Hynobius bakan'' Matsui, Okawa, and Nishikawa, 2019 *''Hynobius boulengeri'' (Thompson, 1912) *''Hynobius chinensis'' Günther, 1889 *''Hynobius dunni'' Tago, 1931 *''Hynobius formosanus'' Maki, 1922 *''Hynobius fossigenus'' Okamiya, Sugawara, Nagano, and Poyarkov, 2018 *''Hynobius fucus'' Lai and Lue, 2008 *''Hynobius glacialis'' Lai and Lue, 2008 *''Hynobius geojeensis'' Min and Borzée, 2021 *''Hynobius guabangshanensis'' Shen, 2004 *''Hynobius guttatus'' Tominaga, Matsui, Tanabe, an ...
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Hynobiidae
The Asiatic salamanders (family Hynobiidae) are primitive salamanders found all over Asia, and in European Russia. They are closely related to the giant salamanders (family Cryptobranchidae), with which they form the suborder Cryptobranchoidea. About half of hynobiids currently described are endemic to Japan, but their range also covers parts of China, Russia, Afghanistan and Iran. Hynobiid salamanders practice external fertilization, or spawning. And, unlike other salamander families which reproduce internally, male hynobiids focus on egg sacs rather than females during breeding. The female lays two egg sacs at a time, each containing up to 70 eggs. Parental care is common. A few species have very reduced lungs, or no lungs at all. Larvae can sometimes have reduced external gills if they live in cold and very oxygen-rich water. Fossils of hynobiids are known from the Miocene to the present in Asia and Eastern Europe, though fossils of Cryptobranchoids more closely related to ...
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Hynobius Fucus
''Hynobius fucus'' is an endemic species of Taiwan, which is mainly distributed around the northwest mountain range, approximately an altitude of 1500 meters. It is one of Taiwan’s amphibian most recently discovered amphibians, as well having the lowest altitude habitat of all of Taiwan’s salamanders. Their main feature is that their body is covered in small blue and white dots. The cloaca is 5 cm and body length 8 cm (up to 10 cm). It only has 4 toes in the front and back limbs. Only the Taiwan Hynobius formosanus has the same number of toes as this species. The other types of salamander, including Hynobius arisanensis Maki, Hynobius sonani, and Hynobius glacialis have 5 toes in the hind limbs. This is the one of main methods to differentiate between types of salamander. Currently, the Hynobius fucus is listed as class 1 endangered species. Discovery Hynobius fucus was first discovered in 1993 in the Guanwu mountain area in Tai'an Township, Miaoli County ...
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Hynobius Fossigenus
''Hynobius fossigenus'' is a species of salamander in the family Asiatic salamander, Hynobiidae, and is found in some Prefectures of Japan, prefectures in Kantō region, Kantō and Chūbu region, Chūbu districts in Japan. Like all species in the genus ''Hynobius'', it has lungs, its tail is smaller than its body, and it does not have claws on its fingertips. However, characteristics such as its purplish coloration with golden spots, its size, and its use of River ecosystem, lotic waters to reproduce make this species different from all the others. The individuals breed between December and April in mountain streams surrounded by ''Cryptomeria, Cryptomeria japonica'' evergreen forests. After mating, the females lay their eggs in envelopes, which are thick, transparent, and resistant, where they remain for sixty days, when the embryo fully develops in the egg. After hatching, the tadpoles leave the envelope and start living under rocks or at the bottom of streams, completing their ...
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Hynobius Kimurae
The Hida salamander or Hondo salamander (''Hynobius kimurae'') is a species of salamander in the family Hynobiidae, the Asiatic salamanders. It is endemic to central and western Honshu, Japan. It lives in deciduous, coniferous, and mixed forests, where it breeds in streams. The egg sacs of this species were reported to display blue-to-yellow iridescent glow due to a quasi-periodic diffraction grating In optics, a diffraction grating is an optical grating with a periodic structure that diffraction, diffracts light, or another type of electromagnetic radiation, into several beams traveling in different directions (i.e., different diffractio ... structure embedded within the enveloppes of the egg sacs. These salamanders typically spawn from February to April, leading some to metamorphose in late September while others wait for the following year to do so after winter is over. References Hynobius Endemic amphibians of Japan Amphibians described in 1923 Taxa named by ...
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Hynobius Abuensis
''Hynobius abuensis'', also known as the Abu salamander, is a species of salamander in the family Hynobiidae. It is found in the Shimane and Yamaguchi prefectures of the Chūgoku region in Honshu, Japan. The name "Abu" refers to the region of the Yamaguchi Prefecture in which the species is found. Description It has an olive-colored posterior, and a lighter underbelly. The underbelly is dotted with silvery-white spots. Like all species in the genus ''Hynobius'', ''Hynobius abuensis'' has vomerine teeth, long legs, clawless fingers, and a tail a little shorter than its head and body combined. It is usually around 10 to 12 centimeters from head to tail. It also has lungs, in contrast to its lungless cousins of the genus '' Onychodactylus''. Habitat ''Hynobius abuensis'' is found in temperate forests, near still water bodies such as puddles and marshes. It is mainly found in a small area in southern Japan. Breeding ''Hynobius abuensis'' breeds in still water bodies. Breeding usua ...
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