The Chinese white dolphin is a variety of Indo-Pacific humpbacked dolphin (Sousa chinensis; Chinese: 中華白海豚; pinyin: Zhōnghuá bái hǎitún). The Yangtze River dolphin (Lipotes vexillifer), or baiji, are a type of freshwater dolphin thought to be the first dolphin species driven to extinction due to the impact of humans. There are 40 extant species named as dolphins. A total of 43 whistles were recorded over 12 recording sessions. Transactions of South African Journal of Marine Science 21: 89-97. . Māui dolphin are only found off the west coast of New Zealand's North Island, and are now one of the rarest and smallest dolphin subspecies globally. The Yangtze River dolphin or baiji (Lipotes vexillifer) was an obligate river dolphin endemic to the middle-lower Yangtze River [Changjiang] drainage and the neighbouring Qiantang River in eastern China.The baiji experienced a precipitous population decline throughout the late twentieth century: there were thought to be about 400 individuals in the population in 1980 but only 13 were counted . They are very social dolphins, and they live in groups that are called pods. Baiji are pale blue-grey dor­sally and white ven­trally. Occ. Size: 5 feet long to over 30 feet long, depending on the species. Lifespan: Up to 60 years depending . "Baiji" itself means "white fin" in Chinese, and it means "white-finned dolphin". It is pale blue to gray on its dorsal (back) side and white on its ventral (belly) side. The Baiji Dolphin features a streamlined body that makes it easy for them to swim well but not to exert too much energy. Since Baiji means 'white fin' in Chinese, it means 'white-finned . They live in small pods that have from 2 to 10 members. They have 30-36 teeth per side of both the upper and lower jaws. The baijis have greyish bluish-colored skin and a white underbelly. Passenger Pigeon. The Panda won the vote and was added into the game. They have 30 to 36 sharp teeth on their upper and lower jaws. Orca (left) vs Bottlenose dolphin (right) Visual Comparison. In 1990s, the Yangtze River Dolphins disappeared in Donting Lake and Boyang Lake. The baiji has short, round flippers and a low, triangular shaped dorsal (back) fin. Pacific white-sided dolphin Search this Northern right whale dolphin Search this Melon-headed whale Search this Electra Search this Taxonomy: Cetacea--Mysticetes . The baiji (Chinese: 白鱀豚; pinyin: báijìtún, Lipotes vexillifer, Lipotes meaning "left behind", vexillifer "flag bearer") is a possibly extinct species of freshwater dolphin, and is thought to be the first dolphin species driven to extinction due to the impact of humans. The baiji usually surfaced without causing white water and breathed in a smooth manner . Maui's dolphin is the smallest, with a length of 1.7 meters (5 ft 7 inches) and a weight of 50 kg (110 lbs). Propagation from a sound source array in the near field and far field. "White Dolphin Blues" is the story of Rowena Muldoon, a feisty 62-year-old bartender at the White Dolphin, located on quaint Paradise Beach, Delaware. However, several species are in danger of extinction. • Ganges River dolphin: This freshwater dolphin's behavior is similar to the baiji in that it hunts prey by echolocation. Least concern. The five on display are the humpback whale, killer whale, spinner dolphin, Chinese white dolphin and the "functionally extinct" baiji, which lacks sufficient potential breeding pairs to survive. Mothers keep their calves near after giving birth. Least concern. The hourglass dolphin (Lagenorhynchus cruciger) is a small dolphin in the family Delphinidae that inhabits offshore Antarctic and sub-Antarctic waters. The dorsal fin is small and triangular with a wide base and located more than halfway back. They depend largely on underwater sound for communication, feeding and orientation. Kostenlose Lieferung für viele Artikel! Since 1975, the Institute of Hydrobiology of the Chinese Academy of Sciences has . Its name in Chinese Baiji, means "white dolphin" and is known by the nickname of "the goddess of the Yangtsé" regarding the river that it inhabited. Baiji is a Chinese word meaning "a white dolphin." This species is one of the most endangered cetaceans in the world, with a population numbering in the tens or fewer. There are 40 extant species named as dolphins. Baiji, Lipotes vexillifer South Asian river dolphin, Platanista gangetica Amazon river dolphin, Inia geoffrensis; Araguaian river dolphin, Inia araguaiaensis Bolivian river dolphin,Inia boliviensis Tucuxi, Sotalia fluviatilis Size, Appearance, & Behavior. These dolphins consume a wide variety of freshwater fishes. Average dive: 20 seconds (can dive up to 2 minutes) **** For more information: Wuhan Baiji . Ethology 107: 701-716. and other endangered . Nicknamed "Goddess of the Yangtze" (長江女神) in China, the dolphin was also called Chinese River Dolphin, Yangtze River Dolphin, Beiji, Pai-chi (Wade-Giles), Whitefin Dolphin and Yangtze Dolphin. The Baiji is pale blue to gray on the dorsal (back) side, and white on the ventral (belly) side. Sound Pressure Levels and Sound Exposure Levels. The baiji, which resides in the Yangtze River in China, one of the most . Reeves RR, Smith BD, Crespo E, Notarbartolo di Sciara G. Advances in the Study of Behavior 40: 123-156. . The baiji (Chinese: 白鱀豚; pinyin: báijìtún , Lipotes vexillifer, Lipotes meaning "left behind", vexillifer "flag bearer") is a functionally extinct species of freshwater dolphin formerly found only in the Yangtze River in China.Nicknamed "Goddess of the Yangtze" (simplified Chinese: 长江女神; traditional Chinese: 長江女神; pinyin: Cháng Jiāng nǚshén) in China, the dolphin . Information on the reproductive behavior of the Yangtze river dolphin, Lipotes vexillifer, is scarce. The West African Black Rhinoceros was found in several countries towards the southeast region of Africa. Dolphin is the common name of aquatic mammals within the infraorder Cetacea.The term dolphin usually refers to the extant families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the New World river dolphins), Pontoporiidae (the brackish dolphins), and the extinct Lipotidae (baiji or Chinese river dolphin). Author: Liu Renjun Search this Wang Ding Search this Type: Citations Date: 1989 Topic: They have a broad, stocky body with round flippers. The baiji was a relict species and the only contemporary representative of the family Lipotidae . Information on the reproductive behavior of the Yangtze river dolphin, Lipotes vexillifer, is scarce. Pacific white-sided dolphin Search this Northern right whale dolphin Search this Melon-headed whale Search this Electra Search this Taxonomy: Cetacea--Mysticetes . Mating season occurs in spring and autumn and their gestation period lasts between 6-12 months. The behavior and appearance of the woolly mammoth are one of the best-studied of prehistoric animals as the discovery of their frozen carcasses in Alaska and Siberia same as their teeth, skeletons, dung, stomach contents, and depiction from life in prehistoric cave paintings. Distinctive characteristics. name 'Baiji' was translated as 'white flag' and thus this species became known initially as the 'White Flag Dolphin'. It is known that they reach sexual maturity at 3-4 years of age. The Yangtze River dolphin or baiji (Lipotes vexillifer), an obligate river dolphin from the middle- lower Yangtze region of eastern China, is probably the first large mammal species to have . Common Name: Dolphin (Note: This name refers to the group of 44 species classified as Odontoceti; each has its own scientific and common name.) . An anonymous reader writes "For the first time in nearly fifty years another mammal, specifically an aquatic mammal, has gone extinct.In this case, it was the white dolphin, also known as the Baiji, which used to live in the Yangtze River in China. Thewissen This may help them with their orientation and to communicate. Great Auk. Phenotypic Heterogeneity Underpins IGT and Obesity in Isogenic Mouse Populations. Weight: Up to 6 tons. 1. There are believed to be very few baiji left in existence. Female baijis gave birth to a single baby every few years. History. . To study the phenomenon of heterogeneous metabolic adaptation to HFD in mice (Burcelin et al., 2002, Serino et al., 2012), we generated a large population of isogenic C57BL/6J mice fed either chow diet (CHD) or HFD (n = 193) for up to 5 months.HFD-fed mice became divergent from CHD-fed mice for IGT assessed by . Similar synchronization of behavior to the feeding schedule had also been reported by Kritzler [1952] in a pilot whale (Globicephala macrorhyncha) and by Liu et al. The baiji (Chinese: 白鱀豚; pinyin: báijìtún, Lipotes vexillifer, Lipotes meaning "left behind", vexillifer "flag bearer") is a possibly extinct species of freshwater dolphin, and is thought to be the first dolphin species driven to extinction due to the impact of humans. Unlike most dolphins, their eyes are sitting higher on their head and they don't have two stomachs. Baiji pregnancies lasted for 10-11 months. Behavior: Usually found in pairs in larger social units of 10 animals. A live caught female baiji was found to be 24 years old. There are 40 extant species named as dolphins. Mothers keep their calves near after giving birth. Sound courtesy of www.baiji.org. The baiji or Yangtze River dolphin is endemic to the middle and lower reaches of the Yangtze River in China. It has smaller eyes compared to oceanic dolphins. The Baiji Lipotes vexillifer, Lipotes meaning "left behind", vexillifer "flag bearer") was a freshwater dolphin found only in the Yangtze River in China. White-Beaked Dolphin. During development, there were large disagreements between developers over how . Females are slightly larger than males. Found only in the middle and lower reaches of the Yangzi, a habitat 1600 kilometers long, baiji have inspired poets, served as harbingers of rough weather for fishermen, and perplexed or eluded research . This freshwater dolphin is also nicknamed as the Goddess of the Yangtze. They live approximately for 25 years. Behavior Chinese white dolphins dive to the water surface to breathe . The baiji is sometimes called the Yangtze dolphin, the White fin or the White flag. Diet and Behavior . Sometimes called the white dolphin or the Yangtze River dolphin, the scientific name for the baiji is Lipotes vexillifer. Throughout the ages China's poets and scholars have written of the "baiji", or "white dolphin" - the legendary goddess of the Yangzi River. = 0.67). Anyways, orcas can grow to more than 30 ft. and 12,000 lbs, and move in pods to hunt animals like seals, small whales…and great white . 1. There are no Yangtze River Dolphins near Nanjing. During the last century, 92% of Baiji dolphin specimens died due to consequences of human activity. 2 million. Tasmanian Tiger. Here are the top five main differences between the orca and the dolphin: Appearance: Orcas are black and white with a large dorsal fin, whilst dolphins are grey and sleek, with a longer beaked mouth. The average length for a baiji is between 6.5 and 8 feet (2 and 2.4 meters). Vegetation such as herbs, forbs, and grasses comprised most of the ibex's diet, and seasonal migrations between high and low elevations allowed the ibex to utilize high mountain slopes in the summer and more temperate valleys during the winter with thickening fur supplementing warmth during the coldest months. Other common names include: English: Chinese lake dolphin, white fin dolphin, French: Baiji, dauphin fluvia de Chine; Spanish: Baiji, delfín de China. Loosely based on some of the "curmudgeons" the author has observed in his lifetime, "White Dolphin Blues" is filled with a host of wacky and quirky characters, suspense and surprise, and love and . There has been little opportunity to study the baiji's behavior in the wild, particularly over the last decade or two when just finding a few animals has been a . The baiji's demise was rapid and shocking; it went from a healthy population of some 6000 animals to extinct in a few decades, nothing more than a blink of an eye. It was named Ji early in the ancient dictionary, Erh Ya (200 BC), and Baiji by Kong Wuzhong (AD 1044-1101) in his poem about the porpoise. 1. Source levels and phonation intervals of whistles produced by a free-ranging baiji (Chinese river dolphin) were measured in the seminatural reserve of Shishou in Hubei, China. 100,000. Fast Facts: Dolphins. Cylindrical vs. Spherical Spreading. The mean dominant frequency (the frequency at the highest energy) was 5.7 kHz (s.d. Pyrenean Ibex. The body is a bluish gray, fading into white on its stomach. Male baijis was about 6 years old and for females was about 6 years old and for females was 4... 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