Steller's sea cow habitat
網頁Humans have exploited and over-exploited the sirenians range-wide and are responsible for the extinction of the Steller's sea cow (Hydrodamalis gigas). While the remaining sirenians (dugong and manatees) are protected range-wide by a variety of laws, humans continue to have a severe impact on them, primarily through habitat destruction. 網頁2024年10月8日 · Steller’s sea cows were first formally described in Western science by naturalist Georg Wilhelm Steller in 1741—less than 30 years before they went extinct. Measuring more than seven meters and weighing approximately 5,000 kilograms, Steller’s sea cows resembled living sirenians such as manatees and dugongs, although they were …
Steller's sea cow habitat
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網頁2024年1月22日 · Steller’s sea cow (Hydrodamalis gigas) is an extinct Sirenia which was found in 1741 around Commander Island right between Russia and Alaska by Georg W Steller. Steller, who was a naturalist, discovered this species when their vessel, Vitus, wrecked on Bering Island. An adult sea cow was approximately 30 ft long and weighed … Steller's sea cow (Hydrodamalis gigas) is an extinct sirenian described by Georg Wilhelm Steller in 1741. At that time, it was found only around the Commander Islands in the Bering Sea between Alaska and Russia; its range extended across the North Pacific during the Pleistocene epoch, and likely … 查看更多內容 Steller's sea cows are reported to have grown to 8 to 9 m (26 to 30 ft) long as adults, much larger than extant sirenians. In 1987, a rather complete skeleton was found on Bering Island measuring 3 m (9.8 ft). In 2024, … 查看更多內容 Phylogeny Steller's sea cow was a member of the genus Hydrodamalis, a group of large sirenians, whose sister taxon was Dusisiren. Like those of Steller's sea cow, the ancestors of Dusisiren lived in tropical mangroves before … 查看更多內容 Extinction Genetic evidence suggests the Steller's sea cows around the Commander Islands were the last of a much more ubiquitous population dispersed across the North Pacific coastal zones. They had the same genetic diversity as … 查看更多內容 Whether Steller's sea cow had any natural predators is unknown. It may have been hunted by killer whales and sharks, though its buoyancy may have made it difficult for killer whales to … 查看更多內容 The range of Steller's sea cow at the time of its discovery was apparently restricted to the shallow seas around the Commander Islands, which include Bering and Copper Islands. The Commander Islands remained uninhabited until 1825, when the 查看更多內容 • Mammals portal • Marine life portal • Holocene extinction • List of extinct animals of North America 查看更多內容 • Steller, Georg W. (2011) [1751]. "The Manatee". In Miller, Walter (ed.). De Bestiis Marinis. Lincoln, Nebraska: University of Nebraska. pp. 13–43. ISBN 978-1-295-08525-5 查看更多內容
網頁By 1768, less than three decades after they were first described, the Steller's sea cow was extinct. The cut marks on this vertebra are a poignant reminder of the sea cow's demise. … 網頁2024年5月27日 · Steller’s Sea Cow, known scientifically as Hydrodamalis gigas, was a large, slow-moving, marine mammal that was hunted to extinction for its hide, meat, and blubber in the 18th century. Much of what is known about Steller’s Sea Cow is from observations made by Georg Wilhelm Steller. Steller's Sea Cows had a total length …
網頁The story of Steller’s Sea Cow is an important one to know. It’s a cautionary tale that everyone should be aware of, to truly appreciate the devastating effe... 網頁大海牛（Steller's Sea Cow），又名巨儒艮或斯特拉海牛，是已滅絕的巨大哺乳動物。它們是海牛目中已知體型最大的物種，比起其近親海牛與儒艮都要來得大，而它們也是生存至近 …
網頁Habitat and Ecology (see Appendix for additional information) When discovered, Steller's Sea Cow inhabited the shallow cold waters around the Commander Islands in the Bering …
網頁The dugongids are marine herbivores feeding almost exclusively on sea grasses (the dugong) and on macroalgae (Steller's sea cow). Steller's sea cows apparently fed on the surface and were not known to dive. Being toothless and the kelp being avascular, the sea cows crushed the kelp fronds between horny, keratinized plates at the front of their ... pete corwin網頁2024年6月28日 · Sea cow range reconstructions were based on: (1) review of existing sea cow records (see Dataset); (2) bioindicators of sea cow habitat (i.e., kelp forests, sea … pete cote springfield vt網頁Abstract and Figures. Steller's sea cow, a giant sirenian discovered in 1741 and extinct by 1768, is one of the few megafaunal mammal species to have died out during the historical … starcraft zerg theme