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Tiny Crustaceans' Show Fastest Repeatable Movements Ever Seen in Marine Animals | |
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2021-02-25 | |
发布年 | 2021 |
语种 | 英语 |
国家 | 美国 |
领域 | 气候变化 |
正文(英文) | A group of crustaceans called amphipods can accelerate as fast as a bullet -- literally, according to a new study by biologists at the University of Alberta and Duke University. This study shows that a tiny and unusual species is responsible for making the fastest repeatable movements yet known for any animal in water. "The high speeds of these repeatable movements reach nearly 30 metres per second or more than 100 kilometres per hour," explained Richard Palmer, professor emeritus in the Department of Biological Sciences and co-author on the study. "They have the highest accelerations of any animal in water, reaching more than 0.5 million metres per second squared, which is close to the acceleration of a bullet." A high-speed video camera captures footage of an amphipod's claw snapping at 300,000 frames per second. Amphipods are a type of crustacean related to marine beach hoppers and freshwater scuds. Male amphipods use their large claws to make ultra-fast, repeatable snapping motions. The snaps make a popping sound and create rapid water jets that may be used to defend their territory. "Each new discovery of extreme movements in a novel group of organisms raises fascinating questions about how such extreme adaptations are achieved in terms of biomechanics and functional behaviour, and how they evolved from more common, slower-moving relatives," said Palmer. Though faster movements have been seen in other creatures, these movements only happen once and cannot be repeated. As Palmer noted, the mechanism that allows amphipods to create such high-speed movements repeatedly could inspire human engineering efforts. "This may suggest novel engineering solutions to design and build small structures that can move extremely fast over and over." Video: https://www.youtube.com/watch?v=8UGg4ohbOZA&feature=emb_logo
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Story Source: Materials provided by University of Alberta. Original written by Katie Willis. Note: Content may be edited for style and length. Journal Reference:
Cite This Page: University of Alberta. "Tiny crustaceans' show fastest repeatable movements ever seen in marine animals." ScienceDaily. ScienceDaily, 25 February 2021.
University of Alberta. (2021, February 25). Tiny crustaceans' show fastest repeatable movements ever seen in marine animals. ScienceDaily. Retrieved February 28, 2021 from www.sciencedaily.com/releases/2021/02/210225143835.htm
University of Alberta. "Tiny crustaceans' show fastest repeatable movements ever seen in marine animals." ScienceDaily. www.sciencedaily.com/releases/2021/02/210225143835.htm (accessed February 28, 2021).
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URL | 查看原文 |
来源平台 | Science Daily |
文献类型 | 新闻 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/316141 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | admin. Tiny Crustaceans' Show Fastest Repeatable Movements Ever Seen in Marine Animals. 2021. |
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