- Arbornautics (5/7/2018)- Traditional news stories usually cover a single subject or the straightforward relationship between two subjects. However, every once in awhile, a story comes along that crams a deceptive number of subjects and interesting relationships into a tiny space. Exploring stories like that can be an adventure. Here’s a wonderful, five minute clip from Seeker that’s … Continue reading Arbornautics
These are organized by a classification scheme developed exclusively for Cosma. More…
tardigrade : any of a phylum (Tardigrada) of microscopic invertebrates with four pairs of stout legs that live usually in water or damp moss — called also water bear — Webster
Tardigrade Tardigrades, also known colloquially as water bears, or moss piglets), are water-dwelling, eight-legged, segmented micro-animals. They were first discovered by the German zoologist Johann August Ephraim Goeze in 1773. The name Tardigrada (meaning “slow stepper”) was given three years later by the Italian biologist Lazzaro Spallanzani. They have been found everywhere: from mountain tops to the deep sea and mud volcanoes; from tropical rain forests to the Antarctic.
Tardigrades are one of the most resilient known animals, with individual species able to survive extreme conditions that would be rapidly fatal to nearly all other known life forms, such as exposure to extreme temperatures, extreme pressures (both high and low), air deprivation, radiation, dehydration, and starvation. About 1,150 known species form the phylum Tardigrada, a part of the superphylum Ecdysozoa. The group includes fossils dating from 530 million years ago, in the Cambrian period.
Usually, tardigrades are about 0.5 mm (0.02 in) long when they are fully grown. They are short and plump, with four pairs of legs, each with four to eight claws also known as “disks”. Tardigrades are prevalent in mosses and lichens and feed on plant cells, algae, and small invertebrates. When collected, they may be viewed under a very low-power microscope, making them accessible to students and amateur scientists. — Wikipedia
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Water bear. Moss piglet. Tardigrad […]
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229 new species described by the California...
on December 5, 2018 at 6:24 pm
In 2018, researchers at the California Academy of Sciences added 229 new plant and animal species to our family tree, enriching our understanding of Earth's complex web of life and strengthening our ability to make informed conservation decisions. The new species include 120 wasps, 34 sea slugs, 28 ants, 19 fish, seven flowering plants, seven spiders, four eels, three sharks, two water bears, one frog, one snake, one seahorse, one moss, and one liverwort plant. More than a dozen Academy […]
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Video: What makes tardigrades such great survivors
on October 11, 2018 at 6:01 pm
Tardigrades are tiny animals that can live in water droplets just about anywhere. When those water droplets dry out, tardigrades undergo an astonishing transformation to survive the lack of water. […]