| 单词 | rotifer |
| 例句 | Oliver predicted their “imminent” extinction, at least in geological time, since “only bdelloid rotifers survived tens of million of years living the sexless life.” A Year Without Oliver Sacks 2016-08-18T04:00:00Z Scale this up to all of the ocean and fresh bodies of water where both microplastics and rotifers are present, and the number of nanoplastic particles created every day is mind boggling. Zooplankton in ocean and freshwater are rapidly escalating the global environmental threat of plastics 2023-11-09T05:00:00Z The researchers provide examples of using the protocol to test, for example, MNP toxicity in marine rotifers, freshwater mussels, daphnids and earthworms. Ecotoxicity testing of micro- and nano-plastics 2023-10-10T04:00:00Z The bottom level of the illustration shows primary producers, which include diatoms, green algae, blue-green algae, flagellates, and rotifers. Fundamentals of Biology 2015-01-01T00:00:00Z Chordates are more closely related to echinoderms than to rotifers according to the figure. Concepts of Biology 2013-04-25T00:00:00Z Parthenogenesis occurs in invertebrates such as water flees, rotifers, aphids, stick insects, some ants, wasps, and bees. Biology for AP Courses 2022-06-09T00:00:00Z "We show for the first time the ubiquitous fragmentation of microplastics by rotifers," says Jian Zhao, professor of environmental science and engineering at the Ocean University of China and the paper's lead author. Zooplankton in ocean and freshwater are rapidly escalating the global environmental threat of plastics 2023-11-09T05:00:00Z Nematodes, copepods, rotifers and tardigrades also dig up and down, creating spaces for water to mix underground. To Revive a River, Restore Its Hidden Gut 2022-04-01T04:00:00Z About 2,200 species of rotifers have been identified. Fundamentals of Biology 2015-01-01T00:00:00Z Parthenogenesis occurs in invertebrates such as water fleas, rotifers, aphids, stick insects, and ants, wasps, and bees. Concepts of Biology 2013-04-25T00:00:00Z Zooplankton, such as rotifers and small crustaceans, consume these phytoplankton. Biology for AP Courses 2022-06-09T00:00:00Z In China's Poyang Lake, the country's largest freshwater lake, the researchers calculated that rotifers were creating 13.3 quadrillion particles every single day. Zooplankton in ocean and freshwater are rapidly escalating the global environmental threat of plastics 2023-11-09T05:00:00Z But even that near-suspension of animation would have nothing on a rotifer: one of these microscopic animals, pulled out of Siberian permafrost, spent the past 25,000 years in a frozen nap before being reanimated. The Best Fun Science Stories of 2021: Rhythmic Lemurs, a Marscopter, and Sex-Obsessed Insect Zombies 2021-12-27T05:00:00Z Scanning electron micrograph A shows rotifers from the class Bdelloidea, which have a long, tube-shaped body with a fringe surrounding the mouth. Fundamentals of Biology 2015-01-01T00:00:00Z Bdelloid rotifers are a class of rotifer found in freshwater environments around the world. Bdelloid rotifer survives 24,000 years frozen in Siberia 2021-06-07T04:00:00Z The use of rotifers is a new attempt to get “good bacteria” to corals in distress. Will Probiotics Save Corals or Harm Them? 2021-05-27T04:00:00Z "Whereas Antarctic krill live in a place that is essentially unpopulated," says Xing, "we chose rotifers in part because they occur throughout the world's temperate and tropical zones, where people live." Zooplankton in ocean and freshwater are rapidly escalating the global environmental threat of plastics 2023-11-09T05:00:00Z The instigator is a microscopic fungus, and its target is rotifers, tiny common aquatic animals that also thrive in wastewater sludge. This complex microbial warfare is taking place in a single drop of water 2021-02-25T05:00:00Z Watch the video below to see rotifers feeding. Fundamentals of Biology 2015-01-01T00:00:00Z Marine Biological Laboratory scientists, for instance, are raising frilled salamanders that don’t scar, lampreys that regenerate their spines and microscopic animals, called rotifers, that steal genes from plants. Inside the grand and sometimes slimy plan to turn octopuses into lab animals 2019-03-01T05:00:00Z And the abundant bacteria in the lake could potentially support microscopic animals such as worms, rotifers or tardigrades. The hunt for life below Antarctic ice 2018-12-11T05:00:00Z They are abundant -- one of the lakes other researchers reported had approximately 23,000 individual rotifers in every liter of water. Zooplankton in ocean and freshwater are rapidly escalating the global environmental threat of plastics 2023-11-09T05:00:00Z Prepped for the rotifer ambush, this sticky concoction prevents the rotifer’s escape. This complex microbial warfare is taking place in a single drop of water 2021-02-25T05:00:00Z The rotifers are filter feeders that will eat dead material, algae, and other microscopic living organisms, and are therefore very important components of aquatic food webs. Fundamentals of Biology 2015-01-01T00:00:00Z For instance: There’s a peculiar group of tiny animals known as rotifers, once studied only by invertebrate zoologists but now notable throughout molecular biology for their “massive” uploads of alien genes. The Scientist Who Scrambled Darwin’s Tree of Life 2018-08-13T04:00:00Z They have since observed co-evolution of three species at once—algae, rotifers and a virus—and found that the rotifers slowed the rate at which the algae and virus co-evolved. How Warp-Speed Evolution Is Transforming Ecology 2018-02-01T05:00:00Z The algal population remained elevated for longer, and the rotifers’ own boom was abnormally delayed because the new algae were more resistant to predation. How warp-speed evolution is transforming ecology 2018-01-30T05:00:00Z The threads feast on the fat droplets released, then withdraw, leaving just a shell and bacteria in the depleted rotifer body. This complex microbial warfare is taking place in a single drop of water 2021-02-25T05:00:00Z The bottom level of the illustration shows primary producers, which include diatoms, green algae, blue-green algae, flagellates, and rotifers. Fundamentals of Biology 2015-01-01T00:00:00Z At least a few of those genes were still functional, producing enzymes or other products useful to the rotifer. The Scientist Who Scrambled Darwin’s Tree of Life 2018-08-13T04:00:00Z A key study published in 2003 focused on algae and rotifers, microscopic predators that feed on algae; both species can tick through up to 20 generations in the course of a couple of weeks. How Warp-Speed Evolution Is Transforming Ecology 2018-02-01T05:00:00Z A key study2 published in 2003 focused on algae and rotifers, microscopic predators that feed on algae; both species can tick through up to 20 generations in the course of a couple of weeks. How warp-speed evolution is transforming ecology 2018-01-30T05:00:00Z The scientists counted up to 50 dead rotifers dangling from a single fungus. This complex microbial warfare is taking place in a single drop of water 2021-02-25T05:00:00Z Sometimes they gobble up entire rotifers or even other tardigrades. Are Tardigrades Really That Tough? 2017-07-23T04:00:00Z Despite the absence of sexual recombination, which shuffles the genetic deck in a population and offers new combinations of genes, these rotifers have managed to find newness by other means. The Scientist Who Scrambled Darwin’s Tree of Life 2018-08-13T04:00:00Z Leeuwenhoek was the first to document this process after observing what were likely cryptobiotic rotifers. Button Salesman Discovers Most of Life on Earth: True Story 2016-08-02T04:00:00Z The algal population grows; the rotifers then gobble them up and their own population explodes. How warp-speed evolution is transforming ecology 2018-01-30T05:00:00Z These flow into an adjoining chamber, Clarkson explains, where they eat microorganisms called rotifers, also raised on site. How to Grow a Jellyfish 2015-11-18T05:00:00Z And despite their "squishiness," almost all ctenophores are predators that eat small crustaceans, larvae, and rotifers. Ancient comb jellies had skeletons, but they still lost the arms race 2015-07-10T04:00:00Z Three researchers at Harvard and Woods Hole sequenced portions of the genome of a certain rotifer and found all sorts of craziness that shouldn’t have been there. The Scientist Who Scrambled Darwin’s Tree of Life 2018-08-13T04:00:00Z Biologists hope to boost reproduction by adding microscopic creatures known as rotifers and ostracods to their menus. A man-made attempt to save the rarest fish on Earth 2014-10-04T04:00:00Z Among the most important were a tiny animal called a rotifer and several species of the single-celled protist Paramecium, although nearly every microbe they tested demonstrated fairly substantial spore-eating powers. Frog-Killing Fungus Meets Its Match in Hidden World of Tiny Predators 2014-04-28T21:24:46Z These tardigrades feed on plants and small animals like rotifers, nematodes or even other tardigrades by piercing them with a needle-like stylet and and drinking the contents. Wonderful Things: The Universe Between the Sand Grains 2013-09-16T13:16:25.110Z This is consistent with the recent report of an effective antioxidant protection system in bdelloid rotifers. Genomic evidence for ameiotic evolution in the bdelloid rotifer Adineta vaga 2013-08-21T17:50:58.107Z It eats everything from bacteria to small flagellates and large ciliates… to nematodes and rotifers. Gluttonous ciliate postscript: even large predators fall prey to amoebae 2013-04-14T11:45:00.360Z It’s a rotifer, and its stock in trade is sucking tiny prey to their doom. The Startling Mechanical Beauty of a Rotifer in Motion 2013-01-26T01:15:00.190Z Here’s a short video of a rotifer that appears to be related to the one in the study. Frog-Killing Fungus Meets Its Match in Hidden World of Tiny Predators 2014-04-28T21:24:46Z In Mother Nature's edition of the TV reality show Survivor, the bdelloid rotifers would probably be the last animals standing. Bdelloids Surviving on Borrowed DNA 2012-11-15T22:40:04Z The high number of horizontally acquired genes, including some seemingly recent ones, suggests that HGTs may also be occurring from rotifer to rotifer. Genomic evidence for ameiotic evolution in the bdelloid rotifer Adineta vaga 2013-08-21T17:50:58.107Z But a chance investigation of microRNAs in microscopic creatures called rotifers led him to examine these regulatory molecules in everything from insects to sea urchins. Phylogeny: Rewriting evolution 2012-06-27T17:50:32.213Z Though it’s not obvious in this movie, one other aspect of rotifer anatomy is worth mentioning. The Startling Mechanical Beauty of a Rotifer in Motion 2013-01-26T01:15:00.190Z To test the abilities of individual species of rotifer and Paramecium to dispatch swimming Bd spores, the team housed them with tadpoles and Bd spores. Frog-Killing Fungus Meets Its Match in Hidden World of Tiny Predators 2014-04-28T21:24:46Z You will find other rotifers in the Cochituate, some formed like vases, others with long spires, but all graceful and beautiful. Through a Microscope Something of the Science Together with many Curious Observations Indoor and Out and Directions for a Home-made Microscope. 2011-12-29T03:00:20.733Z Towards the end of this month rotifers abounded, and polyps were plentiful. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z I have watched a larva building its shelter near a number of rotifers, some of which it devoured and some of which it plastered on to its tunnel. Freshwater Sponges, Hydroids & Polyzoa 2011-06-25T02:00:17.833Z This corona earned rotifers their name; the term means something like “wheel-bearer”. The Startling Mechanical Beauty of a Rotifer in Motion 2013-01-26T01:15:00.190Z The presence of rotifers resulted in not a single tadpole being infected with Bd, while tadpoles with a roommate were much less likely to get infected with Bd than a control. Frog-Killing Fungus Meets Its Match in Hidden World of Tiny Predators 2014-04-28T21:24:46Z You will see many forms that are strange to you, and we will suppose that the first is that of one of the rotifers. Through a Microscope Something of the Science Together with many Curious Observations Indoor and Out and Directions for a Home-made Microscope. 2011-12-29T03:00:20.733Z Among the rotifers was one about a two-hundredth of an inch long, protected by a carapace, and having a tail terminating in a single style, hence called "Monostyle." Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z He spent long hours, almost without moving, watching the rotifers. The Rotifers 2011-04-18T02:00:10.237Z So it is no surprise that it also works for a group of small creatures known as rotifers. Extending lifespan: Thanks, Mum! 2010-09-30T10:54:00Z There's one tentacled thing that reminds me of a frightened rotifer. Competition Through this opening the water passes, the rotifer gathers his food from the current, and the food passes into the mastax, where it is ground by the masticating apparatus, which is easily seen in motion. Through a Microscope Something of the Science Together with many Curious Observations Indoor and Out and Directions for a Home-made Microscope. 2011-12-29T03:00:20.733Z There were also some eggs of rotifers attached to the water plants, in which motion could be descried at intervals, and a little red eye observed. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z Your rotifers won't die if you leave them alone for a while. The Rotifers 2011-04-18T02:00:10.237Z What makes this news is that the offspring of the rotifers in question also lived longer than normal. Extending lifespan: Thanks, Mum! 2010-09-30T10:54:00Z This rotifer goes through another performance which I also believe to be simply a pastime. The Dawn of Reason or, Mental Traits in the Lower Animals This large rotifer is plainly visible to the naked eye, and you will find it in both shallow and deep ponds, wherever water plants grow, during the months of July and August. Through a Microscope Something of the Science Together with many Curious Observations Indoor and Out and Directions for a Home-made Microscope. 2011-12-29T03:00:20.733Z As usual the Kentish Town ponds were productive of objects, and among them were several rotifers not found in the previous months. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z "He was eating the rotifers and their eggs," said Harry, with what seemed to be a touch of remembered anger at the beetle. The Rotifers 2011-04-18T02:00:10.237Z A parthenogenetic population is, by definition, all female and the result, give or take the odd mutation, is that a rotifer’s daughters are genetically identical to her. Extending lifespan: Thanks, Mum! 2010-09-30T10:54:00Z One of the rotifers frequently acts as if engaged in play. The Dawn of Reason or, Mental Traits in the Lower Animals Professor Wilder and his wife are doing rotifers. Priscilla's Spies Another strange rotifer, of whose name I am uncertain, had an ovalish oblong body, and a pair of legs like compasses, twice as long as himself. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z Mr. Chatham turned through the book; he read, with aching eyes, all that it said about rotifers. The Rotifers 2011-04-18T02:00:10.237Z That makes rotifers convenient subjects for studies of the controversial idea that characteristics acquired during an individual’s life can be passed down the generations in ways that are independent of mutations in the DNA. Extending lifespan: Thanks, Mum! 2010-09-30T10:54:00Z On several occasions I have observed them perform a kind of dance, a pas seul, for each rotifer would be alone by itself. The Dawn of Reason or, Mental Traits in the Lower Animals She wouldn't have the intelligence to invent a professor who collected rotifers. Priscilla's Spies In the common rotifer these organs are situated on the proboscis, while those of the Philodina are lower, and said to be "cervical." Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z A dream, a shadow—the shadow of the alien dream of things hidden in smallness, the dark dream of the rotifers. The Rotifers 2011-04-18T02:00:10.237Z The intriguing result came when they did the same thing with the rotifers’ offspring. Extending lifespan: Thanks, Mum! 2010-09-30T10:54:00Z Many free-swimming rotifers practise letisimulation when disturbed or when threatened by what they consider impending danger. The Dawn of Reason or, Mental Traits in the Lower Animals I don't suppose she ever heard of rotifers. Priscilla's Spies The changes of form in this rotifer are still more remarkable than in the common wheel-bearer. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z He would lower the paper every now and then to watch Harry, in his corner of the living-room, bowed obliviously over the microscope and the secret life of the rotifers. The Rotifers 2011-04-18T02:00:10.237Z Even in the market-place you could have heard them talking about rotifers and tardigrades. The Man With The Broken Ear Deity in its entirety actuates the planet and the rotifer, 671-m. Morals and Dogma of the Ancient and Accepted Scottish Rite of Freemasonry The life cycles, accurately known, of monads repeat themselves as accurately as those of rotifers or planarians. Scientific American Supplement, No. 643, April 28, 1888 When it pleases it can elongate the body, till it becomes vermiform, and it walks like the common rotifer, by curving its back, and bringing its nose and its tail in contact with the ground. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z Its normal form is rigidly adhered to as that of a rotifer or a crustacean. Scientific American Supplement, No. 470, January 3, 1885 One dries up a rotifer: good night to him; somebody soaks him a little, and he wakes up to bid you good day. The Man With The Broken Ear In 1707, Spallanzani found it possible, eleven times in succession, to suspend the life of rotifers submitted to desiccation, and to call it back again by moistening this organic dust with water. Scientific American Supplement, No. 497, July 11, 1885 Rich earth abounds with single cell organisms like bacteria, actinomycetes, fungi, protozoa, and rotifers. Organic Gardener's Composting These worms will repay observation, but in these pages we eschew all their tribe—unless the rotifers be assigned to them—and take ourselves once more to our especial subjects. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z Small beetles, water-spiders, larvæ of gnats, and other insects, rotifers, including the tubicolar sorts, and several varieties of infusoria may be expected and generally found. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z Clementine now sought the company of Doctor Martout, she held discussions with him and wanted to see experiments in the resuscitation of rotifers. The Man With The Broken Ear Another inmate of the same water was a lively long-tailed rotifer, with a small oval body, a tuft of vibrating cilia and a curved bristle visible among them on one side. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z Returning home, a few leaves were placed in the live-box, and on examination with the power of sixty diameters they disclosed a specimen of, perhaps, the most beautiful of all the rotifers, the Stephanoceros Eichornii. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z At any rate the integument was much firmer than in many of the rotifers, and gave an efficient support to the spines which a mere skin could not do. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z One day turning over the Anacharis in search of subjects, a small brown tube was noticed, from which a glassy rod protruded like the feeler of a rotifer. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z Seldom had my experiments on rotifers and tardigrades been surrounded with equal chances of success, yet they had always succeeded. The Man With The Broken Ear Twice I had an opportunity of observing an action I cannot explain, except by supposing either that the tentacles of the Plumatella have some poisonous action, or that rotifers are susceptible of fear. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z On these occasions the common rotifer was the subject of the experiment. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z This tail may be observed to indicate a variety of emotions, if we can ascribe such feelings to a rotifer, and it answers many purposes. Marvels of Pond-life A Year's Microscopic Recreations 2011-08-01T02:00:12.067Z |
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