| 单词 | ctenophore |
| 例句 | And yet, neuronal-like cells exist in ctenophores, although they have important structural differences and lack the expression of most genes found in modern neurons. Tiny sea creatures reveal the ancient origins of neurons 2023-09-19T04:00:00Z In the new paper, Dr. Caron and his colleagues proposed that the fossils from Utah and China represent ancient ctenophores, or comb jellies, another group of gelatinous animals only distantly related to true jellyfish. 505-Million-Year-Old Jellyfish Fossils May Be the Oldest Ever Found 2023-08-01T04:00:00Z As mentioned earlier, the cnidarians and ctenophores are animal phyla with true radial symmetry. Fundamentals of Biology 2015-01-01T00:00:00Z Also, ctenophores have had half a billion years to undergo their own independent evolution, and they have a variety of features that are unique to their lineage. The Closest Living Relative of the First Animal Has Finally Been Found 2023-05-17T04:00:00Z Venus’s girdle, a species of comb jelly, or ctenophore. See Iridescent Jellyfish and Glowing Wonders of the Sea in World Oceans Day Photos 2021-06-08T04:00:00Z The presence of some of these neuronal genes in the cells of placozoans and their absence in ctenophores raises fresh questions about the evolutionary trajectory of neurons. Tiny sea creatures reveal the ancient origins of neurons 2023-09-19T04:00:00Z Many creatures, such as jellyfish, salps and glittery, orb-shaped animals called ctenophores, are so delicate that they are mushed into a gelatinous goo that researchers on boats pull from the jars by the handful. The Ocean’s Youngest Monsters Are Ready for Glamour Shots 2021-03-30T04:00:00Z Comb jellies aren’t jellyfish, but a separate group called ctenophores which don’t have numerous tentacles or pack a sting. Living Fireworks, These Animals Produce Light Shows with Their Bodies 2018-06-30T04:00:00Z If sponges branched before ctenophores, that would require these exact same four fusion and mixing events to have occurred independently in two lineages, the chance of which is vanishingly small. The Closest Living Relative of the First Animal Has Finally Been Found 2023-05-17T04:00:00Z These parasitic amphipods bore to their host’s stomach, sometimes in large enough numbers that the victim looks more like a strainer than a jellyfish or ctenophore. See Iridescent Jellyfish and Glowing Wonders of the Sea in World Oceans Day Photos 2021-06-08T04:00:00Z The institute’s recordings revealed that they are major predators, consuming nearly two dozen different sea creatures including other gelatinous animals, especially ctenophores or comb jellies, worms and krill. What eats what: a Landlubber’s guide to deep sea dining 2018-01-19T05:00:00Z Try to collect a ctenophore, and it will disintegrate in your hands. What Eats What: A Landlubber’s Guide to Deep Sea Dining 2017-12-19T05:00:00Z This was not the only magical ctenophore the ship's crew captured recently. Some Deep-Sea Ornaments to Brighten a Dark Day [Video] 2017-12-02T05:00:00Z The researchers’ findings therefore provide strong support for the idea that ctenophores branched first. The Closest Living Relative of the First Animal Has Finally Been Found 2023-05-17T04:00:00Z Comb jellies, or ctenophores, are wildly different from humans and, in fact, most other animals. Growing Comb Jellies in the Lab Like Sea-Monkeys 2016-08-11T04:00:00Z One example they recorded dining on a ctenophore was solmissus, also called a dinner plate jelly because it’s the size and shape of one. What eats what: a Landlubber’s guide to deep sea dining 2018-01-19T05:00:00Z MBARI’s recordings revealed that they are major predators, consuming nearly two dozen different sea creatures including other gelatinous animals, especially ctenophores or comb jellies, worms and krill. What Eats What: A Landlubber’s Guide to Deep Sea Dining 2017-12-19T05:00:00Z Overall, the findings show that the earliest ctenophores were tentacle-less, despite DNA analyses that suggested that the opposite was true. Ancient comb jellies had skeletons, but they still lost the arms race 2015-07-10T04:00:00Z But back in 2008, based on early information from the first sponge and ctenophore genomes, Dunn and his colleagues had proposed that comb jellies branched before sponges did. The Closest Living Relative of the First Animal Has Finally Been Found 2023-05-17T04:00:00Z We next investigated the identity of the ctenophore transmitters. The ctenophore genome and the evolutionary origins of neural systems : Nature : Nature Publishing Group 2014-05-20T04:00:00Z They also decoded gene activity of nine additional species of ctenophores — the scientific name for comb jellies. 'Aliens of sea' provide new insight into evolution 2014-05-21T04:00:00Z For that reason, the researchers contend that ctenophores evolved a nervous system independently. Jelly genome mystery 2014-05-20T04:00:00Z Modern comb jellies — called "ctenophores," as per their scientific name — are already pretty weird looking. Ancient comb jellies had skeletons, but they still lost the arms race 2015-07-10T04:00:00Z “They have very strong data to support the early diverging ctenophores.” The Closest Living Relative of the First Animal Has Finally Been Found 2023-05-17T04:00:00Z Extensive parallel evolution of neural organization in ctenophores is the most evident. The ctenophore genome and the evolutionary origins of neural systems : Nature : Nature Publishing Group 2014-05-20T04:00:00Z Mnemiopsis and other ctenophores are the largest organisms to be propelled by cilia. CreatureCast: Moving, Without Feet to Do So 2014-01-23T16:17:47Z Now armed with data showing that ctenophores lack many common genes, some scientists contend that these are the closest living relatives to the first animals. Jelly genome mystery 2014-05-20T04:00:00Z 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 Recent discoveries have shown that ctenophores have no synapses, the tiny connections between neurons. The Closest Living Relative of the First Animal Has Finally Been Found 2023-05-17T04:00:00Z Ctenophorin is uniquely expressed in polarized cells around the mouth of Pleurobrachia and we found its homologues in all ctenophore species we sequenced. The ctenophore genome and the evolutionary origins of neural systems : Nature : Nature Publishing Group 2014-05-20T04:00:00Z Mnemiopsis, a ctenophore that grows to be about the size of a small apple, is pelagic: it spends its whole life swimming in the ocean. CreatureCast: Moving, Without Feet to Do So 2014-01-23T16:17:47Z An understanding of ctenophore biology is critical for reconstructing events that occurred early in animal evolution. [Research Article] The Genome of the Ctenophore Mnemiopsis leidyi and Its Implications for Cell Type Evolution 2013-12-12T19:26:12.817Z Although they are gelatinous like jellyfish, comb jellies form their own phylum, known as ctenophores. Genome Reveals Comb Jellies' Ancient Origin 2013-01-09T15:15:00.317Z Because ctenophores appear to sit at the base of the animal tree of life, the findings suggest that light-generating and sensing proteins evolved at the same time as multicellularity. ScienceShot: Comb Jelly Genome Sheds Light on ... Light 2012-12-21T17:15:00Z Although two distinct nervous systems are well recognized in ctenophores, many bilaterian neuron-specific genes and genes of ‘classical’ neurotransmitter pathways either are absent or, if present, are not expressed in neurons. The ctenophore genome and the evolutionary origins of neural systems : Nature : Nature Publishing Group 2014-05-20T04:00:00Z The ctenophores, also known as comb jellies, are an exception. CreatureCast: Moving, Without Feet to Do So 2014-01-23T16:17:47Z An understanding of ctenophore biology is critical for reconstructing events that occurred early in animal evolution. [Research Article] The Genome of the Ctenophore Mnemiopsis leidyi and Its Implications for Cell Type Evolution 2013-12-12T19:26:12.817Z In the analyses I’ve done, ctenophores are the most problematic taxon. Genome Reveals Comb Jellies' Ancient Origin 2013-01-09T15:15:00.317Z Driesch and Morgan by removing part of the cytoplasm from a fertilized egg of the ctenophore, Beroe, produced imperfect larvae showing certain defects which represent the parts removed. Essays In Pastoral Medicine 2012-03-05T03:00:09.993Z ACh, acetylcholine. c, Key molecular innovations underlying neural organization in ctenophores. The ctenophore genome and the evolutionary origins of neural systems : Nature : Nature Publishing Group 2014-05-20T04:00:00Z My colleagues and I recently published the genome sequence of Mnemiopsis, the first available for a ctenophore. CreatureCast: Moving, Without Feet to Do So 2014-01-23T16:17:47Z The lack of many of these factors in indicates that ctenophore mesodermal cell types are specified differently than in bilaterians, suggesting that they perhaps evolved independently in these two lineages. [Research Article] The Genome of the Ctenophore Mnemiopsis leidyi and Its Implications for Cell Type Evolution 2013-12-12T19:26:12.817Z “Now we need to imagine early life as a sponge, ctenophore and everything in between.” Genome Reveals Comb Jellies' Ancient Origin 2013-01-09T15:15:00.317Z Bootstrap support values are listed at each node. d, Analysis with improved ctenophore taxon sampling based on 114 genes. The ctenophore genome and the evolutionary origins of neural systems : Nature : Nature Publishing Group 2014-05-20T04:00:00Z In this case, ctenophores and their genomes present matchless examples of ‘experiments’ in nature and the possible preservation of ancient molecular toolkits lost in other animal lineages. The ctenophore genome and the evolutionary origins of neural systems : Nature : Nature Publishing Group 2014-05-20T04:00:00Z This is consistent with our previous analyses that place ctenophores as our most distant animal relatives. CreatureCast: Moving, Without Feet to Do So 2014-01-23T16:17:47Z Our phylogenetic analyses suggest that ctenophores are the sister group to the rest of the extant animals. [Research Article] The Genome of the Ctenophore Mnemiopsis leidyi and Its Implications for Cell Type Evolution 2013-12-12T19:26:12.817Z Figure 5c summarizes key molecular innovations underlying neural organization in ctenophores. The ctenophore genome and the evolutionary origins of neural systems : Nature : Nature Publishing Group 2014-05-20T04:00:00Z This hypothesis is supported by comparative analysis of multiple gene families, including the apparent absence of HOX genes, canonical microRNA machinery, and reduced immune complement in ctenophores. The ctenophore genome and the evolutionary origins of neural systems : Nature : Nature Publishing Group 2014-05-20T04:00:00Z Ctenophorin is uniquely expressed in polarized cells around the mouth of Pleurobrachia and we found its homologues in all ctenophore species we sequenced. The ctenophore genome and the evolutionary origins of neural systems : Nature : Nature Publishing Group 2014-05-20T04:00:00Z Our metabolomic and physiological data are consistent with the hypothesis that ctenophore neural systems, and possibly muscle specification, evolved independently from those in other animals. The ctenophore genome and the evolutionary origins of neural systems : Nature : Nature Publishing Group 2014-05-20T04:00:00Z ACh, acetylcholine. c, Key molecular innovations underlying neural organization in ctenophores. The ctenophore genome and the evolutionary origins of neural systems : Nature : Nature Publishing Group 2014-05-20T04:00:00Z This hypothesis implies that ctenophores, despite being active predators, underwent massive loss of neuronal and signalling toolkits and then replaced them with novel neurogenic and signalling molecules and receptors. The ctenophore genome and the evolutionary origins of neural systems : Nature : Nature Publishing Group 2014-05-20T04:00:00Z Bootstrap support values are listed at each node. d, Analysis with improved ctenophore taxon sampling based on 114 genes. The ctenophore genome and the evolutionary origins of neural systems : Nature : Nature Publishing Group 2014-05-20T04:00:00Z |
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