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Comb Jelly

All articles tagged with #comb jelly

Sea Jelly Rewinds to Larval Stage to Survive Stress
science1 month ago

Sea Jelly Rewinds to Larval Stage to Survive Stress

Researchers found the warty comb jelly Mnemiopsis leidyi can actively revert from adulthood to a larval form when faced with extreme stress like starvation or trauma. In experiments with 65 adults, 13 fully reversed to larval form after 15 days of limited feeding; another subset with surgically removed adult lobes reversed even faster. The study, published in PNAS, notes the mechanism is unknown and raises questions about whether other species have similar de-aging capabilities, suggesting a new area for understanding animal aging and survival strategies.

via Indian Defence Review|
#comb-jelly#de-aging#mnemiopsis-leidyi
Scientists Uncover Jellyfish That Reverses Aging
science1 year ago

Scientists Uncover Jellyfish That Reverses Aging

Scientists have discovered that the comb jelly, Mnemiopsis leidyi, can reverse its aging process, reverting from an adult to a larval stage under extreme stress. This finding, published in the Proceedings of the National Academy of Sciences, challenges current understanding of animal development and suggests that life cycle plasticity might be more widespread than previously thought. The discovery opens new avenues for research into the molecular mechanisms of reverse development and its implications for aging and biology.

via Gizmodo|
#comb-jelly#developmental-biology#life-cycle-plasticity
science3 years ago

Discovery of the First Branch on the Tree of Life.

Scientists have used chromosomal analysis techniques to determine that the comb jelly was the first animal to branch off from the common ancestor of all animals on Earth, rather than the sea sponge. By comparing the placements of certain groups of genes in sponges and comb jellies to their closest single-cell non-animal relatives, researchers found that the comb jelly had the least reshuffling of genes on chromosomes, indicating that it split off from the original genome first. This discovery sheds light on the history of animal evolution and the mechanisms powering it.

via msnNOW|
#animal-evolution#chromosomal-analysis#comb-jelly
science3 years ago

Discovery of the First Branch on the Tree of Life.

Scientists have used chromosomal analysis techniques to determine that the comb jelly was the first animal to branch off from our common ancestor. This discovery sheds light on the history of animal evolution and the mechanisms behind it. The technique involved comparing the placements of certain groups of genes in sponges and comb jellies to their closest single-cell non-animal relatives, with the least reshuffling of genes indicating the first to evolve. The comb jelly's genetic isolation makes it the sister to all other animals and the most genetically distinct.

via msnNOW|
#animal-kingdom#chromosomal-analysis#comb-jelly
Comb Jelly: Earth's Oldest Animal Group?
science3 years ago

Comb Jelly: Earth's Oldest Animal Group?

A new study published in Nature suggests that the first animal to have roamed the Earth about 700 million years ago was likely a comb jelly, or ctenophore. Scientists determined this by looking at the organization of genes in the chromosomes of the organisms. The chromosomes of the ctenophore look very different than the chromosomes of sponges, jellyfish and other invertebrates, alerting researchers that the ctenophore could have either come much earlier than the others, or much later. This new insight is valuable to learning about the basic functions of all animals and humans today, such as how we eat, move and sense our surrounding environment.

via CBS News|
#chromosomes#comb-jelly#ctenophore
"Comb Jelly: Earth's Oldest Animal?"
science3 years ago

"Comb Jelly: Earth's Oldest Animal?"

Scientists believe that the first animal to have roamed the Earth about 700 million years ago was likely a comb jelly, or ctenophore, according to a new study published in Nature. Researchers determined this by looking at the organization of genes in the chromosomes of the organisms. The chromosomes of the ctenophore look very different than the chromosomes of sponges, jellyfish and other invertebrates, alerting researchers that the ctenophore could have either come much earlier than the others, or much later. This new insight is valuable to learning about the basic functions of all animals and humans today, such as how we eat, move and sense our surrounding environment.

via Yahoo News|
#chromosomes#comb-jelly#evolution
"Comb Jelly: Earth's Oldest Known Animal?"
science3 years ago

"Comb Jelly: Earth's Oldest Known Animal?"

Scientists believe that the first animal to have roamed the Earth about 700 million years ago was likely a comb jelly, or ctenophore, according to a new study published in Nature. Researchers determined this by looking at the organization of genes in the chromosomes of the organisms. The chromosomes of the ctenophore look very different than the chromosomes of sponges, jellyfish and other invertebrates, alerting researchers that the ctenophore could have either come much earlier than the others, or much later. This new insight is valuable to learning about the basic functions of all animals and humans today, such as how we eat, move and sense our surrounding environment.

via Yahoo! Voices|
#chromosomes#comb-jelly#evolution