Source: TOI
Context: A groundbreaking discovery reveals that the comb jelly Mnemiopsis leidyi has the unique ability to reverse its aging process by regressing from an adult stage back to a larval form under stress.
About Comb jellies:
- Classification: Marine invertebrates belonging to the phylum Ctenophora, distinct from jellyfish.
- Physical traits:
- Characterized by rows of cilia (“combs”) for swimming and often exhibit bioluminescence.
- Use sticky cells called colloblasts to capture prey, unlike jellyfish that use stinging cells.
- Unique abilities:
- Mnemiopsis leidyi can reverse aging, regressing from adulthood to a larval stage when under extreme stress.
- Evolutionary significance:
- Among Earth’s oldest animals, existing for approximately 700 million years.
- Shares age-reversal traits with species like the immortal jellyfish (Turritopsis dohrnii), forming a rare group of “time-traveling” organisms.
- Scientific implications:
- Offers insights into aging, rejuvenation, and developmental biology.
- Promises to advance research on molecular mechanisms of reverse development and their potential application in human longevity studies.
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