Starfish are known to have the ability to regenerate limbs that have been lost over time (Representative)
New Delhi:
Researchers have identified the hormone that causes starfish to shed their limbs to survive predators. The hormone is similar to the hormone that regulates appetite in humans.
The research team from Queen Mary University of London, UK, proposed that when this hormone — 'ArSK/CCK1' — is released in response to stress, it contracts a muscle at the base of the starfish's arm, effectively causing it to break off. They studied a common European starfish, Asterias rubens.
According to the authors, the findings, published in the journal Current Biology, have revealed an important piece of the puzzle regarding the processes underlying autotomy, or the ability of an animal to shed a body part to escape predator attacks.
“Our findings shed light on the complex interplay of neurohormones and tissues involved in starfish autotomy. While we have identified a key player, it is likely that other factors contribute to this extraordinary ability,” said author Ana Tinoco of Queen Mary University of London.
Starfish are known to have the ability to regenerate limbs that have been lost over time. Therefore, understanding the processes associated with this ability could have implications for regenerative medicine and the development of new treatments for limb injuries, the researchers said.
“This research not only reveals a fascinating aspect of starfish biology, but also opens the door to exploring the regenerative potential of other animals, including humans.
“By unlocking the secrets of starfish self-amputation, we hope to advance our understanding of tissue regeneration and develop innovative therapies for limb injuries,” said lead researcher Maurice Elphick, professor of animal physiology and neuroscience at Queen Mary University of London.
Autotomy is a well-known survival strategy among animals. Another example of this is the shedding of the tail of lizards.
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