Like a Tree, Growth Rings Show Lobster Age
For the first time, scientists have figured out how to determine the age of a lobster â€” by counting its rings, like a tree. Nobody knows how old lobsters can live to be; some people estimate they live to more than 100. But knowing â€” rather than simply guessing â€” their age and that of other shellfish could help scientists better understand the population and assist regulators of the lucrative industry, said Raouf Kilada, lead author of a scientific paper documenting the process published in the Canadian Journal of Fisheries and Aquatic Sciences.
Before now, scientists deduced a lobsterâ€™s age judging by size and other variables. But itâ€™s now known that lobsters and other crustaceans, such as crabs and shrimp, grow one ring per year in hidden-away internal spots, Kilada said.