Octopuses have short lifespans, with some species living only six months and the average living about two to three years. As human demand for octopuses grows, it becomes a problem to meet the demand.
The Earth’s octopuses have been around for at least 330 million years. While they evolved before dinosaurs roamed the planet, their present day descendents don’t live for very long. They generally die soon after mating or laying eggs, with some octopus species living only six months and the average living about two to three years. Some species like the giant Pacific octopus can live up to five years at most.
Erica Durante. There are a few ways to tell how old an organism is–a process called aging. Trees famously have rings that indicate how many years they have been living. Examining teeth and bone structure in mammals also can reveal similar information about age. That process has been a little bit tricky for octopuses. In the new paper, the team looked at their beaks and stylets–internal shells located near their gills.
Erica Durante. “Understanding an octopus’s age helps to keep fisheries sustainable,” study co-author and University of South Australia PhD student Erica Durante said in a statement. “If you know a species’ age, you can estimate how fast they grow and reproduce and how much you can catch to keep a fishery sustainable.” Age data can also tell scientists how long it takes for an animal to mature. This way, octopuses that have not matured enough to breed can be avoided when fishing.
Octopuses Lifespan Breeding Fish Populations Sustainable Demand
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