New research reveals that despite decades of overfishing, shortfin mako sharks in the Atlantic still have relatively high genetic diversity. This means they may have the potential to adapt to environmental changes, but only if overfishing is urgently curtailed.
) are the fastest sharks in the sea, but they’re failing to outpace the very thing driving them toward extinction: overfishing. Global demand for their meat and valuable fins has placed this predator on the. The situation is particularly dire in the Atlantic, where populations are managed as two separate ‘stocks.’ Fishery-based assessments indicate thats.
“Typically, in most of the exploited shark species we study we see pretty low diversity,” says Shivji. “We were rather surprised, but also pleased, to see that the genetic health of shortfin makos does not appear to have been severely compromised—yet—by the population reductions caused by overfishing.
That means that if we can prevent further erosion of this genetic diversity in shortfin mako sharks by urgently curbing overfishing, we have more hope for this species to retain the resilience needed for its populations to adapt to our fast-changing climate and survive.”to adapt—but only if overfishing is halted before their populations are pushed past the point of recovery. This finding is particularly striking when compared to other exploited shark species.
Sharks Overfishing Fisheries Fishing Atlantic Ocean
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