25 May 2012:
Marine Reserves Replenish
Commercial Fisheries, DNA Tests Show
DNA testing has shown that the creation of marine reserves where no fishing is allowed helps to replenish fish stocks outside the reserve boundaries
. In a study conducted at Australia’s Great Barrier
Reef, researchers collected tissue samples from two species of commercially popular fish — including 466 samples of adult coral trout and 1,154 samples from stripey snapper — located within three reserve areas. After collecting juveniles of both species in protected and unprotected areas over the next 15 months, the researchers found that about half of the juveniles were offspring of fish found in the reserve areas, even though the reserves accounted for just 28 percent of the study area. In other words, fish found in the reserves “punch above their weight in replenishing fishery stocks
,” said Garry Russ, a researcher from James Cook University and one of the authors of the study, published online in the journal Current Biology
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