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Study shows drifting fish larvae allow marine reserves to rebuild fisheries
Date:12/22/2010

r. This approach will provide valuable information to help optimize the placement of reserves, identify the boundaries of fishery stocks, and other applications."

The issue of larval dispersal is also important, the researchers say, because past studies at OSU have shown that large, fat female fish produce massive amounts of eggs and sometimes healthier larvae than smaller fish. For example, a single two-foot vermillion rockfish produces more eggs than 17 females that are 14 inches long.

But these same large fish, which have now been shown to play key roles in larval production and fish population replenishment, are also among those most commonly sought in fisheries.

The study was done in collaboration with the University of Hawaii, Washington State University, National Marine Fisheries Services and the Hawaii Department of Natural Resources. It was funded by Conservation International.

"The identification of connectivity between distant reef fish populations on the island of Hawaii demonstrates that human coastal communities are also linked," the researchers wrote in their conclusion. "Management in one part of the ocean affects people who use another part of the ocean."


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Contact: Mark Hixon
hixonm@science.oregonstate.edu
541-737-5364
Oregon State University
Source:Eurekalert  

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