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New research on migratory behavior of oceanic whitetip sharks can help shape conservation strategies
Date:2/20/2013

STONY BROOK, NY, February 20, 2013As the nations of the world prepare to vote on measures to restrict international trade in endangered sharks in early March, a team of researchers has found that one of these species the oceanic whitetip shark regularly crosses international boundaries. Efforts by individual nations to protect this declining apex predator within their own maritime borders may therefore need to be nested within broader international conservation measures.

The research team, which included researchers from Microwave Telemetry, Inc., the Cape Eleuthera Institute, and the Institute for Ocean Conservation Science at Stony Brook University, attached pop-up satellite archival tags to one male and 10 female mature oceanic whitetip sharks off Cat Island in The Bahamas in May 2011, and monitored the sharks for varying intervals up to 245 days. The tags recorded depth, temperature, and location for pre-programmed periods of time. At the end of the time period, the tags self-detached from the sharks, and reported the data to orbiting satellites. Their findings, published online today in the journal PLOS ONE, show that some of these sharks roamed nearly 2,000 kilometers from the spot where they were caught, but all individuals returned to The Bahamas within a few months.

"While the oceanic whitetip shark is one of the most severely overexploited shark species, it is also among the least studied because it lives much of its life far from land in the open ocean," said Lucy Howey-Jordan, scientific liaison for Microwave Telemetry, Inc. and lead author. "Before this study and our ongoing research, very few of these sharks had been fitted with satellite tags, and the data we obtained will help establish new conservation measures."

All the tags, except the one attached to the male shark, reported data. Of the eight tagged oceanic whitetip sharks tracked for more than 31 days, three stayed within or very near The Bahamas Excl
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Contact: Cindy Yeast
cdyeast@earthlink.net
720-542-9455
The Institute for Ocean Conservation Science
Source:Eurekalert  

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