The
Fruit of a Shark-Tagging Program
Eastern Tropical Pacific Marine Conservation
Corridor
Remember about the news earlier this year?
William and Fred Buyle took part in a shark-tagging
expedition for the Malpelo Fundation back in March 2008.
Between the two of them, they tagged 46 scalloped hammerhead
sharks (Sphyrna lewini) , 4 galapagos sharks
(Carcharhinus galapagensis) and 3 ragged-tooth
sharks (Odontaspis ferox). Mission accomplished
considering the original plan was to tag 47 scalloped
hammerhead sharks and 7 ragged-tooth sharks.
What you see on the right is a satellite view of the
Eastern Tropical Pacific Marine Conservation Corridor
composed of the Galapagos Islands (Ecuador), the Cocos
Islands (Costa Rica), and Mapelo and Gorgona Islands
(Colombia). All these islands are UNESCO World Heritage
Sites.
The arched path going from Malpelo Island to the Galapagos
Islands is that of a 2.2 meter female hammershead shark
which was tagged with an acoustic device during the
March 2008 expedition
.
In the beginning of April, the acoustic tag was detected
in the Cocos Islands, a mere distance of 687 kilometers
from Malpelo Island. It was established that this female
shark travelled another 710 km from the Cocos Islands
between the end of May and the beginning of July when
the tag was again detected near Darwin & Wolf Islands
which are part of the Galapagos Islands.
Thanks to the shark-tagging program, it is now demonstrated
for the first time that sharks do indeed travel within
the Tropical Eastern Pacific Marine Conservation Corridor.
This underlines the necessity of implementing regional
and international regulations in order to protect this
apex predator from being eradicated through indiscriminate
fishing practices.
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