THE BILLFISH FOUNDATION
Fueled by contributions from the Presidential Challenge Tourna- ment Series and other donors, TBF’s efforts in Central America yielded significant gains in con- servation and science efforts in the region in 2011. “Through TBF’s strong partnership with OSPESCA, the regional fisheries agency, and our partners PRONA- TURE and FECOPT in Costa Rica we have been able to collectively produce a very real sportfishing agenda across Central America,” noted TBF President Ellen Peel, “and we hope to be able to con- tinue these efforts in 2012.”
Tagging & Catch/Effort Initiative In 2011, TBF finalized a program that brought 6,860 free tags along with 170 tag applicators to the sportfishing fleets throughout Central America. Tags were pro- vided to those who had not been traditionally participating in the TBF Tagging Program in order to get more complete coverage of billfish in the region.
Already reported are recent re- captures that include a striped marlin tagged off of the Furuno Bank in Costa Rica that was re-
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captured off of Ecuador and a blue marlin tagged off of Piñas Bay, Panama recaptured in Colombia. With the augmentation of this enhanced tagging TBF expects increased recapture rates through time. Tag return data is used in stock assessments as it can measure population movements, growth rates and longevity–all vital ele- ments of accurate assessment work.
Catch per-unit-effort (CPUE) data is used as an index of stock abun- dance in fisheries assessment work. It changes, increases or decreases, give scientists a measure of how a particular stock of fish changes in population size. CPUE data was collected and analyzed from eight Central American billfish tourna- ments, with some data covering a
Sailfish Catch per Vessel per Day from Costa Rica Presidential Challenge Tournament Series; 1997 – 2011.
Sporting Traditions: The Magazine · 2011 Edition ·
PresChallenge.com
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