Western equatorial Atlantic Ocean, Istiophorid billfish, Satellite tags, Hook comparisons
A joint research project between Brazilian and U.S. scientists was initiated in 2004 to investigate the interaction of istiophorid billfishes with pelagic longline fisheries in the western equatorial South Atlantic Ocean. This project incorporates two general themes (1) an investigation into several aspects of pelagic longline operations by comparing catch results between circle and “J” style hooks, time-of-capture with hook time recorders, and by direct monitoring of pelagic longline gear behavior, and (2) an additional evaluation of billfish trophic ecology using a combination of satellite tag technology and traditional analyses (e.g., gut contents and ageing). Data obtained from this research will provide additional data for the evaluation of habitat-based stock assessment modeling efforts for billfish and other pelagic fish species.
Collective Volume of Scientific Papers – International Commission for the Conservation of Atlantic Tunas (ICCAT)
David W. Kerstetter, Fabio H.V. Hazin, J. C. Pacheco, and John E. Graves. 2007. Joint United States-Brazil Billfish Research in the Western South Atlantic .Collective Volume of Scientific Papers – International Commission for the Conservation of Atlantic Tunas (ICCAT) , (5) : 1612 -1615. https://nsuworks.nova.edu/occ_facreports/57.