Table 1.
Meta data of the oceanic whitetip sharks tagged in the western Atlantic Ocean.
Table 2.
Data reception of pop-up satellite archival tags and distances traveled by oceanic whitetip sharks tagged in the western Atlantic Ocean between 2010 and 2012.
Fig 1.
Depth and temperature preferences of oceanic whitetip sharks tagged in the western Atlantic Ocean between 2010 and 2012.
Depth frequencies includes sharks OCS1 to 7 and temperature frequency includes data on all sharks.
Table 3.
Average time spent within the mixed surface layer by oceanic whitetip sharks tagged in the western Atlantic Ocean.
Fig 2.
Post-processed tracks of oceanic whitetip sharks tagged in the western Atlantic Ocean.
The downward triangles represent the tagging position and the upward triangles the end of the track. The grey-shaded area represents the error around estimated positions. (A) Oceanic whitetip sharks tagged in 2010 and 2011.(B) Oceanic whitetip sharks tagged in March
Fig 3.
Distance from the tagging position as a function of days at liberty for oceanic whitetip sharks tagged in the western Atlantic Ocean between 2010 and 2012.
Fig 4.
Fishing effort of the Brazilian longline fleet represented by the number of hooks deployed from 1999 to 2011.
Fig 5.
Proportion of the two different fishing strategies of the Brazilian longline fleet between 1999 to 2011.
Fig 6.
Mean CPUE values of oceanic whitetip sharks caught by foreign tuna longline vessels chartered by Brazil operating from 2004 to 2010.
Table 4.
P-values of Two-sample Kolmogorov-Smirnov tests comparing CPUE values for all quarters of the year.
Fig 7.
Number of oceanic whitetip sharks monitored per month.
Fig 8.
Kernel density estimation of post-processed tracks showing the areas of high utilization by oceanic whitetip sharks tagged in the western Atlantic Ocean between 2010 and 2012.
The left panel represents the 1st quarter of the year and the right represents the 2nd. (A) Values of occurrence per set (grey scale) for the species from foreign tuna longline vessels chartered by Brazil operating from 2004 to 2010. Doted lines mark the area where the occurrence data were analyzed. (B) Fishing sets locations (circles) from foreign tuna longline vessels chartered by Brazil operating from 2004 to 2010