Abstract
Fishing operations to catch tuna on aggregated schools at the vicinity of a data buoy in the Western Equatorial Atlantic
Highlights
The present study aims to describe the fishing technology and methods to catch tunas on aggregated schools, the spatial distribution of the fishing activities in the vicinity of the data buoy, identifying and discussing the likely impacts derived from these actions
The positions of fishing operations were recorded by a Global Positioning System (GPS) device, which were used to produce thematic maps, by the ArcGIS software version 9.3, which show the spatial distribution of fishing activities
The tuna fleet was composed by nine wooden motorboats with the following specifications: length overall (LOA) from 12.5m to 14.4m; Gross Tonnage (GT) ranging from 16.9 to 33.1 (20.4±4.9); average power engine of 110HP; average fuel capacity of 1,320 diesel gallons; and 8 to 15ton in the fish hold capacity
Summary
The present study aims to describe the fishing technology and methods to catch tunas on aggregated schools, the spatial distribution of the fishing activities in the vicinity of the data buoy, identifying and discussing the likely impacts derived from these actions. There are two kinds of bamboo poles: the short one, with 2.7m in total length and 3cm in diameter, equipped with polyamide monofilament 1.6mm Ø, usually attached to barbless or J-type hooks baited with raffia or silicone lure, respectively.
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