Enhancing Proof-of-Concept Procedures of Potential Bycatch Reduction Devices in the Southeastern Shrimp Fishery

This study investigated potential finfish reduction devices (BRDs) for shrimp trawls. The major objective was to perform proof-of-concept studies of selected bycatch reduction devices and determine if any would be candidates for future in-depth evaluations for federal certification. Prototypes of new BRDs were obtained from shrimp fishermen, NOAA Fisheries staff, foreign assessments and university scientists. These concepts were subjected to evaluations aboard a commercial shrimp trawler operating under actual fishing conditions. Utilizing federal BRD testing protocols, the experimental gears were towed simultaneously in nets and compared with trawls not equipped with fish excluders. Data obtained from the comparative tows consisted of total catch, total shrimp, and differences in major bycatch species. Analysis of catch parameters were performed using prescribed formulas adopted by NOAA Fisheries. Statistical analyses were performed to provide input for proof of concept. The four prototypes tested exhibited potential reduction effectiveness for important bycatch species in the northern Gulf of Mexico and/or reduced shrimp loss, indicating they may be candidates for further investigations and modifications to move forward in the BRD certification process.