Runner-up Winner 2007 - Implementing the Winning Idea
The Nested Cylinder Bycatch Reduction Device
With funding provided from the Walton Family Foundation, WWF was able to provide a grant to the inventor of this device to implement further field-testing of this device in developing improvements to the performance and physical characteristics of the Nested Cylinder.
The winning designer of the Nested Cylinder took advantage of behavioral differences and swimming abilities to develop the prototype Nested Cylinder Bycatch Reduction Device (NCBRD). In conducting that work several potential modifications to the original device were identified that could potentially improve the bycatch reducing ability of the NCBRD and could improve the possibility of the device being adopted by fishers.
Because loss of shrimp while using a BRD is critically important to fishers, this study also investigated ways to maximize shrimp retention in this project. Previous work had indicated that fishers were concerned about the amount of hard structure in the device, the weight of the device and its cost.
Testing of two derivations of the original device during 2010 / 2011 produced a modified device, which exceeded the 30% bycatch reduction required by legislation, and was able to maintain almost 100% shrimp retention. This device will be submitted to NOAA Fisheries for certification during 2011.
The winning designer of the Nested Cylinder took advantage of behavioral differences and swimming abilities to develop the prototype Nested Cylinder Bycatch Reduction Device (NCBRD). In conducting that work several potential modifications to the original device were identified that could potentially improve the bycatch reducing ability of the NCBRD and could improve the possibility of the device being adopted by fishers.
Because loss of shrimp while using a BRD is critically important to fishers, this study also investigated ways to maximize shrimp retention in this project. Previous work had indicated that fishers were concerned about the amount of hard structure in the device, the weight of the device and its cost.
Testing of two derivations of the original device during 2010 / 2011 produced a modified device, which exceeded the 30% bycatch reduction required by legislation, and was able to maintain almost 100% shrimp retention. This device will be submitted to NOAA Fisheries for certification during 2011.