The effectiveness of a modified turtle excluder device (TED) in reducing the bycatch of elasmobranchs in the Atlantic seabob (Xiphopenaeus kroyeri) industrial trawl fishery of Guyana

Authors: 

Garstin, A., Oxenford, H.A.

Year: 

2018

Journal/Publisher Name: 

Gulf and Caribbean Research

Publisher Address: 

Volume (Issue #): 

29

Page #s: 

10-23

Contact information: 

Aaron Garstin: aarongarstin@gmail.com
Summary: 

The study tested the use of a modified turtle exluder device (TED) - using substantially reduced grill spacing - in order to reduce elasmobranch bycatch in the Guyanese seabob shrimp fishery. The use of the modified TED resulted in a significant reduction (by 40%) of the bycatch rate of elasmobranchs. The TED also was highly effective in reducing the capture of three "Near Threatened" ray species. However, the TED preferentially released larger-sized individuals, meaning that smaller-sized individuals and species, including the "Critically Endangered" Bancroft's numbfish, were still captured by the trawl. Since the modified TED was generally successful in reducing important elements of elasmobranch bycatch, future study will extend the study to determine the impact of the TED on the capture rate of the target seabob shrimp.