Spatial management units for industrial demersal fisheries in southeastern and southern Brazil

Rosso, Ana Paula; Pezzuto, Paulo Ricardo

doi:10.3856/vol44-issue5-fulltext-11

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…According to Pezzuto and Benincà (2015), the current licensing system encourages excessive effort concentrated in a region with limited fishing resources. Some authors suggest that licensing should move from a species-based to a spatial and seasonal-based approach, by defining smaller management areas according to their species assemblages, bottom characteristics, depth, fleet dynamics and technical considerations, where fleets would be allowed to operate only within one or a few units, following specific management measures (Martins, 2017;Perez et al, 2001;Pezzuto & Benincà, 2015;Rosso & Pezzuto, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…Another potential management action to reduce bycatch in the bottom trawl fishery is a spatial/seasonal-based approach in the management of bottom trawling in south-eastern-southern Brazil (Martins, 2017;Perez et al, 2001;Pezzuto & Benincà, 2015;Rosso & Pezzuto, 2016). Developing solutions to the problem of sea turtle bycatch and mortality in this fishery is challenging, considering the biological, economic, social, structural, legal and operational complexities of fishing.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Incidental capture and mortality of sea turtles in the industrial double‐rig‐bottom trawl fishery in south‐eastern Brazil

Tagliolatto

Giffoni²,

Guimarães

et al. 2019

Aquatic Conservation

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Incidental capture by fisheries is one of the principal threats to sea turtles. This study analysed spatial and temporal patterns of sea turtle bycatch, and estimated the direct initial mortality rate of these animals, in the industrial double‐rig‐bottom trawl fishery in south‐eastern Brazil. This is also the first attempt to relate bycatch/at‐sea mortality in bottom trawling to stranded turtles found along the adjacent coast. The fishery was monitored from October 2015 to April 2018 through data collected voluntarily by the captains of eight industrial double‐rig trawlers. Two hundred and one sea turtles were captured during 9362 tows (43,657.52 trawling hours), resulting in a catch per unit effort (CPUE) of 0.0025 ± 0.0032 turtles h−1 with a standard net of 30.5 m headrope, with no significant difference between the estimated CPUEs for licensed shrimp and demersal fish trawlers. Caretta caretta (52.24%) and Lepidochelys olivacea (38.81%) were the most frequently captured species. According to Generalized Linear Models, C. caretta bycatch was significantly higher during winter, at lower latitudes (−24° to −23°) and higher longitudes (−42° to −40°), while the L. olivacea bycatch was significantly higher at higher latitudes (−23° to −21°). The direct initial mortality rate of sea turtles in the shrimp trawlers was 7.65 ± 3.85%. However, none of the dead individuals subsequently released with plastic tags (n = 10) were found stranded on the coast. Mortality was not significantly related to the depth or duration of the trawling. The results of this study suggest the need for improvements to the current management of the bottom trawl fishery in Brazil, moving from a species‐based to a spatial and seasonal‐based approach. There is also a need to develop turtle excluder devices adapted to local fishing conditions.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%