Incidental capture of sea turtles in southeast Brazil: Assessment of the perceptions of artisanal fishers

Awabdi, Danielle Rodrigues; Pestana, Inácio Abreu; Bondioli, Ana Cristina Vigliar; Zappes, Camilah Antunes; Beneditto, Ana Paula Madeira Di

doi:10.1016/j.ocecoaman.2021.105696

Cited by 6 publications

(7 citation statements)

References 32 publications

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“…Quantitative inclusion of the human element can increase our understanding of marine conservation issues (Awabdi et al, 2021;Primack et al, 2021). Our results highlight the fact that age and years of experience modify the perception of bycatch, as Bender et al (2014) observed.…”

Section: Data From the Observers Vs Fisherssupporting

confidence: 59%

“…In this study, the observer data indicated higher frequency of catch of green and olive ridley turtles, while the fishers' data identified hawksbill turtles to be most frequently captured In this sense, it is important to train fishers in species identification to improve accuracy of fisheries data collection (Fulton et al, 2019). Awabdi et al (2021) in southeastern Brazil also found that green turtle was the most-captured species with all fishing gear (gillnet, trawl net and longline) according to the fishers' perception, and Huang and Liu (2010) highlighted the capture of the olive ridley turtle by tuna longline fleets in the Indian Ocean.…”

Section: Data From the Observers Vs Fishersmentioning

confidence: 76%

“…With this gear, the turtle ingests the hook with the bait, up to 40% deep in the throat with the highest probability of mortality (Stokes et al, 2011;Parga, 2012;Stokes et al, 2012;Swimmer et al, 2014). According to the fishers' perception, nets rank second in the causes of bycatch and the mortality of sea turtles, as in Pacific or Atlantic fisheries, especially at the highest levels by gillnets and trawl nets (Wallace et al, 2010;Wallace et al, 2013;Pingo et al, 2017;Awabdi et al, 2021). Regarding the type of hook, fishers do indicate that the Jhook is responsible for a higher bycatch rate compared to circle hook (Annex 4), up to 19.3 turtles per 1,000 hooks for longlines (eastern Pacific Ocean) (Wallace et al, 2010), with the dimensions (length) of between 41 to 60 mm and 20 to 30 mm having the greatest rates of turtle bycatch (Caracappa et al, 2018).…”

Section: Data From the Observers Vs Fishersmentioning

confidence: 99%

“…However, validating the fishers' answers with data collected directly by observers on the fishing vessels could help to minimize this bias (Carreras et al, 2004). Finally, understanding how worldwide fishers perceive and use resources has significant management and policy implications (Awabdi et al, 2021), which would allow the development of robust management models for sustainable fishing, as pointed out by Karnad et al (2014).…”

Section: Data From the Observers Vs Fishersmentioning

confidence: 99%

“…Therefore, it is essential to evaluate whether there is a difference or discrepancy between the fishers' perception of the phenomenon and the observers' data concerning the incidental catch of turtles, since each stakeholder group may have an unique perspective towards these conflicts (Barrios-Garrido et al, 2019). Understanding how fishers perceive the problem has significant implications for management and policies (Moore et al, 2010;Mason et al, 2020;Awabdi et al, 2021). Although, perceptions and attitudes are difficult to change (de Carvalho et al, 2016), raising awareness robustly should help this conceptual change and, consequently, lead to a change in behaviors (Fu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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By-catch of sea turtles in Pacific artisanal fishery: Two points of view: From observer and fishers

et al. 2022

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Fisheries bycatch is a primary driver of population declines in marine megafauna. These captures not only have environmental impacts, they also have economic consequences for fishers such as direct losses when repairing fishing gear. Therefore, evaluating the fishers’ perception of bycatch and comparing it with data from scientific fisheries observers might provide a broader view of the current situation these species face. To do this, we obtained data concerning the bycatch of 1,838 sea turtles between 2008-2018 in the Eastern Pacific Ocean as well as informative surveys from 421 artisanal fishers surveyed in 2020. There is a discrepancy between the bycatch observed and the fishers’ perceptions of it. The observers’ results identified that high rates of incidental capture of sea turtles are associated with the mahi mahi fishery that occurs during winter and is a shallow set fishery using fish as bait. The olive ridley turtle was the main species affected by bycatch. According to the fishers’ perception, bycatch was higher with the use of J-hooks and a longline (compared to circle hooks and to gill nets and trawl nets) and when the target species are pelagic fish during the winter season. In addition, the fishers’ perception showed that 39.4% considered incidental fishing as an environmental problem and 28.5% considered it as a nuisance, while 32.1% do not consider sea turtle bycatch as a problem. These findings suggest that 60% of fishers do not consider it a need to protect sea turtles. Given the different responses between fisheries observers and fishers’ perception, it is clear that more dialogue is necessary to raise awareness about the effects of bycatch on worldwide sea turtle populations. Thus, there is an enormous potential to recruit/increase fishers’ active participation for turtle protection. In this context, the idea of including the fishers’ perception into any management strategy or conservation measure should be reinforced in order to effectively reduce the bycatch of these iconic species.

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Section: Data From the Observers Vs Fisherssupporting

confidence: 59%

Section: Data From the Observers Vs Fishersmentioning

confidence: 76%

Section: Data From the Observers Vs Fishersmentioning

confidence: 99%

Section: Data From the Observers Vs Fishersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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By-catch of sea turtles in Pacific artisanal fishery: Two points of view: From observer and fishers

et al. 2022

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Impact of the socioeconomic activities on sea turtle conservation in the Potiguar Basin, north-eastern Brazil (2010–2019)

et al. 2022

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Brazil has a coast that is threatened by economic activities and accelerated urbanisation process, causing ecosystem unbalance and decreasing socioenvironmental quality. We analysed data collected from 2010 to 2019 during the Beach Monitoring Project in north-eastern Brazil to quantify sea turtle strandings with signs of anthropogenic interaction, verify the impact of economic activities on the strandings, and analyse a possible relation between socioeconomic conditions and the strandings. Anthropogenic interaction was classified into 12 categories (eight related to fishing activities). We analysed 6007 strandings, including four sea turtle species and anthropogenic interaction was observed in 12.88% (n = 774) of the strandings. Chelonia mydas represented 94.05% of the total records with anthropogenic interaction and fishing-related strandings accounted for 81.65%. Juvenile individuals were more affected than adults; likewise, females were more affected than males. Icapuí and Areia Branca are very populous municipalities, and showed large number of strandings with signs of anthropogenic interaction. Our analyses revealed that fishing-related strandings were reported throughout the year; however, a larger number of records occurred in the dry season and during the lobster-fishing season. Our study brings knowledge on sea turtle strandings in north-eastern Brazil, providing results that support public policies to mitigate anthropogenic impacts on sea turtles.

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The Need and Status of Sea Turtle Conservation and Survey of Associated Computer Vision Advances

Paul

2021

2021 IEEE 8th Uttar Pradesh Section International Conference on Electrical, Electronics and Computer Engineering (UPCON)

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Incidental capture of sea turtles in southeast Brazil: Assessment of the perceptions of artisanal fishers

Cited by 6 publications

References 32 publications

By-catch of sea turtles in Pacific artisanal fishery: Two points of view: From observer and fishers

By-catch of sea turtles in Pacific artisanal fishery: Two points of view: From observer and fishers

Impact of the socioeconomic activities on sea turtle conservation in the Potiguar Basin, north-eastern Brazil (2010–2019)

The Need and Status of Sea Turtle Conservation and Survey of Associated Computer Vision Advances

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