Factors affecting the operational interaction between the South American sea lions and the artisan gillnet fishery in Chile

Sepúlveda, Maritza; Martínez, Tamara; Oliva, Doris; Couve, Pablo; Pavez, Guido; Navarro, Claudia; Stehlík, Milan; Durán, L. René; Luna‐Jorquera, Guillermo

doi:10.1016/j.fishres.2018.01.014

Cited by 19 publications

(26 citation statements)

References 37 publications

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“…Popular management actions to manage human-wildlife conflict include attempts to separate problem animals from affected human populations, for example, fencing to keep elephants from crops (38); compensation (39); use of equipment/infrastructure to control interactions e.g. devices to deter sea lions (15); and lethal control-either of problem animals (40) or of the larger population (41). We asked fishers what they thought would be the best solution to manage their interactions with sea lions.…”

Section: How Fishers Frame Solutionsmentioning

confidence: 99%

“…Worryingly, increases in the abundance of some marine mammals are generating tension with fisheries, particularly small-scale coastal fisheries (12,13). For example, in South America, pinniped depredation of catch is estimated to occur in ~56% of catches (14,15), and lead to average economic losses of ~30 per cent (16). In extreme cases, fishers can react to conflict with mammals through illegal behaviour, which can result in shooting or poisoning them (17,18).…”

Section: Introductionmentioning

confidence: 99%

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Disconnects in global discourses—the unintended consequences of marine mammal protection on small-scale fishers

Davis

Alfaro‐Shigueto

Arlidge

et al. 2020

Preprint

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Globally, the populations of many marine mammals remain of critical concern after centuries of exploitation and hunting. However, some marine mammal populations (e.g. pinnipeds) have largely recovered from exploitation, and interactions between these species and fisheries-particularly small-scale fisheries-is once again of concern globally. The large scope and widespread scale of interactions highlights the local disconnect between two global policies: marine mammal conservation and small-scale fisheries protection. In this research, we explore these conflicting global policies by assessing the perceptions of coastal smallscale fishers in Peru and Chile regarding their interactions with pinnipeds, including the South American sea lion (Otaria flavescens) and South American fur seal (Arctocephalus australis). We surveyed 301 gill net fishers and assess perceptions using a best-worst scaling methodology. We find that fishers are chiefly concerned with the increase in pinniped populations, perceive that their interactions with pinnipeds have significantly increased over the past 80 years, and report pinniped-driven catch and income losses ≥ 26 per cent. Surprisingly, fishers do not believe that compensation schemes will resolve this issueinstead they overwhelmingly call for pinniped population culls. The reported number of pinnipeds illegally killed by fishers suggests the potential for large negative impacts on these protected species, and a loss of legitimacy in marine regulation. Collectively, our results portray a sense of marginalisation from fishers'-that global policy treats them as less "important" than marine mammals. Our results highlight the increasing disconnect in global policy, which on one hand seeks to protect threatened marine mammal populations, and on the other seeks to promote the welfare of small-scale fishers.

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Section: How Fishers Frame Solutionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Disconnects in global discourses—the unintended consequences of marine mammal protection on small-scale fishers

Davis

Alfaro‐Shigueto

Arlidge

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Studies of potential temporal and/or spatial variations in the dietary composition in the short-term are relevant because the SASL diet is composed of species that are also captured by fishers, leading to significant interactions with fisheries (Goetz et al 2008;González et al 2016;Sepúlveda et al 2018). In northern Chile, SASL feeds mostly in shallow (17 AE 2 m diving depth) coastal waters that overlap with fishing areas (Hevia-Álvarez 2013).…”

Section: Introductionmentioning

confidence: 99%

“…2016; Sepúlveda et al . 2018). In northern Chile, SASL feeds mostly in shallow (17 ± 2 m diving depth) coastal waters that overlap with fishing areas (Hevia‐Álvarez 2013).…”

Section: Introductionmentioning

confidence: 99%

Diet composition of an opportunistic predator from an upwelling area in the Southeastern Pacific

et al. 2020

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The aim of this study was to use scat analysis to analyse the dietary composition of the South American sea lion (SASL, Otaria byronia) over a short temporal scale and in different but closely located colonies in the Humboldt Current System of northern Chile. Scat samples were collected at Arica (18°34 0 S), Iquique (20°48 0 S) and Mejillones (23°04 0 S) during the summer (January to March) and winter (July) of 2015. A total of 16 595 individual prey items from nine species were found in 194 of the 215 scat samples. In general, squat lobster (Pleuroncodes monodon) was the most important prey item for the sea lion diet, both by number and according to the index of relative importance (%IRI), followed by anchovy (Engraulis ringens), which was the most frequent prey item in the scats and the most important by weight. Patagonian squid (Loligo gahi) ranked third in importance in the sea lion diet. However, some spatiotemporal variations in the consumption of prey were found. Squat lobster was the most important prey for sea lions in Arica and Iquique, while anchovy was the dominant prey in Mejillones. Regarding seasonal variation, squat lobster was more important in winter than in summer in the three localities, while anchovy was also more important during winter, except in Mejillones where the levels of consumption of this prey were similar in both seasons. These results show that SASL adjust their dietary preferences, modifying the contribution of different prey both spatially and temporally. Spatiotemporal variations in the SASL diet can be explained by temporal changes in the distribution and abundance of their prey.

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“…Butler et al 2015;De Mar ıa et al 2014;Meek et al 2011). Research has shown the importance of collaboration to identify management measures that are accepted and effective (De Mar ıa et al 2014;K€ onigson and Lunneryd 2013;K€ onigson et al 2015;Sep ulveda et al 2018). Results at individual level show that local attitudes toward management strategies vary greatly between studies.…”

Section: Introductionmentioning

confidence: 99%

Local People’s Appraisal of the Fishery-Seal Situation in Traditional Fishing Villages on the Baltic Sea Coast in Southeast Sweden

Johansson

Waldo

2020

Society & Natural Resources

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The gray seal (Halichoerus grypus) population in the Baltic Sea is flourishing. On the one hand, this can be interpreted as successful conservation management but, on the other, the gray seal has also become a persistent problem for small-scale coastal fisheries. Departing from the appraisal theory of emotion, this case study investigated local people's appraisals of the current situation of small-scale fishery and seals in three fishing villages. Survey results and interviews showed that the fishery-seal situation is perceived as being highly relevant, with negative implications, and local communities and fishers lack the tools to tackle the challenges. Successful management requires not only attention to local context and stakeholder groups, but also to people's individual interpretation or appraisal of the situation. Place-specific coping strategies should be sought, to balance the seal population with the promotion of smallscale fisheries as a sustainable local industry and as a cultural heritage.

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Factors affecting the operational interaction between the South American sea lions and the artisan gillnet fishery in Chile

Cited by 19 publications

References 37 publications

Disconnects in global discourses—the unintended consequences of marine mammal protection on small-scale fishers

Disconnects in global discourses—the unintended consequences of marine mammal protection on small-scale fishers

Diet composition of an opportunistic predator from an upwelling area in the Southeastern Pacific

Local People’s Appraisal of the Fishery-Seal Situation in Traditional Fishing Villages on the Baltic Sea Coast in Southeast Sweden

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