Fishers' knowledge on the ecology, impacts and benefits of the non-native peacock bass &lt;i&gt;Cichla kelberi&lt;/i&gt; in a coastal river in southeastern Brazil

Catelani, Paula Araújo; Petry, Ana Cristina; Pelicice, Fernando Mayer; Silvano, Renato Azevedo Matias

doi:10.15451/ec2020-11-10.04-1-16

Cited by 8 publications

(3 citation statements)

References 44 publications

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“…To approach and interview the fishers, this research followed methodology widely applied in ethnobiological and social studies concerning ethical issues (e.g., Cetra & Petrere Junior, 2001;Silvano et al, 2006;Hallwass et al, 2013;Catelani et al, 2021), and the research protocol followed the main guidelines of the Declaration of Helsinki for research with humans. Each fisher was invited separately to participate in the research, and the decision to collaborate was voluntary.…”

Section: Data Collectionmentioning

confidence: 99%

The effects of river impoundment on artisanal fishers in the Middle Tocantins River, Brazil

Santos

Pelicice

2023

Acta Limnol. Bras.

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Aim The present study investigated the social impacts caused by the construction of a large hydropower dam (Lajeado Dam) on artisanal fishers in the Middle Tocantins River, evaluating how the impoundment affected fishing techniques (locations, transport and gears), operation (income, effort and costs), and fisher’s well-being. Methods The study interviewed 30 artisanal fishers (Colony Z-04, Porto Nacional, TO) between August and October 2018 with the application of a structured questionnaire. Results Results indicated that fishing is socially important as a source of income and occupation, carried out essentially by men with low levels of formal education. Fishers reported, however, significant changes in the fishery system after the impoundment of the Tocantins River. The main fishing area was maintained, but fishers abandoned some sites. There were significant changes in fishing equipment, with an increase in the use of aluminum boats and outboard engines, and a reduction in the use of various gears, replaced by the use of gillnets. Almost all fishers (96.6%) declared that fishing effort and the financial costs increased after damming. Many also reported an increase in financial income (70%), but part reported a decrease, no change or could not say. The majority reported that the impoundment damaged the fishing activity (80%) and their well-being (individual and their families; 83.3%); dissatisfaction with the profession also increased. Conclusions Results indicated that the impoundment created by Lajeado Dam impacted several aspects of artisanal fisheries in the Middle Tocantins, with a wide perception of damage, which indicates that working conditions of fishers have declined. This information is relevant and can support fisheries management in the Tocantins River Basin, in order to balance societal demands with sustainability goals and fisher’s needs.

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Section: Data Collectionmentioning

confidence: 99%

The effects of river impoundment on artisanal fishers in the Middle Tocantins River, Brazil

Santos

Pelicice

2023

Acta Limnol. Bras.

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“…Conforme estabelecido na Resolução n. 02/2024 do Conselho Estadual de Pesca (CEPESCA), são consideradas exóticas as espécies de peixes que não são originários de determinada bacia hidrográfica, causando interferência negativa nas populações nativas de peixes. E as espécies introduzida são exóticas, que inserida no novo ambiente causam o desequilíbrio e perda de biodiversidade, pela perda ou extinção local das espécies nativas, alterações nas distribuição e redução na diversidade (Latini & Petrere, 2004;Catelani et al 2021;Franco et al 2021).…”

Section: Introductionunclassified

Introduction dynamics: the advancement of peacock bass (Cichla sp.) in aquatic ecosystems of the pantanal (mato grosso)

Santos,

Lázaro,

Borges

et al. 2024

CLIUM

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The aim of this study was to survey the spatial distribution of the Cichla sp. species in aquatic bodies around the municipality of Cáceres-MT and the evolution of records for the Brazilian Pantanal. Collections took place in the marginal lakes and troughs of the Caramujo, Padre Ignácio and Paraguay rivers, with collections during high and low water periods in 2018 and 2019. Interviews were conducted with fishermen using a semi-structured questionnaire and obtaining locations where tucunaré occur. Secondary data was obtained by searching for articles on the occurrence of species in the Pantanal. Thirty-five specimens of Cichla kelberi were caught in 21 localities in the study area. Interviews revealed 44 localities, predominantly on the left banks of the Paraguay River. In the literature, there have been 9 studies on the occurrence of tucunaré in the Brazilian Pantanal, 7 of which in the southern Pantanal. The data points to a distribution of C. piquiti further south and C. kelberi further north in the biome, which may be due to the routes of introductions and the characteristics of the biome reducing the speed of diffusion.

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“…Ethnobiological studies addressing fishers' knowledge have long been recognized as an invaluable source of information, especially in tropical countries lacking research capacity (Johannes 1998). Indeed, fishers' knowledge has provided many useful and new data on fish ecology including reproduction, trophic interactions, distribution, migration, invasive species, temporal trends in abundance or size, and interactions with aquatic mammals (Silvano et al 2006;Silvano and Valbo-Jørgensen 2008;Le Fur et al 2011;Turvey et al 2013;Pont et al 2016;Lopes et al 2019;Santos et al 2020;Araujo Catelani et al 2021;Ribeiro et al 2021). Furthermore, ethnobiological studies on how fishers name and classify fish have provided relevant information to improve fisheries monitoring and collaboration between fishers and biologists in small-scale coastal fisheries (Begossi and De Figueiredo 1995;Paz and Begossi 1996;Seixas and Begossi 2001;Freire and Pauly 2005;Begossi et al 2011;Previero et al 2013;Pinto et al 2016;Carvalho et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Which fish is this? Fishers know more than 100 fish species in megadiverse tropical rivers

Silvano

Pereyra

Begossi

et al. 2022

FACETS

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Ethnobiological studies on folk, common, or popular names that fishers use to identify fish can help improve fisheries monitoring and collaborations between fishers and researchers. This study investigates fishers’ knowledge (recognition, naming, and habitat use) on 115 and 119 fish species, respectively, in the Negro and Tapajos Rivers, two megadiverse rivers in the Brazilian Amazon, and investigates the relationship between such knowledge and fish importance to fisheries, fish abundance, and fish size. We also compared fishers’ perceptions on fisheries and fish abundance with literature data on fish harvests and fish sampling. We interviewed 16 fishers in 16 communities (one fisher per community, 8 communities along each river). These fishers recognized an average of 91 ± 10.4 species in the Negro River and 115 ± 7.2 species in the Tapajos River, but all fishers recognized 114 species in Negro and all species in Tapajos. The fishers’ knowledge of fish species was positively related to fishers’ perceptions on fish abundance, size, and importance to fisheries in the Negro, but only positively related to fish size in the Tapajos. Our results highlight the usefulness of fishers’ knowledge to providing data on use and cultural relevance of fish species in high diversity aquatic ecosystems.

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Fishers' knowledge on the ecology, impacts and benefits of the non-native peacock bass <i>Cichla kelberi</i> in a coastal river in southeastern Brazil

Cited by 8 publications

References 44 publications

The effects of river impoundment on artisanal fishers in the Middle Tocantins River, Brazil

The effects of river impoundment on artisanal fishers in the Middle Tocantins River, Brazil

Introduction dynamics: the advancement of peacock bass (Cichla sp.) in aquatic ecosystems of the pantanal (mato grosso)

Which fish is this? Fishers know more than 100 fish species in megadiverse tropical rivers

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