Assessing biological traits of Amazonian high-value fishes through Local Ecological Knowledge of urban and rural fishers

Pereira, Samantha Aquino; Silva, Rayanna Graziella Amaral da; Campos‐Silva, João Vitor; Batista, Vandick da Silva; Arantes, Caroline C.

doi:10.1007/s10750-021-04569-y

Cited by 2 publications

(2 citation statements)

References 92 publications

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“…The maximum length estimates were comparable to those documented in scientific literature for the six investigated species. These results, in conjunction with those from reproduction, corroborate previous studies demonstrating that FEXK can provide valuable data on strategic life history parameters, especially for species that are important to fishers as food and income sources [20,21,45,46]. In addition to their large sizes, most species studied here are characterized in the literature by their slow growth [32,47].…”

Section: Discussionsupporting

confidence: 87%

“…The comprehensive and location-specific expertise possessed by many fishers presents an opportunity to produce baseline knowledge in these data-deficient situations and improve assessment and conservation initiatives [15][16][17]. In this context, fishers' experiential knowledge (FEXK) has been widely used to understand multiple aspects associated with fishing dynamics, fish behavior, reproduction, as well as temporal changes in the abundance and size of fishery resources (e.g., [18][19][20][21][22][23][24]). Such collaborations between scientists and fishers improve transparency and communication, resulting in increased confidence and legitimacy among fishers in science-based management measures [15,[25][26][27].…”

Section: Introductionmentioning

confidence: 99%

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Complementary Role of Fishers’ Experiential Knowledge to Conventional Science in Terms of Species-Specific Biological Traits and Population Changes in Azorean Waters

Santos

Peixoto

Casal-Ribeiro

et al. 2023

Biology

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Combining scientific information with fishers’ perceptions may be a robust approach for directing decision-makers working with marine ecosystems. This is particularly the case when baseline data on a vulnerable stock are poor, as the integration of fishers’ experiential knowledge can help fill data gaps, as well as inform legitimate management actions, and empower fishing communities in resource management. This study aimed to analyze fishers’ knowledge regarding the biology (reproduction, growth, and maximum size) and temporal changes in the abundance and size of six commercially important marine species (red porgy Pagrus pagrus, veined squid Loligo forbesii, blue jack mackerel Trachurus picturatus, blackspot seabream Pagellus bogaraveo, blackbelly rosefish Helicolenus dactylopterus, and European conger Conger conger) in the Azores small-scale communities. Additionally, a comparison between fishers’ knowledge and available scientific information was performed to determine the former’s value and its possible complementarity with the latter. A total of 105 fishers were surveyed in the nine islands of the archipelago. The results demonstrated a reasonable level of agreement between the information from fishers and scientific literature on the species-specific spawning seasons and growth rates. The median values of size at maturity and maximum length were not statistically different between data sources. Most participants indicated size and abundance trends that were consistent with the literature. This study highlights the usefulness of fishers’ perceptions in improving knowledge about species characteristics and temporal changes in commercially exploited stocks, especially when scientific research is limited, but further research should be encouraged to improve the reliability and consistency of these results.

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Section: Discussionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Complementary Role of Fishers’ Experiential Knowledge to Conventional Science in Terms of Species-Specific Biological Traits and Population Changes in Azorean Waters

Santos

Peixoto

Casal-Ribeiro

et al. 2023

Biology

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Fishers’ knowledge on abundance and trophic interactions of the freshwater fish Plagioscion squamosissimus (Perciformes: Sciaenidae) in two Amazonian rivers

Dutra,

Pereyra,

Hallwass

et al. 2023

Neotrop. ichthyol.

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Small-scale fisheries provide income and food security to local peoples around the world. In the Brazilian Amazon, the pescada (Plagioscion squamosissimus) is among the fishes that contributes most to catches in small-scale fisheries. Our main goal was to evaluate the abundance, size, relevance to small-scale fisheries and trophic ecology of P. squamosissimus in the Tapajós and Tocantins rivers, in the Brazilian Amazon. We combined data from fishers’ local ecological knowledge (LEK) and fish sampling. We expected that fishers in the Tapajós River, less altered by anthropic changes, would cite a higher abundance, larger size and more prey and predators of P. squamosissimus. We interviewed 61 and 33 fishers and sampled fish in nine and five sites in the Tapajós and Tocantins rivers, respectively. The comparison between fishers’ citations and fish sampled indicated a higher relevance of P. squamosissimus to fishers in the Tapajós River, where this fish had an average larger size and where the fishers mentioned more food items. This pattern could be partially related to the history of anthropogenic changes in the Tocantins River. These results indicated that P. squamosissimus is a generalist fish, which could be resilient to fishing and environmental pressures.

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Assessing biological traits of Amazonian high-value fishes through Local Ecological Knowledge of urban and rural fishers

Cited by 2 publications

References 92 publications

Complementary Role of Fishers’ Experiential Knowledge to Conventional Science in Terms of Species-Specific Biological Traits and Population Changes in Azorean Waters

Complementary Role of Fishers’ Experiential Knowledge to Conventional Science in Terms of Species-Specific Biological Traits and Population Changes in Azorean Waters

Fishers’ knowledge on abundance and trophic interactions of the freshwater fish Plagioscion squamosissimus (Perciformes: Sciaenidae) in two Amazonian rivers

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