What fisher diets reveal about fish stocks

Autor(es)

Lopes, Priscila F. M. ^[1] ; Hanazaki, Natalia ^[2] ; Nakamura, Elaine M. ^[2] ; Salivonchyk, Svetlana ^[3] ; Begossi, Alpina ^[4]

Afiliação do(s) autor(es)

^[1] Univ Fed RioGrande Norte, Dept Ecol, Natal, RN - Brazil

^[2] Univ Fed Santa Catarina, Dept Ecol & Zool, Ctr Biol Sci, Campus Univ, Sala 009 Bloco C Corrego Grande, BR-88040900 Florianopolis, SC - Brazil

^[3] Natl Acad Sci Belarus, Inst Nat Management, Minsk - Byelarus

^[4] UNICAMP SP, CAPESCA, NEPA, Rua Albert Einstein 291, BR-13083852 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: AMBIO; v. 50, n. 10, SI, p. 1851-1865, OCT 2021.
• Citações Web of Science: 0

Resumo

Tracking fish consumption could provide additional information on changes to fish stocks, one of the planet's main protein sources. We used data on seafood consumption in fishing villages in Brazil over time to test for changes in: species richness, diversity, and composition, fish size and trophic levels, consumption of endangered species, and functional diversity (namely, species with different behavioral and habitat preferences). Our results demonstrate the potential to include this additional data source to complement fisheries data, especially in data-poor countries. With respect to Brazil specifically, we identified a decrease in both the average trophic level and size of the species consumed. While the consumption of endangered species had always been low, most of these species changed over time, thereby suggesting that many, especially elasmobranchs, may have become rare on the plates. Although it may be hard to fully isolate cultural changes from biodiversity changes when it comes to analyzing consumption data, by examining diets it is possible to identify aspects worth investigating further, such as, whether the decrease in dietary trophic levels mirrors a decrease in environmental trophic levels. In places where fisheries data are either inexistent or limited, diet track surveys, such as household expenditure programs, can help trace the changes caused by fisheries in stocks and habitats. (AU)

• Processo FAPESP: 18/22087-4 - Pesca de subsistência e segurança alimentar em comunidades pesqueiras costeiras e amazônicas
• Beneficiário: Alpina Begossi
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Brasil
• Processo FAPESP: 14/24994-8 - Comunidades pesqueiras da costa do Brasil: biologia e etnobiologia de espécies alvo
• Beneficiário: Alpina Begossi
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional
• Processo FAPESP: 14/16939-7 - Pescadores & garoupas [Epinephelus marginatus]: ecologia, etnoecologia e segurança alimentar na costa brasileira
• Beneficiário: Alpina Begossi
• Modalidade de apoio: Auxílio à Pesquisa - Temático