Filling gaps in the knowledge of grouper, especially Comb grouper (Mycteroperca acutirostris) (2013-2020) (Copacabana fishery, Rio de Janeiro, Brazil)
Revista Ambiente E Água
Filling gaps in the knowledge of grouper, especially Comb grouper (Mycteroperca acutirostris) (2013-2020) (Copacabana fishery, Rio de Janeiro, Brazil)
Autor Correspondente: Alpina Begossi | [email protected]
Palavras-chave: comb grouper; fisheries; genetics; Mycteroperca
Resumos Cadastrados
Resumo Português:
Existem lacunas em nosso conhecimento sobre a biologia de peixes importantes no consumo em países tropicais. A pesca em pequena escala é difícil de estudar e regulamentar, especialmente em países sem monitoramento sistemático de espécies. Em Copacabana (Rio de Janeiro) observamos 490 indivíduos de badejo (Mycteropeca acutirostris), nas pescarias, em 2013-2014 e 2018-2020. O kg médio dos badejos pescados foi de 1,36kg (n=466 indivíduos). Observou-se um padrão decrescente de capturas para o badejo. Portanto, considerando que a tecnologia pesqueira e o número de pescadores permaneceram os mesmos, a aparente diminuição do badejo necessita ser investigada mais detalhadamente. Os resultados desse estudo fornecem informações sobre a reprodução do badejo, com maior época de desova na primavera (setembro-dezembro) e desova adicional durante o mês de abril, no sudeste do Brasil. Análises genéticas sobre amostras de 96 badejos obtidos ao longo da costa do Brasil foram conduzidas. A informação genética obtida para as espécies permitiu-nos determinar a proximidade genética relativa de M. acutirostris e Mycteroperca bonaci e obter informações úteis para a aquicultura e conservação. Os objetivos deste estudo são: a) obter dados sobre a atividade pesqueira (desembarque de capturas) de badejo (Comb grouper, Mycteroperca acutirostris) em Copacabana, Posto 6; b) verificar o período reprodutivo dos badejos capturados nas pescarias, ao longo do ano; c) desenvolver um grande número de marcadores SNPs, que podem ser úteis para estudos de populações de garoupa (Mycteroperca e Epinephelus); d) obter dados sobre o preço do badejo. Existem muitas lacunas no conhecimento sobre M. acutirostris; este estudo pretende adicionar dados sobre biologia e ecologia do badejo e ajudar a subsidiar objetivos de conservação.
Palavras-chave: badejo; comunidades pesqueiras; genética; Mycteroperca
Resumo Inglês:
There are gaps in our knowledge of important fish consumed by people in tropical countries. Small-scale fisheries are difficult to regulate, especially in countries with no species monitoring. At Copacabana (Rio de Janeiro), we observed 490 individuals of badejo (Comb grouper) (Mycteropeca acutirostris in 2013-2014 and in 2018-2020. The average catch was 1.36 kg (n=466 individuals). A pattern of decreasing catches was observed for Comb grouper. Therefore, provided that the fishing gear and the number of fish have remained the same, the apparent decrease in Comb grouper needs to be further investigated. The results provide information about the major spawning season, around spring (September-December) with additional spawning during April. Genetic analyses in samples from 96 grouper obtained along the coast of Brazil were conducted. The Single Nucleotide Polymorphism (SNP) loci obtained for grouper species enabled us to determine the relative genetic proximity of M. acutirostris and Mycteroperca bonaci, information that can be useful for aquaculture and conservation. The objectives of this study were: a) to obtain data about the fishing activity (catch landings) of Comb groupers at Copacabana, Posto 6; b) to verify the reproductive period of Comb grouper, throughout the year, through the catches from the fishery; c) to develop a large numbers of SNP markers, which can be useful to studies about grouper populations (Mycteroperca and Epinephelus); and, d) to obtain data on the price of the Comb grouper. This study contributes data on the fishery and on the biology and ecology of groupers, and further contributes to conservation efforts.
Keywords: comb grouper; fisheries; genetics; Mycteroperca
Resumo Espanhol:
There are gaps in our knowledge of important fish consumed by people in tropical countries. Small-scale fisheries are difficult to regulate, especially in countries with no species monitoring. At Copacabana (Rio de Janeiro), we observed 490 individuals of badejo (Comb grouper) (Mycteropeca acutirostris in 2013-2014 and in 2018-2020. The average catch was 1.36 kg (n=466 individuals). A pattern of decreasing catches was observed for Comb grouper. Therefore, provided that the fishing gear and the number of fish have remained the same, the apparent decrease in Comb grouper needs to be further investigated. The results provide information about the major spawning season, around spring (September-December) with additional spawning during April. Genetic analyses in samples from 96 grouper obtained along the coast of Brazil were conducted. The Single Nucleotide Polymorphism (SNP) loci obtained for grouper species enabled us to determine the relative genetic proximity of M. acutirostris and Mycteroperca bonaci, information that can be useful for aquaculture and conservation. The objectives of this study were: a) to obtain data about the fishing activity (catch landings) of Comb groupers at Copacabana, Posto 6; b) to verify the reproductive period of Comb grouper, throughout the year, through the catches from the fishery; c) to develop a large numbers of SNP markers, which can be useful to studies about grouper populations (Mycteroperca and Epinephelus); and, d) to obtain data on the price of the Comb grouper. This study contributes data on the fishery and on the biology and ecology of groupers, and further contributes to conservation efforts.
Keywords: comb grouper; fisheries; genetics; Mycteroperca
