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Title: Evidence of genetic segregation among meagre (Argyrosomus regius) Atlantic spawning areas
Authors: Almeida, R.
Mateus, C.S.
Alves, M.J.
Marques, J.P.
Pereira, J.
Prista, N.
Cabral, H.
Almeida, P.R.
Quintella, B.R.
Keywords: Atlantic Ocean
spawning areas
demographic history
gene flow
population structure
stock management
Issue Date: Dec-2022
Publisher: MDPI
Citation: Almeida, R.; C.S. Mateus; M.J. Alves; J.P. Marques; J. Pereira; N. Prista; H. Cabral; P.R. Almeida & B.R. Quintella (2022). Evidence of genetic segregation among meagre (Argyrosomus regius) Atlantic spawning areas. Journal of Marine Science and Enginering, 10, 1843.
Abstract: The meagre Argyrosomus regius, one of the largest sciaenidae in the world, is a valuable resource for fisheries and aquaculture. Despite its socioeconomic relevance, knowledge about population dynamics and wild stocks is still scarce, and conservation risks are associated with overexploitation. Two genetic distinct groups, one in the North Atlantic Ocean and one in the eastern Mediterranean Sea, were identified by previous studies. However, little is known about the genetic structure of the Atlantic group, where four important spawning areas have been identified. To assess if each spawning area is an independent breeding unit, the genetic diversity, populational structure, and demographic history of A. regius along the North–East and Eastern Central Atlantic coast were analyzed, using 15 microsatellite loci. Results corroborate the hypothesis tested, suggesting four genetic groups: a first group encompassing individuals from the Gironde spawning area, a second group encompassing individuals from the Tagus spawning area, a third group corresponding to individuals captured in the Algarve region, and a forth group gathering individuals from Morocco and Mauritania. This study reveals the need for specific fisheries management plans considering genetic structure information, and highlights the need for international cooperation.
Type: article
Appears in Collections:BIO - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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