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Stock structure of Trachurus picturatus from the NE Atlantic and Mediterranean Sea using microsatellite DNA markers

2019; Frontiers Media; Volume: 6; Linguagem: Inglês

10.3389/conf.fmars.2019.07.00054

2296-7745

Cláudia Moreira, PabloPablo Presa, Alberto Teodorico Correia, Paulo Vaz‐Pires, Elsa Froufe,

Ichthyology and Marine Biology

Event Abstract Back to Event Stock structure of Trachurus picturatus from the NE Atlantic and Mediterranean Sea using microsatellite DNA markers Cláudia Moreira1, 2, Pablo Presa3, Alberto T. Correia2, 4, Paulo Vaz-Pires1, 2 and Elsa Froufe2* 1 Abel Salazar Institute of Biomedical Sciences, University of Porto, Portugal 2 Interdisciplinary Center for Marine and Environmental Research, Faculty of Sciences, University of Porto, Portugal 3 University of Vigo, Fac. Biología, ReXenMar Laboratory-ECIMAT, Spain 4 Faculdade de Ciências da Saúde da Universidade Fernando Pessoa, Portugal The blue jack mackerel Trachurus picturatus is a commercially important species in the Macaronesia region, however, its population structure and connectivity patterns remain controversial. Even though the stock status of this species across the North-east Atlantic is unclear, precautionary actions to preserve this fishery are recommendable (FAO 2018; ICES 2018). This is especially significant because landings of the T. picturatus in Madeira have suffered a drammatic decrease in the last years, i.e. from 617 t to 263 t (INE 2018). Landing fluctuations are usually associated with changes in fishing efforts (ICES 2018) but can also be driven by natural variations in abundance and/or recruitment (Menezes et al., 2006; Vasconcelos et al., 2018). The sustainable management of fisheries requires knowledge on the genetic background of the harvested population, its structure and its delineation. This study is the first one employing microsatellite markers on T. picturatus to infer the structure and migration dynamics among fishing grounds sampled in 2013 and 2016 in the NE Atlantic and the Mediterranean Sea. Individuals were collected at six sampling locations in the NE Atlantic - Azores, Madeira, Canaries and Portugal mainland (Matosinhos, Peniche and Portimão) - and one location in the Mediterranean Sea - Sicily. Results of this first assessment revealed a high spatio-temporal conservation of gene diversity and a lack of genetic structure across the species distribution. Therefore, current data suggest that the fishery is composed of a metapopulation exhibiting high gene flow among fishing grounds. The migration rates inferred suggest a high bidirectional migration rate (m  0.30) across the NE Atlantic longitudinal corridor. A directional property of the connectivity pattern is that migration proceeds from Macaronesia to Portugal mainland in autumn-winter while the way back seems to occur in spring-summer. These results are congruent with previously published mtDNA data (Moreira et al, 2019a) but contrast with the subpopulation units scenario identified in the region with ecological approaches, such as morphometrics (Vasconcelos et al. 2018), parasites (Costa et al., 2012, 2013; Hermida et al., 2015; Vasconcelos et al., 2017) and otolith microchemistry (Vasconcelos et al., 2018; Moreira et al., 2018, 2019b). Likely, the genetic scenario observed among subpopulations of this pelagic species reflects evolutionary time-scales and depicts a more conservative views than those based on parasitic, morphometric, chemical or tagging studies (Elliot et al., 1995; Kasapidis and Magoulas 2008) which provide information on the environments experienced by an individual over its lifetime (Woods et al., 2010). For the sustainability of this fishery, future works should focus on fully characterizing other properties of the connectivity pattern of this species such as the precise migratory corridors that allow the closure of the species life cycle. Acknowledgements Work was supported by FCT (SFRH/BD/111133/2015 to CM), NORTE-01-0145-FEDER-000035 (MARINFO) and the Strategic Funding UID/Multi/04423/2019. Pablo Presa was supported by the IACOBUS INTERREG program 2018. The authors are grateful to H. Cabral Team (BIOCONNECT, PTDC/MAR/117084/2010) and wish to thank M. Felicio (IPMA Matosinhos), A. Paixão (IMAS/DOP), J. Delgado (DRP-M/SRARN), F. Tuya (IU-ECOAQUA, ULPGC), I. Bertocci and G. Milisenda (CNR-IAMC UOS Mazara del Vallo). References Costa, G., Melo-Moreira, E., Pinheiro de Carvalho, M.A.A. (2012) Helminth parasites of the oceanic horse mackerel Trachurus picturatus Bowdich 1825 (Pisces: Carangidae) from Madeira Island, Atlantic Ocean, Portugal. Journal of Helminthology 86, 368-372. Costa, G., Santamaria, M. T. G., Vasconcelos, J., Perera, C.B., Melo-Moreira, E. (2013) Endoparasites of Trachurus picturatus (Pisces: Carangidae) from the Madeira and Canary Islands: Selecting parasites for use as tags. Scientia Marina 77, 61-68. Elliott, N.G., Haskard, K., Koslow, J.A. (1995) Morphometric analysis of orange roughy (Hoplostethus atlanticus) off the continental slope of southern Australia. Journal of Fish Biology 46, 202-220. FAO (2018) The State of World Fisheries and Aquaculture 2018 - Meeting the sustainable development goals. Rome. Hermida, M., Pereira, A., Correia, A.T., Cruz, C., Saraiva, A. (2015) Metazoan parasites of the blue jack mackerel Trachurus picturatus (Perciformes: Carangidae) from Portuguese mainland waters. Journal of Helminthology 90, 410-416. ICES (2018) Report of the Working Group on Southern Horse Mackerel, Anchovy and Sardine (WGHANSA), 26-30 June 2018, Lisbon, Portugal. ICES CM 2018/ACOM:17 Report. 639 pp. INE-Instituto Nacional de Estatística, I.P. (2018) Estatísticas da Pesca 2017. Lisboa-Portugal. Kasapidis, P., Magoulas, A. (2008) Development and application of microsatellite markers to address the population structure of the horse mackerel Trachurus trachurus. Fisheries Research 89, 132-135. Menezes, G.M., Sigler, M.F., Silva, H.M., Pinho, M.R. (2006) Structure and zonation of demersal fish assemblages off the Azores Archipelago (mid-Atlantic). Marine Ecology Progress Series 324, 241-260. Moreira, C., Froufe, E., Sial, A.N., Caeiro, A., Vaz-Pires, P., Correia, A.T. (2018) Population structure of the blue jack mackerel (Trachurus picturatus) in the NE Atlantic inferred from otolith microchemistry. Fisheries Research 197, 113-122. Moreira, C., Correia, A.T., Vaz-Pires, P., Froufe, E. (2019a) Genetic diversity and population structure of the blue jack mackerel Trachurus picturatus across its western distribution. Journal of Fish Biology, 1-7. Moreira, C., Froufe, E., Vaz-Pires, P., Correia, A.T. (2019b) Otolith shape analysis as a tool to infer the population structure of the blue jack mackerel, Trachurus picturatus, in the NE Atlantic. Fisheries Research 209, 40-48. Vasconcelos, J., Hermida, M., Saraiva, A., González, J.A., Gordo, L.S. (2017) The use of parasites as biological tags for stock identification of blue jack mackerel, Trachurus picturatus, in the North-eastern Atlantic. Fisheries Research 193, 1-6. Vasconcelos, J., Vieira, A.R., Sequeira, V., González, J.A., Kaufmann, M., Gordo, L.S. (2018) Identifying populations of the blue jack mackerel (Trachurus picturatus) in the Northeast Atlantic by using geometric morphometrics and otolith shape analysis. Fishery Bulletin 116, 81-92. Woods, R.J., Macdonald, J.I., Crook, D.A., Schmidt, D.J., Hughes, J.M. (2010) Contemporary and historical patterns of connectivity among populations of an inland river fish species inferred from genetics and otolith chemistry. Canadian Journal of Fisheries and Aquatic Sciences 67, 1098-1115. Keywords: Blue jack mackerel, Fishery sustainability, Molecular markers, Migration patterns, Metapopulation Conference: XVI European Congress of Ichthyology, Lausanne, Switzerland, 2 Sep - 6 Sep, 2019. Presentation Type: Poster Topic: GENETICS, GENOMICS AND PHYSIOLOGY Citation: Moreira C, Presa P, Correia AT, Vaz-Pires P and Froufe E (2019). Stock structure of Trachurus picturatus from the NE Atlantic and Mediterranean Sea using microsatellite DNA markers. Front. Mar. Sci. Conference Abstract: XVI European Congress of Ichthyology. doi: 10.3389/conf.fmars.2019.07.00054 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 20 May 2019; Published Online: 14 Aug 2019. * Correspondence: Mx. Elsa Froufe, Interdisciplinary Center for Marine and Environmental Research, Faculty of Sciences, University of Porto, Matosinhos, 4450-208, Portugal, elsafroufe@gmail.com Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. 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