Reproductive characteristics of European anchovy, Engraulis encrasicolus (L.), off Western Iberia

Event Abstract Back to Event Reproductive characteristics of European anchovy, Engraulis encrasicolus (L.), off Western Iberia Ana M. Costa1*, Cristina Nunes1, Diana Feijó1, Raquel Milhazes1, Andreia V. Silva1, Maria D. Silva1, Eduardo Soares1 and Susana Garrido1 1 Portuguese Institute of Ocean and Atmosphere (IPMA), Portugal European anchovy, Engraulis encrasicolus (L.), has exponentially increased its abundance off the Western Iberia in recent years to maximum historical levels. The stock component was assessed by ICES for the first time during 2018, but the biological data of the species in this area is very scarce due to the low abundance in the past. The correct maturity stage is crucial to an accurate calculation of maturity ogives (and therefore of the SSB). Misclassification of immature and/or resting (mature) individuals will lead to a sub- or overestimation of the proportion of these maturity stages and consequently the spawning stock biomass. In this work, samples of European anchovy were monthly collected in the western Iberia during 2018 and 2019. Histological sections of male and female gonads were analysed in order to i) describe the seasonal reproductive activity of the species and ii) microscopically identify immature from resting stages. Macroscopic and microscopic maturity ogives are also presented and its implication in estimating the spawning biomass is evaluated. Acknowledgements Samples were obtained within the framework of the National Biological Sampling Program (PNAB, EU/DCF). Thanks are due to all colleagues involved in the biological sampling and in the histological processing. Keywords: European anchovy (Engraulis encrasicolus), Maturity stages, Histology, Maturity ogive, Reproductive season, Western Iberia Conference: XX Iberian Symposium on Marine Biology Studies (SIEBM XX) , Braga, Portugal, 9 Sep - 12 Sep, 2019. Presentation Type: Poster Presentation Topic: Fisheries, Aquaculture and Biotechnology Citation: Costa AM, Nunes C, Feijó D, Milhazes R, Silva AV, Silva MD, Soares E and Garrido S (2019). Reproductive characteristics of European anchovy, Engraulis encrasicolus (L.), off Western Iberia. Front. Mar. Sci. Conference Abstract: XX Iberian Symposium on Marine Biology Studies (SIEBM XX) . doi: 10.3389/conf.fmars.2019.08.00140 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: 17 May 2019; Published Online: 27 Sep 2019. * Correspondence: Mx. Ana M Costa, Portuguese Institute of Ocean and Atmosphere (IPMA), Lisbon, Portugal, amcosta@ipma.pt Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Ana M Costa Cristina Nunes Diana Feijó Raquel Milhazes Andreia V Silva Maria D Silva Eduardo Soares Susana Garrido Google Ana M Costa Cristina Nunes Diana Feijó Raquel Milhazes Andreia V Silva Maria D Silva Eduardo Soares Susana Garrido Google Scholar Ana M Costa Cristina Nunes Diana Feijó Raquel Milhazes Andreia V Silva Maria D Silva Eduardo Soares Susana Garrido PubMed Ana M Costa Cristina Nunes Diana Feijó Raquel Milhazes Andreia V Silva Maria D Silva Eduardo Soares Susana Garrido Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.