Effects of harvesting on annelid assemblages associated with mussel beds

Abstract

Event Abstract Back to Event Effects of harvesting on annelid assemblages associated with mussel beds Puri Veiga1*, Leandro Sampaio1, Catarina R. Oliveira1, Juan Moreira Da Rocha2, Jesus S. Troncoso3 and Marcos Rubal1 1 Interdisciplinary Center for Marine and Environmental Research, Abel Salazar Institute of Biomedical Sciences, University of Porto, Portugal 2 Autonomous University of Madrid, Spain 3 University of Vigo, Spain The mussel, Mytilus galloprovincialis Lamarck, 1819 is an ecologically and economically relevant species on European coasts. It is very abundant in the Atlantic intertidal fringe of the Iberian Peninsula where is harvested in natural systems and/or cultured intensively on rafts. Aquaculture production is dependent on their abundance in natural environments because juveniles are collected in rocky shores and then attached to ropes on rafts. Moreover, it provides habitat for many species, enhancing local biodiversity. The aim of this study was to explore effects of harvesting on the annelid assemblage associated with mussels. To achieve this, two rocky shores, where mussels are intensively harvested, were selected in Galicia (NW Iberian Peninsula). At each shore, two different sites were considered; at each site, 4 replicates (10x10cm) of harvested mussel clumps and 4 replicates of non-harvested clumps (control) were collected. Size and number of mussels at each replicate were compared between treatments (harvested-control). Moreover, annelids at each replicate were identified to species level. A total of 1351 individuals and 27 species were found. Abundance, taxon richness, Margalef index and assemblage composition were compared between treatments by means of univariate and multivariate techniques. Results pointed out that harvested clumps showed a lower and more homogenous mussel size than control clumps, as expected. Regarding annelids, the interaction between treatment and site was significant for the multivariate assemblage structure and for the total abundance. Therefore, the effect of harvesting is dependent on the spatial scale considered. Acknowledgements This research was developed under the Project No. 30181, co-financed by COMPETE 2020, Portugal 2020 and the European Union through the ERDF, and by FCT through national funds. Keywords: Mytilus galloprovincialis L., Harvesting, Annelids, Iberian Peninsula, Rocky shores Conference: XX Iberian Symposium on Marine Biology Studies (SIEBM XX) , Braga, Portugal, 9 Sep - 12 Sep, 2019. Presentation Type: Poster Presentation Topic: Ecology, Biodiversity and Vulnerable Ecosystems Citation: Veiga P, Sampaio L, Oliveira CR, Moreira Da Rocha J, Troncoso JS and Rubal M (2019). Effects of harvesting on annelid assemblages associated with mussel beds. Front. Mar. Sci. Conference Abstract: XX Iberian Symposium on Marine Biology Studies (SIEBM XX) . doi: 10.3389/conf.fmars.2019.08.00078 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: 13 May 2019; Published Online: 27 Sep 2019. * Correspondence: Mx. Puri Veiga, Interdisciplinary Center for Marine and Environmental Research, Abel Salazar Institute of Biomedical Sciences, University of Porto, Matosinhos, 4450-208, Portugal, puri.sanchez@fc.up.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 Puri Veiga Leandro Sampaio Catarina R Oliveira Juan Moreira Da Rocha Jesus S Troncoso Marcos Rubal Google Puri Veiga Leandro Sampaio Catarina R Oliveira Juan Moreira Da Rocha Jesus S Troncoso Marcos Rubal Google Scholar Puri Veiga Leandro Sampaio Catarina R Oliveira Juan Moreira Da Rocha Jesus S Troncoso Marcos Rubal PubMed Puri Veiga Leandro Sampaio Catarina R Oliveira Juan Moreira Da Rocha Jesus S Troncoso Marcos Rubal 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.