Event Abstract Back to Event Free living marine nematodes from A Cabana cove in Ría de Ferrol, Galicia (NW Iberian Peninsula) Mario Ayora1, 2*, Diego Carreira2, 3 and Celia Besteiro1, 2 1 Department of Zoology, Genetics and Physical Anthropology, Faculty of Biology, University of Santiago de Compostela, Spain 2 Marine Biology Station of A Graña, University of Santiago de Compostela, Spain 3 Centre of Molecular and Environmental Biology, Department of Biology, University of Minho, Portugal Ría de Ferrol is one of the Galician Rías Altas, in the province of A Coruña and is located at the mouth of the Xuvia river. It is considered as a goodful place for the marine wildlife due to its coverage and hydrodynamic conditions, that produces plenty of different habitats. A Cabana cove was formed by a granite tidal dike of 51 m length and 15 m width, concealing the area from the strong north winds and increasing the marine richness. The study area is located in the inner third part of the Ría de Ferrol, on its northern margin. This area is mainly formed by sandy mud sediments. There is a mechanical alteration of the sediment in this area due to shell fishing, as well as a split of domestic waste water in the cove. This study was conducted to determine the diversity of free living marine nematodes in A Cabana cove. The studied material consists of one sample with 100 cc. sediment that was taken in A Cabana cove (43º29’12”N; 08º15’02”W) using a PVC core. The meiofauna present in the sample was treated with MgCl2 before extraction. After that treatment, it was washed with filtered tap water through a sieve of 50 μm. The nematodes present were picked up from the rest of the sediment and preserved in flasks using ethanol 70%. Nematodes were mounted on microscope slides to their study. An initial taxonomic list of nematodes was constructed based on the presence of species. In A Cabana cove, a total of 1612 specimens were found, belonging to 11 different families and 13 different genera. The order Desmodorida was best represented with 832 specimens from 2 genus followed by the order Araeolaimida with 256 specimens from 3 genus. Species belonging to the orders Chromadorida, Monhysterida and Enoplida were also recorded. The dominance of genera Spirinia was remarkable, with 828 specimens present in the sample. Genera such as Pareurystomina, Metoncholaimus, Thalassironus, Odontophora, Paracomesoma, Sabatieria, Chromadora, Chromadorella, Chromadorita, Monoposthia, Siphonolaimus, and Linhomoeus were also present. Moreover, there were 135 specimens that could not be identified and 206 were deteriorated and not identifiable. From the reviewed literature, 2 new species of free living marine nematodes have been reported for the first time in Galician waters: Thalassironus britannicus (Fig.1) and Paracomesoma dubium (Fig.2). The high number of nematodes that are deposit-feeders either selective and non-selective, representing the 68.5% of the sample, were related to the influence of the split of domestic waste water in the zone. Due to this split, the diversity of nematodes is also low in comparison to areas with similar conditions. Figure 1 Figure 2 Keywords: Taxonomy, Free living marine nematodes, Nematoda, Galicia, A Cabana 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: Ayora M, Carreira D and Besteiro C (2019). Free living marine nematodes from A Cabana cove in Ría de Ferrol, Galicia (NW Iberian Peninsula). Front. Mar. Sci. Conference Abstract: XX Iberian Symposium on Marine Biology Studies (SIEBM XX) . doi: 10.3389/conf.fmars.2019.08.00017 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: 21 Aug 2019; Published Online: 27 Sep 2019. * Correspondence: Mx. Mario Ayora, Department of Zoology, Genetics and Physical Anthropology, Faculty of Biology, University of Santiago de Compostela, Lugo, 27002, Spain, mario.ayora@usc.es 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 Mario Ayora Diego Carreira Celia Besteiro Google Mario Ayora Diego Carreira Celia Besteiro Google Scholar Mario Ayora Diego Carreira Celia Besteiro PubMed Mario Ayora Diego Carreira Celia Besteiro 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.