Spatio-temporal distribution of leptostracans (Crustacea: Phyllocarida) at the Ensenada de Baiona (Galicia, NW Spain)

Abstract

Event Abstract Back to Event Spatio-temporal distribution of leptostracans (Crustacea: Phyllocarida) at the Ensenada de Baiona (Galicia, NW Spain) Juan Moreira1*, Marcos Rubal2, Puri Veiga2 and Jesus S. Troncoso3, 4 1 Universidad Autónoma de Madrid, Departamento de Biología, Spain 2 University of Porto, Laboratory of Coastal Biodiversity, Centre of Marine and Environmental Research (CIIMAR), Portugal 3 Universidade de Vigo, Departamento de Ecoloxía e Bioloxía Animal, Spain 4 Universidade de Vigo, ECIMAT, Estación de Ciencias Mariñas de Toralla, Spain Knowledge about the spatial distribution and temporal dynamics of leptostracan crustaceans (Phyllocarida) is still scarce. This is also true for European seas where other benthic taxa such as molluscs, polychaetes and several malacostracan crustaceans are comparatively better known. To date, nine species belonging to two genera within the Family Nebaliidae have been reported from the Iberian Peninsula (Moreira, 2015). In the Galician rías (NW Spain), the few ecological data available suggest that species are distributed according to the granulometric composition (Moreira et al., 2009). Here, we will test this hypothesis at the Ensenada de Baiona, which is located close to the mouth of the Ría de Vigo. This inlet shows a conspicuous gradient of sedimentary distribution, i. e. from gravel and coarse sand at the mouth to fine sand and mud at the innermost part. Furthermore, we tested whether leptostracan species show similar patterns of temporal dynamics to those of other benthic invertebrates. Quantitative sampling was done in 1995 and 2015 (spatial distribution) at 19 subtidal sites (gravel to mud) and from February 1996 to February 1997 at four subtidal sites (medium-fine sand to mud) (temporal dynamics). Five replicates samples were taken at each site/month with a Van Veen grab (total area: 0.28 m2). Granulometric composition and organic matter content was also determined for each site/month. Five species were found across the inlet, of which three belong to Nebalia Leach, 1814 and two to Sarsinebalia Dahl, 1985. Nebalia species were mostly found in fine sand and muddy sand while Sarsinebalia species were either restricted to coarse sand (S. cristoboi Moreira et al., 2003) or medium sand (S. urgorrii Moreira et al., 2003). On the other hand, Nebalia troncosoi Moreira et al., 2003 was found along the studied period in three sites corresponding to sandy sediments and absent in muddy sediments. Abundance did not show significant temporal variations; however, adult females were more frequent in late summer and autumn while males were scarcely found. In general, results supported the initial hypothesis but the generality of this pattern should be tested in other areas. Furthermore, future manipulative experiments testing hypotheses about competition and granulometric composition will be useful to truly understand the ecology of leptostracans in soft bottoms. References Moreira, J., 2015. Clase Malacostraca. Orden Leptostraca. Revista IDE@ - SEA, 83: 1–7. Moreira, J., Díaz-Agras, G., Candás, M., Pérez-Señarís, M., Urgorri, V., 2009. Leptostracans (Crustacea: Phyllocarida) from the Ría de Ferrol (Galicia, NW Iberian Peninsula) with description of a new species of Nebalia Leach, 1814. Scientia Marina, 73: 269-285. Keywords: NE Atlantic, Leptostraca, subtidal, sediment, distribution Conference: XIX Iberian Symposium on Marine Biology Studies, Porto, Portugal, 5 Sep - 9 Sep, 2016. Presentation Type: Poster Presentation Topic: 1. ECOLOGY, BIODIVERSITY AND VULNERABLE ECOSYSTEMS Citation: Moreira J, Rubal M, Veiga P and Troncoso JS (2016). Spatio-temporal distribution of leptostracans (Crustacea: Phyllocarida) at the Ensenada de Baiona (Galicia, NW Spain). Front. Mar. Sci. Conference Abstract: XIX Iberian Symposium on Marine Biology Studies. doi: 10.3389/conf.FMARS.2016.05.00120 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: 29 Apr 2016; Published Online: 03 Sep 2016. * Correspondence: Dr. Juan Moreira, Universidad Autónoma de Madrid, Departamento de Biología, Madrid, E-28049, Spain, juan.moreira@uam.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 Juan Moreira Marcos Rubal Puri Veiga Jesus S Troncoso Google Juan Moreira Marcos Rubal Puri Veiga Jesus S Troncoso Google Scholar Juan Moreira Marcos Rubal Puri Veiga Jesus S Troncoso PubMed Juan Moreira Marcos Rubal Puri Veiga Jesus S Troncoso 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.