Sponges from the 2010-2014 Paamiut Multispecies Trawl Surveys, Eastern Arctic and Subarctic: Class Demospongiae, Subclass Heteroscleromorpha, Order Poecilosclerida, Families Microcionidae, Acarnidae and Esperiopsidae

• Main Authors: Bouchard Marmen, Mariève, Tompkins, Gabrielle, Harrington, Nicole, Savard-Drouin, Alexis, Wells, Molly, Baker, Emily, Odenthal, Brighid, Walkusz, Wojciech, Siferd, Tim, Kenchington, Ellen
• Format: Report
• Language: unknown
• Published: Zenodo 2019
• Subjects: Trawl survey; Demospongiae; Taxonomy; European Union; Horizon 2020; Deep-sea Sponge Grounds Ecosystems of the North Atlantic An integrated approach towards their preservation and sustainable exploitation; SponGES; Grant Agreement No 679849; Arctic; Baffin Bay; Canada; Hudson; Hudson Strait; Goodwin; Baie de Baffin; Paamiut; Détroit de Davis; Beazley; Baffin; Davis Strait; North Atlantic; Subarctic
• Online Access: https://dx.doi.org/10.5281/zenodo.3831235; https://zenodo.org/record/3831235

ABSTRACT. Sponges (phylum Porifera) are benthic filter feeding animals that play an important role in nutrient cycling and habitat provision in the deep sea. Sponges collected between 2010 and 2014 during annual multispecies trawl surveys conducted by Fisheries and Oceans Canada in Baffin Bay, Davis Strait and portions of Hudson Strait were taxonomically examined. In total ~2500 specimens were identified, comprising ~100 known sponge taxa. Sponges from the order Poecilosclerida comprised nearly half of the identified species. Sponges from the poescilosclerid families Coelosphaeridae, Crellidae, Dendoricellidae, Myxillidae and Tedaniidae are described in previous reports. This report adds descriptions of eight sponge species from three poescilosclerid families: Microcionidae, Acarnidae and Esperiopsidae (class Demospongiae, subclass Heteroscleromorpha, order Poecilosclerida). Described species include Artemisina lundbecki, Artemisina arcigera, and Clathria ( Clathria ) barleei from the family Microcionidae, Iophon piceum and Iophon koltuni from the family Acarnidae, and Esperiopsis villosa, Esperiopsis sp. 1 , and Semisuberites cf. cribrosa from the family Esperiopsidae. Descriptions include physical description of the sponges, descriptions and dimensions of their spicules, and taxonomic discussion. RÉSUMÉ. Les éponges (phylum Porifera) sont des animaux filtreurs benthiques qui jouent un rôle important dans le cycle des éléments nutritifs et qui augmentent la disponibilité d’habitats benthiques en eaux profondes. Les éponges collectées au cours des relevés plurispécifiques annuels au chalut effectués entre 2010 et 2014 par Pêches et Océans Canada dans la baie de Baffin, le détroit de Davis et certaines portions du détroit d’Hudson ont été examinées sur le plan taxonomique. Au total, environ 2500 spécimens ont été identifiés, appartenant à ~100 taxons d’éponges connus. Presque la moitié des espèces recensées appartiennent à l’ordre Poecilosclerida. Parmi elles, les éponges des familles Coelosphaeridae, Crellidae, Dendoricellidae, Myxillidae et Tedaniidae ont été décrites dans nos précédents rapports. Ce présent rapport ajoute les descriptions de huit espèces d’éponges de trois familles de poecilosclérides: Microcionidae, Acarnidae et Esperiopsidae (classe Demospongiae, sous-classe Heteroscleromorpha, ordre Poecilosclerida). Les espèces décrites sont Artemisina lundbecki, Artemisina arcigera et Clathria ( Clathria ) barleei de la famille Microcionidae, Iophon piceum et Iophon koltuni de la famille Acarnidae, et Esperiopsis villosa, Esperiopsis sp. 1 et Semisuberites cf. cribrosa de la famille Esperiopsidae. Les descriptions comprennent la description physique des éponges, la description de leurs spicules incluant les dimensions de celles-ci, ainsi qu’une discussion taxonomique. : ACKNOWLEDGEMENTS. This project was funded by Fisheries and Oceans, Canada's International Governance Strategy (IGS) Research Fund to EK, through the project "Identification and Mapping through Predictive Modelling of Coldwater Coral and Sponge Species in the Sub-Arctic/Eastern Arctic" which ran from April 2014 to March 2017. Also, this research has been performed as a Canadian contribution to the SponGES project, which received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No. 679849. This document reflects only the authors' views and the Executive Agency for Small and Medium-sized Enterprises (EASME) is not responsible for any use that may be made of the information it contains. We are grateful for the support of Francisco Javier Murillo, Claire Goodwin and Curtis Dinn through our identification process for certain species. We also thank Cam Lirette (BIO) for his help in organizing the data and producing maps, and Lindsay Beazley and Francisco Javier Murillo for their review of an earlier draft of this manuscript.