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: 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; Baie de Baffin; Canada; Détroit de Davis; Hudson; Hudson Strait; Paamiut; Baffin; Davis Strait; North Atlantic; Subarctic
• Online Access: https://zenodo.org/record/3831235; https://doi.org/10.5281/zenodo.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, ...