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

• Main Authors: Baker, E, Odenthal, B, Walkusz, W, Sifred, T, Ríos, P, Tompkins, G, Kenchington, E
• Format: Report
• Language: unknown
• Published: Zenodo 2019
• Subjects: Porifera; trawl surveys; Baffin Bay; Davis Strait; Hudson Strait; taxonomy; European Union EU; Horizon 2020; Grant Agreement No 679849; Deep-sea Sponge Grounds Ecosystems of the North Atlantic an integrated approach towards their preservation and sustainable exploitation; SponGES; Arctic; Baie de Baffin; Beazley; Canada; Détroit de Davis; Hudson; Paamiut; Baffin; Détroit d'Hudson; North Atlantic; Subarctic
• Online Access: https://dx.doi.org/10.5281/zenodo.2644920; https://zenodo.org/record/2644920

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 (DFO) in Baffin Bay, Davis Strait and portions of Hudson Strait were taxonomically examined. In total ~2500 specimens were identified, comprising over 100 sponge taxa. Sponges from the order Poecilosclerida comprised nearly half the identified species. This report summarizes sponges from the family Dendoricellidae (class Demospongiae, subclass Heteroscleromorpha, order Poecilosclerida) and family Tedaniidae (class Demospongiae, subclass Heteroscleromorpha, order Poecilosclerida). A total of six species are described, from genera Dendoricella (Dendoricellidae) and Tedania (Tedaniidae). These species are: Dendoricella flabelliformis , Dendoricella cf. flabelliformis , Dendoricella aff. flabelliformis , Dendoricella sp. 1, Tedania (Tedania) suctoria , and Tedania sp. 1. Descriptions include morphological and spicule descriptions, spicule dimensions, and taxonomic discussion. Les éponges (phylum Porifera) sont des animaux filtreurs benthiques qui jouent un rôle important dans le cycle des éléments nutritifs et la production d’habitats dans les profondeurs de la mer. Les éponges recueillies au cours des relevés plurispécifiques annuels au chalut entre 2010 et 2014 effectués par Pêches et Océans Canada (MPO) dans la baie de Baffin, le détroit de Davis et certaines parties du détroit d'Hudson ont été examinées sur le plan taxonomique. Au total, 2 500 spécimens ont été identifiés, et ceux-ci représentaient plus de 100 taxons d'éponges. Presque la moitié des espèces recensées étaient de l'ordre Poecilosclerida. Le présent rapport fait état des éponges appartenant à la famille Dendoricellidae (classe Demospongiae, sous-classe Heteroscleromorpha, ordre Poecilosclerida) et à la famille Tedaniidae (classe Demospongiae, sous-classe Heteroscleromorpha, ordre Poecilosclerida). En tout, six espèces des genres Dendoricella (Dendoricellidae) et Tedania (Tedaniidae) sont décrites. Il s'agit des suivantes : Dendoricella flabelliformis, Dendoricella cf. flabelliformis, Dendoricella aff. flabelliformis, Dendoricella sp. 1, Tedania (Tedania) suctoria et Tedania sp. 1. Les descriptions portent sur les éléments morphologiques et comprennent des détails descriptifs et dimensionnels sur les spicules ainsi que des observations sur les aspects taxinomiques. : 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. This report was produced through the project "SponGES - Deep-sea Sponge Grounds Ecosystems of the North Atlantic: an integrated approach towards their preservation and sustainable exploitation" program, under H2020 - the EU Framework Programme for Research and Innovation (Grant Agreement no. 679849). We thank Cam Lirette (BIO) for his help in organizing the data and producing map templates to produce figures from, Emilie Pothier for ArcGIS assistance, and Lindsay Beazley and Dr. Javier Murillo for their review of an earlier draft of this manuscript.