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Demosponges from Ascension Island with a description of nine new species

Published online by Cambridge University Press:  04 November 2021

Claire Goodwin*
Affiliation:
Huntsman Marine Science Centre, 1 Lower Campus Road, New Brunswick, E5B 3A3, Canada Department of Biological Sciences, University of New Brunswick Saint John, 100 Tucker Park Road, Saint John, New Brunswick, E2L 4L5, Canada
Judith Brown
Affiliation:
Shallow Marine Surveys Group, 2 Philomel Place, Stanley FIQQ 1ZZ, Falkland Islands Limpet Blue Ltd, Killin FK21 8UJ, Scotland, UK
Rachel Downey
Affiliation:
Fenner School of Environment & Society, Australian National University, Linnaeus Way, Acton, ACT 2601, Canberra, Australia
Nhu Trieu
Affiliation:
Microscopy and Microanalysis Facility, University of New Brunswick Fredericton, 3 Bailey Drive, P.O. Box 4400, Fredericton, New Brunswick, Canada, E3B 5A3
Paul E. Brewin
Affiliation:
Shallow Marine Surveys Group, 2 Philomel Place, Stanley FIQQ 1ZZ, Falkland Islands South Atlantic Environmental Research Institute, PO Box 609, Stanley Cottage, Ross Road, Stanley FIQQ 1ZZ, Falkland Islands
Paul Brickle
Affiliation:
Shallow Marine Surveys Group, 2 Philomel Place, Stanley FIQQ 1ZZ, Falkland Islands South Atlantic Environmental Research Institute, PO Box 609, Stanley Cottage, Ross Road, Stanley FIQQ 1ZZ, Falkland Islands School of Biological Sciences (Zoology), University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen AB24 2TZ, UK
*
Author for correspondence: Claire Goodwin, E-mail: claire.goodwin@huntsmanmarine.ca

Abstract

We surveyed the shallow-water sponges of Ascension Island using scuba diving. In total, we collected 58 sponge specimens from 17 locations at depths of 0.5–30 m. In addition, we compiled historical records of sponges. We describe nine species new to science: Niphates verityae sp. nov., Petrosia (Petrosia) ernesti sp. nov., Monanchora downesae sp. nov., Svenzea weberorum sp. nov., Erylus williamsae sp. nov., Ircinia nolanae sp. nov., Ircinia richardsoni sp. nov., Ircinia simae sp. nov. and Chondrosia browningorum sp. nov. We provide molecular sequences for three of the new species. We have added 50% to the number of known species and added two new genera and one family to the known Ascension Island sponge fauna. Twenty-six species, from 16 genera, and 13 families, are now reported from Ascension's shallow waters. Many of these may be endemic to the island. We discuss the biogeographic affinities of Ascension Island and emphasize the need for additional survey of the sponge fauna of remote islands such as Ascension.

Type
Research Article
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press on behalf of Marine Biological Association of the United Kingdom

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