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Home / Bulletin of Marine Science, Volume 96, Number 1

A new species of Euplectellidae (Porifera: Hexactinellida: Lyssacinosida) from the northwestern Pacific Ocean

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A new species of the deep-sea sponge Dictyaulus is described from materials collected by the research vessel Ke Xue during its three cruises between 2014 and 2017 to survey seamount biodiversity. The newly described species was one of the only two sponge species found living on all three seamounts investigated. It may be a common species living on seamounts in the tropical western Pacific. All seven known species of Dictyaulus Schulze, 1896 contain floricomes, but each species has special spicules. The new species is easily distinguishable by the presence of discasters, which have previously been reported only in Dictyaulus starmeri Tabachnick and Lévi, 2004, but the latter species possesses sigmatocomes, which are not present in the new species. The five specimens collected display large variation in size, with total lengths from 55 to 610 mm. The specimens differ in the abundance of microsclere types which we consider to be caused not only by differences of their life history stages but also to a greater extent by differences in their living environments.

Document Type: Research Article

Affiliations: 1: Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China; Graduate University, Chinese Academy of Sciences, Beijing 100039, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China;, Email: [email protected] 2: Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China; Graduate University, Chinese Academy of Sciences, Beijing 100039, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China

Publication date: 01 January 2020

This article was made available online on 19 June 2019 as a Fast Track article with title: "A new species of Euplectellidae (Porifera: Hexactinellida: Lyssacinosida) from the northwestern Pacific Ocean".

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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