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Issue: Vol. 4136 No. 3: 7 Jul. 2016
Type: Article
Published: 2016-07-07
DOI: 10.11646/zootaxa.4136.3.2
Page range: 433–460
Abstract views: 129
PDF downloaded: 1

A new species of lithistid sponge hiding within the Isabella mirabilis species complex (Porifera: Demospongiae: Tetractinellida) from seamounts of the Norfolk Ridge

Queensland Museum, PO Box 3300, South Brisbane 4101, Brisbane, Queensland, Australia
Dept. of Earth and Environmental Sciences and GeoBio-Center, Ludwig-Maximilians-Universität München, Richard-Wagner-Straße 10, 80333 München, Germany
Queensland Museum, PO Box 3300, South Brisbane 4101, Brisbane, Queensland, Australia Eskitis Institute for Drug Discovery, Griffith University, Brisbane 4111, Queensland, Australia
Queensland Museum, PO Box 3300, South Brisbane 4101, Brisbane, Queensland, Australia Eskitis Institute for Drug Discovery, Griffith University, Brisbane 4111, Queensland, Australia
Porifera rock sponges deep-sea cryptic species new species

Abstract

A population level study of the lithistid (‘rock’) sponge, Isabella mirabilis, revealed a new species, Isabella tanoa sp. nov., living on five seamounts on the Norfolk Ridge, SW Pacific, and representing the third species to be discovered since the genus was first described in 2005. Comparisons between the three species showed significant differences in morphological characters that corresponded to differences in their respective CO1 barcoding sequences. Conversely, three of the four genotypes of Isabella mirabilis remain unresolved using morphological markers.

 

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