A new deep-water Tethya (Porifera, Tethyida, Tethyidae) from the Great Australian Bight and an updated Tethyida phylogeny
A new species of Tethya Lamarck, 1815 is described from a depth of 1000 m on the continental slope of the Great Australian Bight (GAB), southern Australia. The GAB slope was explored as part of systematic benthic surveys to understand unexplored communities in the light of current oil and gas explor...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Consortium of European Natural History Museums
2019-06-01
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| Series: | European Journal of Taxonomy |
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| Online Access: | https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/707 |
| _version_ | 1818724292672618496 |
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| author | Shirley J. Sorokin Merrick G. Ekins Qi Yang Paco Cárdenas |
| author_facet | Shirley J. Sorokin Merrick G. Ekins Qi Yang Paco Cárdenas |
| author_sort | Shirley J. Sorokin |
| collection | DOAJ |
| description | A new species of Tethya Lamarck, 1815 is described from a depth of 1000 m on the continental slope of the Great Australian Bight (GAB), southern Australia. The GAB slope was explored as part of systematic benthic surveys to understand unexplored communities in the light of current oil and gas exploration activity in the area. Tethya irisae sp. nov. was present at 1000 m in six of eight longitudinal depth surveys. Three molecular markers were obtained: COI, 28S (D3–D5) and ITS1-5.8S-ITS2. COI and 28S phylogenetic analyses show that the new species fits clearly within the genus Tethya. This is the 28th species of Tethya reported from Australia; it is unusual in that it has a stalk. The presence of a stalk as a morphological character to split genera in this family is questioned. The description of this new species is an opportunity to revisit the molecular phylogeny of the Tethyida Morrow & Cárdenas, 2015 using comprehensive datasets of COI and 28S markers. As in previous analyses, four Tethya clades were retrieved; we discuss the possibility of using external colour to support some of these clades. Despite unclear phylogenetic relationships amongst Tethyidae Gray, 1848 from Australia, our results suggest that tethyid genera Tethytimea Laubenfels, 1936, Tectitethya Sarà, 1994, Laxotethya Sarà & Sarà, 2002, Stellitethya Sarà, 1994, and Xenospongia Gray, 1858 derive from species of Tethya. We show that asters have been secondarily lost at least twice in the Hemiasterellidae Lendenfeld, 1889: in Liosina Thiele, 1899 and a potential new genus from northern Australia. We formally propose the reallocation of Liosina from Dictyonellidae van Soest, Diaz & Pomponi, 1990 to Hemiasterellidae Lendenfeld, 1889. |
| first_indexed | 2024-12-17T21:24:06Z |
| format | Article |
| id | doaj.art-d8f2c11109f9494792307b456bfa29f9 |
| institution | Directory Open Access Journal |
| issn | 2118-9773 |
| language | English |
| last_indexed | 2024-12-17T21:24:06Z |
| publishDate | 2019-06-01 |
| publisher | Consortium of European Natural History Museums |
| record_format | Article |
| series | European Journal of Taxonomy |
| spelling | doaj.art-d8f2c11109f9494792307b456bfa29f92022-12-21T21:32:04ZengConsortium of European Natural History MuseumsEuropean Journal of Taxonomy2118-97732019-06-0152910.5852/ejt.2019.529581A new deep-water Tethya (Porifera, Tethyida, Tethyidae) from the Great Australian Bight and an updated Tethyida phylogenyShirley J. Sorokin0Merrick G. Ekins1Qi Yang2Paco Cárdenas3South Australian Museum, North Tce, Adelaide, South Australia; SARDI Aquatic Sciences, 2 Hamra Ave, West Beach, South AustraliaQueensland Museum, Southbank, Queensland, Australia; School of Biological Sciences, University of Queensland, St Lucia, QueenslandCenter for Marine Drugs, State Key Laboratory of Oncogene and Related Genes, Department of Pharmacy, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, ShanghaiPharmacognosy, Department of Medicinal Chemistry, BMC, Uppsala University, UppsalaA new species of Tethya Lamarck, 1815 is described from a depth of 1000 m on the continental slope of the Great Australian Bight (GAB), southern Australia. The GAB slope was explored as part of systematic benthic surveys to understand unexplored communities in the light of current oil and gas exploration activity in the area. Tethya irisae sp. nov. was present at 1000 m in six of eight longitudinal depth surveys. Three molecular markers were obtained: COI, 28S (D3–D5) and ITS1-5.8S-ITS2. COI and 28S phylogenetic analyses show that the new species fits clearly within the genus Tethya. This is the 28th species of Tethya reported from Australia; it is unusual in that it has a stalk. The presence of a stalk as a morphological character to split genera in this family is questioned. The description of this new species is an opportunity to revisit the molecular phylogeny of the Tethyida Morrow & Cárdenas, 2015 using comprehensive datasets of COI and 28S markers. As in previous analyses, four Tethya clades were retrieved; we discuss the possibility of using external colour to support some of these clades. Despite unclear phylogenetic relationships amongst Tethyidae Gray, 1848 from Australia, our results suggest that tethyid genera Tethytimea Laubenfels, 1936, Tectitethya Sarà, 1994, Laxotethya Sarà & Sarà, 2002, Stellitethya Sarà, 1994, and Xenospongia Gray, 1858 derive from species of Tethya. We show that asters have been secondarily lost at least twice in the Hemiasterellidae Lendenfeld, 1889: in Liosina Thiele, 1899 and a potential new genus from northern Australia. We formally propose the reallocation of Liosina from Dictyonellidae van Soest, Diaz & Pomponi, 1990 to Hemiasterellidae Lendenfeld, 1889.https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/707PoriferaDictyonellidaeHemiasterellidaeLiosinamarine benthos |
| spellingShingle | Shirley J. Sorokin Merrick G. Ekins Qi Yang Paco Cárdenas A new deep-water Tethya (Porifera, Tethyida, Tethyidae) from the Great Australian Bight and an updated Tethyida phylogeny European Journal of Taxonomy Porifera Dictyonellidae Hemiasterellidae Liosina marine benthos |
| title | A new deep-water Tethya (Porifera, Tethyida, Tethyidae) from the Great Australian Bight and an updated Tethyida phylogeny |
| title_full | A new deep-water Tethya (Porifera, Tethyida, Tethyidae) from the Great Australian Bight and an updated Tethyida phylogeny |
| title_fullStr | A new deep-water Tethya (Porifera, Tethyida, Tethyidae) from the Great Australian Bight and an updated Tethyida phylogeny |
| title_full_unstemmed | A new deep-water Tethya (Porifera, Tethyida, Tethyidae) from the Great Australian Bight and an updated Tethyida phylogeny |
| title_short | A new deep-water Tethya (Porifera, Tethyida, Tethyidae) from the Great Australian Bight and an updated Tethyida phylogeny |
| title_sort | new deep water tethya porifera tethyida tethyidae from the great australian bight and an updated tethyida phylogeny |
| topic | Porifera Dictyonellidae Hemiasterellidae Liosina marine benthos |
| url | https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/707 |
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