Molecular and morphological description of a new species of Halisarca (Demospongiae: Halisarcida) from Mediterranean Sea and a redescription of the type species Halisarca dujardini
Halisarca harmelini sp. nov. is described from the northwestern Mediterranean Sea at depths between 15–65 m from coralligenous rocks. The new species occurs as thin sheets only on the bryozoan Smittina cervicornis. Morphologically, it is characterized by its thin layer architecture, skin-like, luste...
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2011
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ftmagnoliapress:oai:ojs.mapress.com:article/10504 2023-05-15T15:11:22+02:00 Molecular and morphological description of a new species of Halisarca (Demospongiae: Halisarcida) from Mediterranean Sea and a redescription of the type species Halisarca dujardini ERESKOVSKY, ALEXANDER V. LAVROV, DENNIS V. BOURY-ESNAULT, NICOLE VACELET, JEAN 2011-02-18 application/pdf https://www.mapress.com/j/zt/article/view/zootaxa.2768.1.2 https://doi.org/10.11646/zootaxa.2768.1.2 eng eng Mangolia Press https://www.mapress.com/j/zt/article/view/zootaxa.2768.1.2/19153 Copyright (c) 2015 Magnolia press Zootaxa; Vol 2768, No 1: 18 Feb. 2011; 5–31 1175-5334 1175-5326 10.11646/zootaxa.2768.1 Porifera taxonomy Halisarcida Halisarca new species mitochondrial genome Halisarca dujardini N-W Mediterranean ultrastructure info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2011 ftmagnoliapress https://doi.org/10.11646/zootaxa.2768.1.2 2019-02-05T15:58:34Z Halisarca harmelini sp. nov. is described from the northwestern Mediterranean Sea at depths between 15–65 m from coralligenous rocks. The new species occurs as thin sheets only on the bryozoan Smittina cervicornis. Morphologically, it is characterized by its thin layer architecture, skin-like, lusterless and smooth surface, a soft, very delicate and easily torn texture, and pale-yellow colour. At the cytological level H. harmelini is characterized by a complex of cells with inclusions: spherulous, vacuolar, granular, microgranular and rhabdiferous cells. The new species is clearly different in cell and endobiotic bacteria content and in external morphology from all previously described species of Halisarca. In addition to the description of the new species, we have conducted a thorough ultrastructural investigation and re-described the type species Halisarca dujardini Johnston, 1842 using specimens from different region of the North Atlantic, Arctic and North Pacific. To investigate the relationships between H. harmelini and H. dujardini on the molecular level, we determined the complete mitochondrial DNA (mtDNA) sequences of the new species of Halisarca and compared it with that of H. dujardini. The two mitochondrial genomes are identical in gene content and gene arrangement but differ in size by ~1,300 bp (6.8%). The overall genetic distance between coding sequences is 0.1, much greater than what has been previously reported for individual species of non-bilaterian animals. The latter observation supports the new species status of H. harmelini. Article in Journal/Newspaper Arctic Atlantic Arctic Atlantic-Arctic North Atlantic Magnolia press Arctic Pacific Zootaxa 2768 1 5 |
institution |
Open Polar |
collection |
Magnolia press |
op_collection_id |
ftmagnoliapress |
language |
English |
topic |
Porifera taxonomy Halisarcida Halisarca new species mitochondrial genome Halisarca dujardini N-W Mediterranean ultrastructure |
spellingShingle |
Porifera taxonomy Halisarcida Halisarca new species mitochondrial genome Halisarca dujardini N-W Mediterranean ultrastructure ERESKOVSKY, ALEXANDER V. LAVROV, DENNIS V. BOURY-ESNAULT, NICOLE VACELET, JEAN Molecular and morphological description of a new species of Halisarca (Demospongiae: Halisarcida) from Mediterranean Sea and a redescription of the type species Halisarca dujardini |
topic_facet |
Porifera taxonomy Halisarcida Halisarca new species mitochondrial genome Halisarca dujardini N-W Mediterranean ultrastructure |
description |
Halisarca harmelini sp. nov. is described from the northwestern Mediterranean Sea at depths between 15–65 m from coralligenous rocks. The new species occurs as thin sheets only on the bryozoan Smittina cervicornis. Morphologically, it is characterized by its thin layer architecture, skin-like, lusterless and smooth surface, a soft, very delicate and easily torn texture, and pale-yellow colour. At the cytological level H. harmelini is characterized by a complex of cells with inclusions: spherulous, vacuolar, granular, microgranular and rhabdiferous cells. The new species is clearly different in cell and endobiotic bacteria content and in external morphology from all previously described species of Halisarca. In addition to the description of the new species, we have conducted a thorough ultrastructural investigation and re-described the type species Halisarca dujardini Johnston, 1842 using specimens from different region of the North Atlantic, Arctic and North Pacific. To investigate the relationships between H. harmelini and H. dujardini on the molecular level, we determined the complete mitochondrial DNA (mtDNA) sequences of the new species of Halisarca and compared it with that of H. dujardini. The two mitochondrial genomes are identical in gene content and gene arrangement but differ in size by ~1,300 bp (6.8%). The overall genetic distance between coding sequences is 0.1, much greater than what has been previously reported for individual species of non-bilaterian animals. The latter observation supports the new species status of H. harmelini. |
format |
Article in Journal/Newspaper |
author |
ERESKOVSKY, ALEXANDER V. LAVROV, DENNIS V. BOURY-ESNAULT, NICOLE VACELET, JEAN |
author_facet |
ERESKOVSKY, ALEXANDER V. LAVROV, DENNIS V. BOURY-ESNAULT, NICOLE VACELET, JEAN |
author_sort |
ERESKOVSKY, ALEXANDER V. |
title |
Molecular and morphological description of a new species of Halisarca (Demospongiae: Halisarcida) from Mediterranean Sea and a redescription of the type species Halisarca dujardini |
title_short |
Molecular and morphological description of a new species of Halisarca (Demospongiae: Halisarcida) from Mediterranean Sea and a redescription of the type species Halisarca dujardini |
title_full |
Molecular and morphological description of a new species of Halisarca (Demospongiae: Halisarcida) from Mediterranean Sea and a redescription of the type species Halisarca dujardini |
title_fullStr |
Molecular and morphological description of a new species of Halisarca (Demospongiae: Halisarcida) from Mediterranean Sea and a redescription of the type species Halisarca dujardini |
title_full_unstemmed |
Molecular and morphological description of a new species of Halisarca (Demospongiae: Halisarcida) from Mediterranean Sea and a redescription of the type species Halisarca dujardini |
title_sort |
molecular and morphological description of a new species of halisarca (demospongiae: halisarcida) from mediterranean sea and a redescription of the type species halisarca dujardini |
publisher |
Mangolia Press |
publishDate |
2011 |
url |
https://www.mapress.com/j/zt/article/view/zootaxa.2768.1.2 https://doi.org/10.11646/zootaxa.2768.1.2 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic Atlantic Arctic Atlantic-Arctic North Atlantic |
genre_facet |
Arctic Atlantic Arctic Atlantic-Arctic North Atlantic |
op_source |
Zootaxa; Vol 2768, No 1: 18 Feb. 2011; 5–31 1175-5334 1175-5326 10.11646/zootaxa.2768.1 |
op_relation |
https://www.mapress.com/j/zt/article/view/zootaxa.2768.1.2/19153 |
op_rights |
Copyright (c) 2015 Magnolia press |
op_doi |
https://doi.org/10.11646/zootaxa.2768.1.2 |
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Zootaxa |
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2768 |
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1 |
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5 |
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1766342236439576576 |