Sexually Dimorphic Scale Worms (Annelida: Polynoidae) From Hydrothermal Vents in the Okinawa Trough: Two New Species and Two New Sex Morphs
Scale worms in the family Polynoidae are common inhabitants of both shallow-water and deep-sea ecosystems, but their diversity in the deep-sea remains poorly known. In the West Pacific, only 10 polynoid species have been described from deep-sea chemosynthetic ecosystems including hydrothermal vents...
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| Format: | Article |
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Frontiers Media S.A.
2018-04-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | http://journal.frontiersin.org/article/10.3389/fmars.2018.00112/full |
| _version_ | 1828234667717820416 |
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| author | Yanjie Zhang Yanjie Zhang Chong Chen Jian-Wen Qiu Jian-Wen Qiu |
| author_facet | Yanjie Zhang Yanjie Zhang Chong Chen Jian-Wen Qiu Jian-Wen Qiu |
| author_sort | Yanjie Zhang |
| collection | DOAJ |
| description | Scale worms in the family Polynoidae are common inhabitants of both shallow-water and deep-sea ecosystems, but their diversity in the deep-sea remains poorly known. In the West Pacific, only 10 polynoid species have been described from deep-sea chemosynthetic ecosystems including hydrothermal vents and methane seeps. Here, we described two new species of polynoids based on specimens collected from hydrothermal vents in the Okinawa Trough. Levensteiniella undomarginata sp. nov. is distinguished from other congeners by having elytra with a wave-shaped edge, and that males possess two pairs of nephridial papillae. Branchinotogluma elytropapillata sp. nov. differs from other congeners by having papillae on the elytral edge, and by having a single pair of nephridial papillae and five pairs of C-shaped lamellae in males. Furthermore, we redescribed Lepidonotopodium okinawae (Sui and Li, 2017) and Branchinotogluma japonicus Miura and Hashimoto, 1991, because the original description of the former species did not cover males and that of the latter did not cover females. Sequencing of the cytochrome oxidase I (COI) gene in these four species confirmed the sexual dimorphism in vent polynoids for the first time, and provided reliable barcoding sequences for identifying these polychaetes. |
| first_indexed | 2024-04-12T19:59:54Z |
| format | Article |
| id | doaj.art-35dcb11449c34a7a9e0bfddc84cceb85 |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-04-12T19:59:54Z |
| publishDate | 2018-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-35dcb11449c34a7a9e0bfddc84cceb852022-12-22T03:18:33ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452018-04-01510.3389/fmars.2018.00112335418Sexually Dimorphic Scale Worms (Annelida: Polynoidae) From Hydrothermal Vents in the Okinawa Trough: Two New Species and Two New Sex MorphsYanjie Zhang0Yanjie Zhang1Chong Chen2Jian-Wen Qiu3Jian-Wen Qiu4Department of Biology, Hong Kong Baptist University, Kowloon, Hong KongHong Kong Baptist University Institute of Research and Continuing Education, Shenzhen, ChinaDepartment of Subsurface Geobiological Analysis and Research, Japan Agency for Marine-Earth Science and Technology, Yokosuka, JapanDepartment of Biology, Hong Kong Baptist University, Kowloon, Hong KongHong Kong Baptist University Institute of Research and Continuing Education, Shenzhen, ChinaScale worms in the family Polynoidae are common inhabitants of both shallow-water and deep-sea ecosystems, but their diversity in the deep-sea remains poorly known. In the West Pacific, only 10 polynoid species have been described from deep-sea chemosynthetic ecosystems including hydrothermal vents and methane seeps. Here, we described two new species of polynoids based on specimens collected from hydrothermal vents in the Okinawa Trough. Levensteiniella undomarginata sp. nov. is distinguished from other congeners by having elytra with a wave-shaped edge, and that males possess two pairs of nephridial papillae. Branchinotogluma elytropapillata sp. nov. differs from other congeners by having papillae on the elytral edge, and by having a single pair of nephridial papillae and five pairs of C-shaped lamellae in males. Furthermore, we redescribed Lepidonotopodium okinawae (Sui and Li, 2017) and Branchinotogluma japonicus Miura and Hashimoto, 1991, because the original description of the former species did not cover males and that of the latter did not cover females. Sequencing of the cytochrome oxidase I (COI) gene in these four species confirmed the sexual dimorphism in vent polynoids for the first time, and provided reliable barcoding sequences for identifying these polychaetes.http://journal.frontiersin.org/article/10.3389/fmars.2018.00112/fullhydrothermal ventpolychaeteBranchinotoglumaBranchipolynoeLepidonotopodiumLevensteiniella |
| spellingShingle | Yanjie Zhang Yanjie Zhang Chong Chen Jian-Wen Qiu Jian-Wen Qiu Sexually Dimorphic Scale Worms (Annelida: Polynoidae) From Hydrothermal Vents in the Okinawa Trough: Two New Species and Two New Sex Morphs Frontiers in Marine Science hydrothermal vent polychaete Branchinotogluma Branchipolynoe Lepidonotopodium Levensteiniella |
| title | Sexually Dimorphic Scale Worms (Annelida: Polynoidae) From Hydrothermal Vents in the Okinawa Trough: Two New Species and Two New Sex Morphs |
| title_full | Sexually Dimorphic Scale Worms (Annelida: Polynoidae) From Hydrothermal Vents in the Okinawa Trough: Two New Species and Two New Sex Morphs |
| title_fullStr | Sexually Dimorphic Scale Worms (Annelida: Polynoidae) From Hydrothermal Vents in the Okinawa Trough: Two New Species and Two New Sex Morphs |
| title_full_unstemmed | Sexually Dimorphic Scale Worms (Annelida: Polynoidae) From Hydrothermal Vents in the Okinawa Trough: Two New Species and Two New Sex Morphs |
| title_short | Sexually Dimorphic Scale Worms (Annelida: Polynoidae) From Hydrothermal Vents in the Okinawa Trough: Two New Species and Two New Sex Morphs |
| title_sort | sexually dimorphic scale worms annelida polynoidae from hydrothermal vents in the okinawa trough two new species and two new sex morphs |
| topic | hydrothermal vent polychaete Branchinotogluma Branchipolynoe Lepidonotopodium Levensteiniella |
| url | http://journal.frontiersin.org/article/10.3389/fmars.2018.00112/full |
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