A new eyeless species of <i>Nicon</i> (Annelida: Nereididae) from the deep Northwest Pacific Ocean

Yueyun Wang; Hong Cheng; Chunsheng Wang

doi:10.1007/s13131-021-1886-z

Volume 40 Issue 12

Dec. 2022

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Yueyun Wang, Hong Cheng, Chunsheng Wang. A new eyeless species of Nicon (Annelida: Nereididae) from the deep Northwest Pacific Ocean[J]. Acta Oceanologica Sinica, 2021, 40(12): 20-26. doi: 10.1007/s13131-021-1886-z

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Yueyun Wang, Hong Cheng, Chunsheng Wang. A new eyeless species of Nicon (Annelida: Nereididae) from the deep Northwest Pacific Ocean[J]. Acta Oceanologica Sinica, 2021, 40(12): 20-26. doi: 10.1007/s13131-021-1886-z

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A new eyeless species of Nicon (Annelida: Nereididae) from the deep Northwest Pacific Ocean

doi: 10.1007/s13131-021-1886-z

Yueyun Wang^{1, 2},
Hong Cheng^{1, 2},
Chunsheng Wang^{1, 2, 3, 4
,
,}

1.
Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
2.
Key Laboratory of Marine Ecosystem Dynamics, Ministry of Natural Resources, Hangzhou 310012, China
3.
School of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, China
4.
Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519080, China

Funds: The National Natural Science Foundation of China under contract No. 41806179; the China Ocean Mineral Resources Research and Development Association Program under contract No. DY135-E2-2-03.

More Information

Corresponding author: E-mail: wangsio@sio.org.cn
Received Date: 2021-05-08
Accepted Date: 2021-06-21

Available Online: 2021-09-30

Publish Date: 2021-11-25

Abstract

Abstract

A new species of the nereidid annelid, genus Nicon Kinberg, 1866, from KIOST Seamount, Northwest Pacific deep water is described. Nicon is a genus characterized by lacking paragnaths or papillae on the pharynx and composed of nine species worldwide, distributed from shallow water to deep sea. Nicon ablepsia sp. nov. here described is characterized by the lack of eyes on the prostomium, prolonged tentacular cirri reaching to chaetiger 6, notochaetae homogomph spinigers, neurochaetae homogomph spinigers and heterogomph falcigers. Phylogenetic relationships of Nicon remain undetermined based on molecular data. In this study, we constructed molecular Maximum-Likelihood phylogenetic tree from 29 nereidid species based on four marker genes: mitochondrial 16S rRNA gene and cytochrome c oxidase subunit I (COI) gene; nuclear 18S rRNA gene and 28S rRNA gene. Our analysis suggest the Nicon is clustered within Nereidinae, and nereidinae is not recovered as monophyletic. A key to species of Nicon is provided.
- deep sea,
- Nicon,
- new species,
- Gymnonereidinae,
- systematics

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References(26)

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