A new species of Mesochaetopterus (Annelida, Chaetopteridae) from Hong Kong, with comments on the phylogeny of the family

Yanjie Zhang; Greg W. Rouse; Jianwen Qiu

doi:10.11646/zootaxa.3974.4.2

A new species of Mesochaetopterus (Annelida, Chaetopteridae) from Hong Kong, with comments on the phylogeny of the family

Yanjie Zhang, Greg W. Rouse, Jianwen Qiu^*

^*Corresponding author for this work

Department of Biology

Research output: Contribution to journal › Journal article › peer-review

12 Citations (Scopus)

Abstract

We described a new species, Mesochaetopterus tingkokensis, based on 14 specimens collected from an intertidal area in Hong Kong. This species is large (body length of complete specimens 17.9-24.1 cm), with 9, 2 and 36-41 chaetigers in region A, B and C, respectively. It belongs to a small group of Mesochaetopterus species with an expanded wing-shaped notopodia in chaetiger B2. The new species can be distinguished from other Mesochaetopterus species in this group by having a pair of palps with two longitudinal stripes formed by suture-like discontinuous orange bands, more teeth in the uncini of region B and C neuropodia, and presence of a bundle of simple chaetae in region C notopodia. Comparison with other chaetopterids based on partial cytochrome oxidase I (COI), 18S and 28S rRNA gene sequences confirmed the placement of M. tingkokensis n. sp.within Mesochaetopterus and its distinction from other members of this genus with the available DNA sequences. The phylogenetic tree base on COI showed that Mesochaetopterus and Chaetopterus are paraphyletic, but that based on concatenated data, 18S and 28S showed they are monophyletic with low supporting values.

Original language	English
Pages (from-to)	495-506
Number of pages	12
Journal	Zootaxa
Volume	3974
Issue number	4
DOIs	https://doi.org/10.11646/zootaxa.3974.4.2
Publication status	Published - 24 Jun 2015

Scopus Subject Areas

Ecology, Evolution, Behavior and Systematics
Animal Science and Zoology

User-Defined Keywords

Hong kong
Mesochaetopterus
New species
Polychaete
Taxonomy

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10.11646/zootaxa.3974.4.2

Cite this

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title = "A new species of Mesochaetopterus (Annelida, Chaetopteridae) from Hong Kong, with comments on the phylogeny of the family",

abstract = "We described a new species, Mesochaetopterus tingkokensis, based on 14 specimens collected from an intertidal area in Hong Kong. This species is large (body length of complete specimens 17.9-24.1 cm), with 9, 2 and 36-41 chaetigers in region A, B and C, respectively. It belongs to a small group of Mesochaetopterus species with an expanded wing-shaped notopodia in chaetiger B2. The new species can be distinguished from other Mesochaetopterus species in this group by having a pair of palps with two longitudinal stripes formed by suture-like discontinuous orange bands, more teeth in the uncini of region B and C neuropodia, and presence of a bundle of simple chaetae in region C notopodia. Comparison with other chaetopterids based on partial cytochrome oxidase I (COI), 18S and 28S rRNA gene sequences confirmed the placement of M. tingkokensis n. sp.within Mesochaetopterus and its distinction from other members of this genus with the available DNA sequences. The phylogenetic tree base on COI showed that Mesochaetopterus and Chaetopterus are paraphyletic, but that based on concatenated data, 18S and 28S showed they are monophyletic with low supporting values.",

keywords = "Hong kong, Mesochaetopterus, New species, Polychaete, Taxonomy",

author = "Yanjie Zhang and Rouse, {Greg W.} and Jianwen Qiu",

note = "This work was supported by Collaborative Research Fund (No. HKU5/CRF/12G) and Environment and Conservation Fund (No. 2014-64) of the Hong Kong SAR Government. We thank James Y. Xie and Jin Sun for assistance in sampling, Dr. Tomoyuki Komai for the loan of M. japonicus and M. selangolus specimens, and Dr. Daniel Martin and an anonymous reviewer for helpful comments.",

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AU - Qiu, Jianwen

N1 - This work was supported by Collaborative Research Fund (No. HKU5/CRF/12G) and Environment and Conservation Fund (No. 2014-64) of the Hong Kong SAR Government. We thank James Y. Xie and Jin Sun for assistance in sampling, Dr. Tomoyuki Komai for the loan of M. japonicus and M. selangolus specimens, and Dr. Daniel Martin and an anonymous reviewer for helpful comments.

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N2 - We described a new species, Mesochaetopterus tingkokensis, based on 14 specimens collected from an intertidal area in Hong Kong. This species is large (body length of complete specimens 17.9-24.1 cm), with 9, 2 and 36-41 chaetigers in region A, B and C, respectively. It belongs to a small group of Mesochaetopterus species with an expanded wing-shaped notopodia in chaetiger B2. The new species can be distinguished from other Mesochaetopterus species in this group by having a pair of palps with two longitudinal stripes formed by suture-like discontinuous orange bands, more teeth in the uncini of region B and C neuropodia, and presence of a bundle of simple chaetae in region C notopodia. Comparison with other chaetopterids based on partial cytochrome oxidase I (COI), 18S and 28S rRNA gene sequences confirmed the placement of M. tingkokensis n. sp.within Mesochaetopterus and its distinction from other members of this genus with the available DNA sequences. The phylogenetic tree base on COI showed that Mesochaetopterus and Chaetopterus are paraphyletic, but that based on concatenated data, 18S and 28S showed they are monophyletic with low supporting values.

AB - We described a new species, Mesochaetopterus tingkokensis, based on 14 specimens collected from an intertidal area in Hong Kong. This species is large (body length of complete specimens 17.9-24.1 cm), with 9, 2 and 36-41 chaetigers in region A, B and C, respectively. It belongs to a small group of Mesochaetopterus species with an expanded wing-shaped notopodia in chaetiger B2. The new species can be distinguished from other Mesochaetopterus species in this group by having a pair of palps with two longitudinal stripes formed by suture-like discontinuous orange bands, more teeth in the uncini of region B and C neuropodia, and presence of a bundle of simple chaetae in region C notopodia. Comparison with other chaetopterids based on partial cytochrome oxidase I (COI), 18S and 28S rRNA gene sequences confirmed the placement of M. tingkokensis n. sp.within Mesochaetopterus and its distinction from other members of this genus with the available DNA sequences. The phylogenetic tree base on COI showed that Mesochaetopterus and Chaetopterus are paraphyletic, but that based on concatenated data, 18S and 28S showed they are monophyletic with low supporting values.

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A new species of Mesochaetopterus (Annelida, Chaetopteridae) from Hong Kong, with comments on the phylogeny of the family

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