

FOLLOWUS
1.Laboratory of Marine Organism Taxonomy and Phylogeny, Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
2.Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
Kuidong XU, E-mail: kxu@qdio.ac.cn
Received:24 November 2020,
Accepted:03 February 2021,
Online First:11 May 2021,
Published:2021-09
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Ting LÜ, Zifeng ZHAN, Kuidong XU. Morphology and molecular phylogeny of three black corals (Antipatharia, Schizopathidae) from seamounts in the Western Pacific Ocean, with description of a new species[J]. Journal of Oceanology and Limnology, 2021, 39(5): 1740-1757.
Ting LÜ, Zifeng ZHAN, Kuidong XU. Morphology and molecular phylogeny of three black corals (Antipatharia, Schizopathidae) from seamounts in the Western Pacific Ocean, with description of a new species[J]. Journal of Oceanology and Limnology, 2021, 39(5): 1740-1757. DOI: 10.1007/s00343-021-0455-9.
Three deep-sea black corals belonging to the family Schizopathidae
are reported from two seamounts on the Caroline Ridge in the tropical Western Pacific:
Umbellapathes parva
sp. nov. with depth of 1 488-1 766 m
Telopathes
cf.
magna
MacIsaac & Best
2013
MacIsaac & Best
2013
with depth of 937-1 016 m
and
Stauropathes
cf.
punctata
(
Roule
1905
Roule
1905
) with depth of 942-1 353 m. The latter two species are the first records in the Western Pacific Ocean.
U. parva
sp. nov. is characterized by monopodial corallum
relatively long unpinnulated stalk with complex pinnulated branches developing from the lowermost primary pinnules and small spines. It differs from two known congeners by much smaller spines and the present of secondary pinnules.
T
. cf.
magna
MacIsaac & Best
2013
MacIsaac & Best
2013
has sparsely branched corallum
relatively long and simple pinnules arranged in subopposite or alternate pairs.
S
. cf.
punctata
(
Roule
1905
Roule
1905
) is characterized by the corallum with almost planar pinnulated branches
and pinnules arranged in subopposite pairs. Our results indicate that the corallum size and shape are variable in conspecific specimens particularly those at different growth stages. By contrast
the size of the polypar spines as well as the abpolypar spines have little variation and can be served as a main differing feature for schizopathid species. The phylogenetic analyses using nuclear internal transcribed spacer region (spanning partial 18S rDNA
ITS1
5.8S
ITS2
and partial 28S rDNA) and two mitochondrial fragments
cox3
-IGR-
cox1
(COI) and
trnW
-IGR-
nad2
(NAD2) showed
Telopathes
Stauropathes
and
Bathypathes
had close relationships
and
Umbellapathes
formed a sister clade with
Alternatipathes
.
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