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First discovery of the sessile barnacle Eochionelasmus (Cirripedia: Balanomorpha) from a hydrothermal vent field in the Indian Ocean

Published online by Cambridge University Press:  17 June 2020

Benny K. K. Chan ,
Se-Jong Ju ,
Dong-Sung Kim  and
Se-Joo Kim Open the ORCID record for Se-Joo Kim [Opens in a new window]
Benny K. K. Chan
Affiliation:
Biodiversity Research Center, Academia Sinica, Taipei115, Taiwan
Se-Jong Ju
Affiliation:
Global Ocean Research Center, Korea Institute of Ocean Science and Technology, Busan49111, Korea Marine Biology Major, University of Science & Technology, Daejeon34113, Korea
Dong-Sung Kim
Affiliation:
Marine Ecosystem Research Center, Korea Institute of Ocean Science and Technology, Busan49111, Korea
Se-Joo Kim*
Affiliation:
Genome Editing Research Center, Korea Research Institute Bioscience and Biotechnology, Daejeon, 34141, Korea
*
Author for correspondence: Dong-Sung Kim, E-mail: [email protected]; Se-Joo Kim, E-mail: [email protected]
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Abstract

A new species of chionelasmatid sessile vent barnacle, Eochionelasmus coreana sp. nov., is described and illustrated on the basis of specimens collected from the Solitaire hydrothermal vent field in the Central Indian Ridge of the Indian Ocean. This new species is morphologically very similar to E. ohtai, the type species of the genus Eochionelasmus. However, it differs from E. ohtai in its distribution, the status of the notch on the maxillule, and the positions of rl1 and cl1 on whorls of the imbricating plates. In addition, a molecular phylogenetic tree indicated that the chionelasmatid Eochionelasmus was closely related to the waikalasmatid Waikalasma with high supporting values rather than the other chionelasmatid Chionelasmus. The new species is not only the first record of a sessile vent barnacle from outside of the Pacific Ocean, but is also the first sessile barnacle from the Indian Ocean.

Keywords

ChionelasmatidaeEochionelasmus coreanahydrothermal ventIndian OceanSolitaire vent fieldWaikalasmatidae
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 100 , Issue 4 , June 2020 , pp. 585 - 593
Copyright
Copyright © Marine Biological Association of the United Kingdom 2020

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