Abstract
Benthodytes occidentpalauta sp. nov. was collected from the Kyushu-Palau Ridge at a depth of 5 481 m in 2021. This new species is characterized by a gelatinous body wall, violet skin, six pairs of dorsal papillae, and a rough mid-ventral surface without tube feet. The dorsal deposits are rod-shaped and tripartite. Two types of papillae deposits as crosses with four arms with central bipartite apophyses. Ventral deposits are rods. Tentacle ossicles are rod-shaped with end protrusions. Gonad deposits are rod-shaped, tripartite, and cross-shaped. The phylogenetic analyses based on cytochrome oxidase subunit 1 (COI) and 16S individually and a concatenated dataset of COI and 16S genes of this species support that B. occidentpalauta sp. nov. belongs to Benthodytes.
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Data Availability Statement
The data generated and analyzed to support the research result can be provided by the corresponding author upon reasonable request.
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Acknowledgment
The authors are grateful to the assistance of the crew of Jiaolong HOV with sample collection and in-situ photographs. Thanks to Bo LU and Chengcheng SHEN from the Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, for taking the photos and preserving the samples on deck. We are grateful to the reviewers for their constructive comments.
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Supported by the National Key R&D Program of China (No. 2022YFC2803902), the Project of State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, MNR (No. SOEDZZ2002), and the Scientific Research Fund of the Second Institute of Oceanography, MNR (No. SZ2101)
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Yuan, C., Wang, C. & Zhang, D. Benthodytes occidentpalauta sp. nov., a new species of deep-sea holothuroid (Elasipodida: Psychropotidae) from the west of Kyushu-Palau Ridge in the Western Pacific Ocean. J. Ocean. Limnol. 42, 252–262 (2024). https://doi.org/10.1007/s00343-023-2344-x
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DOI: https://doi.org/10.1007/s00343-023-2344-x