TY - JOUR
T1 - A new genus and species of Nanaloricidae (Loricifera
T2 - Nanaloricida) from the Clarion-Clipperton Fracture Zone
AU - Fujimoto, Shinta
AU - Murakami, Chisato
N1 - Funding Information:
We express our sincere gratitude to Soichiro Tanaka and Akira Tsune (Deep Ocean Resources Development Co., Ltd.), Habato Furuta (Marine Biological Research Institute of Japan Co., Ltd.), and all other members of the 2018 exploration team, and Captain Dave Mark and the crew of the R/V Kilo Moana (University of Hawai’i Marine Center) for their effort on board. Jun Watanabe, Toshiyuki Nakanishi, and Junpei Minatoya (Marine Biological Research Institute of Japan Co., Ltd.) are acknowledged for their effort in sorting the specimen used in this study. We thank Martin Vinther Sørensen and one anonymous reviewer for their valuable comments that helped improve this manuscript. All data were made available by Japan’s Ministry of Economy, Trade and Industry and Japan Oil, Gas and Metals National Corporation. This study was supported by a research grant from Marine Biological Research Institute of Japan Co., Ltd. to SF.
PY - 2020/11
Y1 - 2020/11
N2 - A loriciferan specimen was found during a survey of the Clarion-Clipperton Fracture Zone conducted by Deep Ocean Resources Development Co. Ltd. (Japan). This specimen was extracted from sediment covering the polymetallic nodules collected from the abyssal plain (−5223 m). Based on the appearance of its annulated buccal tube, branched clavoscalids, and lorica with plates and anterior spikes, it was classified as an adult male belonging to the family Nanaloricidae. However, this nanaloricid exhibited novel character traits including serrated oral petals, atypical arrangement of the scalids on the introvert, and a lorica with 20 plates bearing 14 short anterior spikes. These characteristics justify the creation of Fafnirloricus polymetallicus gen. et sp. nov. Compared to the five nanaloricid genera with their adult/postlarval stages known, the short anterior spikes and lack of intercalary plicae suggest that this new genus and species is closely related to Phoeniciloricus, and based on its lorica we hypothesize that this new taxon is the most basal of Nanaloricidae.
AB - A loriciferan specimen was found during a survey of the Clarion-Clipperton Fracture Zone conducted by Deep Ocean Resources Development Co. Ltd. (Japan). This specimen was extracted from sediment covering the polymetallic nodules collected from the abyssal plain (−5223 m). Based on the appearance of its annulated buccal tube, branched clavoscalids, and lorica with plates and anterior spikes, it was classified as an adult male belonging to the family Nanaloricidae. However, this nanaloricid exhibited novel character traits including serrated oral petals, atypical arrangement of the scalids on the introvert, and a lorica with 20 plates bearing 14 short anterior spikes. These characteristics justify the creation of Fafnirloricus polymetallicus gen. et sp. nov. Compared to the five nanaloricid genera with their adult/postlarval stages known, the short anterior spikes and lack of intercalary plicae suggest that this new genus and species is closely related to Phoeniciloricus, and based on its lorica we hypothesize that this new taxon is the most basal of Nanaloricidae.
KW - CCZ
KW - Deep-sea
KW - Meiofauna
KW - Phylogeny
KW - Taxonomy
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U2 - 10.1016/j.jcz.2020.10.009
DO - 10.1016/j.jcz.2020.10.009
M3 - Article
AN - SCOPUS:85096636498
VL - 289
SP - 177
EP - 188
JO - Zoologischer Anzeiger
JF - Zoologischer Anzeiger
SN - 0044-5231
ER -