RT Journal Article
T1 Discovery of a new Kinorhyncha species from the uncharted South Orkney Trench (Southern Ocean)
A1 Sánchez Santos, Nuria
A1 García Cobo, Marta
A1 Shimabukuro, Mauricio
A1 Zeppilli, Daniela
A1 Nomaki, Hidetaka
A1 González Casarrubios, Alberto
AB The knowledge about the deep-sea Kinorhyncha community has increased considerably in recent years. However, the records of kinorhynchs inhabiting hadal depths are still extremely limited. In the present study, we describe a new species of Echinoderes discovered from the South Orkney Trench, Southern Ocean. Echinoderes australis sp. nov. is characterized by the presence of middorsal acicular spines on segments 4-8 and lateroventral ones on segments 6-9, and tubes in lateroventral position on segment 5, in lateral accessory position on segment 8, and in laterodorsal position on segment 10. Additionally, the new species has conspicuous papillary flaps on segments 8-9. Among its morphological characteristics, the increase in length of the middorsal spine of segment 8 and lateroventral spines of segment 9 in relation to those of the previous segments are striking features, showing a whip-like appearance. E. australis sp. nov. Becomes the third hadal species of the phylum. In addition, we provide morphological information on the two other species found in the trench. Finally, we study in detail the diversity and distribution patterns of the Kinorhyncha of the South Orkney Trench, addressing aspects such as species richness, abundance, number of adults versus juveniles and the effect of bathymetry on the community composition.
PB Elsevier
SN 0044-5231
YR 2024
FD 2024
LK https://hdl.handle.net/20.500.14352/116264
UL https://hdl.handle.net/20.500.14352/116264
LA eng
NO Sánchez, N., García-Cobo, M., Shimabukuro, M., Zeppilli, D., Nomaki, H., & González-Casarrubios, A. (2024). Discovery of a new Kinorhyncha species from the uncharted South Orkney Trench (Southern ocean). Zoologischer Anzeiger, 313, 315-331. https://doi.org/10.1016/j.jcz.2024.10.016
NO This work was partly supported by the Ocean Shot Research Grant Program “Massive mEIOfauna DiscoverY of new Species of our oceans and SEAs” (MEIODYSSEA) funded by the Sasakawa Peace Foundation (PI: Daniela Zeppilli) and the Danish National Research Foundation through the Danish Center for Hadal Research, HADAL (Grant number DNRF145). MGC was supported by an Erasmus+ short-term fellowship. Taxonomic research made by AGC and NS were supported by the International Seabed Authority's Sustainable Seabed Knowledge Initiative: One Thousand Reasons Campaign (co-financed by the European Maritime and Fisheries Fund of the European Union, Project 101071214 — SSKI-I — EMFAF-2021-ISA-SSKI-IBA).
NO Sasakawa Peace Foundation
NO Danish National Research Foundation
NO European Commission
DS Docta Complutense
RD 1 sept 2025