Abstract
Three deep-sea tardigrade species were identified from the sediment samples collected during the four German–Russian joint deep-sea cruises that were conducted in the North-Western Pacific: Coronarctus sonne sp. nov., Moebjergarctus okhotensis sp. nov., and Angursa cf. bicuspis. Specimens of those species were collected at depths between 1700 and 5410 m. The new species Coronarctus sonne sp. nov. belongs to the Cor. tenellus group of species on the basis of morphological traits such as the short cephalic appendages and heteromorphic claws. The structure of the secondary clavae and two points, with an accessory point and a primary point simultaneously on the internal and external claws on legs IV, are significant characteristics distinguishing Coronarctus sonne sp. nov. from other described species. Moebjergarctus okhotensis sp. nov. is characterized by having cephalic cirri with the long smooth portion of the scapus and annulated scapus only in the basal portion, the structure of the male and female reproductive system, and differences in the sizes of some structures compared to the other described species. An analysis of the results of four deep-sea expeditions indicates a patchy distribution of tardigrades in the North-Western Pacific.
Funder
Ministry of Science and Higher Education of the Russian Federation
Subject
Nature and Landscape Conservation,Agricultural and Biological Sciences (miscellaneous),Ecological Modeling,Ecology
Reference43 articles.
1. Schill, R.O. (2018). Water Bears: The Biology of Tardigrades, Springer International Publishing.
2. Schill, R.O. (2018). Water Bears: The Biology of Tardigrades, Springer International Publishing.
3. Degma, P., Bertolani, R., and Guidetti, R. (2022, September 15). Actual Checklist of Tardigrada Species, (41st Edition: 12-05-2022); 2009–2022. Available online: http://www.evozoo.unimore.it/site/home/tardigrade-tools/documento1080026927.html.
4. 20 Years of Zootaxa: Tardigrada (Ecdysozoa: Panarthropoda);Mcinnes;Zootaxa,2021
5. The zoogeography of marine Tardigrada;Kaczmarek;Zootaxa,2015
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