A new species of Anobothrus (Polychaeta, Ampharetidae) from the Weddell Sea (Antarctica), with notes on habitat characteristics and an updated key to the genus
- Benthic samples were collected during two expeditions near the Antarctic Peninsula and in the South-Eastern Weddell Sea. During these studies, a new species of Ampharetidae Malmgren, 1867, Anobothrus konstantini Säring & Bick sp. nov., was found. Here we present a detailed description of this species. We used the traditional light microscope and scanning electron microscope (SEM) to identify and describe the diagnostic characters: a circular glandular band on segment 6; an elongate ridge between the notopodia on segment 12 and modified notochaetae on this segment; 16 thoracic, two intermediate and ten abdominal segments. For the first time, micro-computed tomography (micro-CT) was used for a species description of Anobothrus. Micro-CT provided information on the shape of the prostomium (Ampharete-type) and the arrangement of branchiae (four pairs in two rows, without a gap). In addition, we provide quantitative information on the environmental niche based on sediment parameters (chlorophyll a content, organic matter content, chloroplast equivalent, grain size) for the new Anobothrus species, relevant for, e.g., species distribution modelling. Finally, an identification key for all Anobothrus species is provided.
Author: | Friederike Säring, Andreas Bick, Heike Link |
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URN: | urn:nbn:de:hebis:30:3-651413 |
DOI: | https://doi.org/10.5852/ejt.2022.789.1637 |
ISSN: | 2118-9773 |
Parent Title (German): | European journal of taxonomy |
Series (Serial Number): | European journal of taxonomy : EJT (789:130-152) |
Publisher: | Muséum National d'Histoire Naturelle |
Place of publication: | Paris |
Document Type: | Article |
Language: | English |
Date of Publication (online): | 2022/02/01 |
Date of first Publication: | 2022/02/01 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2022/02/01 |
Tag: | Anobothrus konstantini Säring & Bick sp. nov.; Antarctic Peninsula; Filchner Trough; SEM; ecology; micro-CT analysis |
Volume: | 2022 |
Issue: | 789 |
Page Number: | 23 |
First Page: | 130 |
Last Page: | 152 |
HeBIS-PPN: | 490979920 |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 59 Tiere (Zoologie) / 590 Tiere (Zoologie) |
Sammlungen: | Sammlung Biologie / Sondersammelgebiets-Volltexte |
: | urn:nbn:de:hebis:30:3-257882 |
Licence (German): | Creative Commons - Namensnennung 4.0 |