RT Journal Article T1 The first deep-sea ctenostome bryozoan from the Indian Ocean: Aethozoon flavum sp. nov. A1 Schwaha, Thomas A1 Zeppilli, Daniela A1 González Casarrubios, Alberto A1 Cepeda, Diego AB Aethozoid ctenostome bryozoans are an unusual, small group of solitary ctenostome bryozoans, occurring almost exclusively in deep-sea habitats. Currently, there are only five species belonging to four, still insufficiently known genera, which have been reported from the Atlantic and Pacific Oceans. Recent examination of sediment core samples from an active volcanic area near Mayotte revealed a high abundance of aethozoids, recorded for the first time in the Indian Ocean. A comparative approach identified the specimens as belonging to a new species, Aethozoon flavum sp. nov. There are particular characters diagnostic of this new species, such as basally oriented duplicature bands, a highly denticulate proximal vestibular wall, and a highly elongated anal tube terminating in an almost vestibular anus. This species is the first ctenostome observed at depths of over 3.000 m in the Indian Ocean. Morphological characters are compared among all aethozoids, but still require more detailed analyses in most species. Aethozoids appear to be globally distributed and often occur in high numbers, which indicates that additional efforts will increase their distribution and species range. Ultimately, additional studies will be able to show the ecological importance of these bryozoans and molecular studies should reveal more about their diversity and phylogenetic affinities. PB Springer SN 1867-1616 YR 2024 FD 2024-02 LK https://hdl.handle.net/20.500.14352/118895 UL https://hdl.handle.net/20.500.14352/118895 LA eng NO Schwaha, T., Zeppilli, D., González-Casarrubios, A. et al. The first deep-sea ctenostome bryozoan from the Indian Ocean: Aethozoon flavum sp. nov.. Mar. Biodivers. 54, 19 (2024). https://doi.org/10.1007/s12526-024-01409-9 NO Funding:This work was supported by the BLUE REVOLUTION project (Biodiversity underestimation in our bLUe planEt: artificial intelligence REVOLUTION in benthic taxonomy) funded by the Interdisciplinary Graduate School for the blue planet (ANR-17-EURE-0015) and Ifremer (Institut français de recherche pour l'exploitation de la mer). NO Interdisciplinary Graduate School for the Blue Planet NO Institut Français de Recherche pour l'Exploitation de la Mer DS Docta Complutense RD 9 abr 2025