Work

Discovery and description of a remarkable bathypelagic nudibranch, Bathydevius caudactylus, gen. et. sp. nov.

Year: 2024

Type: article

Abstract: We describe an exceptional nudibranch, new to science, from bathypelagic depths in the eastern North Pacific Ocean. More than 100 individuals of Bathydevius caudactylus gen. et. sp. nov. have been observed in the water column at depths between 1013 and 3272 m. Twenty spawning individuals were observed on the seafloor at depths between 2269 and 4009 m. Anatomy, diet, behavior, bioluminescence, and habitat distinguish this surprising nudibranch from all previously described species, and genetic evidence supports its placement in a new family. • We present a previously undescribed genus and species of deep-sea nudibranch. • It has unique morphology and is not closely related to any known families. • In a molecular phylogeny, it resolves as a distinct sister to the rest of known nudibranchs. • The species is bioluminescent and represents the third independent origin of bioluminescence among nudibranchs.

Source: Deep Sea Research Part I Oceanographic Research Papers

DOI: 10.1016/j.dsr.2024.104414

Authors: Bruce H. Robison, Steven H.D. Haddock

Institutions: Monterey Bay Aquarium Research Institute, University of California, Santa Cruz

Language: English

Topic: Marine Biology and Ecology Research

Subfield: Oceanography

Field: Earth and Planetary Sciences

Domain: Physical Sciences

SDG: Life below water

Open Access status: hybrid

Estimated APC paid: $3,000