Work

New light in the North Pacific: Two new species of Typhlotanaidae (Crustacea: Tanaidacea) from the Aleutian region

Year: 2025

Type: article

Abstract: The deep-sea paratanaoidean family Typhlotanaidae remains understudied, both taxonomically and phylogenetically, particularly in the North Pacific. This study examines previously undocumented representatives of the genus Typhlamia collected from the Aleutian region. Using an integrative approach that combines morphological analysis and, in one case, molecular data based on 18S rDNA sequences, we identify distinct lineages within the genus. The genetic data reveal a well-supported clade that is clearly separated from the other sequenced members of Typhlamia, suggesting the genus may be polyphyletic and in need of revision. Morphological characteristics further support the distinctiveness of the examined specimens. Their occurrence on either slope of the Aleutian Trench indicate that this region may act as a partial biogeographic barrier, while also hosting previously undocumented deep-sea diversity. These findings highlight the Aleutian region as an important area for understanding the evolution, dispersal, and hidden biodiversity of deep-sea peracarids. LSIDurn:lsid:zoobank.org:pub:8574DCBD-8E4A-40BC-914A-473DC69A4634.

Source: Progress In Oceanography

DOI: 10.1016/j.pocean.2025.103586

Authors: Marta Gellert, Magdalena Błażewicz, Graham J. Bird

Institution: University of Łódź

Language: English

Topic: Marine Biology and Ecology Research

Subfield: Oceanography

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,720

Funders: Narodowe Centrum Nauki, Nippon Foundation