New species of Scalibregmatidae (Annelida) from slope and abyssal depths off eastern Australia

Seven new species of Scalibregmatidae are described from deep waters off the east coast of Australia. Samples were collected as part of the RV Investigator voyage IN2017_V03 in May/June 2017 using a Brenke sledge and 0.25 m2 box core. Sample depths reported in the present study were from the lower c...

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Main Author: James A. Blake
Format: Article
Language:English
Published: Australian Museum 2023-05-01
Series:Records of the Australian Museum
Subjects:
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author James A. Blake
author_facet James A. Blake
author_sort James A. Blake
collection DOAJ
description Seven new species of Scalibregmatidae are described from deep waters off the east coast of Australia. Samples were collected as part of the RV Investigator voyage IN2017_V03 in May/June 2017 using a Brenke sledge and 0.25 m2 box core. Sample depths reported in the present study were from the lower continental slope of about 2450 m to abyssal depths up to 4280 m. These collections provide the first scalibregmatid polychaetes to be described from deep water off Australia. The new species of Scalibregmatidae are in the genera Asclerocheilus (1), Axiokebuita (1), Oligobregma (4), and Pseudoscalibregma (1). Each of the new species is compared and contrasted with their known congeners. Asclerocheilus and Oligobregma are the largest genera of the family in terms of numbers of species; the known species of each of these genera are tabulated and compared. The Scalibregmatidae known from abyssal depths of about 3000 m and greater are reviewed and discussed.
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spelling doaj.art-ab7b50a8839e4b539a3e3634fc9a26382023-05-17T03:40:44ZengAustralian MuseumRecords of the Australian Museum0067-19752201-43492023-05-0175327129810.3853/j.2201-4349.75.2023.1827New species of Scalibregmatidae (Annelida) from slope and abyssal depths off eastern AustraliaJames A. Blake0https://orcid.org/0000-0001-8217-9769Museum of Comparative ZoologySeven new species of Scalibregmatidae are described from deep waters off the east coast of Australia. Samples were collected as part of the RV Investigator voyage IN2017_V03 in May/June 2017 using a Brenke sledge and 0.25 m2 box core. Sample depths reported in the present study were from the lower continental slope of about 2450 m to abyssal depths up to 4280 m. These collections provide the first scalibregmatid polychaetes to be described from deep water off Australia. The new species of Scalibregmatidae are in the genera Asclerocheilus (1), Axiokebuita (1), Oligobregma (4), and Pseudoscalibregma (1). Each of the new species is compared and contrasted with their known congeners. Asclerocheilus and Oligobregma are the largest genera of the family in terms of numbers of species; the known species of each of these genera are tabulated and compared. The Scalibregmatidae known from abyssal depths of about 3000 m and greater are reviewed and discussed. asclerocheilusaxiokebuitaoligobregmapseudoscalibregmapolychaetesbenthosdeep seanew species
spellingShingle James A. Blake
New species of Scalibregmatidae (Annelida) from slope and abyssal depths off eastern Australia
Records of the Australian Museum
asclerocheilus
axiokebuita
oligobregma
pseudoscalibregma
polychaetes
benthos
deep sea
new species
title New species of Scalibregmatidae (Annelida) from slope and abyssal depths off eastern Australia
title_full New species of Scalibregmatidae (Annelida) from slope and abyssal depths off eastern Australia
title_fullStr New species of Scalibregmatidae (Annelida) from slope and abyssal depths off eastern Australia
title_full_unstemmed New species of Scalibregmatidae (Annelida) from slope and abyssal depths off eastern Australia
title_short New species of Scalibregmatidae (Annelida) from slope and abyssal depths off eastern Australia
title_sort new species of scalibregmatidae annelida from slope and abyssal depths off eastern australia
topic asclerocheilus
axiokebuita
oligobregma
pseudoscalibregma
polychaetes
benthos
deep sea
new species
work_keys_str_mv AT jamesablake newspeciesofscalibregmatidaeannelidafromslopeandabyssaldepthsoffeasternaustralia