New records of deep-sea barnacles (Cirripedia: Thoracica: Scalpelliformes) from the Clarion-Clipperton region, Pacific Ocean

Poltarukha, O. P.; Melnik, V. F.

doi:10.11646/zootaxa.3297.1.2

Cited by 3 publications

(3 citation statements)

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“…Like, C. cf. novaezelandiae it differs morphologically from C. tortilum , reported from the CCZ by Poltarukha and Mel’Nik (2012) , in the form of the inframedian latus. The type locality of C. albatrossianum is off Cape Hatteras, in the northwest Atlantic, at ~ 3740 m depth, but it has been reported for the North Atlantic, Gulf of Mexico, and Indian Ocean between 760 and 4180 m depth ( Zevina and Poltarukha 2014 ).…”

Section: Resultsmentioning

confidence: 59%

“…The sequence for the 18S gene is similar to sequences from other species within the same family. Another species within the genus, C. tortilum (Zevina, 1973), originally described from the Indian Ocean at 2760 m depth has also been recorded for the CCZ at similar depths (4872–4877 m depth; Poltarukha and Mel’Nik 2012 ). In C. tortilum , the inframedian latus’ umbo is conspicuously displaced laterally away from the midline.…”

Section: Resultsmentioning

confidence: 93%

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Benthic megafauna of the western Clarion-Clipperton Zone, Pacific Ocean

Bribiesca‐Contreras¹,

Dahlgren²,

Amon³

et al. 2022

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There is a growing interest in the exploitation of deep-sea mineral deposits, particularly on the abyssal seafloor of the central Pacific Clarion-Clipperton Zone (CCZ), which is rich in polymetallic nodules. In order to effectively manage potential exploitation activities, a thorough understanding of the biodiversity, community structure, species ranges, connectivity, and ecosystem functions across a range of scales is needed. The benthic megafauna plays an important role in the functioning of deep-sea ecosystems and represents an important component of the biodiversity. While megafaunal surveys using video and still images have provided insight into CCZ biodiversity, the collection of faunal samples is needed to confirm species identifications to accurately estimate species richness and species ranges, but faunal collections are very rarely carried out. Using a Remotely Operated Vehicle, 55 specimens of benthic megafauna were collected from seamounts and abyssal plains in three Areas of Particular Environmental Interest (APEI 1, APEI 4, and APEI 7) at 3100–5100 m depth in the western CCZ. Using both morphological and molecular evidence, 48 different morphotypes belonging to five phyla were found, only nine referrable to known species, and 39 species potentially new to science. This work highlights the need for detailed taxonomic studies incorporating genetic data, not only within the CCZ, but in other bathyal, abyssal, and hadal regions, as representative genetic reference libraries that could facilitate the generation of species inventories.

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Section: Resultsmentioning

confidence: 59%

Section: Resultsmentioning

confidence: 93%

Benthic megafauna of the western Clarion-Clipperton Zone, Pacific Ocean

Bribiesca‐Contreras¹,

Dahlgren²,

Amon³

et al. 2022

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“…nov. can be distinguished from A. gryllum by the linkage of the bilateral carinolatus (single-intersected vs. multi-intersected), the inferior angle of the mandible (with bunched blunt spicules vs. bifid, with dispersive small teeth), and the peduncle (encompassing elongated and produced scales vs. scattering small oval scales); moreover, A. gryllum is endemic to Australia and is found at a depth of 4850 m (Zevina, 1981b;Jones, 2012). The new species can be distinguished from A. radiatum by the ornamentation of the inframedian latus (with vs. without longitudinal ridges), the linkage of the bilateral carinolatus (single-intersected vs. multiply interdigitated), and the inferior angle of the mandible (with bunched blunt spicules vs. strongly denticulate); A. radiatum was reported in the Mid-Pacific Mountains (18 • 30 N, 179 • 36 W) and the Clarion-Clipperton region (13 • 55.612 N, 129 • 05.519 W) at a depth of 1413-4680 m (Rao and Newman, 1972;Poltarukha and Mel'nik, 2012). In addition, A. angularum sp.…”

Section: Discussionmentioning

confidence: 99%

Integrative Taxonomy Reveals Two New Species of Stalked Barnacle (Cirripedia, Thoracica) From Seamounts of the Western Pacific With a Review of Barnacles Distributed in Seamounts Worldwide

Gan¹,

Xu²,

Li³

et al. 2020

Front. Mar. Sci.

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Dozens of samples of stalked barnacles were collected from deep-sea seamounts of the tropical western Pacific by remotely operated vehicles during two expeditions in 2017 and 2018. Integrative taxonomy indicates that they represent two new species belonging to the families Scalpellidae and Poecilasmatidae, respectively. In terms of morphology, Arcoscalpellum angularum sp. nov. is distinguished from congeneric species by the angular processes on the dorsum of its soft body and the absence of a caudal appendage, whereas Glyptelasma robustum sp. nov. differs from its congeners in its robust peduncle, semicircular concaved carina, and long filamentary appendages. The validity of the two new species is supported by genetic analyses inferred from COI gene sequences and geographic distribution. To date, very few seamounts in the oceans have been investigated for scientific purposes, and records about barnacles inhabiting seamounts are chaotic. A literature search reveals about 125 barnacle species recorded in seamounts mainly in the eastern and western regions of the Pacific Ocean. Existing data are insufficient for research on species speciation and diffusion; still more credible data on the distribution of barnacles in seamounts should be collected.

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