A new species of Breviconia Conroy-Dalton & Huys, 2000 (Copepoda: Harpacticoida: Ancorabolidae Sars) from the Bering Sea, northern Pacific Ocean (Russia)
Abstract
The finding of Breviconia andrei sp. nov. in the Russian Bering Sea enabled the clear-cut phylogenetic characterization of the former monotypic genus Breviconia Conroy-Dalton & Huys, 2000 as a monophylum. Comparison of the new species with B. australis (George, 1998) and other members of the subfamily Ancorabolinae Sars, 1909 yielded four autapomorphies that unambiguously support the monophyletic state of Breviconia: (1) an elongated and approximately 90°-curved mandibular gnathobase, (2) reduction of the maxillar endopod, (3) maxillar endites carrying 2 instead of 3 setae, and (4) loss of the minute seta on the maxillipedal claw. For B. andrei sp. nov., two autapomorphies could be detected, namely, (1) the development of dorsal tubercles on the P5-bearing body somite and (2) the remarkable elongation of the first endopodal segment of the first swimming leg that is twice as long as the whole exopod. Of particular interest is the presence of a 3-segmented endopod in the third swimming leg of the male of B. andrei sp. nov. It disproves the current assumption that the Ancorabolinae are characterized by (among others) the derived presence of an only 2-segmented endopod in the male’s third swimming leg.
References
Azovsky A.I., Chertoprud E.S., Garlitska L.A., Mazei Y.A. & Tikhonenkov D.V. 2020. Does size really matter in biogeography? Patterns and drivers of global distribution of marine micro- and meiofauna. Journal of Biogeography 47: 1180–1192. https://doi.org/10.1111/jbi.13771
Brady G.S. 1918. Copepoda. Scientific Report of the Australasian Antarctic Expedition 5 (3): 1–48.
Conroy-Dalton S. & Huys R. 2000. Systematics and phylogeny of the Ancorabolidae (Copepoda: Harpacticoida). I. The Ancorabolus-lineage, with the description of three new genera. Cahiers de Biologie marine 41 (4): 343–397.
George K.H. 1998. A new species of Ancorabolidae (Copepoda, Harpacticoida) from the Beagle Channel (Chile). Hydrobiologia 379: 23–32. https://doi.org/10.1023/A:1003204621613
George K.H. 2013. Faunistic research on metazoan meiofauna from seamounts – a review. Meiofauna Marina 20: 1–32.
George K.H. 2017. Phylogeny of the taxon Paralaophontodes Lang (Copepoda, Harpacticoida, Laophontodinae), including species descriptions, chorological remarks, and a key to species. Zoosystematics and Evolution 93 (2): 211–241. https://doi.org/10.3897/zse.93.11314
George K.H. 2020. Restructuring the Ancorabolidae Sars (Copepoda, Harpacticoida) and Cletodidae T. Scott, with a new phylogenetic hypothesis regarding the relationships of the Laophontoidea T. Scott, Ancorabolidae and Cletodidae. Zoosystematics and Evolution 96 (2): 455–498. https://doi.org/10.3897/zse.96.51349
George K.H., Veit-Köhler G., Martínez Arbizu P., Seifried S., Rose A., Willen E., Bröhldick K., Corgosinho P.H.C., Drewes J., Menzel L., Moura G. & Schminke H.K. 2014. Community structure and species diversity of Harpacticoida (Crustacea: Copepoda) at two sites in the deep sea of the Angola Basin (Southeast Atlantic). Organisms, Diversity & Evolution 14 (1): 57–73. https://doi.org/10.1007/s13127-013-0154-2
George K.H., Pointner J. & Packmor J. 2018. The benthic Copepoda (Crustacea) of Anaximenes Seamount (eastern Mediterranean Sea) – Community structure and species distribution. Progress in Oceanography 165: 299–316. https://doi.org/10.1016/j.pocean.2018.06.006
Gheerardyn H. & Veit-Köhler G. 2009. Diversity and large-scale biogeography of Paramesochridae (Copepoda, Harpacticoida) in South Atlantic Abyssal Plains and the deep Southern Ocean. Deep-Sea Research I 56: 1804–1815. https://doi.org/10.1016/j.dsr.2009.05.002
Huys R. & Boxshall G.A. 1991. Copepod Evolution. The Ray Society 159, London.
Koller S. & George K.H. 2011. Description of a new species of Zosime Boeck, 1872 (Copepoda: Harpacticoida: Zosimeidae) from the Great Meteor Seamount, representing one of the few eurybathic Harpacticoida among the distinct plateau and deep-sea assemblages. Meiofauna Marina 19: 109–126.
Mahatma R. 2009. Meiofauna communities of the Pacific Nodule Province: abundance, diversity and community structure. PhD thesis, Carl von Ossietzky-Universität, Oldenburg, Germany.
Menzel L., George K.H. & Martínez Arbizu P. 2011. Submarine ridges do not prevent large-scale dispersal of abyssal fauna: A case study of Mesocletodes Crustacea, Copepoda, Harpacticoida). Deep-Sea Research I 58: 839–864. https://doi.org/10.1016/j.dsr.2011.05.008
Packmor J. & Riedl T. 2016. Records of Normanellidae Lang, 1944 (Copepoda, Harpacticoida) from Madeira Island support the hypothetical role of seamounts and oceanic islands as stepping stones in the dispersal of marine meiofauna. Marine Biodiversity 46: 861–877. https://doi.org/10.1007/s12526-016-0448-7
Packmor J., Müller F. & George K.H. 2015. Oceanic islands and seamounts as staging posts for Copepoda Harpacticoida (Crustacea) – Shallow-water Paramesochridae Lang, 1944 from the North-East Atlantic Ocean, including the (re-)description of three species and one subspecies from the Madeiran Archipelago. Progress in Oceanography 131: 59–81. https://doi.org/10.1016/j.pocean.2014.11.012
Pointner K., Kihara T.C., Glatzel T. & Veit-Köhler G. 2013. Two new closely related deep-sea species of Paramesochridae (Copepoda, Harpacticoida) with extremely differing geographical range sizes. Marine Biodiversity 43: 293–319. https://doi.org/10.1007/s12526-013-0158-3
Richter K. & George K.H. 2019. Community structure of Harpacticoida and Canuelloida (Crustacea, Copepoda) on the Great Meteor Seamount (North-eastern Atlantic Ocean). Journal of the Marine Biological Association of the United Kingdom 99 (6): 1325–1342. https://doi.org/10.1017/S0025315419000444
Wells J.B.J. 2007. An annotated checklist and keys to the species of Copepoda Harpacticoida (Crustacea). Zootaxa 1568: 1–872.
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