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      A new genus and species of the family Pennellidae (Copepoda, Siphonostomatoida) infecting the Pacific viperfish Chauliodus macouni Translated title: Un nouveau genre et une nouvelle espèce de la famille Pennellidae (Copepoda, Siphonostomatoida) infectant le poisson-vipère du Pacifique Chauliodus macouni

      1 , * , 2 , 3

      Parasite

      EDP Sciences

      Copepoda; deep-sea; Pennellidae; taxonomy

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          Abstract

          A new genus and species of pennellid copepod, Protosarcotretes nishikawai n. g., n. sp., is described on the basis of an ovigerous female infecting a Pacific viperfish Chauliodus macouni collected from the deep-waters of Suruga Bay, Japan. The new genus exhibits the most plesiomorphic states in the first to fourth legs of pennellids, and is differentiated from two closely related pennellid genera Sarcotretes and Lernaeenicus by the morphology of the oral appendages. Two species of the genus Lernaeenicus are transferred to the new genus as Protosarcotretes multilobatus (Lewis, 1959) n. comb. and Protosarcotretes gnavus (Leigh-Sharpe, 1934) n. comb. The host specificity and life cycle of deep-sea pennellids are discussed. Sarcotretes scopeli Jungersen, 1911 and Cardiodectes bellottii (Richiardi, 1882) show low differentiated host-specificity, while P. nishikawai seems to be limited to the Stomiidae, which are rare hosts of pennellids, in contrast to the Myctophidae family. In the Pennellidae family, two patterns of the life cycle are found: with or without naupliar stages.

          Translated abstract

          Un nouveau genre et espèce de copépode Pennellidae, Protosarcotretes nishikawai n. g., n. sp., est décrit sur la base d’une femelle ovigère infectant le poisson-vipère du Pacifique Chauliodus macouni prélevé dans les eaux profondes de la baie de Suruga, au Japon. Le nouveau genre présente les états les plus plésiomorphes des appendices 1 à 4 des Pennellidae et se différencie de deux genres apparentés, Sarcotretes et Lernaeenicus, par la morphologie des appendices oraux. Deux espèces du genre Lernaeenicus sont transférées dans le nouveau genre comme Protosarcotretes multilobatus (Lewis, 1959) n. comb. et Protosarcotretes gnavus (Leigh-Sharpe, 1934) n. comb. La spécificité de l’hôte et le cycle de vie des Pennellidae profonds sont discutés. Sarcotretes scopeli Jungersen, 1911 et Cardiodectes bellottii (Richiardi, 1882) montrent une spécificité d’hôte peu différenciée, tandis que P. nishikawai semble être limité aux Stomiidae, rarement utilisés comme hôtes par les pennellidés, contrairement à la famille Myctophidae. Dans la famille Pennellidae, on retrouve deux types de cycle de vie, avec ou sans étapes nauplius.

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          Most cited references 42

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          Parasites in commercially-exploited cephalopods (Mollusca, Cephalopoda) in Spain: an updated perspective

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            Marine Parasitology

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              Host and site selection by larval stages and adults of the parasitic copepod Lernaeenicus sprattae (Sowerby) (Copepoda, Pennellidae) in the Oslofjord

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                Author and article information

                Journal
                Parasite
                Parasite
                parasite
                Parasite
                EDP Sciences
                1252-607X
                1776-1042
                2018
                9 February 2018
                : 25
                : ( publisher-idID: parasite/2018/01 )
                Affiliations
                [1 ] Takehara Station, Setouchi Field Science Center, Graduate School of Biosphere Science, Hiroshima University, 5-8-1 Minato-machi, Takehara, Hiroshima 725-0024 Japan
                [2 ] Research and Development Center for Submarine Resources, Environmental Impact Assessment Research Group, Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima-cho. Yokosuka, Kanagawa 237-0061 Japan
                [3 ] Izawa Marine Biological Laboratory, 795-16 Kannonji, Tsu, Mie 514-0062 Japan
                Author notes
                [* ]Corresponding author: ohtsuka@ 123456hiroshima-u.ac.jp
                Article
                parasite170136 10.1051/parasite/2018003
                10.1051/parasite/2018003
                5806539
                29424341
                © S. Ohtsuka et al., published by EDP Sciences, 2018

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                Page count
                Figures: 3, Tables: 2, Equations: 0, References: 50, Pages: 10
                Categories
                Research Article

                copepoda; deep-sea; pennellidae; taxonomy

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