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      Two new species of the genus Caligus (Crustacea, Copepoda, Siphonostomatoida) from the Sea of Japan, with a note on the establishment of a new species group

      , 1 , 2

      ZooKeys

      Pensoft Publishers

      caligid copepods, plankton, Platycephalus , sea lice, taxonomy

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          Abstract

          Abstract

          Two new species of Caligus are described from the Japanese coast of the Sea of Japan. Caligus chinglonglini sp. nov. is based on a male specimen found in a plankton sample, whereas C. kajii sp. nov. was collected from the body surface of the host flathead Platycephalus sp. These two new species can be assigned to a distinct species group, the pseudorhombi group newly named and defined by the morphology of the genital complex in both sexes, and by the structure and armature of legs 2 and 4. The species group so far accommodates 19 species including these two new species. The morphology, host specificity and zoogeography of the species group are discussed herein and keys to species groups of Caligus and to species of the C. pseudorhombi species group are provided.

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          Most cited references 43

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          The global economic cost of sea lice to the salmonid farming industry.

           Mark Costello (2009)
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            A Method for Studying the External Anatomy of Copepods

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              A review of the impact of parasitic copepods on marine aquaculture

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                Author and article information

                Contributors
                Journal
                Zookeys
                Zookeys
                2
                urn:lsid:arphahub.com:pub:45048D35-BB1D-5CE8-9668-537E44BD4C7E
                urn:lsid:zoobank.org:pub:91BD42D4-90F1-4B45-9350-EEF175B1727A
                ZooKeys
                Pensoft Publishers
                1313-2989
                1313-2970
                2019
                02 December 2019
                : 893
                : 91-113
                Affiliations
                [1 ] Graduate School of Integrated Sciences for Life, Hiroshima University, Kagamiyama 1-4-4, Higashi-Hiroshima, Hiroshima 739-8528, Japan Hiroshima University Hiroshima Japan
                [2 ] Department of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK Natural History Museum London United Kingdom
                Author notes
                Corresponding author: Susumu Ohtsuka ( ohtsuka@ 123456hiroshima-u.ac.jp )

                Academic editor: D. Defaye

                Article
                46923
                10.3897/zookeys.893.46923
                6901611
                Susumu Ohtsuka, Geoffrey A. Boxshall

                This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                Funding
                Japan Society of Promotion of Science
                Categories
                Research Article
                Copepoda
                Siphonostomatoida
                Systematics
                Cenozoic
                Asia

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