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A new species of Clausidium Kossmann, 1874 (Copepoda: Cyclopoida) associated with ghost shrimps from the Persian Gulf, including female-male interlocking mechanisms and remarks on host specificity

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Abstract

A new clausidiid copepod was found associated with the ghost shrimp Neocallichirus jousseaumei (Nobili) in the Persian Gulf, on the Iranian coast. The new species shares the armature formula of swimming legs 2 to 4 with C. persiaensis, but can be easily distinguished from its congeners by unique characteristics of the females: the prominent spine on endopodal segment 1 of the antenna, the armature of the maxilliped, and the elongated basis of the swimming legs. Distinguishing features observed in males include the distinct projections on the maxilliped and the armature of legs 1 and 4. In addition to traditional light microscopy-based descriptions, confocal laser scanning microscopy (CLSM) was used to obtain high resolution images and 3-D reconstructions of entire copepods. Structures of taxonomic importance that exhibit complex shapes (male maxilliped and female urosome) were scanned to generate 3-D prints that gave valuable insights about female/male interlocking mechanisms. The taxonomic status and host specificity of Clausidium spp. are discussed and a key to valid species is provided.

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Acknowledgements

We are very grateful to Professor Dr Pedro Martinez Arbizu from Senckenberg am Meer, German Center for Marine Biodiversity Research, Wilhelmshaven for help and encouragement during this study. The authors express their gratitude to Dr Abdolvahab Maghsoudlou from Iranian National Institute for Oceanography and Atmospheric Science for his cooperation in this study. This is publication number 42 based on data from the Senckenberg am Meer Confocal Laser scanning Microscope Facility

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Authors and Affiliations

  1. Department of Marine Biological Sciences, Iranian National Institute for Oceanography and Atmospheric Science (INIOAS), Tehran, Iran

    Vahid Sepahvand

  2. Department of Biology, Faculty of Science, Razi University, 6714967346, Kermanshah, Iran

    Vahid Sepahvand

  3. Senckenberg am Meer, DZMB - German Centre for Marine Biodiversity Research, Südstrand 44, 26382, Wilhelmshaven, Germany

    Terue Cristina Kihara

  4. Department of Life Sciences, Natural History Museum, Cromwell Road, London, SW7 5BD, UK

    Geoffrey Allan Boxshall

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  1. Vahid Sepahvand
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  2. Terue Cristina Kihara
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  3. Geoffrey Allan Boxshall
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Correspondence to Vahid Sepahvand.

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This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as C767274E-BA3B-4EBA-A295-9679C90A9C6C. This article was published as an Online First article on the online publication date shown on this page. The article should be cited by using the doi number. This is the Version of Record.

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Sepahvand, V., Kihara, T.C. & Boxshall, G.A. A new species of Clausidium Kossmann, 1874 (Copepoda: Cyclopoida) associated with ghost shrimps from the Persian Gulf, including female-male interlocking mechanisms and remarks on host specificity. Syst Parasitol 96, 171–189 (2019). https://doi.org/10.1007/s11230-019-09839-x

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