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Morphological and molecular study of Longicollum pagrosomi Yamaguti, 1935 (Acanthocephala: Pomphorhynchidae) from the barred knifejaw Oplegnathus fasciatus (Temminck & Schlegel) (Perciformes: Oplegnathidae) in the East China Sea

Abstract

Longicollum pagrosomi Yamaguti, 1935 (Acanthocephala: Pomphorhynchidae) collected from the barred knifejaw Oplegnathus fasciatus (Temminck & Schlegel) (Perciformes: Oplegnathidae) in the East China Sea (off Zhoushan Islands) was studied using light and scanning electron microscopy. The SEM observations revealed for the first time the presence of about 28 well-developed sensory papillae arranged in a circle on the copulatory bursa. In addition, L. pagrosomi was characterised using molecular methods by sequencing of the internal transcribed spacer (ITS) of the ribosomal DNA based on the newly collected material. Longicollum pagrosomi is the first species of the genus with the ITS region sequenced for the purpose of species identification. These new morphological and molecular data contributed to a reliable and accurate specific identification and differentiation of species.

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Acknowledgements

The authors wish to thank Dr. Takashi Iwaki (Meguro Parasitology Museum, Tokyo, Japan) and Dr. Hideo Hasegawa (Faculty of Medicine, Oita University, Oita, Japan) for providing useful literature.

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Correspondence to Liang Li.

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The authors declare that they have no conflict of interest.

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All applicable institutional, national and international guidelines for the care and use of animals were followed.

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Li, L., Yang, Y. & Zhang, L. Morphological and molecular study of Longicollum pagrosomi Yamaguti, 1935 (Acanthocephala: Pomphorhynchidae) from the barred knifejaw Oplegnathus fasciatus (Temminck & Schlegel) (Perciformes: Oplegnathidae) in the East China Sea. Syst Parasitol 94, 255–261 (2017). https://doi.org/10.1007/s11230-016-9689-x

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Keywords

  • Internal Transcribe Spacer
  • Cement Gland
  • Trunk Length
  • Posterior Testis
  • Sensory Papilla