First report of acanthocephalan parasite, Longicollum pagrosomi Yamaguti, 1935 in cultured red snapper (Lutjanus erythropterus) in Taiwan.

  title={First report of acanthocephalan parasite, Longicollum pagrosomi Yamaguti, 1935 in cultured red snapper (Lutjanus erythropterus) in Taiwan.},
  author={Li-Wu Cheng and Shreesha Rao and Pei-Chi Wang and Shih‐Chu Chen},
  journal={Journal of fish diseases},
For the first time, Longicollum pagrosomi Yamaguti, 1935, an acanthocephalan parasite, has been characterized with morphological, histopathological and molecular detail in farmed red snapper (Lutjanus erythropterus) in Taiwan. The diseased fish showed clinical signs of anorexia, emaciation and were gasping for air at the water's surface. Gross examination revealed extensive necrosis in the intestine and even penetration at the site of parasitic attachment, resulting in a large number of… 
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An Evaluation of the Genera Longicollum and Paralongicollum (Pomphorhynchidae: Acanthocephala) in Australia.

To confirm the identity of Longicollum edmondsi Golvan, 1969, Pomphorhynchidae Yamaguti, 1939, from Australia, the relevant specimens registered in Australian museums were examined.



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Longicollum pagrosomi is the first species of the genus with the ITS region sequenced for the purpose of species identification and new morphological and molecular data contributed to a reliable and accurate specific identification and differentiation of species.

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Severe inflammatory reaction at the submucosa, displacement of their sheaf, associated with oedema and mononuclear and eosinophilic infiltration were observed and complete desquamation of the intestinal epithelium with severe hyperplasia and hypertrofia of the goblet cells was showed.

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The new species can be distinguished from all others by the following combination of characters: proboscis shape and armature, short neck, trunk spined anteriorly and having two swellings with a narrow isthmus in between, long tubular lemnisci and six tubular cement glands.

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First report of confirms that L. garvieae-induced "warm water lactococcsis" can cause outbreaks of diseases in cage-cultured cobia.

The description of Paralongicollum nemacheili n. gen., n. sp. (Acanthocephala: Pomphorhynchidae) from freshwater fishes in Kazakh S.S.R.

Paralongicollum nemacheili n. gen., n. sp. is described from Salmo gairdneri Richardson and Nemacheilus stoliczkai Steindacher in Lake Kul'say in the basin of Lake Balkhash, Kazakh S.S.R. Its long

Morphometric and molecular characterisation of Tenuiproboscis keralensis n. sp. infecting marine and brackish water fishes from the south-west coast of India with a note on morphological plasticity

Morphology and morphometrics in combination with PCA, proboscis profiling and molecular analysis suggest the present acanthocephalan parasite is different from other described species of Tenuiproboscis, again indicating their conspecific nature.


In flounder, this parasite attaches in the terminal portion of the intestine, perforating its wall, with the proboscis, and protrudes into the peritoneal cavity of the fish, while the rest of the body remains in the lumen of the intestines.