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Myxobolus honghuensis n. sp. (Myxosporea: Bivalvulida) parasitizing the pharynx of allogynogenetic gibel carp Carassius auratus gibelio (Bloch) from Honghu Lake, China

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Abstract

Myxobolus honghuensis n. sp. is described from allogynogenetic gibel carp Carassius auratus gibelio (Bloch), during a survey of myxosporean parasites in Honghu Lake, Hubei Province, China. It is characterized by the presence of round plasmodia of 5–12 mm in diameter in the pharynx of host. Mature spores of M. honghuensis were pyriform in frontal view and anterior pointed with bluntly round posterior, they measured 16.9 ± 0.5 (15.1–19.5) μm long, 10.4 ± 0.4 (9.0–11.3) μm wide, and 8.4 ± 0.4 (7.9–9.1) μm thick. Two polar capsules were pyriform and slightly unequal with larger polar capsule 8.4 ± 0.4 (7.6–10.2) μm × 3.9 ± 0.2 (3.0–4.5) μm and smaller capsule 7.9 ± 0.2 (7.0–9.3) μm × 3.7 ± 0.3 (2.8–4.1) μm. Polar filaments coiled with seven to eight turns. Both morphology and DNA sequence data revealed that M. honghuensis n. sp. was distinct from other described Myxobolus species. Phylogenetic analysis placed M. honghuensis n. sp. in a clade of gill-infecting myxobolids.

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Acknowledgements

The authors thank Gao Yu for his help with the drawing of spores. This study was supported by the Nature Science Foundation of China (Project Number 30800096), the New Teacher Foundation of Chinese Education Department (Project Number 200805041025), the Natural Science Foundation of Hubei Province (Project Number U2008CDB078), the Huazhong Agricultural University Scientific & Technological Self-innovation Foundation (Project Number 2009SC017), and the Fundamental research funds for the central universities (Project Number 52902-0900202037).

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Correspondence to Z. M. Gu.

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Liu, Y., Whipps, C.M., Gu, Z.M. et al. Myxobolus honghuensis n. sp. (Myxosporea: Bivalvulida) parasitizing the pharynx of allogynogenetic gibel carp Carassius auratus gibelio (Bloch) from Honghu Lake, China. Parasitol Res 110, 1331–1336 (2012). https://doi.org/10.1007/s00436-011-2629-4

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Keywords

  • Polar Capsule
  • Polar Filament
  • Gibel Carp
  • Honghu Lake
  • Myxobolus Species