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<p><i>Chaunocephalus ferox</i>, a trematode parasite from the family Echinostomatidae, poses significant health risks to storks by causing severe intestinal damage. The aim of this study is to investigate the infection of <i>Ch. ferox</i> in Oriental storks (<i>Ciconia boyciana</i>) and assess its potential threat to their health, while exploring its prevalence in different host habitats and prey species. Morphological and molecular analyses were conducted on trematode specimens and its eggs in fecal samples of Oriental storks collected from wintering habitats (Poyang Lake), stopover sites (Bohai Bay), and breeding grounds (Sanjiang Plain), as well as metacercaria in crucian carp collected from stopover sites. A high <i>Ch. ferox</i> prevalence of 96.3% was observed in 27 deceased storks, with the infected individuals showing granulomatous intestinal damage such as nodular and perforation. Additionally, <i>Ch. ferox</i> egg was detected in environmental fecal samples from wintering habitats (1.4%), stopover sites (5.4%), and breeding grounds (5.6%), as well as in crucian carps (3.1%). These findings suggest that <i>Ch. ferox</i> prevalent in Oriental storks related to consumption of infected crucian carp. The high infection rate of <i>Ch. ferox</i> (96.3%) in deceased storks, compared to the lower infection rate (1.4-5.6%) in field individuals (detected the parasite eggs in the environment fecal samples of storks), indicates that <i>Ch. ferox</i> may have an impact on the health of Oriental storks with high probability. However, its direct role in mortality of stork warrants further investigation.</p>

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Chaunocephalus ferox (Digenea: Echinostomatidae): a potential threat to the health of Oriental stork (Ciconia boyciana)

  • 期刊论文

  • 发表日期：

    2025年5月21日

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  • Mengchao Zhou,
  • Mingyuan Yu,
  • Mengqiu Liu,
  • Hongrui Liang,
  • Mengru Zhao,
  • Yaxian Lu,
  • Siyuan Qin,
  • Xiaotian Zhang,
  • Hongyan Yu,
  • Hang Tian,
  • Wanting Li,
  • Feiluran Maimaiti,
  • Weiyan Yin,
  • Lei Han,
  • Lihong Tian,
  • Yu Xu,
  • Zhijun Hou

摘要

Chaunocephalus ferox, a trematode parasite from the family Echinostomatidae, poses significant health risks to storks by causing severe intestinal damage. The aim of this study is to investigate the infection of Ch. ferox in Oriental storks (Ciconia boyciana) and assess its potential threat to their health, while exploring its prevalence in different host habitats and prey species. Morphological and molecular analyses were conducted on trematode specimens and its eggs in fecal samples of Oriental storks collected from wintering habitats (Poyang Lake), stopover sites (Bohai Bay), and breeding grounds (Sanjiang Plain), as well as metacercaria in crucian carp collected from stopover sites. A high Ch. ferox prevalence of 96.3% was observed in 27 deceased storks, with the infected individuals showing granulomatous intestinal damage such as nodular and perforation. Additionally, Ch. ferox egg was detected in environmental fecal samples from wintering habitats (1.4%), stopover sites (5.4%), and breeding grounds (5.6%), as well as in crucian carps (3.1%). These findings suggest that Ch. ferox prevalent in Oriental storks related to consumption of infected crucian carp. The high infection rate of Ch. ferox (96.3%) in deceased storks, compared to the lower infection rate (1.4-5.6%) in field individuals (detected the parasite eggs in the environment fecal samples of storks), indicates that Ch. ferox may have an impact on the health of Oriental storks with high probability. However, its direct role in mortality of stork warrants further investigation.