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Diseases of Aquatic Organisms

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DAO 148:145-151 (2022)  -  DOI: https://doi.org/10.3354/dao03654

NOTE
First case of Coxiella burnetii infection in Palaemonetes sinensis cultured in Liaoning, China

Xiaocen Lu1, Hongli Ma1, Jiannan Liu1, Na Sun2, Jieying Yu1, Zhanquan Yang2, Sicong Guo1, Luxi Huang1, Shigen Ye1,*

1Aquatic Animal Hospital of Dalian Ocean University, Dalian Ocean University, Dalian, Liaoning 116023, PR China
2Panjin Guanghe Crab Industry Co., Ltd., Panjin, Liaoning 124200, PR China
*Corresponding author:

ABSTRACT: The Palaemonetes sinensis aquaculture industry in Panjin City, Liaoning Province, China, experienced heavy losses in October 2018. Morbidity of cultured shrimp reached 50% and was characterized by cloudiness of muscle and the gradual spread of disease within the population. When the infection was mild, histopathological examinations revealed that the muscle cells contained a considerable number of microorganisms. In extreme cases, the structure of the hepatopancreatic glandular and muscle fiber was obscured or even vanished. Electron microscope observations revealed the presence of granular cytoplasmic inclusions in cells from hepatopancreas and muscle tissues. The 16S rDNA sequence of the intracytoplasmic organism was 94.7% identity to that of Coxiella burnetii. This is the first report of infection by C. burnetii in P. sinensis.


KEY WORDS: Palaemonetes sinensis · Coxiella burnetii · Histopathology


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Cite this article as: Lu X, Ma H, Liu J, Sun N and others (2022) First case of Coxiella burnetii infection in Palaemonetes sinensis cultured in Liaoning, China. Dis Aquat Org 148:145-151. https://doi.org/10.3354/dao03654

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