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Response of crayfish, Procambarus clarkii, haemocytes infected by white spot syndrome virus

Identifieur interne : 00A239 ( Main/Exploration ); précédent : 00A238; suivant : 00A240

Response of crayfish, Procambarus clarkii, haemocytes infected by white spot syndrome virus

Auteurs : Z. Shi [République populaire de Chine] ; H. Wang [République populaire de Chine] ; J. Zhang [République populaire de Chine] ; Y. Xie [République populaire de Chine] ; L. Li [République populaire de Chine] ; X. Chen [République populaire de Chine] ; B-F Edgerton [Australie] ; J-R Bonami [France]

Source :

RBID : ISTEX:9AC44E101CBEEB105FA453E721D0919532EA54C0

English descriptors

Abstract

White spot syndrome virus (WSSV) is a serious pathogen of aquatic crustaceans. Little is known about its transmission in vivo and the immune reaction of its hosts. In this study, the circulating haemocytes of crayfish, Procambarus clarkii, infected by WSSV, and primary haemocyte cultures inoculated with WSSV, were collected and observed by transmission electron microscopy and light microscopy following in situ hybridization. In ultra‐thin sections of infected haemocytes, the enveloped virions were seen to be phagocytosed in the cytoplasm and no viral particles were observed in the nuclei. In situ hybridization with WSSV‐specific probes also demonstrated that there were no specific positive signals present in the haemocytes. Conversely, strong specific positive signals showed that WSSV replicated in the nuclei of gill cells. As a control, the lymphoid organ of shrimp, Penaeus monodon, infected by WSSV was examined by in situ hybridization which showed that WSSV did not replicate within the tubules of the lymphoid organ. In contrast to previous studies, it is concluded that neither shrimp nor crayfish haemocytes support WSSV replication.

Url:
DOI: 10.1111/j.1365-2761.2004.00607.x


Affiliations:


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