Gyrodactylus anguillae and Vibrio vulnificus infections affecting cultured eel, Anguilla anguilla

Authors

  • Mamdouh Yousif Elgendy Department of Hydrobiology, National Research Centre - Egypt. P.O. Box 12311, 33 El Bohouth St., Dokki- Giza - Egypt.
  • Amany Mohamed Kenawy Department of Hydrobiology, National Research Centre - Egypt. P.O. Box 12311, 33 El Bohouth St., Dokki- Giza - Egypt.
  • Ahmed E Noor El-Deen Department of Hydrobiology, National Research Centre - Egypt. P.O. Box 12311, 33 El Bohouth St., Dokki- Giza - Egypt.

DOI:

https://doi.org/10.14295/cs.v7i1.1248

Keywords:

concurrent infections, European eel, monogenean, mortalities, vibrios

Abstract

Gyrodactylus anguillae and Vibrio vulnificus are pathogens of critical significance in anguilliculture. Both agents were involved in mortalities affecting earthen pond cultured European eel, Anguilla anguilla, in Egypt during the period extended from June to September 2014. Moribund eels showed excessive slimy mucus and haemorrhages on the external body surface. All investigated eels were parasitized with the monogenean, Gyrodactylus anguillae. Majority of specimens 93.3 % were concomitantly found to be infected with V. vulnificus. No other parasitic or bacterial infections were noticed in the investigated fish samples. V. vulnificus was detected in Gyrodactylus anguillae homogenates collected from diseased fish. Bacterial isolates were confirmed by polymerase chain reaction (PCR). G. anguillae were demonstrated in skin and gills histopathological sections. Varieties of circulatory, proliferative as well as degenerative changes were noticed in haemopoietic tissues. It was concluded that G. anguillae presumably enhanced eels vulnerability to V. vulnificus infections through providing portals of entry as well as acting as mechanical vectors.

Downloads

Download data is not yet available.

Author Biographies

Mamdouh Yousif Elgendy, Department of Hydrobiology, National Research Centre - Egypt. P.O. Box 12311, 33 El Bohouth St., Dokki- Giza - Egypt.

Department of Hydrobiology National Research Centre Egypt

PhD Fish Diseases and Management Researcher

orcid.org/0000-0003-1305-377X

Amany Mohamed Kenawy, Department of Hydrobiology, National Research Centre - Egypt. P.O. Box 12311, 33 El Bohouth St., Dokki- Giza - Egypt.

Assistant professor Department of Hydrobiology

Ahmed E Noor El-Deen, Department of Hydrobiology, National Research Centre - Egypt. P.O. Box 12311, 33 El Bohouth St., Dokki- Giza - Egypt.

Assistant professor Department of Hydrobiology

Downloads

Published

2016-05-10

How to Cite

Elgendy, M. Y., Kenawy, A. M., & Noor El-Deen, A. E. (2016). Gyrodactylus anguillae and Vibrio vulnificus infections affecting cultured eel, Anguilla anguilla. Comunicata Scientiae, 7(1), 1–11. https://doi.org/10.14295/cs.v7i1.1248

Issue

Vol. 7 No. 1 (2016)

Section

Original Article

License

All articles published may be reproduced or utilized in any form or by any means whether specified Comunicata Scientiae, author(s), volume, pages and year. The authors are responsible for all the statements and concepts contained in the article.