Agricultural Science

Agricultural Science

ISSN: 2291-4471 (Print)    ISSN: 2291-448X (Online)

Volume 1 (2013), No. 2, Pages 10-17

DOI: 10.12735/as.v1i2p10

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Saprolegniasis in Freshwater Catfishes Sold in Fish Markets in Asaba, Southern Nigeria

Agatha Arimiche Nwabueze1  N. F. Olele1  J. K. Ekelemu1 

1Department of Fisheries, Delta State University, Asaba Campus, Asaba, Nigeria

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The prevalence of saprolegniasis in freshwater catfishes sold in fish markets in Asaba was investigated. Two hundred and sixty-five freshly caught table-sized freshwater catfishes namely: Clarias anguillaris (Pellegrin), Heterobranchus bidorsalis (Geoffrey St. Hilaire), Synodontis clarias (Linnaeus), Schilbe mystus (Linnaeus) and Bagrus bayad (Ruppell) were used for the study which lasted for three months. Fish samples bought on a weekly basis from two major markets (Ogbeogonogo and Cable point) were transported to the laboratory and examined by smear scrapping of mucus on skin of fish for saprolegniasis and possible secondary bacterial and protozoal infections using routine procedures. Isolates from cultures revealed the presence of saprolegniasis, scyphidian flora and bacterial infections of Staphylococcus aureus and Escherichia coil. Out of 265 catfishes examined, 46 (17.4%) had saprolegniasis. This prevalence of infection was not significant (P >0.05). The number of fungal zoospores from saprolegniasis ulcerative lesion was however significantly (P < 0.05) higher than those of the control which were free from Saprolegnia infection. A significant (P<0. 05) number, 25 (54%) of Saprolegnia infected catfishes had scyphidian flora. S. aureus was isolated from all catfishes examined while E. coli was found in 193 (72.8%) of the fishes. Fish culturist and fresh fish handlers should maintain good water quality for cultured fishes and a high standard of personal hygiene to avoid the health implications of fish diseases.

Keywords: Asaba, catfishes, fish markets, Nigeria, saprolegniasis

To Cite this Article: Nwabueze, A. A., Olele, N. F., & Ekelemu, J. K. (2013). Saprolegniasis in freshwater catfishes sold in fish markets in Asaba, Southern Nigeria. Agricultural Science, 1(2), 10-17.

Copyright © A. A. Nwabueze et al.

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This article is published under license to Science and Education Centre of North America. This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License.

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Saprolegniasis in Freshwater Catfishes Sold in Fish Markets in Asaba, Southern Nigeria