fluorescens as dominant (0.7x102cfu/mL) co-isolates in pond water.
Pseudomonas fluorescens, Aeromonas hydrophila, Escherichia coli, Staphylococcus aureus and Micrococcus luteus were identified as co-isolates with P. The caudal fins of fingerlings from pond A had the highest bacterial load (5.8x103cfu/g), while the least counts (1.2x103cfu/g) were identified on the head of fish from pond C, with Flexibacter columnaris as the major etiological agent. The bacterial pathogens were taken from their external surfaces, and were isolated and identified by standard methods. A total of 720 fingerlings between 15.1 and 20.7g were analyzed to determine the degree of infection. In order to provide useful biological data of the pathogens for good management practices, samples were collected monthly between January 2008 and December 2009 in three monoculture nursery ponds, located in three different positions: upriver (A, grassland), mid-river (B, mixed forest and grassland) and downriver (C, rainforest) along 200km length of Cross River floodplains, Nigeria. Abstract: Bacterial infection among the most common cultured mudfish Clarias gariepinus in Africa, has become a cause of concern, because it constitutes the largest economic loss in fish farms. Department of Fisheries, Faculty of Agriculture, Cross River University of Technology, Obubra Campus, Cross River State, Nigeria Received 29-i-2010. (1)Bacterial infection of mudfish Clarias gariepinus (Siluriformes: Clariidae) fingerlings in tropical nursery ponds Gabriel Ikpi & Benedict Offem.
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