Seasonal enumeration of fecal coliform bacteria from the feces of ring-billed gulls (Larus delawarensis) and Canada geese (Branta canadensis)

Article Abstract:

Ring-billed gull feces have been found to contain a higher average concentration of fecal coliform bacteria per gram than do Canada goose feces, but average fecal sample weights of the geese were found to be more than 15 times those of the gulls when fecal samples of these birds in Westchester County, NY, were analyzed for a period of two years. Water suppliers often say roosting birds are responsible for fecal contamination in surface waters and blame geese and gulls primarily.

New York, Health aspects, Statistical Data Included, Feces, Water-supply, Water supply, Birds, Contamination

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Differential media for quantitative recovery of waterborne Aeromonas hydrophila

Article Abstract:

Ampicillin-dextrin (AD) agar efficiently recovers Aeromonas hydrophila from drinking water and differentiates between it and other waterborne bacteria. Aeromonas spp. is enteropathogenic and survives the standard chlorination techniques. The AD medium shows yellow colonies for the genus Aeromonas and green for other genera. This technique is useful for the standard determinations of microbiological drinking water quality.

Usage, Observations, Marine bacteria, Bacteria, Pathogenic, Pathogenic bacteria, Drinking water, Dextrins, Ampicillin

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Impact of the ring-billed (Larus delawarensis) on the microbiological quality of recreational water

Article Abstract:

The effect on the microbiological water quality of ring-billed gulls is discussed. Gull droppings in the form of the fecal coliforms Salmonella spp and Aeromonas spp., were measured. The number of fecal coliforms before and after attracting to the beach these birds with food was also estimated. It was found that in the bacteriological degradation of recreational water, gulls can also be contributory.

Environmental aspects, Ring-billed gull

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