Abstract
Total, fecal coliforms and the enterococcus group in Ulva lactuca and U. clathrata were measured in four localities of the coastline of La Paz, B.C.S, Mexico. Levels of fecal coliforms in water were below the standard of the Ecological Criteria of Water Quality(EC-WQ) which indicates a healthy La Paz inlet (below 200 MPN/100ml). Values of fecal coliforms in algae were below the NOM-031-SSA1-1993 levels determined for marine organisms destined for human consumption. These values were high only in few months. No enterococci were detected in thesamples.
Highlights
U. clathrata were measured in four localities of the coastline
Levels of fecal coliforms in water were below the standard of the Ecological Criteria
Values of fecal coliforms in algae were below the NOM-031-SSA1-1993 levels determined for marine organisms destined for human consumption
Summary
Fecal coliforms and the enterococcus group in Ulva lactuca and U. clathrata were measured in four localities of the coastline of La Paz, B.C.S, Mexico. El objetivo de este estudio fue determinar la calidad microbiológica de las dos especies más abundantes de Ulva (U. lactuca y U. clathrata), así como del agua de mar circundante y conocer si se presentan variaciones temporales y en diferentes localidades del malecón de la Ciudad de La Paz. Las muestras de las algas (20 g de cada una) y del agua de mar superficial (100 ml) fueron tomadas al azar en la zona intermareal y colocadas en bolsas estériles una vez al mes, durante los meses en los que estuvieron presentes ambas especies (marzo a agosto de 2007), en cuatro localidades de la línea de costa del malecón de La Paz, B.C.S., donde se encontró mayor abundancia de algas: 1) El Molinito, 2) El Palmar, 3) El Muelle Fiscal y 4) Vista Coral (Fig. 1).
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