Seasonality and diversity of culturable vibrios in tropical coastal waters

• Autores: Mayuree Vijayan, Lee Choon Weng
• Localización: Bulletin of Marine Science, ISSN 0007-4977, Vol. 90, Nº. 2, 2014, págs. 599-610
• Idioma: inglés
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• Resumen

  • Seasonal changes in culturable vibrio abundance and diversity were monitored at two stations off the west coast of Peninsular Malaysia (Port Klang and Port Dickson) over a 2-yr period. Both vibrio abundance and diversity were higher at Port Dickson [160 (SD 21) colony forming unit (cfu) ml-1, Shannon's diversity of 1.62 (SD 0.08)] than Port Klang [101 (SD 32) cfu ml-1, Shannon's diversity of 1.11 (SD 0.09)]. In total, 16 Vibrio spp. were identified in the present study, of which Vibrio alginolyticus (Miyamoto et al., 1961) Sakazaki, 1968 was the predominant species at both stations. Univariate analysis revealed that both vibrio abundance and diversity were higher in waters with higher dissolved oxygen and lower nutrient concentrations. Although both stations were very different, we observed a recurring vibrio "bloom" during the rainy season. This seasonality brings important implications to the management of coastal resources and activities, primarily due to the fact that some Vibrio spp. are pathogenic to both humans and aquatic organisms.