首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Microbiological composition of native and exotic clams from Tagus estuary: Effect of season and environmental parameters
Authors:Patrícia Anacleto  Sónia Pedro  Maria Leonor Nunes  Rui Rosa  António Marques
Institution:1. Division of Aquaculture and Upgrading (DivAV), Portuguese Institute for the Sea and Atmosphere (IPMA, I.P.), Av. Brasília, 1449-006 Lisbon, Portugal;2. Guia Marine Laboratory, Center of Oceanography, Faculty of Sciences, University of Lisbon (FCUL), Campo Grande, 1749-016 Lisbon, Portugal
Abstract:The influence of seasonal and environmental parameters on the occurrence of bacteria was investigated in two clam species (Venerupis pullastra and Ruditapes philippinarum), water and sediment from the Tagus estuary. Total viable counts (TVC), Escherichia coli, Salmonella spp. and Vibrio spp. were evaluated during one-year. Overall, significant seasonal variations were found in both sampling sites, especially for E. coli and Vibrio spp. levels. In summer, significantly higher Vibrio spp. levels were found in R. philippinarum and sediment samples, but not in V. pullastra clams and water samples. In contrast, significantly higher TVC and E. coli levels were observed in winter months in water and sediment samples. Salmonella spp. was generally isolated when higher levels of E. coli were detected, particularly in R. philippinarum. This study is useful for authorities to develop monitoring strategies for coastal contamination and to estimate human health risks associated with the consumption of bivalves.
Keywords:Venerupis pullastra  Ruditapes philippinarum  Escherichia coli  Salmonella spp    Vibrio spp    Total viable counts
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号