Prevalences of pathogenic and non-pathogenic Vibrio parahaemolyticus in mollusks from the Spanish Mediterranean Coast
View/Open
Publication date
2015-07-21ISSN
1664-302X
Abstract
Vibrio parahaemolyticus is a well-recognized pathogen of humans. To better understand the ecology of the human-pathogenic variants of this bacterium in the environment, a study on the prevalence in bivalves of pathogenic variants (tlh+ and tdh+ and/or trh+) versus a non-pathogenic one (only tlh+ as species marker for V. parahaemolyticus), was performed in two bays in Catalonia, Spain. Environmental factors that might affect dynamics of both variants of V. parahaemolyticus were taken into account. The
results showed that the global prevalence of total V. parahaemolyticus found in both bays was 14.2% (207/1459). It was, however, significantly dependent on sampling point, campaign (year) and bivalve species. Pathogenic variants of V. parahaemolyticus (tdh+ and/or trh+) were detected in 3.8% of the samples (56/1459), meaning that the proportion of bivalves who contained tlh gene were contaminated by pathogenic V. parahaemolyticus strains is 27.1% (56/207). Moreover, the presence of pathogenic V. parahaemolyticus (trh+) was significantly correlated with water salinity, thus the probability of finding pathogenic V. parahaemolyticus decreased 1.45 times with every salinity unit (ppt) increased. Additionally, data showed that V. parahaemolyticus could establish close associations with Ruditapes spp. (P-value < 0.001), which could enhance the transmission of illness to human by pathogenic variants, when clams were eaten raw or slightly cooked. This study provides information on the abundance,
ecology and characteristics of total and human-pathogenic V. parahaemolyticus variants associated with bivalves cultured in the Spanish Mediterranean Coast.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
639 - Hunting. Fishing. Fish breeding
Pages
10
Publisher
Frontiers Media
Is part of
Frontiers in Microbiology
Citation
Lopez-Joven, Carmen, Ignacio de Blas, M. Dolores Furones, and Ana Roque. 2015. "Prevalences Of Pathogenic And Non-Pathogenic Vibrio Parahaemolyticus In Mollusks From The Spanish Mediterranean Coast". Frontiers In Microbiology 6. doi:10.3389/fmicb.2015.00736.
Grant agreement number
INIA-FEDER/Programa Nacional de Recursos y Tecnologías Agroalimentarias/RTA2005-00079-00-00/ES/Detección y caracterización de las bacterias del género Vibrio potenciales causantes de cuadros diarreicos en la especie humana presentes en los bivalvos de cultivo en las bahias de Alfacs i Fangar (Tarragona)/
INIA-FEDER/Programa Nacional de Proyectos de Investigación Fundamental/RTA2008-00063-00-00/ES/Estudio de las bacterias diarreicas provenientes de bivalvos cultivados en las bahías del Delta del Ebro, Tarragona/
Program
Aqüicultura
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2549]
The following license files are associated with this item:
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/