English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Vibrio parahaemolyticus  is the leading cause of seafood-associated bacterial gastroenteritis worldwide. Although different studies have focused on its pattern of variation over time, knowledge about the environmental factors driving the dynamics of this pathogen, within the Chilean territory, is still lacking. This study determined the prevalence of total and pathogenic  V. parahaemolyticus  strains ( tdh  and/or  trh  genes) in mussels ( Mytilus chilensis ) collected from two natural growing areas between 2017 and 2018, using selective agar and PCR analysis.  V. parahaemolyticus  was detected in 45.6% (93/204) of pooled samples from the Valdivia River Estuary. The pathogenic strains carrying the  tdh  and/or  trh  gene were detected in 11.8% (24/204):  tdh  in 9.8% (20/204),  trh  in 0.5% (1/204), and 1.5% (3/204) presented both genes. In Reloncaví Fjord,  V. parahaemolyticus  was detected in 14.4% (30/209) of the samples, pathogenic  V. parahaemolyticus  carrying the  trh  gene was detected in 0.5% (1/209) of the samples, while the  tdh  gene was not detected in the samples from this area. The total count of mauve-purple colonies typical of  V. parahaemolyticus  on CHROMagar was positively associated by multivariate analysis with area, water temperature, and salinity. Similarly,  V. parahaemolyticus  detection rates by PCR had a positive correlation with the area and water temperature. The chances of detecting total  V. parahaemolyticus  in the Valdivia River Estuary are significantly higher than in the Reloncaví Fjord, but inversely, during spring-summer months, the interaction factor between the area and temperature indicated that the chances of detecting  V. parahaemolyticus  are higher in the Reloncaví Fjord. Interestingly, this period coincides with the season when commercial and natural-growing shellfish are harvested. On the other hand, pathogenic  V. parahaemolyticus tdh + was significantly correlated with an increase of water temperature. These environmental parameters could be used to trigger a warning on potential hazard, which would influence human health and economic losses in aquaculture systems.

frontiers in microbiology

Longitudinal Study of Total and Pathogenic Vibrio parahaemolyticus (tdh+ and/or trh+) in Two Natural Extraction Areas of Mytilus chilensis in Southern Chile