Marine pathogens, both indigenous and introduced ones, play an important role in determining marine bacterial communities and the number of new marine diseases has increased recently. Mass mortalities due to disease outbreaks have recently affected major taxa in the coastal environment. The global warming might be related to the onset of diseases because of direct effect of the increase of sea water temperature or/and indirectly due to changes in pH or salinity that contribute to the microorganisms' proliferation. One example of such microorganism are bacteria from the genus Vibrio. Several laboratory experiments were performed to investigate the effects of different salinity and temperature conditions, with the Vibrio strains (Vibrio sp., V. harveyi, V. chagasii strains) isolated from the seawater collected in the Gulf of Trieste (Northern Adriatic).
COBISS.SI-ID: 40491525
This is the first surveillance study using methacrylate monolithic supports to concentrate environmental coastal water samples, prior to molecular target detection by RT-qPCR. Rotaviruses (RoV) and Noroviruses (NoV) were monitored in a polluted area at the Bay of Koper (Gulf of Trieste, Northern Adriatic Sea) and at a nearby bathing area and mussel farm areas. RoV and NoV are released into the Bay of Koper, with higher rates close to the discharge of the wastewater treatment plant, however, they can be detected at recreational and mussel farming areas. Our results showed that water bodies considered safe based on FC concentrations, can still have low, yet potentially infective, concentrations of human viruses.
COBISS.SI-ID: 4611663
Pseudo-nitzschia H. Peragallo (1900) is a globally distributed genus of pennate diatoms that are important components of phytoplankton communities worldwide. Some members of the genus produce the neurotoxin domoic acid, so regular monitoring is in place. However, the identification of toxic members in routine samplings remains problematic. In this study, the diversity and seasonal occurrence of Pseudo-nitzschia species were investigated in the Gulf of Trieste, a shallow gulf in the northern Adriatic Sea. We used time series data from 2005 to 2018 to describe the seasonal and inter-annual occurrence of the genus in the area and its contribution to the phytoplankton community. We used time series data from 2005 to 2018 to describe the seasonal and inter-annual occurrence of the genus in the area and its contribution to the phytoplankton community. On average, the genus accounted for about 15 % of total diatom abundance and peaked in spring and autumn, with occasional outbreaks during summer and large inter-annual fluctuations. Increased water temperature and decreased salinity positively affected the presence of some members of the genus, while strong effects could be masked by an unsuitable definition of the species complexes used for monitoring purposes
COBISS.SI-ID: 40469253