Pseudomonas anguilliseptica infection as a threat to wild and farmed fish in the Baltic Sea

2016 ◽  
Vol 37 (3) ◽  
pp. 135 ◽  
Author(s):  
Tom Wiklund
Keyword(s):  
Bacterial Pathogens ◽  
Fish Farming ◽  
The Baltic Sea ◽  
Farmed Fish ◽  
Potential Threat ◽  
Fish Pathogens ◽  
New Host ◽  
The Baltic ◽  
Farming Industry ◽  
New Host Species

The transport of live fishes related to the growth of the fish farming industry worldwide may increase the transfer of previously known bacterial pathogens into new geographic areas and new host species, but also facilitate the introduction of completely new bacterial pathogens. Species belonging to the genera Vibrio and Aeromonas are well known in many countries, infecting a large number of fish species. Other bacterial fish pathogens like Pseudomonas anguilliseptica species, up to now considered less harmful, may constitute a potential threat to a developing fish farming industry, especially of European whitefish.

Mercury in sediments of harbor areas of the Baltic Sea: compilation of data and comparison of legislation in the individual countries

2017 ◽  
Vol 32 (1) ◽  
pp. 0-0
Author(s):  
Grażyna Dembska
Keyword(s):  
Baltic Sea ◽  
Municipal Wastewater ◽  
The Baltic Sea ◽  
Potential Threat ◽  
Contamination Assessment ◽  
Limit Values ◽  
Ship Traffic ◽  
Mercury Compounds ◽  
The Baltic ◽  
The Individual

Mercury is a very toxic chemical element and presents a very high level of chemical and biological activity. Long-term emissions of this element into the environment created a global pool of mercury, as a result of mercury forms has been constantly mobilised, deposited and re-mobilised up till now. The continued releases increase the overall values of the global mercury cycle in the air, water, sediments/soil as well as flora and fauna. Port sediments, which containing large deposits of mercury compounds may constitute a potential threat to the marine environment. Moreover harbour basins, which are mainly located in the estuary areas, can be exposed on the pollutants collected by the river flowing through the whole basin area. Furthermore, some contamination can be also supplied to the harbour areas as a result of cargo handling, ship traffic, the discharge of industrial and municipal wastewater etc. These contamination are largely deposited in the benthic sediments. This study summarizes results of mercury concentration in the sediments collected from the marine ports of the Baltic Sea (31 ports). Additionally, it references them to the existing legislation of the individual countries. These data came from the various sources: scientific articles, data submitted by different ports, port-related organisations within the framework of the project SMOCS [35], as well as own research..It has been found differences between each country's legal system. These are related to the different limit values used for the contamination assessment of mercury in port sediments. Another issue is an application of different analytical methodologies in environmental survey. The common analytical methodolody for the determination of mercury compounds together with defined similar limit values for the polluted sediments seems to be extremly important issue in terms of planning as well as managing Baltic Sea port’s sediments

scholarly journals Viruses Infecting the European Catfish (Silurus glanis)

Viruses ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1865
Author(s):  
Mona Saleh ◽  
Boglárka Sellyei ◽  
Gyula Kovács ◽  
Csaba Székely
Keyword(s):  
Fish Farming ◽  
Molecular Characterisation ◽  
Therapeutic Approaches ◽  
Fish Pathogens ◽  
Silurus Glanis ◽  
Pathogen Control ◽  
European Catfish ◽  
Fish Viruses ◽  
Farming Industry

In aquaculture, disease management and pathogen control are key for a successful fish farming industry. In past years, European catfish farming has been flourishing. However, devastating fish pathogens including limiting fish viruses are considered a big threat to further expanding of the industry. Even though mainly the ranavirus (Iridoviridea) and circovirus (Circoviridea) infections are considered well- described in European catfish, more other agents including herpes-, rhabdo or papillomaviruses are also observed in the tissues of catfish with or without any symptoms. The etiological role of these viruses has been unclear until now. Hence, there is a requisite for more detailed information about the latter and the development of preventive and therapeutic approaches to complete them. In this review, we summarize recent knowledge about viruses that affect the European catfish and describe their origin, distribution, molecular characterisation, and phylogenetic classification. We also highlight the knowledge gaps, which need more in-depth investigations in the future.

scholarly journals Comparative analysis of both genomic segments of betanodaviruses isolated from epizootic outbreaks in farmed fish species provides evidence for genetic reassortment

2009 ◽  
Vol 90 (12) ◽  
pp. 2940-2951 ◽  
Author(s):  
J. G. Olveira ◽  
S. Souto ◽  
C. P. Dopazo ◽  
R. Thiéry ◽  
J. L. Barja ◽  
...  
Keyword(s):  
Structural Proteins ◽  
Nervous Necrosis Virus ◽  
Coding Region ◽  
Necrosis Virus ◽  
Farmed Fish ◽  
New Host ◽  
Protein Levels ◽  
Genetic Reassortment ◽  
Type Strains ◽  
New Host Species

Sequencing of the full coding region of both genomic segments of seven betanodavirus strains isolated from different farmed species in Spain and Portugal revealed that six were reassortants, exhibiting a red-spotted grouper nervous necrosis virus (RGNNV)-type RNA1 and a striped jack nervous necrosis virus (SJNNV)-type RNA2. Analysis of sequences of reassortant strains at both the genomic and protein levels revealed the existence of differences compared with type strains of both genotypes. These differences were greater in the polymerase sequence, which is remarkable because viral structural proteins generally diverge more rapidly than non-structural proteins. Changes in two amino acids observed in the SJNNV capsid protein might be involved in the colonization of new host species by these reassortant strains. In addition, a more extensive phylogenetic analysis, including partial sequences of both RNA segments of 16 other Iberian nodaviruses, confirmed the existence of reassortment between RGNNV and SJNNV.

Temporal and spatial sedimentation rate variabilities in the eastern Gotland Basin, the Baltic Sea

Boreas ◽  
2002 ◽  
Vol 31 (1) ◽  
pp. 65-74 ◽  
Author(s):  
Christian Christiansen ◽  
Helmar Kunzendorf ◽  
Kay-Christian Emeis ◽  
Rudolf Endler ◽  
Ulrich Struck ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Sedimentation Rate ◽  
The Baltic Sea ◽  
Gotland Basin ◽  
Temporal And Spatial ◽  
The Baltic

Russian Oil: Production and Exports

2003 ◽  
pp. 136-146
Author(s):  
K. Liuhto
Keyword(s):  
Baltic Sea ◽  
Statistical Data ◽  
Oil Production ◽  
The Baltic Sea ◽  
North West ◽  
The North ◽  
Oil Transportation ◽  
Sea Ports ◽  
The Baltic

Statistical data on reserves, production and exports of Russian oil are provided in the article. The author pays special attention to the expansion of opportunities of sea oil transportation by construction of new oil terminals in the North-West of the country and first of all the largest terminal in Murmansk. In his opinion, one of the main problems in this sphere is prevention of ecological accidents in the process of oil transportation through the Baltic sea ports.

Paleoecological study of bottom sediments of the lake Goluboye (Karelian Isthmus) according to the results of diatom analysis

2019 ◽  
pp. 265-269
Author(s):  
Angelina E. Shatalova ◽  
Uriy A. Kublitsky ◽  
Dmitry A. Subetto ◽  
Anna V. Ludikova ◽  
Alar Rosentau ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Bottom Sediments ◽  
Modern Science ◽  
Karelian Isthmus ◽  
The Baltic Sea ◽  
Diatom Analysis ◽  
North West ◽  
The North ◽  
Important Direction ◽  
The Baltic

The study of paleogeography of lakes is an actual and important direction in modern science. As part of the study of lakes in the North-West of the Karelian Isthmus, this analysis will establish the dynamics of salinity of objects, which will allow to reconstruct changes in the level of the Baltic Sea in the Holocene.

Holocene diatom biostratigraphy of the SW Gulf of Gdańsk, Southern Baltic Sea (part III)

2008 ◽  
Vol 37 (4) ◽  
Author(s):  
Małgorzata Leśniewska ◽  
Małgorzata Witak
Keyword(s):  
Baltic Sea ◽  
The South ◽  
Gulf Of Gdańsk ◽  
The Baltic Sea ◽  
Southern Baltic Sea ◽  
Gulf Of Gdansk ◽  
Southern Baltic ◽  
The Baltic ◽  
Palaeoenvironmental Changes

Holocene diatom biostratigraphy of the SW Gulf of Gdańsk, Southern Baltic Sea (part III)The palaeoenvironmental changes of the south-western part of the Gulf of Gdańsk during the last 8,000 years, with reference to the stages of the Baltic Sea, were reconstructed. Diatom analyses of two cores taken from the shallower and deeper parts of the basin enabled the conclusion to be drawn that the microflora studied developed in the three Baltic phases: Mastogloia, Littorina and Post-Littorina. Moreover, the so-called anthropogenic assemblage was observed in subbottom sediments of the study area.

Associations of Sphagnum rubellum Wils. on the bogs of the south-east part of Baltic region

2003 ◽  
pp. 50-61 ◽  
Author(s):  
V. A. Smagin ◽  
M. G. Napreenko
Keyword(s):  
Baltic Sea ◽  
Plant Cover ◽  
Karelian Isthmus ◽  
Baltic Region ◽  
The South ◽  
The Baltic Sea ◽  
Kaliningrad Region ◽  
The Baltic ◽  
Typical Habitat ◽  
New Syntaxa

The paper characterizes the 3 associations comprising plant communities with Sphagnum rubellum in the south-eastern part of the Baltic region. The new syntaxa differ from each other both in their floristic characters and the pronounced affinity to definite regional mire types and particular habitats. The ass. Drosero-Sphagnetum rubelli is typical of the relatively most thorough ranges. It is observed from the Kaliningrad region to the Karelian Isthmus and, according to the published reference, occurs even throughout the whole area around the Baltic Sea. Its most typical habitat is that of margins of mire lakes and pools. The ass. Eriophoro-Sphagnetum rubelli occurs in central plateaus of convex plateau-like bogs, typical of the areas adjacent to the Baltic Sea coast. It occupies extended flat mire ecotopes with the water level 0.2–0.25 m deep. The ass. Empetro-Sphagnetum rubelli is characteristic of the retrogressive complex in the convex bogs of the East-Baltic Province. It is mostly observed along the coast of the Gulf of Finland. Its stands are rather dynamic and unstable in both space and time. The presence of communities comprised by these 3 associations is an important vegetation character of the series of regional mire types. Assuming an association level of the respective syntaxa seems rational for the purposes of adequate reflection of plant cover diversity.

MODERN TECHNOLOGY IN DUNE COMPLEXES MONITORING ON THE VISTULA SPIT

2017 ◽  
Author(s):  
Aleksandr Danchenkov ◽  
Aleksandr Danchenkov
Keyword(s):  
High Resolution ◽  
Baltic Sea ◽  
Spatial Data ◽  
Modern Technology ◽  
High Potential ◽  
Coastal Processes ◽  
The Baltic Sea ◽  
Widespread Application ◽  
The Baltic ◽  
Modern Technologies

Modern technologies, which provide fast and accurate acquisition of high-resolution spatial data, have found widespread application in the monitoring of coastal processes. This paper reports the results of four years’ monitoring of a huge deflation/blowout/wind-scour basin dynamics at the Vistula Spit (southeast coast of the Baltic Sea). Information about the volume and size dynamics together with deflation/accumulation schemes and 3D elevation maps is presented. Basing on the obtained results, forecast of the deflation basin dynamics for 2016 was proposed. This paper implements the Terrestrial Laserscanning (TLS) method to the coastal processes investigation and demonstrates its high potential in this field.

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