Identification of Polybrominated Dibenzo-p-dioxins in Blue Mussels (Mytilus edulis) from the Baltic Sea

2005 ◽  
Vol 39 (21) ◽  
pp. 8235-8242 ◽  
Author(s):  
Anna Malmvärn ◽  
Yngve Zebühr ◽  
Sören Jensen ◽  
Lena Kautsky ◽  
Erik Greyerz ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Mytilus Edulis ◽  
The Baltic Sea ◽  
Blue Mussels ◽  
The Baltic

scholarly journals Species identification based on a semi-diagnostic marker: Evaluation of a simple conchological test for distinguishing blue mussels Mytilus edulis L. and M. trossulus Gould

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0249587
Author(s):  
Vadim Khaitov ◽  
Julia Marchenko ◽  
Marina Katolikova ◽  
Risto Väinölä ◽  
Sarah E. Kingston ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Mytilus Edulis ◽  
Species Identification ◽  
Barents Sea ◽  
White Sea ◽  
The Arctic ◽  
The White Sea ◽  
The Baltic Sea ◽  
Blue Mussels ◽  
The Baltic

Cryptic and hybridizing species may lack diagnostic taxonomic characters leaving researchers with semi-diagnostic ones. Identification based on such characters is probabilistic, the probability of correct identification depending on the species composition in a mixed population. Here we test the possibilities of applying a semi-diagnostic conchological character for distinguishing two cryptic species of blue mussels, Mytilus edulis and M. trossulus. These ecologically, stratigraphically and economically important molluscs co-occur and hybridize in many areas of the North Atlantic and the neighboring Arctic. Any cues for distinguishing them in sympatry without genotyping would save much research effort. Recently these species have been shown to statistically differ in the White Sea, where a simple character of the shell was used to distinguish two mussel morphotypes. In this paper, we analyzed the associations between morphotypes and species-specific genotypes based on an abundant material from the waters of the Kola Peninsula (White Sea, Barents Sea) and a more limited material from Norway, the Baltic Sea, Scotland and the Gulf of Maine. The performance of the “morphotype test” for species identification was formally evaluated using approaches from evidence-based medicine. Interspecific differences in the morphotype frequencies were ubiquitous and unidirectional, but their scale varied geographically (from 75% in the White Sea to 15% in the Baltic Sea). In addition, salinity-related variation of this character within M. edulis was revealed in the Arctic Barents Sea. For every studied region, we established relationships between the proportions of the morphotypes in the populations as well as between the proportions of the morphotypes in samples and the probabilities of mussels of different morphotypes being M. trossulus and M. edulis. We provide recommendations for the application of the morphotype test to mussels from unstudied contact zones and note that they may apply equally well to other taxa identified by semi-diagnostic traits.

Multi biomarker analysis of pollution effect on resident populations of blue mussels from the Baltic Sea

2018 ◽  
Vol 198 ◽  
pp. 240-256 ◽  
Author(s):  
Josefine Larsson ◽  
Katarzyna Smolarz ◽  
Justyna Świeżak ◽  
Magda Turower ◽  
Natalia Czerniawska ◽  
...  
Keyword(s):  
Baltic Sea ◽  
The Baltic Sea ◽  
Blue Mussels ◽  
Pollution Effect ◽  
Biomarker Analysis ◽  
Resident Populations ◽  
The Baltic

scholarly journals Nitrogen and Phosphorous Content in Blue Mussels (Mytilus spp.) Across the Baltic Sea

2020 ◽  
Vol 7 ◽  
Author(s):  
Anna-Lucia Buer ◽  
Daniel Taylor ◽  
Per Bergström ◽  
Lukas Ritzenhofen ◽  
Annemarie Klemmstein
Keyword(s):  
Baltic Sea ◽  
The Baltic Sea ◽  
Blue Mussels ◽  
Phosphorous Content ◽  
The Baltic

scholarly journals Transfer of the Neurotoxin β-N-methylamino-l-alanine (BMAA) in the Agro–Aqua Cycle

Marine Drugs ◽  
2020 ◽  
Vol 18 (5) ◽  
pp. 244 ◽  
Author(s):  
Sea-Yong Kim ◽  
Sara Rydberg
Keyword(s):  
Amino Acid ◽  
Treatment Group ◽  
Baltic Sea ◽  
Aquatic Ecosystems ◽  
Control Group ◽  
The Baltic Sea ◽  
Protein Amino Acid ◽  
Blue Mussels ◽  
Eye Tissues ◽  
The Baltic

The neurotoxic non-protein amino acid β-N-methylamino-l-alanine (BMAA) is connected to the development of neurodegenerative diseases. BMAA has been shown to accumulate in aquatic ecosystems, and filter-feeding molluscs seem particularly susceptible to BMAA accumulation. The blue mussels farmed along the Swedish coastline in the Baltic Sea are, due to their small size, exclusively used to produce feed for chicken and fish in the agro–aqua cycle. We have investigated the possible biotransfer of BMAA from mussels, via mussel-based feed, into chickens. Chickens were divided into two groups, the control and the treatment. BMAA was extracted from the muscle, liver, brain, and eye tissues in both chicken groups; a UPLC-MS/MS method was subsequently used to quantify BMAA. The results indicate detectable concentrations of BMAA in both chicken groups. However, the BMAA concentration in chicken was 5.65 times higher in the treatment group than the control group, with the highest concentration found in muscle tissue extracted from the treatment group chickens. These data suggest that there is a BMAA transfer route within the agro-aqua cycle, so further investigation is recommended before using mussel-based feed in the chicken industry.

ECOLOGICAL EFFECTS OF OIL VERSUS OIL PLUS DISPERSANT ON THE LITTORAL ECOSYSTEM OF THE BALTIC SEA

1985 ◽  
Vol 1985 (1) ◽  
pp. 485-490 ◽  
Author(s):  
O. Linden ◽  
A. Rosemarin ◽  
A. Lindskog ◽  
C. Hoglund ◽  
S. Johansson
Keyword(s):  
Baltic Sea ◽  
Oil Spill ◽  
Heterotrophic Bacteria ◽  
Benthic Fauna ◽  
Zooplankton Abundance ◽  
Total Production ◽  
Normal Numbers ◽  
The Baltic Sea ◽  
Blue Mussels ◽  
The Baltic

ABSTRACT The effects of a North Sea oil with or without the addition of dispersant were studied in a model of the littoral ecosystem of the Baltic Sea. Experiments were carried out in six pools with a volume of 8 m3 each, with flowthrough seawater and an ecosystem of the shallow rocky Baltic archipelago. All major fauna and flora were transferred into the pools in normal numbers and proportions. Two of the pools were exposed to oil alone. The amount of oil was equivalent to 20 ppm assuming total mixture. Two other pools were exposed to the same amount of oil and an oil dispersant (Corexit 9550, Exxon), and two pools served as controls. The effects studied were those on abundance of heterotrophic bacteria, periphyton photosynthesis, growth of bladder wrack, phytoplankton growth, zooplankton abundance and diversity, benthic fauna, physiological responses of certain crustaceans and molluscs, and the growth of blue mussels. In addition, the total photosynthesis and respiration of the ecosystem was studied. Concentrations of oil in water and in blue mussels were monitored. The experiments showed that almost all the measured parameters were affected. When comparing the effects between the pools, several of the results indicated a stronger response for oil alone compared to oil and dispersant. This was particularly obvious when monitoring the total production and respiration of the ecosystems. The explanation may be that the ecosystems in the pools exposed to oil and dispersant were exposed less time compared to those in the pools where oil alone was added. The oil and dispersant mixture obviously left the system much faster due to the water exchange compared to the oil without dispersant. In the latter case the oil adhered to surfaces and detritus and thus tended to stay longer in the environment. These results may provide valuable information for decision makers faced with an oil spill in shallow waters and who have an option to use oil spill dispersant.

Utilization of discards and offal from commercial fisheries by seabirds in the Baltic Sea

2003 ◽  
Vol 60 (5) ◽  
pp. 980-989 ◽  
Author(s):  
Stefan Garthe ◽  
Birgit Scherp
Keyword(s):  
Baltic Sea ◽  
Bird Species ◽  
Herring Gull ◽  
The Baltic Sea ◽  
Blue Mussels ◽  
Herring Gulls ◽  
Diet Assessment ◽  
Widespread Phenomenon ◽  
The Baltic ◽  
Species Specific

Abstract The distribution and abundance of scavenging seabirds and their utilization of discards and offal between June and December 1998 were studied in the western Baltic Sea. Herring gulls were clearly the most numerous scavenging species in all areas and all seasons, followed by great black-backed gulls, lesser black-backed gulls and mew gulls. High percentages of discarded gadoids (cod, whiting), clupeids (herring, sprat), scad, rockling and offal were consumed by seabirds during experimental discarding on fishing boats, whereas the percentages of flatfish consumed were extremely low. There was a clear effect of cod length on total and species-specific consumption by birds but this pattern was hardly evident for clupeids or dab. By combining official discard and offal statistics and our experimental discarding, we estimate that 6500 t of fish discards and 16 000 t of offal were consumed annually by seabirds in the Baltic Sea. Bivalves, especially blue mussels Mytilus edulis, were the most frequently represented food item in herring gull pellets. Fish identified in the pellets consisted mainly of gadoids, in particular cod. The proportion of discards in herring gull pellets was on average 1.6% (range: 0–4.5%) at Laboe and 17.5% at Warnemünde (range: 9.4–25.5%), but pellets bias diet assessment as offal and other soft prey (including clupeids) will be under-represented. Scavenging on discards and offal is a widespread phenomenon in the Baltic Sea as it is in other shelf areas of Europe, but the number of bird species involved is generally lower and strongly biased towards gulls, especially herring gulls.

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