Regional genetic differentiation in the blue mussel from the Baltic Sea area

Larsson, Josefine; Lind, Emma; Corell, Hanna; Grahn, Mats; Smolarz, Katarzyna; Lönn, Mikael

doi:10.1016/j.ecss.2016.06.016

Cited by 42 publications

(43 citation statements)

References 51 publications

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“…Genetic differentiation between sites as measured by F ST was low within the Baltic Proper (see also Larsson et al, in press). Despite the low over-all differentiation we found that blue mussels populations at STP affected sites had a different genetic composition than populations at reference sites, suggesting non-random settling and/or survival at STP sites.…”

Section: Discussionmentioning

confidence: 95%

“…As the genetic difference between the west coast and the Baltic Proper locations is expected to be large (Larsson et al, in press) and to get a higher resolution in the Baltic Proper analyses were performed on different subsets of the data; STP/REF and HAR/REF, including and excluding the west coast sites. Effects of location, species identity and pollution on the genetic structure were evaluated using constrained principal coordinate analyses (cPCoA).…”

Section: Methodsmentioning

confidence: 99%

“…In contrast, a genetic study of the mussel M. galloprovincialis from the Adriatic Sea showed no genetic differentiation between highly polluted and reference sites and higher gene diversity at the polluted sites suggesting that high levels of gene flow in the mussels may conceal traces of local genetic processes (Štambuk et al, 2013). High gene flow is common in mussels and has also been shown in blue mussels in the Baltic Sea (Larsson et al, in press). …”

Section: Introductionmentioning

confidence: 95%

“…One of the organisms in the Baltic Sea that has successfully adapted to the brackish environment is the blue mussel ( Mytilus ) and the adaptation to brackish water has caused morphological and genetic differentiation between the blue mussels off the Swedish west coast and blue mussels in the Baltic Sea (Johannesson, Kautsky & Tedengren, 1990; Johannesson & Andre, 2006). The genetic differentiation between population from the Baltic Sea and the west coast can be explained by the salinity cline and the low connectivity between the regions, and is paralleled by the distribution of lineages from two sister species of Mytilus , blue mussels (Larsson et al, in press). Clear differences at multiple allozyme characters have been found between the blue mussels in the Baltic Sea and North Sea with a cline in the Öresund region (Theisen, 1978; Väinölä & Hvilsom, 1991), attributed to differences originating from M. edulis in the North Sea and M. trossulus in the Baltic Sea.…”

Section: Introductionmentioning

confidence: 99%

“…The blue mussel in the Baltic Sea is best described as a species complex, Mytilus edulis trossulus with extensive mixing of the M. edulis and M. trossulus genomes (Väinölä & Strelkov, 2011). The genetic differentiation among sites within the Baltic Proper is very low, indicative of strong gene flow, (Johannesson & Andre, 2006; Larsson et al, in press) and can be attributed to the long planktonic larval phase (5–6 weeks) (Kautsky, 1982), and the high oceanographic connectivity within the Baltic Proper (Larsson et al, in press). …”

Section: Introductionmentioning

confidence: 99%

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Sewage treatment plant associated genetic differentiation in the blue mussel from the Baltic Sea and Swedish west coast

Larsson

Lönn

Lind

et al. 2016

PeerJ

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Human-derived environmental pollutants and nutrients that reach the aquatic environment through sewage effluents, agricultural and industrial processes are constantly contributing to environmental changes that serve as drivers for adaptive responses and evolutionary changes in many taxa. In this study, we examined how two types of point sources of aquatic environmental pollution, harbors and sewage treatment plants, affect gene diversity and genetic differentiation in the blue mussel in the Baltic Sea area and off the Swedish west coast (Skagerrak). Reference sites (REF) were geographically paired with sites from sewage treatments plant (STP) and harbors (HAR) with a nested sampling scheme, and genetic differentiation was evaluated using a high-resolution marker amplified fragment length polymorphism (AFLP). This study showed that genetic composition in the Baltic Sea blue mussel was associated with exposure to sewage treatment plant effluents. In addition, mussel populations from harbors were genetically divergent, in contrast to the sewage treatment plant populations, suggesting that there is an effect of pollution from harbors but that the direction is divergent and site specific, while the pollution effect from sewage treatment plants on the genetic composition of blue mussel populations acts in the same direction in the investigated sites.

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Section: Discussionmentioning

confidence: 95%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sewage treatment plant associated genetic differentiation in the blue mussel from the Baltic Sea and Swedish west coast

Larsson

Lönn

Lind

et al. 2016

PeerJ

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Population Genetics, Genomics and Selective Breeding

2021

Marine Mussels

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Effects of isolation on invertebrate biodiversity among the bladderwrack Fucus vesiculosus

Blanc,

Rinne,

Salovius-Laurén

2024

Mar Biol

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Geographic isolation is a factor that is known to affect species composition and diversity in marine systems. In this study, we tested the effects of geographic isolation on invertebrate fauna living among the belt-forming foundation species Fucus vesiculosus in the northern Baltic Sea. Sampling was carried out on reefs with varying levels of isolation (0.5, 1 and 2 km) in July 2021 in the Åland islands (between 59.96°N 20.24°E and 59.75°N 20.84°E). The total number of taxa, abundance, Shannon-Wiener index, Pielou’s evenness and biomass were calculated and the effects of isolation were tested using generalised linear models. Multivariate methods were used to analyse differences in the invertebrate community composition. Although the number of taxa and Shannon´s diversity index did not vary along the isolation gradient, the total abundance of fauna decreased with increasing isolation. In addition, some taxa-specific patterns were observed, e.g. the abundance of insect larvae decreased with isolation while isopods were more numerous in the most isolated locations. As diversity and the number of taxa were similar regardless of isolation, shallow Fucus vesiculosus belts likely act as important biodiversity refuges and potential stepping-stones for invertebrates in remote outer archipelago areas. In a changing climate, these kinds of refuges aiding species dispersal are likely to be even more important, and should be considered in conservation planning.

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Regional genetic differentiation in the blue mussel from the Baltic Sea area

Cited by 42 publications

References 51 publications

Sewage treatment plant associated genetic differentiation in the blue mussel from the Baltic Sea and Swedish west coast

Sewage treatment plant associated genetic differentiation in the blue mussel from the Baltic Sea and Swedish west coast

Population Genetics, Genomics and Selective Breeding

Effects of isolation on invertebrate biodiversity among the bladderwrack Fucus vesiculosus

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