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

Larsson, Josefine; Lönn, Mikael; Lind, Emma; Świeżak, Justyna; Smolarz, Katarzyna; Grahn, Mats

doi:10.7717/peerj.2628

Cited by 11 publications

(9 citation statements)

References 87 publications

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“…CSOs have been shown to impact the structure and diversity of benthic communities (Seager & Abrahams, 1990) in some cases, whereas no effects have been identified in others (Rochfort et al, 2000). Pollution from outfalls can hinder larval dispersal and thus gene flow by creating localized environments that are toxic or deadly to larvae (Puritz & Toonen, 2011) or may cause local directional selection for certain genotypes (Larsson et al, 2016 (Miller et al, 2010;Stoddard et al, 2008). Bolton et al, 2017;Underwood, Davies, & Queirós, 2017), photosynthesis (Ayalon, de Barros Marangoni, Benichou, Avisar, & Levy, 2019), and communication (Davies et al, 2014;Gaston, Bennie, Davies, & Hopkins, 2013).…”

Section: Ocean Sprawlmentioning

confidence: 99%

Evolutionary responses of marine organisms to urbanized seascapes

Alter

Tariq

Creed

et al. 2020

Evolutionary Applications

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Many of the world's major cities are located in coastal zones, resulting in urban and industrial impacts on adjacent marine ecosystems. These pressures, which include pollutants, sewage, runoff and debris, temperature increases, hardened shorelines/structures, and light and acoustic pollution, have resulted in new evolutionary landscapes for coastal marine organisms. Marine environmental changes influenced by urbanization may create new selective regimes or may influence neutral evolution via impacts on gene flow or partitioning of genetic diversity across seascapes. While some urban selective pressures, such as hardened surfaces, are similar to those experienced by terrestrial species, others, such as oxidative stress, are specific to aquatic environments. Moreover, spatial and temporal scales of evolutionary responses may differ in the ocean due to the spatial extent of selective pressures and greater capacity for dispersal/gene flow. Here, we present a conceptual framework and synthesis of current research on evolutionary responses of marine organisms to urban pressures. We review urban impacts on genetic diversity and gene flow and examine evidence that marine species are adapting, or are predicted to adapt, to urbanization over rapid evolutionary time frames. Our findings indicate that in the majority of studies, urban stressors are correlated with reduced genetic diversity. Genetic structure is often increased in urbanized settings, but artificial structures can also act as stepping stones for some hard‐surface specialists, promoting range expansion. Most evidence for rapid adaptation to urban stressors comes from studies of heritable tolerance to pollutants in a relatively small number of species; however, the majority of marine ecotoxicology studies do not test directly for heritability. Finally, we highlight current gaps in our understanding of evolutionary processes in marine urban environments and present a framework for future research to address these gaps.

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Section: Ocean Sprawlmentioning

confidence: 99%

Evolutionary responses of marine organisms to urbanized seascapes

Alter

Tariq

Creed

et al. 2020

Evolutionary Applications

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“…For instance, selection in mussels could act through attachment strength (Willis & Skibinski, 1992), pollution tolerance (Loria, Cristescu, and Gonzalez, 2019, for a review;and McKenzie, Brooks, and Johnston, 2011, for an example in a bryozoan), or competition for space linked to different growth rates (Branch & Steffani, 2004;Saarman & Pogson, 2015). Additionally, genetic differentiation in mussels has been shown to be associated with sewage treatment plants (Larsson, 2017;Larsson et al, 2016). Although our sampling around ports was not exhaustive, dock mussels do appear to be restricted to the port interiors, with only a few introduced mussels detected in distant populations.…”

Section: Confinement Of the Introduced Mussels Local Introgression Amentioning

confidence: 99%

Replicated anthropogenic hybridisations reveal parallel patterns of admixture in marine mussels

Simon

Arbiol

Nielsen

et al. 2019

Preprint

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Human-mediated transport creates secondary contacts between genetically differentiated lineages, bringing new opportunities for gene exchange. When similar introductions occur in different places, they provide informally replicated experiments for studying hybridisation. We here examined 4279 Mytilus mussels, sampled in Europe and genotyped with 77 ancestry informative markers. We identified a type of introduced mussels, called 'dock mussels', associated with port habitats and displaying a particular genetic signal of admixture between M. edulis and the Mediterranean lineage of M. galloprovincialis.These mussels exhibit similarities in their ancestry compositions, regardless of the local native genetic backgrounds and the distance separating colonised ports. We observed fine-scale genetic shifts at the port entrance, at scales below natural dispersal distance.Such sharp clines do not fit with migration-selection tension zone models, and instead suggest habitat choice and early stage adaptation to the port environment, possibly coupled with connectivity barriers. Variations in the spread and admixture patterns of dock mussels seem to be influenced by the local native genetic backgrounds encountered. We next examined departures from the average admixture rate at different loci, and compared human-mediated admixture events, to naturally admixed populations and experimental crosses. When the same M. galloprovincialis background was involved, positive correlations in the departures of loci across locations were found; but when different backgrounds were involved, no or negative correlations were observed.While some observed positive correlations might be best explained by a shared history and saltatory colonisation, others are likely produced by parallel selective events. Altogether, genome-wide effect of admixture seems repeatable, and more dependent on genetic background than environmental context. Our results pave the way towards further genomic analyses of admixture, and monitoring of the spread of dock mussels both at large and fine spacial scales.

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“…Changes in species abundance with increased numbers of planktic, resistant, toxic, and introduced species due to nutrient enrichment and resulting symptoms of eutrophication, hypoxia, metal pollution and acidification (Yasuhara et al 2012) has resulted in significant loss of biodiversity in the marine environment. We have very little knowledge about how the Earth's biota will be affected both directly (Hofman et al 2015) and evolutionary (Larsson et al 2016;Whitehead 2014) by human-induced climate change, increased pollution and eutrophication. Understanding how the global biodiversity and their adaptive responses will be affected by anthropogenic perturbations has emerged as a major challenge to humanity (Hofman et al 2015;Schlüter et al 2014).…”

Section: Introductionmentioning

confidence: 99%

“…We have very little knowledge about how the Earth's biota will be affected by human-induced climate change (2), and understanding how global biodiversity will respond to anthropogenic perturbations (2) has emerged as a major challenge to humanity. Human-induced environmental pollutants and nutrients that reach the aquatic environment through sewage effluents, agricultural and industrial processes are constantly contributing to environmental changes that drive adaptive responses and evolutionary changes in many taxa (3,4). Oceans are at a greater risk due to both climate change and the dumping of industrial and human waste.…”

Section: Introductionmentioning

confidence: 99%

Holocene DNA sequences – a dream come true

Sanyal

Larsson

Wirdhum

et al. 2018

Preprint

Self Cite

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Microscopic marine planktons have played a major role in the Earth's ecosystem and accounts for half the globe's primary production. Predicting the fate of marine planktons is imperative to understanding how ocean life will change in future centuries and how organisms have adapted to changes in the past over long timescales (over thousands of years). Studies of revived resting spores of marine diatoms will serve as excellent proxies of environmental change in marine environments. Thus far, only about a century old marine diatom resting spores could be revived. This severely limited the use of diatom resting spores to investigate the effects of environmental perturbations over longer time scales. Here, we, for the first time report revival of thousands of years old resting spores from the deposits of ancient diatoms (Chaetoceros) in sub-seafloor sediments using a revival protocol that involved recreating the ancient environmental conditions (salinity, temperature and light). Our revived diatom resting spores samples range from recent (0-80 years) to ~7200 years old. Importantly, we also extracted the DNA from the ancient resting spores of Chaetoceros species from the Baltic Sea. Our findings will enable us to compare DNA sequence data obtained from these natural archives of resurrected organisms and provide predictive models to forecast evolutionary responses of natural populations to environmental changes resulting from natural and anthropogenic stressors, including climate change Significance StatementOur results address the important topic of adaptive evolution in marine species due to climate and environmental change induced due to anthropogenic perturbations. We present a new model system Chaetoceros muelleri which will help us address important evolutionary and long-term adaptation questions across evolutionary timescales. Our study reports (1) the revival of recent (0-80 years) to ancient (7200 years old) resting spores of Chaetoceros (2) the extraction of DNA and amplification of chloroplast and ribosomal genes from recent and ancient (~1300 years old) resting spores of Chaetoceros (3) Radiocarbon dating to determine age of sediments (4) Identification of species by reviving the resting spores (5) Baltic sea an excellent ecosystem to study long-term effects of environment on species adaptation

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

Cited by 11 publications

References 87 publications

Evolutionary responses of marine organisms to urbanized seascapes

Evolutionary responses of marine organisms to urbanized seascapes

Replicated anthropogenic hybridisations reveal parallel patterns of admixture in marine mussels

Holocene DNA sequences – a dream come true

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