sh.sePublikasjoner
1232 of 3
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Genetic Aspects of Environmental Disturbances in Marine Ecosystems: Studies of the Blue Mussel in the Baltic Sea
Södertörns högskola, Institutionen för naturvetenskap, miljö och teknik, Miljövetenskap.
2017 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Anthropogenic environmental changes can serve as drivers for evolutionary responses in wild populations. To predict the long-term impact of anthropogenic changes on populations, it is crucial to understand the genetic effects caused by these disturbances. The Baltic Sea is considered to be one of the world’s most contaminated seas, and the increase of anthropogenic chemical pollution is a major threat to its ecosystems. This thesis assesses the impact of harbors and sewage treatment plants on physiological traits and genetic structure of resident populations of blue mussels at replicated sites in the Baltic Sea. The initial evaluation of the overall genetic pattern in blue mussel populations in the Swedish West Coast, the Baltic Proper and the Bothnian Sea found genetic differentiation between the three water basins and a low genetic differentiation within each basin, especially within the Baltic Proper. Despite the low genetic differentiation among blue mussels within the Baltic Proper, a parallel genetic differentiation associated with sewage treatment plant effluents was found in this basin. This included genomic regions with a high degree of differentiation between reference sites and sites affected by sewage plants effluent. This genetic differentiation is suggested to be due to post-dispersal selection acting in each generation. In contrast, no parallel genetic differentiation was associated with harbors. We identified five genomic regions in blue mussels, showing strong signs of selection, shared among three out of four replicated reference sites and sites affected by sewage effluents in the Baltic Proper i.e. Askö, Tvärminne and Karlskrona. An initial characterization of these genomic regions revealed functions related to immune and endocrine responses, oxidative stress and shell formation. Our results indicate that selection caused by sewage effluents involves multiple loci. The same genomic regions are found across different locations in the Baltic Proper but there are also unique genomic regions at each location. No genotoxic or histopathological effects were found among blue mussels from sewage effluent-affected areas but a higher frequency of histological abnormalities in the digestive gland were observed in mussels from harbors.

sted, utgiver, år, opplag, sider
Huddinge: Södertörns högskola, 2017. , 71 s.
Serie
Södertörn Doctoral Dissertations, ISSN 1652-7399 ; 148
Emneord [en]
Blue mussel, Baltic Sea, anthropogenic disturbance, pollution, sewage effluents, harbors, genetics, genomics
HSV kategori
Forskningsprogram
Miljövetenskapliga studier; Östersjö- och Östeuropaforskning
Identifikatorer
URN: urn:nbn:se:sh:diva-33697Lokal ID: 1328/42/2010ISBN: 978-91-88663-23-8 (tryckt)ISBN: 978-91-88663-24-5 (digital)OAI: oai:DiVA.org:sh-33697DiVA: diva2:1156972
Disputas
2017-12-15, MA636, Alfred Nobels allé 7, Huddinge, 10:00 (engelsk)
Opponent
Veileder
Prosjekter
Evolutionära anpassningar till miljöstörningar i marina ekosystem: genetisk ekotoxikologi i Östersjön
Forskningsfinansiär
The Foundation for Baltic and East European Studies, A063-10
Tilgjengelig fra: 2017-11-23 Laget: 2017-11-14 Sist oppdatert: 2017-11-28
Delarbeid
1. Regional genetic differentiation in the blue mussel from the Baltic Sea area
Åpne denne publikasjonen i ny fane eller vindu >>Regional genetic differentiation in the blue mussel from the Baltic Sea area
Vise andre…
2017 (engelsk)Inngår i: Estuarine, Coastal and Shelf Science, ISSN 0272-7714, E-ISSN 1096-0015, 98-109 s.Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Connectivity plays an important role in shaping the genetic structure and in evolution of local adaptation. In the marine environment barriers to gene flow are in most cases caused by gradients in environmental factors, ocean circulation and/or larval behavior. Despite the long pelagic larval stages, with high potential for dispersal many marine organisms have been shown to have a fine scale genetic structuring. In this study, by using a combination of high-resolution genetic markers, species hybridization data and biophysical modeling we can present a comprehensive picture of the evolutionary landscape for a keystone species in the Baltic Sea, the blue mussel. We identified distinct genetic differentiation between the West Coast, Baltic Proper and Bothnian Sea regions, with lower gene diversity in the Bothnian Sea. Oceanographic connectivity together with salinity and to some extent species identity provides explanations for the genetic differentiation between the West Coast and the Baltic Sea (Baltic Proper and Bothnian Sea). The genetic differentiation between the Baltic Proper and Bothnian Sea cannot be directly explained by oceanographic connectivity, species identity or salinity, while the lower connectivity to the Bothnian Sea may explain the lower gene diversity. © 2016.

Emneord
AFLP, Baltic Sea, Barrier, Gene flow, Oceanographic connectivity, Population genetics
HSV kategori
Forskningsprogram
Miljövetenskapliga studier; Östersjö- och Östeuropaforskning
Identifikatorer
urn:nbn:se:sh:diva-30647 (URN)10.1016/j.ecss.2016.06.016 (DOI)000408787800012 ()1328/42/2010 (Lokal ID)1328/42/2010 (Arkivnummer)1328/42/2010 (OAI)
Prosjekter
Evolutionary adaptation to environmental disturbance in marine ecosystems: genetic ecotoxicology in the Baltic Sea
Forskningsfinansiär
The Foundation for Baltic and East European Studies, A063-10
Tilgjengelig fra: 2016-07-20 Laget: 2016-07-19 Sist oppdatert: 2017-11-15bibliografisk kontrollert
2. Sewage treatment plant associated genetic differentiation in the blue mussel from the Baltic Sea and Swedish west coast
Åpne denne publikasjonen i ny fane eller vindu >>Sewage treatment plant associated genetic differentiation in the blue mussel from the Baltic Sea and Swedish west coast
Vise andre…
2016 (engelsk)Inngår i: PeerJ, ISSN 2167-8359, E-ISSN 2167-8359, Vol. 4, e2628Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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.

HSV kategori
Forskningsprogram
Östersjö- och Östeuropaforskning
Identifikatorer
urn:nbn:se:sh:diva-31135 (URN)10.7717/peerj.2628 (DOI)000387168200015 ()27812424 (PubMedID)2-s2.0-84994409132 (Scopus ID)
Forskningsfinansiär
The Foundation for Baltic and East European Studies, A063-10
Tilgjengelig fra: 2016-11-11 Laget: 2016-11-11 Sist oppdatert: 2017-11-29bibliografisk kontrollert
3. Multi biomarker analysis of pollution effect on resident populations of blue mussels from the Baltic Sea
Åpne denne publikasjonen i ny fane eller vindu >>Multi biomarker analysis of pollution effect on resident populations of blue mussels from the Baltic Sea
Vise andre…
(engelsk)Manuskript (preprint) (Annet vitenskapelig)
HSV kategori
Forskningsprogram
Miljövetenskapliga studier; Östersjö- och Östeuropaforskning
Identifikatorer
urn:nbn:se:sh:diva-33701 (URN)
Forskningsfinansiär
The Foundation for Baltic and East European Studies, A063-10
Merknad

As manuscript in dissertation.

Tilgjengelig fra: 2017-11-15 Laget: 2017-11-15 Sist oppdatert: 2017-11-15bibliografisk kontrollert
4. A population genomic analysis of blue mussels identifies genomic regions associated with sewage treatment plant effluents in the Baltic Sea
Åpne denne publikasjonen i ny fane eller vindu >>A population genomic analysis of blue mussels identifies genomic regions associated with sewage treatment plant effluents in the Baltic Sea
(engelsk)Manuskript (preprint) (Annet vitenskapelig)
HSV kategori
Forskningsprogram
Miljövetenskapliga studier; Östersjö- och Östeuropaforskning
Identifikatorer
urn:nbn:se:sh:diva-33702 (URN)
Forskningsfinansiär
The Foundation for Baltic and East European Studies, A063-10
Merknad

As manuscript in dissertation

Tilgjengelig fra: 2017-11-15 Laget: 2017-11-15 Sist oppdatert: 2017-11-15bibliografisk kontrollert

Open Access i DiVA

Genetic Aspects of Environmental Disturbances in Marine Ecosystems: Studies of the Blue Mussel in the Baltic Sea(3110 kB)76 nedlastinger
Filinformasjon
Fil FULLTEXT02.pdfFilstørrelse 3110 kBChecksum SHA-512
40c28dcd25587a87dcd1b5c505d22391b1b322c13d2e4a295e35b2283558b3c13141a0d434e686714ecfd0186bdea1164d9bab212a5d74a76cd44e2487d348b5
Type fulltextMimetype application/pdf

Personposter BETA

Larsson, Josefine

Søk i DiVA

Av forfatter/redaktør
Larsson, Josefine
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 76 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

isbn
urn-nbn

Altmetric

isbn
urn-nbn
Totalt: 226 treff
1232 of 3
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf