Oljans påverkan på Mytilus edulis trossulus fysiologi och beteende
(2024) MVEK12 20241Centre for Environmental and Climate Science (CEC)
- Abstract
- This study was conducted on blue mussels, Mytilus edulis trossulus, to investigate how the blue mussels have been affected by the bunker oil following the oil spill from the ferry Marco Polo. The study will examine the impact of bunker oil on the physiology and behavior of the blue mussel. The blue mussel is one of the key species in the Baltic Sea and serves as an indicator species, making it suitable for use in this experiment. Bunker oil is a fuel derived from crude oil and is an environmentally hazardous substance that negatively impacts the entire ecosystem.
The first parameter examined was the behavior of the blue mussel, which was investigated by analyzing the mussels' filtration ability and movement. This was done by testing... (More) - This study was conducted on blue mussels, Mytilus edulis trossulus, to investigate how the blue mussels have been affected by the bunker oil following the oil spill from the ferry Marco Polo. The study will examine the impact of bunker oil on the physiology and behavior of the blue mussel. The blue mussel is one of the key species in the Baltic Sea and serves as an indicator species, making it suitable for use in this experiment. Bunker oil is a fuel derived from crude oil and is an environmentally hazardous substance that negatively impacts the entire ecosystem.
The first parameter examined was the behavior of the blue mussel, which was investigated by analyzing the mussels' filtration ability and movement. This was done by testing these parameters with blue mussels from two different locations, one of which was the oil-affected location. These blue mussels were tested with two different oil concentrations and a control concentration. The oil concentrations were 0.004 g of oil per liter of water and 0.4 g of oil per liter of water, with the control concentration being 0 g of oil per liter of water. The blue mussels were exposed to these concentrations over 4 days. During these four days, the mussels' filtration status (open, closed, or wide open) and their movement were documented. Blue mussel movement did not significantly differ between oil sampling locations. However, there was a significant decrease in filtration ability in mussels taken from the oil-affected location, and a decrease in filtration ability in mussels from all locations at high concentrations of heavy oil.
Additionally, the long-term impact of heavy oil on the blue mussels was investigated by testing the weight required to crush the mussels' shells, using mussels taken from an oil-affected location and mussels from a control location. No significant difference was found in shell fragility between the mussels from the two locations.
While further research is necessary to distinguish if bunker oil does have an impact on the Baltic sea blue mussels shell thickness, it is made clear in both previous research and in this study that bunker oil does have a negative impact on the filtration ability of blue mussels. (Less) - Popular Abstract (Swedish)
- Denna studie har gjorts på blåmusslor Mytilus edulis trossulus, för att undersöka hur blåmusslorna påverkats av tjockoljan efter oljeläckaget från färjan Marco Polo. Studien undersökte tjockoljans påverkan på blåmusslans fysiologi och beteende. Blåmusslan är en av Östersjöns nyckelarter och fungerar som en indikatorart för Östersjöns föroreningar, och var därför lämplig att använda i detta experiment. Tjockolja är ett bränsle som utvinns ur råolja, och är en miljöfarlig substans, och utsläppet av det i Östersjön påverkar hela ekosystemet negativt.
Den första parametern som undersöktes var blåmusslans beteende, vilket undersöktes genom att analysera blåmusslornas filtreringsförmåga och rörelse, vilket gjordes genom att testa dessa... (More) - Denna studie har gjorts på blåmusslor Mytilus edulis trossulus, för att undersöka hur blåmusslorna påverkats av tjockoljan efter oljeläckaget från färjan Marco Polo. Studien undersökte tjockoljans påverkan på blåmusslans fysiologi och beteende. Blåmusslan är en av Östersjöns nyckelarter och fungerar som en indikatorart för Östersjöns föroreningar, och var därför lämplig att använda i detta experiment. Tjockolja är ett bränsle som utvinns ur råolja, och är en miljöfarlig substans, och utsläppet av det i Östersjön påverkar hela ekosystemet negativt.
Den första parametern som undersöktes var blåmusslans beteende, vilket undersöktes genom att analysera blåmusslornas filtreringsförmåga och rörelse, vilket gjordes genom att testa dessa parametrar med blåmusslor från två olika lokaler, den ena från den oljedrabbade lokalen. Dessa blåmusslor testades med två olika oljekoncentrationer samt med en kontrollkoncentration. Oljekoncentrationerna var 0,004 g olja per liter vatten samt 0,4 g olja per liter vatten, med kontrollkoncentrationen på 0 g olja per liter vatten. Blåmusslorna exponerades för dessa koncentrationer över 4 dygn. Under dessa fyra dygn dokumenterades blåmusslornas filtreringstatus (öppna, stängda eller vidöppna) samt deras rörelse. Blåmusslornas rörelse visade ingen signifikans för varken oljekoncentrationerna eller för de olika lokalerna som blåmusslorna togs ifrån. Dock visades signifikans för minskad filtreringsförmåga hos blåmusslor tagna från den oljedrabbade lokalen, samt minskad filtreringsförmåga hos blåmusslor från samtliga lokaler vid höga koncentrationer av tjockolja.
Även den långsiktiga påverkan på blåmusslorna av tjockoljan undersöktes, detta genom att testa vilken vikt som krävdes för att krossa blåmusslornas skal, med blåmusslor tagna från en oljedrabbad lokal, samt blåmusslor från en kontrollokal. Ingen signifikant skillnad gick att se i skalskörheten hos blåmusslorna från de olika lokalerna.
Slutsatsen är att tjockoljan har en ogynnsam inverkan på blåmusslornas förmåga att filtrera vatten, vilket resulterar i en minskning av deras effektivitet när det kommer till att rena vattnet. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9158436
- author
- Ekstedt, Emilia LU
- supervisor
- organization
- course
- MVEK12 20241
- year
- 2024
- type
- M2 - Bachelor Degree
- subject
- keywords
- Mytilus edulis trossulus, Blåmusslor, Östersjön, Tjockolja, oljespill
- language
- Swedish
- id
- 9158436
- date added to LUP
- 2024-06-12 13:47:06
- date last changed
- 2024-06-12 13:47:06
@misc{9158436,
abstract = {{This study was conducted on blue mussels, Mytilus edulis trossulus, to investigate how the blue mussels have been affected by the bunker oil following the oil spill from the ferry Marco Polo. The study will examine the impact of bunker oil on the physiology and behavior of the blue mussel. The blue mussel is one of the key species in the Baltic Sea and serves as an indicator species, making it suitable for use in this experiment. Bunker oil is a fuel derived from crude oil and is an environmentally hazardous substance that negatively impacts the entire ecosystem.
The first parameter examined was the behavior of the blue mussel, which was investigated by analyzing the mussels' filtration ability and movement. This was done by testing these parameters with blue mussels from two different locations, one of which was the oil-affected location. These blue mussels were tested with two different oil concentrations and a control concentration. The oil concentrations were 0.004 g of oil per liter of water and 0.4 g of oil per liter of water, with the control concentration being 0 g of oil per liter of water. The blue mussels were exposed to these concentrations over 4 days. During these four days, the mussels' filtration status (open, closed, or wide open) and their movement were documented. Blue mussel movement did not significantly differ between oil sampling locations. However, there was a significant decrease in filtration ability in mussels taken from the oil-affected location, and a decrease in filtration ability in mussels from all locations at high concentrations of heavy oil.
Additionally, the long-term impact of heavy oil on the blue mussels was investigated by testing the weight required to crush the mussels' shells, using mussels taken from an oil-affected location and mussels from a control location. No significant difference was found in shell fragility between the mussels from the two locations.
While further research is necessary to distinguish if bunker oil does have an impact on the Baltic sea blue mussels shell thickness, it is made clear in both previous research and in this study that bunker oil does have a negative impact on the filtration ability of blue mussels.}},
author = {{Ekstedt, Emilia}},
language = {{swe}},
note = {{Student Paper}},
title = {{Oljans påverkan på Mytilus edulis trossulus fysiologi och beteende}},
year = {{2024}},
}