Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
En undersökning om förekomsten av mikroplast i västsvenska blåmusslor (Mytilus edulis).
Halmstad University, School of Business, Engineering and Science.
2016 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The discovery of microplastics (plastic particles smaller than 5 millimeters) in the world’s oceans has in the recent decade caused great concerns amongst scientists. These microplastics are widely distributed over the world’s oceans and have been found in sediments, along coasts, in the pelagic and in remote areas such as the poles. They derive from fragmented larger pieces of plastic and from industry and households wastewater. These particles are often mistaken by invertebrates as food and threatens the marine biota. The plastics are known to block the gut and intestines in the animal, which lead to a feeling of saturation. In the long run this could lead to starvation of the animal. In this study, examination has been done on blue mussels from the Swedish west coast, with the aim to discover the presence of microplastics in them. The blue mussels were diluted in nitric acid and sieved in mesh sizes of 0.07, 0.55 and 0.9 millimeters. Of 120 examined blue mussels 80 contained microplastics and in total 147 plastic particles were found. The particles consist of fibers and fragments in the colours black, blue, red and white/yellow/transparent. The fibers strongly dominated the samples and were found in all mesh sizes. The fragments were only found in the smallest mesh size and only in a few numbers. A correlation was found between the wet weight of the mussels and their plastic containment. This study shows distinct resemblance with earlier studies of Belgian and Canadian blue mussels in which fibers in different colours also dominated. Unfortunately it is almost impossible to ensure the source of the plastics only by visual comparisons, to do that further analysis will be needed. The problems associated with microplastics in blue mussels has been shown to be a lowered filtering activity and a lower uptake of nutrient, at the same time the mussels increase its energy consumption. In the end this leads to severe malnutrition. As the blue mussels make up an important base in the nutrient web the microplastics does not only have a negative impact to themselves, but also to many predators at higher trophic levels. 

Place, publisher, year, edition, pages
2016. , 17 p.
Keyword [sv]
Mikroplast, Blåmusslor, Mytilus edulis
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:hh:diva-31140OAI: oai:DiVA.org:hh-31140DiVA: diva2:936334
Subject / course
Biology
Supervisors
Examiners
Available from: 2016-06-28 Created: 2016-06-13 Last updated: 2016-06-28Bibliographically approved

Open Access in DiVA

fulltext(2134 kB)195 downloads
File information
File name FULLTEXT01.pdfFile size 2134 kBChecksum SHA-512
7b48f3c9c725c5a412d550ee5828ab8af616d2d00210b07af42a08a65df0c6e943cd51d167f72f0e578988a1ad91b3f887299027119520301e43885188fe3b2b
Type fulltextMimetype application/pdf

By organisation
School of Business, Engineering and Science
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 195 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 608 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf