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Immediate biomarker responses to benzo[a]pyrene in polluted and unpolluted populations of the blue mussel (Mytilus edulis L.) at high-latitudes.
Environ Int. 2008 May; 34(4):483-9.EI

Abstract

Immediate biomarker responses of two high-latitude populations of the blue mussel Mytilus edulis to benzo[a]pyrene (B[a]P) were evaluated. Mussels collected from a clean and a polluted site in southwest Iceland were exposed to the nominal dose of 100 microg B[a]P L(-l) for 3 h, after 4 days of acclimatization in clean seawater. To test the sensitivity to the toxicant and immediate biological responses, the following biomarkers were used: DNA single strand breaks, heart rate and feeding rate. All the biomarkers revealed differences between the study sites. Irrespective of the origin of the organisms, the short time exposure to the high B[a]P concentration did not induce DNA single strand breaks or significantly affect the feeding rate. However, the heart rate results showed significantly different responses. The mussels from the polluted site (Reykjavík harbour) increased their heart rate when exposed to B[a]P, while no difference was observed between the heart rate values of the individuals from the clean site (Hvassahraun). The mussels seem to sense the pollutant they have been previously exposed to, and their acute response indicates physiological adaptation to the polluted environment. The results indicate limited sensitivity and temporal predictivity, i.e. transient measurable changes of these biomarkers, as well as showing that the background of the organisms should be considered when evaluating short-term biomarker responses to contaminants.

Authors+Show Affiliations

Institute of Biology, University of Iceland, Askja--Natural Science Building, Sturlugata 7, 101 Reykjavík, Iceland. halldor@hi.isNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18063033

Citation

Halldórsson, Halldór P., et al. "Immediate Biomarker Responses to Benzo[a]pyrene in Polluted and Unpolluted Populations of the Blue Mussel (Mytilus Edulis L.) at High-latitudes." Environment International, vol. 34, no. 4, 2008, pp. 483-9.
Halldórsson HP, De Pirro M, Romano C, et al. Immediate biomarker responses to benzo[a]pyrene in polluted and unpolluted populations of the blue mussel (Mytilus edulis L.) at high-latitudes. Environ Int. 2008;34(4):483-9.
Halldórsson, H. P., De Pirro, M., Romano, C., Svavarsson, J., & Sarà, G. (2008). Immediate biomarker responses to benzo[a]pyrene in polluted and unpolluted populations of the blue mussel (Mytilus edulis L.) at high-latitudes. Environment International, 34(4), 483-9.
Halldórsson HP, et al. Immediate Biomarker Responses to Benzo[a]pyrene in Polluted and Unpolluted Populations of the Blue Mussel (Mytilus Edulis L.) at High-latitudes. Environ Int. 2008;34(4):483-9. PubMed PMID: 18063033.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Immediate biomarker responses to benzo[a]pyrene in polluted and unpolluted populations of the blue mussel (Mytilus edulis L.) at high-latitudes. AU - Halldórsson,Halldór P, AU - De Pirro,Maurizio, AU - Romano,Chiara, AU - Svavarsson,Jörundur, AU - Sarà,Gianluca, Y1 - 2007/12/11/ PY - 2007/04/05/received PY - 2007/10/26/revised PY - 2007/11/06/accepted PY - 2007/12/8/pubmed PY - 2008/10/22/medline PY - 2007/12/8/entrez SP - 483 EP - 9 JF - Environment international JO - Environ Int VL - 34 IS - 4 N2 - Immediate biomarker responses of two high-latitude populations of the blue mussel Mytilus edulis to benzo[a]pyrene (B[a]P) were evaluated. Mussels collected from a clean and a polluted site in southwest Iceland were exposed to the nominal dose of 100 microg B[a]P L(-l) for 3 h, after 4 days of acclimatization in clean seawater. To test the sensitivity to the toxicant and immediate biological responses, the following biomarkers were used: DNA single strand breaks, heart rate and feeding rate. All the biomarkers revealed differences between the study sites. Irrespective of the origin of the organisms, the short time exposure to the high B[a]P concentration did not induce DNA single strand breaks or significantly affect the feeding rate. However, the heart rate results showed significantly different responses. The mussels from the polluted site (Reykjavík harbour) increased their heart rate when exposed to B[a]P, while no difference was observed between the heart rate values of the individuals from the clean site (Hvassahraun). The mussels seem to sense the pollutant they have been previously exposed to, and their acute response indicates physiological adaptation to the polluted environment. The results indicate limited sensitivity and temporal predictivity, i.e. transient measurable changes of these biomarkers, as well as showing that the background of the organisms should be considered when evaluating short-term biomarker responses to contaminants. SN - 0160-4120 UR - https://www.unboundmedicine.com/medline/citation/18063033/Immediate_biomarker_responses_to_benzo[a]pyrene_in_polluted_and_unpolluted_populations_of_the_blue_mussel__Mytilus_edulis_L___at_high_latitudes_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0160-4120(07)00206-1 DB - PRIME DP - Unbound Medicine ER -