ORIGINAL RESEARCH
Seasonal Variability in Micronuclei Induction
in Haemocytes of Mussels along the Eastern
Adriatic Coast
M. Pavlica1, M. Podrug2, A. Štambuk3, P. Cvjetko1, G.I.V. Klobučar3
1 Department of Molecular Biology, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
2 Center for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička c. 56, 10000 Zagreb, Croatia
3Department of Zoology, Faculty of Science University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia
2 Center for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička c. 56, 10000 Zagreb, Croatia
3Department of Zoology, Faculty of Science University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia
Pol. J. Environ. Stud. 2008;17(5):765–771
KEYWORDS
ABSTRACT
The frequency of micronuclei (MN) was determined in haemocytes of native mussels, Mytilus galloprovincialis,
collected at five sites along the Eastern Adriatic coast in Croatia, four times throughout the year
to evaluate seasonal variability in connection with possible genotoxic pollution. Chosen sites were either near
closed industrial facilities or in tourist resorts. Mussels from a mussel farm were used as control. Seasonal variations
in MN frequency were not observed for the control mussels, but for other investigated sites clear seasonal
variations were observed. The highest frequency of MN was observed in summer on all studied sites,
elevated in comparison to the control, while the lowest frequency was detected in autumn except for one site.
These results pointed out that seasonal changes are observed only at polluted sites, most probably caused by
seasonality of pollution as well as by interaction between contaminants and higher metabolic and filtration
rates in mussels, resulting in higher values of cytogenetic damage.
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