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Analysis of micronucleated erythrocytes in heron nestlings from reference and impacted sites in the Ebro basin (N.E. Spain)

AutorQuirós, Laia ; Ruiz, Xavier; Sanpera, Carolina; Jover, Lluís; Piña, Benjamín
Palabras claveDNA damage
Organochlorine compounds
Flow cytometry
Chemical pollution
Fecha de publicación11-dic-2007
CitaciónEnvironmental Pollution 155(1): 81-87 (2008)
ResumenThe frequency of micronuclei (MN) in peripheral erythrocytes was tested for 59 heron nestlings (Ardea purpurea, Egretta garzetta and Bubulcus ibis) sampled at two areas (polluted and reference) on the River Ebro (NE Spain) and at its Delta during Spring 2006. Flow-cytometry analysis revealed higher (three- to six-fold) MN counts in samples from the most polluted site relative to samples from the reference area. Samples from the Delta showed intermediate values. Age, morphometric parameters (weight, tarsus size and bill-head length) and maturation status showed no significant differences among the different populations for each species; nor were they correlated with MN levels. The data suggest that elevated levels of MN in chicks in impacted areas reflected the chemical pollution of their nesting sites. The use of nestlings for this assay appears to be a convenient, non-destructive method to assess the impact of pollution in natural bird populations.
Frequency of micronucleated erythrocytes in peripheral blood of waterbird nestlings correlates with chemical pollution loads in their nesting sites.
Descripción7 pages, 3 figures.-- PMID: 18063255 [PubMed].-- Printed version published on Sep. 2008.
Versión del editorhttp://dx.doi.org/10.1016/j.envpol.2007.10.030
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