Micronuclei and fluctuating asymmetry in brown trout (Salmo trutta): complementary methods to biomonitor freshwater ecosystems.
Mutat Res
; 412(3): 219-25, 1998 Feb 13.
Article
em En
| MEDLINE
| ID: mdl-9600689
ABSTRACT
In this work we measured both micronuclei number in kidney erythrocytes and fluctuating asymmetry in wild brown trout (Salmo trutta), caught in different fluvial ecosystems of Asturias (northern Spain) characterized by different levels of anthropic influence. Brown trout samples from rivers with high anthropic influence possessed significantly higher averages of both micronuclei and fluctuating asymmetry than brown trout samples from less anthropic-influenced rivers. These findings demonstrated the sensitivity of the micronucleus test in kidney erythrocytes to biomonitor freshwater ecosystems. The positive association found between micronuclei average and fluctuating asymmetry at the populational level suggests that fluctuating asymmetry tests could be potential indicators of environmental threat. Variation of fish asymmetry with ageing indicates that fluctuating asymmetry surveys of wild populations should be carried out in trouts of the same age class.
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Base de dados:
MEDLINE
Assunto principal:
Truta
/
Poluentes Químicos da Água
/
Monitoramento Ambiental
/
Padronização Corporal
/
Micronúcleos com Defeito Cromossômico
/
Água Doce
Limite:
Animals
Idioma:
En
Ano de publicação:
1998
Tipo de documento:
Article