Aplicación de la prueba de micronúcleos a especies ícticas silvestres frecuentes en dos ambientes lenticos de zonas bajas de Colombia


  • Isabel Palacio-Betancur Universidad de Antioquia
  • Jaime A. Palacio-Baena Universidad de Antioquia
  • Mauricio Camargo-Guerrero Universidad de Antioquia



Palabras clave:

micronúcleos, especies ícticas, genotoxicidad, ambientes lénticos, Colombia


se evaluó la presencia de estrés genotóxico en algunas especies ícticas en dos ambientes lénticos tropicales de Colombia [Cienaga de Cachimbero (Santander) y Cienaga de Ayapel (Cordoba)] a través de la aplicación de la prueba de micronúcleos. Después de la captura de los peces y la identificación de las especies se extrajo la muestra de sangre por medio de punción cardiaca y se tomaron las medidas morfométricas. las muestras se tiñeron con Giemsa y se cuantificó la frecuencia de micronúcleos en 2.000 células por individuo. Se calculó el factor de con-dición para cada uno de los ejemplares capturados y se aplicó un análisis de K-W para comparar el número de MN entre las diferentes especies en cada una de las ciénagas y el número de mn de las especies comunes en los dos sistemas lagunares. Los resultados mostraron una relación estadísticamente significativa entre el factor de condición y la frecuencia de eritrocitos micronúcleados. Aunque no existen diferencias estadísticamente significativas entre las frecuencias de los micronúcleos de las diferentes especies en las ciénagas de cachimbero y de Ayapel, Hoplias malabaricus presentó un promedio de micronucleos muy superior a las demás especies en la ciénaga de Cachim-bero y Ctenolucius sujeta y Cyphocharax magdalenae para la ciénaga de Ayapel. nuestros resultados sugieren que tanto especies sensitivas como no sensitivas podrían ser incluidas como especies centinelas en los estudios de biomonitoreo en colombia.

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Cómo citar

Palacio-Betancur, I., Palacio-Baena, J. A., & Camargo-Guerrero, M. (2010). Aplicación de la prueba de micronúcleos a especies ícticas silvestres frecuentes en dos ambientes lenticos de zonas bajas de Colombia. Actualidades Biológicas, 31(90), 1–11. https://doi.org/10.17533/udea.acbi.4730



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