Dissertação
Concentração de metais pesados e número de micronúcleos em Cygnus melanocoryphus (Anatidae) na Estação Ecológica do Taim, RS
Fecha
2014-03-21Registro en:
SANTOS, Eunice Fruhling dos. CONCENTRATION OF HEAVY METALS AND NUMBER OF MICRONUCLEUS IN Cygnus melanocoryphus (ANATIDAE) OF ECOLOGICAL STATION TAIM, RS. 2014. 53 f. Dissertação (Mestrado em Ciencias Biológicas) - Universidade Federal de Santa Maria, Santa Maria, 2014.
Autor
Santos, Eunice Fruhling dos
Institución
Resumen
The black necked swan (Cygnus melanocoryphus) belongs to the Anseriforme
order, Anatidae family, which includes swans, ducks and geese. This swan is
endemic to South America and it is present in Brazil, Paraguay, Uruguay, Argentina
and Chile. In Brazil this swan is found in the southern region, remaining throughout
the year in Ecological Station Taim (ESEC TAIM). The objective of this study was to
identify the concentrations of copper (Cu), cadmium (Cd) and lead (Pb) in feather
samples is related to sex and age and determine the amount of micronuclei varies
with the concentration of Cu, Cd and Pb and with age and sex. Were captured 18
individuals of black necked swan in the summer of 2012 and 39 individuals in the
summer of 2013. Of these, 22 adult males, 19 adult females, nine chicks males, four
chicks females and three chicks with indeterminate sex. Samples of blood and
feathers were collected. The blood samples were used for sex molecular and
preparation of cytologic slides for analysis of micronucleus. The feather samples
were used to measure the presence of heavy metals Cu, Cd and Pb. Significant
differences between ages were found for concentrations in feathers of Cu, Cd and Pb
(p <0.05). There was no significant differences between sex for concentrations in
feathers of Cu, Cd and Pb(p > 0.05). There was no relationship between the amount
of micronuclei in the concentration of these metals feathers and with age and sex (p>
0.05).