Variação na contagem de leucócitos em Callithrix jacchus (Linnaeus, 1758) submetidos a uma situação de estresse agudo

Sousa Cunha, MichelleRosado Lopes, DiogoBernardete Cordeiro de Sousa, Maria

The hematological profile of common marmosets, Callithrix jacchus (L., 1758), is similar to that of humans and it is very important in comparative physiopathological studies. It is also known that stressful situations trigger immunologic responses, modifying peripheral leukocyte levels. In this study we evaluated if any quantitative change occurs in leukocytes whena co-specific same-sex intruder was introduced into the living cage of common marmosets (residents). Nineteen captive animals, ten females and nine males, were used. Blood samples were collected from the resident animal before (basal), during (stress) and after (recovery) intruderexposure. A significant increase in global (absolute and relative) neutrophil counting and a decrease in the percentage of lymphocytes during the recovery phase in both males and females were observed. These findings may represent a redistribution of the neutrophil reserve to the peripheral circulation to provide an adequate physiological response toacute stress in potencial injury situations in common marmosets.