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| Author(s): |
Ticiana Martins Zwarg Simões Dias
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Medicina Veterinária e Zootecnia (FMVZ/SBD) |
| Defense date: | 2010-12-09 |
| Examining board members: |
Eliana Reiko Matushima;
Luiz Carlos de Sá Rocha;
Adriana Marques Joppert da Silva
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| Advisor: | Eliana Reiko Matushima |
| Abstract | |
137 blood samples were collected from 132 different specimen, belonging to seven species of Strigiformes (n=92) and eleven species of Falconiformes (n=45), from September 2008 to July 2009. Samples were submitted to complete hemogram, survey for hemoparasites through evaluation of blood smears, sex identification by PCR and measurement of plasmatic cholinesterases by the method of Ellman (1961). Only seven black-capped-screech-owls (Megascops choliba) were positive for hemoparasites (5,3% of total raptors). There were significative difference according to avian health status; all the clinicaly higid animal were not infected, but 20,4% of animals with clinical desorders presented haemosporidians. Quantitatively, the average parasitemia was 3,8 parasited erythrocytes in 10.000 erythrocytes, a infection rate relatively low. The most of hematologic parameters did not present statistic differences in function of presence or absence of hemoparasites, what in most of the cases characterized a low and not much pathogenic infection. The plasmatic cholinesterase activity presented normal distribution, with geometric average of 0,8333 micromoles/mL and geometric standard deviation of 1,7087 µmols/mL. The plasmatic cholinesterase activity presented statistic differences between Falconiformes (0,5705±1,6497 µmols/mL) and Strigiformes (1,0070±1,5620 µmols/mL). There were not significative differences between males of females and adults or youngs between Falconiformes or Strigiformes. Non-higid Falconiformes presented surprisiling much low values than those clinically higid. Between Strigiformes, the captivity specimens present much lower plasmatic cholinesterase activity values than free ranging animals. The plasmatic cholinesterase activity was signifactively different among animal with hemoparasites (geometric average = 2,0132 µmols/mL) and without hemoparasites (geometric average = 0,8331 µmols/mL). This research contributes with relevant information about the haemosporidian occurence in raptors of State of São Paulo, alerting the Institutions about the necessity of monitorizing haemoprotozoa. Besides that, contributes with unpublished data about the plasmatic cholinesterase activity in raptors. (AU) | |