Soroprevalência de anticorpos anti-Toxoplasma gondii em animais domésticos e silvestres invasores do arquipélago de Fernando de Noronha, PE.

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

22/02/2011

RESUMO

The Archipelago of Fernando de Noronha is known to possess a rich biological diversity, however, as in other islands of Brazil suffered various human activities. Among these actions, there is the introduction of invasive alien species, which can be sources of infection or reservoirs of zoonotic pathogens. The objective of this research was to determine the seroprevalence of Toxoplasma gondii in domestic and wild animals from the Archipelago of Fernando de Noronha, PE. Between July 2007 and May 2010 blood samples were collected of 767 animals of both sexes and various ages (533 domestic animals and 234 wild animals or synanthropics), among them, 100 chickens (Gallus domesticus), 100 cattle (Bos taurus) , 97 sheep (Ovis aries), 11 goats (Capra hircus), 16 horses (Equus caballus), 118 cats (Felis catus), 91 dogs (Canis familiaris), 36 synanthropic rodents (two rats Rattus norvegicus and 34 black rats Rattus rattus), 197 cattle egret (Bubulcus ibis) and a teju lizard (Tupinambis merianae).The sera were tested for the occurrence of antibodies to T. gondii by Immunofluorescence Assay Test (IFAT) and the modified agglutination test (MAT) using formalin-fixed whole tachyzoites and 2-mercaptoethanol. The seroprevalence was 56.6% (434/767), 60.8% (264/434) of domestic animals and 39.2% (170/434) of wild animals. The seroprevalence was 80.0% (80/100) in chickens, 3.0% (3 / 100) in cattle, 60.8% (59/97) in sheep, , 81.8% ( 9 / 11) in goats, 43.7% (7 / 16) in horses, 59.3% (70/118) in cats, 39.6% (36/91) in dogs, 0.0% (0/2) in rats, 38.2% (13/34) in black rats, 79.7% (157/197) in cattle egrett and 0.0% (0/1) in teju lizard. The results represent the first study of the seroprevalence of T. gondii in alien species from Fernando de Noronha, PE, suggesting a previous infection of seropositive animals to the agent and a wide distribution of the parasite in all studied areas of the island, therefore representing a risk to public health.

ASSUNTO(S)

espécies invasoras toxoplasmose soroprevalência medicina veterinaria alien species toxoplasmosis seroprevalence

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