ABSTRACT The island of Fernando de Noronha, belonging to the state of Pernambuco, Brazil, has several animal species introduced by man, such as the black rat (Rattus rattus) and the domestic cat (Felis catus), representing a risk to the ecological balance of the island and to the public health. This study aimed to report the occurrence of Strobilocercus fasciolaris in black rats (R. rattus) in this insular environment and to contribute with epidemiological data on this parasitosis. Rodents were captured using Tomahawk traps and sedated with an association of Ketamine Hydrochloride (40mg/kg/IM) and Xylazine Hydrochloride (2mg/kg/IM) for subsequent euthanasia and necroscopic evaluation. Of the 154 captured black rats, 54 (35.06%) had single or multiple cysts in the liver. The cysts were morphologically evaluated and the metacestodes were identified as Strobilocercus fasciolaris, the larval form of Hydatigera taeniformis. This is the first report of the occurrence of Strobilocercus fasciolaris in black rats (Rattus rattus) in an island environment in Brazil. The occurrence of this metacestode in rodents on the Island demonstrates the high environmental contamination, fast reproduction, and dispersion of this parasite, being a potential risk for the conservation of susceptible species and for public health. Noronha Pernambuco Brazil man Rattus rattus Felis catus, catus , catus) health R. R (R parasitosis 40mg/kg/IM 40mgkgIM mgkgIM 40mg kg IM mg (40mg/kg/IM 2mg/kg/IM 2mgkgIM 2mg (2mg/kg/IM evaluation 15 5 35.06% 3506 35 06 (35.06% liver taeniformis contamination reproduction parasite 1 35.06 350 3 0 (35.06 35.0 (35.0 35. (35. (35 (3 (

RESUMO A Ilha de Fernando de Noronha, pertencente ao estado de Pernambuco, Brasil, possui diversas espécies animais introduzidas pelo homem, como o rato-preto (Rattus rattus) e o gato-doméstico (Felis catus), representando um risco ao equilíbrio ecológico da Ilha e à saúde pública. Objetivou-se relatar a ocorrência de Strobilocercus fasciolaris em ratos-pretos (R. rattus) nesse ambiente insular e contribuir com dados epidemiológicos sobre essa parasitose. Os roedores foram capturados utilizando-se armadilhas do tipo Tomahawk, sedados com uma associação de cloridrato de cetamina (40mg/kg/IM) e de cloridrato de xilazina (2mg/kg/IM) para posterior eutanásia e avaliação necroscópica. Dos 154 ratos-pretos capturados, 54 (35,06%) apresentavam cistos únicos ou múltiplos no fígado. Os cistos foram avaliados morfologicamente e os metacestódeos foram identificados como Strobilocercus fasciolaris, forma larval de Hydatigera taeniformis. Este é o primeiro relato da ocorrência de Strobilocercus fasciolaris em ratos-pretos (Rattus rattus) em ambiente insular no Brasil. A ocorrência desse metacestodeo em roedores na Ilha demonstra a alta contaminação ambiental, a rápida reprodução e a dispersão desse parasito, sendo um potencial risco para a conservação das espécies suscetíveis e para a saúde pública. Noronha Pernambuco Brasil homem ratopreto rato preto Rattus rattus gatodoméstico gato doméstico Felis catus, catus , catus) pública Objetivouse Objetivou se ratospretos ratos pretos R. R (R parasitose utilizandose utilizando Tomahawk 40mg/kg/IM 40mgkgIM mgkgIM 40mg kg IM mg (40mg/kg/IM 2mg/kg/IM 2mgkgIM 2mg (2mg/kg/IM necroscópica 15 5 35,06% 3506 35 06 (35,06% fígado taeniformis ambiental parasito 1 35,06 350 3 0 (35,06 35,0 (35,0 35, (35, (35 (3 (

The prevalence of antibodies against bluetongue virus was investigated in 41 dairy goats and 40 sheep herds in the semi-arid region of Pernambuco state and the conditions for insect Culicoides maintenance, considering climate dynamics and vector competence, were evaluated. The percents of seropositive herds in agar gel immunodiffusion test for bluetongue virus group were 24 for goats and 27.5 for sheep. The estimated prevalences of seropositive animals were 3.9% for goats (n = 410) and 4.3% for sheep (n = 400). The prevalences of seropositive animals were low in the mesoregion of Sertão Pernambucano (4.8% for goats and 4.1% for sheep) and São Francisco Pernambucano (1.0% for goats and 4.5% for sheep). There were no significant differences between species and regions. Considering the social and economic importance of goats and sheep raising in the semi-arid region, it is essential to establish preventive measures to control imports of ruminants from these areas.