Domingos Baggio

Ectoparasites Ixodida Leach, 1817 on wild mammals in the state of Paraná, Brazil

A taxonomical and ecological study was made on 264 samples of 12 species of ectoparasite ixodides collected on wild mammals from several natural regions of Parana state, Brazil. These species of ticks as their hosts are listed by their identified evolutive forms and capture locations. A review of the early studies on the Ixodida from South Brazil is made considering the frequency of the parasite species on each host concerning the geographic distribution of such species. This paper is a contribution to the knowledge of the Ixodidae ectoparasites species of wild mammals in Brazil.

Contaminação por ácaros em arroz polido e feijão comercializados a granel

OBJETIVO: Avaliar a situacao de contaminacao por acaros em graos comercializados a granel em nove mercados municipais da cidade de Sao Paulo, no periodo de novembro/1989 a novembro/1990. METODOS: Foram analisadas microscopicamente apos tamisacao 25 amostras de arroz polido e 53 de feijao, semanalmente ate completar 42 dias, mantidas a temperatura ambiente. Outras aliquotas das amostras foram mantidas em estufa a 25°C e 75% de umidade relativa do ar (URA), durante 28 dias. RESULTADOS: As amostras apresentaram-se negativas para acaros no primeiro dia de analise, sendo detectados apos incubacao. As amostras mantidas em estufa apresentaram maior percentual de exames positivos para acaros (incidencia): 31,7% (1.845 acaros). As amostras mantidas no ambiente apresentaram 6,9% (45 acaros). As amostras de arroz polido apresentaram maior contaminacao do que as amostras de feijao. O maior percentual de acaros ocorreu em temperatura media mensal de laboratorio de 21,5oC a 22,5°C (37,8%) e a uma umidade de 73,5% a 74,5% (31,1%). CONCLUSOES: A especie predominante foi Tyrophagus putrescentiae. A populacao de acaros apresentou maior proliferacao na primavera, verao e inicio do outono, devido a influencia da temperatura e da URA.Tais resultados confirmam a importância de aprimorar o armazenamento de graos, visando a nao proliferacao de acaros.OBJECTIVE To evaluate mite contamination rate in grains commercialized in nine municipal markets of the city of São Paulo, in the period from November 1989 to November 1990. METHODS 23 samples of polished rice and 53 samples of beans were microscopically examined after sieving, once a week and during 42 days at air temperature. Other sample fractions were kept in an incubator at 25 degrees C and 75% Relative Humidity (RH) during 28 days. RESULTS Samples were negative for mites in the first day of analysis and were detected after incubation. Samples incubated revealed a higher percentage of positive examinations for mites (incidence): 31.7% (and 1,845 mites); while samples kept at air temperature showed only 6.9% (and 45 mites). Samples of polished rice were more contaminated in comparison to the ones of beans. There was a larger amount of mites when the mean monthly temperature of the laboratory was between 21.5 degrees C to 22.5 degrees C (37. 8%) and humidity between 73.5% to 74.5% (31.1%). CONCLUSIONS The predominant species was Tyrophagus putrescentiae and other identified species were Blomia tropicalis, Cheyletus spp., Blattisocius tarsalis, and others. Mite population had a higher proliferation rate during spring, summer and in the beginning of autumn, due to highest temperature and humidity. These results confirm the importance of improving grains storage, to avoid mites proliferation.

On phoresy of hematophagous ectoparasitic acari (Parasitiformes: Ixodidae and Dermanyssidae) on coleoptera observed in Brazil

Abstract Phoresy of a tick, Anocentor nitens (Neumann), on a lampyrid beetle and of the chicken mite, Dermanyssus gallinae (DeGeer), on a passalid beetle, both from Brazil, are reported.

Avaliação da presença de ácaros em cereais armazenados na grande São Paulo

O exame microscopico de 160 amostras de cereais (arroz, feijao, trigo, milho, a veia, ervilha e sorgo), 40% fornecidas pelo Instituto Adolfo Lutz e provenientes de distribuidores como COBAL, CIBRAZEM, PETROPACK, CEAGESP, DECOM e do 2o Exercito, e 60% adquiridas em mercadinhos e armazens na Grande Sao Paulo, feito no ato e apos 42 dias de incubacao a 25°C e 70% UR revelou que 49% das amostras apresentavam populacoes de acaros primarios de alimentos armazenados. Destas, 48% revelaram a presenca de Tyrophagus putrescentiae (Schrank), 17,5% Aleuroglyphus ovatus (Troupeau), 6,8% Glycyphagus domesticus (DeGeer), 4,37% Chortoglyphus arcuatus (Troupeau), 3,8% Suidasia pontifica Oudemans, 3,12% Blomia tropicallis Bronswijck, Cook & Oshima, 1,25% Histiostoma sp. e Dermatophagoides pteronyssinus (Trouessart). Acaros secundarios tambem foram encontra dos destacando-se Tarsonemus sp., Cheyletus malaccensis Oudemans e Blattisocius dentriticus (Berlese), entre outros. As amostras originarias dos grandes distribuidores apresentavam bem menos acaros do que aquelas dos pequenos armazens onde a rotatividade de estoque e bem menor. O resultado positivo para acaros de amostras mantidas em incubador por 42 dias quando seu exame no ato nao os revelou, mostra que o simples exame de uma amostra de cereal num dado momento nao exclui a hipotese dele estar contaminado por ovos de acaros primarios de alimentos. Dentre os insetos, o mais frequente foi o gorgulho Sitophilus orizae (L.) presente em amostras de arroz, milho e trigo.

Censo coprológico no município de Peruibe (litoral sul do Estado de São Paulo): registro de casos autóctones de esquistossomose mansoni

The results of feces examinations, in order to know the degree and variation of intestinal parasitoses among the inhabitants of Peruibe, a littorean city in the south of the State of Sao Paulo, Brazil, are presented. Among 475 persons, children and adults, living in 20% of the houses of the town, 95.3% proved to be parasited. The percentual results of helminths and protozoa infestations are related in tables. Seven autochthonous cases of mansons schistomiasis have been discovered, i.e., a percentage of 5.89%.Foram apresentados os resultados dos exames coprologicos, para levantamento das parasitoses intestinais na populacao da zona urbana do municipio de Peruibe (litoral sul do Estado de Sao Paulo, Brasil). Foram constatados 29 casos de esquistossomose mansoni, sendo 7 considerados autoctones de Peruibe e 5 do litoral sul do Estado de Sao Paulo.

A rare finding of Trouessartia (Acari: Trouessartiidae) on Passalidae (Insecta: Coleoptera)

Abstract A rare finding of nymphs of feather mites of the genus Trouessartia on a passalid beetle in Brazil is reported.

Nota sobre a ocorrência do parasito Riccardoella limacum (Schrank, 1781) (Acari, ereynetidae) em criações de escargot (Helix pomatia L. e H . aspersa L.) no Brasil

The slug-mite, Riccardoella limacum (Schrank) is reported from Helix aspersa L. and H.pomatia L. farms in Belo Horizonte, Minas Gerais and in Embu, Sao Paulo, Brazil. Death of escargots is correlated with the presence of high numbers of this mite.

Coprologic census of Peruibe (Southern town in the coast of the State of São Paulo): record of autochthonous cases of manson's schistosomiasis

The results of feces examinations, in order to know the degree and variation of intestinal parasitoses among the inhabitants of Peruibe, a littorean city in the south of the State of Sao Paulo, Brazil, are presented. Among 475 persons, children and adults, living in 20% of the houses of the town, 95.3% proved to be parasited. The percentual results of helminths and protozoa infestations are related in tables. Seven autochthonous cases of mansons schistomiasis have been discovered, i.e., a percentage of 5.89%.Foram apresentados os resultados dos exames coprologicos, para levantamento das parasitoses intestinais na populacao da zona urbana do municipio de Peruibe (litoral sul do Estado de Sao Paulo, Brasil). Foram constatados 29 casos de esquistossomose mansoni, sendo 7 considerados autoctones de Peruibe e 5 do litoral sul do Estado de Sao Paulo.

Coprological census of Peruíbe (southern town on the coast of the State of Sao Paulo). Record of autochthonous cases of Schistosoma mansoni infection.

The results of feces examinations, in order to know the degree and variation of intestinal parasitoses among the inhabitants of Peruibe, a littorean city in the south of the State of Sao Paulo, Brazil, are presented. Among 475 persons, children and adults, living in 20% of the houses of the town, 95.3% proved to be parasited. The percentual results of helminths and protozoa infestations are related in tables. Seven autochthonous cases of mansons schistomiasis have been discovered, i.e., a percentage of 5.89%.Foram apresentados os resultados dos exames coprologicos, para levantamento das parasitoses intestinais na populacao da zona urbana do municipio de Peruibe (litoral sul do Estado de Sao Paulo, Brasil). Foram constatados 29 casos de esquistossomose mansoni, sendo 7 considerados autoctones de Peruibe e 5 do litoral sul do Estado de Sao Paulo.