ABSTRACT
Due to limited knowledge of Siphonaptera fauna of the Cavia aperea (Brazilian guinea pig) in the State of Rio Grande do Sul, 43 specimens were examined. Six percent of the Brazilian guinea pigs were parasitized with Siphonaptera, which were identified as Polygenis (Neopolygenis) atopus and Polygenis (Polygenis) axius proximus (Rhopalopsyllidae), both with 2.3% of prevalence. P. (Neopolygenis) atopus and P. (Polygenis) axius proximus are reported for the first time on C. aperea in the State of Rio Grande do Sul, Southern Brazil.
Subject(s)
Animals , Guinea Pigs/parasitology , Guinea Pigs/blood , Brazil , Parasites/isolation & purification , SiphonapteraABSTRACT
I was studied the histology of Amblyomma tigrinum (Ixodidae) an ixodid fick. Three A. tigrinum engorged females were dissected, collected ovary and tracheae, and fixed in Bouin's aqueous fixative during 24 hours; the organs were cut at a thickness of 6-7 um and stained by hematoxylin-eosin. Ovary of A. tigrinum (Fig. 1) showed two cellular layers, similar to the ovary of D. andersoni and B. microplus, being one outer (oocyts) and the inner layer (epithelial cells). Trachea (Fig. 2) showed a cellular layer and a chitions spiral, similar to D. andersoni
Subject(s)
Ambystoma/anatomy & histology , Ovary/physiology , Trachea/physiologyABSTRACT
Observou-se a flutuaçäo populacional mensal dos adultos de Chrysomya albiceps, C. megacephala e C. putoria no campus da Universidade Federal de Pelotas. De fevereiro de 1983 a janeiro de 1985 apuraram-se 317458 dípteros dos quais 111233 pertenciam a espécie C. albiceps; as espécies C. megacephala e C. putoria apresentaram capturas respectivas de 27990 e 10009 espécimes. Quanto à flutuaçäo, as três espécies tiveram um aumento populacional em março, abril e maio, que foi reduzido rapidamente quando a temperatura média mensal atingia 18§C, mantendo-se reduzida de junho a fevereiro
Subject(s)
Population DynamicsABSTRACT
Foi observada a frequencia de Trichomonas vaginalis em mulheres do municipio de Pelotas, Rio Grande do Sul; de 485 exames realizados, 24,32% foram positivos para este protozoario