RNA interference (RNAi) represents the only method currently available for manipulating gene-specific expression in Schistosoma spp., although application of this technology as a functional genomic profiling tool has yet to be explored. In the present study 32 genes, including antioxidants, transcription factors, cell signaling molecules and metabolic enzymes, were selected to determine if gene...

We propose Tinamutrema as a new genus for Brachylaima centrodes (Braun, 1901) Dollfus, 1935 and for T. canoae, as a new species inhabiting tinamus in the Area de Conservaci6n Guanacaste, Costa Rica. Specimens from Costa Rica resemble B. centrodes in having an elongate body, pretesticular genital pore and terminal genitalia, intercecal uterine loops occupying all available space between the ante...

The Coccidia and the Cryptosporidia infect both coldand warm-blooded vertebrates, yet members of the genera Toxoplasma, Eimeria, Sarcocystis, and Cryptosporidium (which mostly parasitize the latter hosts) have received most of the attention by far because of their importance to human and veterinary health. Our knowledge about a wide array of apicomplexans found in fish, amphibians, and reptiles...

SUMMARY Studies were made of the germinal development in the mother and daughter sporocysts of C. elephantis in experimental infections *of the snail intermediate host. A few infections of another species with a much larger cercaria also developed in the experimentally infected snails . Very rapid multiplication of the germinal cells takes place in the early stages of the mother sporocysts and ...

Six new species of coccidia are described from endangered Phelsuma spp. geckoes (Sauria: Gekkonidae) endemic to Mauritius, Indian Ocean. Five new species (3 Eimeria and 2 Isospora species) are described from Phelsuma rosagularis Vinson et Vinson; all lack a micropyle and an oocyst residuum, and all have a sporocyst residuum. Oocysts of Eimeria swinnertonae sp. n. are ellipsoidal, 22.2 x 17.8 (2...

Schistosoma mansoni is a digenean parasite known for its importance as a human pathogen. Compared with the other genera belonging to the digenean families, the Schistosoma genus is characterized by having acquired gonochorism from hermaphroditic ancestors [1]. Sex is genetically determined in the egg [2] and female schistosome is heterogametic (ZW) such as lepidoptera, reptiles and birds. A mar...

Of 35 tuco-tucos (Ctenomys opimus) collected in Bolivia, South America, 31 (88%) had eimerian oocysts in their feces at the time they were examined. Eighteen (58%) of the 31 infected animals were concurrently infected with 2 or 3 eimerian species. Four species of Eimeria were recovered and are described as new species based on the characteristics of sporulated oocysts. Oocysts of Eimeria granif...

Nevole M., L. Malota, B. Koudela: Catalytic Activities of Selected Serum Enzymes in Experimental Sarcocystosis in Calves. Acta vet. Brno, 55, 1986: 81-84. , , Activities of blood serum enzymes, creatine kinase (CPK, EC 2.7.3.2.), lactate dehydrogenase (LDH, EC 1.1.1.27), and gamma-glutamyl transferase (GGT, EC 2.3.2.1.) were investigated in seven calves during the course of experimental sarcocy...

Despite decades of prevention and control efforts, the water-borne parasitic disease schistosomiasis remains endemic in 74 of the world’s developing nations. Five species of the Schistosoma trematode are pathogenic to humans; S. japonicum is the infective agent of schistosomiasis in China and the Philippines. The purpose of this research is to develop a sensitive and specific technique for the ...