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Search Results: 1 - 10 of 466412 matches for " Edson A. Adriano "
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Prevalence and intensity of Haemoproteus columbae in three species of wild doves from Brazil
Adriano, Edson A;Cordeiro, Nelson S;
Memórias do Instituto Oswaldo Cruz , 2001, DOI: 10.1590/S0074-02762001000200007
Abstract: the prevalence and intensity of blood parasites in three species of wild doves were studied in the municipality of junqueirópolis, in the western region of the state of s?o paulo, brazil. three species of doves were surveyed: 331 specimens of zenaida auriculata des murs, 1847, 62 specimens of columbina talpacoti temminck, 1811 and 57 specimens of scardafella squammata lesson, 1831. haemoproteus columbae kruse, 1890 was found in blood from all the doves species. the prevalence of this parasite was 100% in z. auriculata, 51.6% in c. talpacoti and 19.3% in s. squammata. specimens of z. auriculata had a higher intensity of infection than the other doves species.
Prevalence and intensity of Haemoproteus columbae in three species of wild doves from Brazil
Adriano Edson A,Cordeiro Nelson S
Memórias do Instituto Oswaldo Cruz , 2001,
Abstract: The prevalence and intensity of blood parasites in three species of wild doves were studied in the municipality of Junqueirópolis, in the western region of the State of S o Paulo, Brazil. Three species of doves were surveyed: 331 specimens of Zenaida auriculata Des Murs, 1847, 62 specimens of Columbina talpacoti Temminck, 1811 and 57 specimens of Scardafella squammata Lesson, 1831. Haemoproteus columbae Kruse, 1890 was found in blood from all the doves species. The prevalence of this parasite was 100% in Z. auriculata, 51.6% in C. talpacoti and 19.3% in S. squammata. Specimens of Z. auriculata had a higher intensity of infection than the other doves species.
Eimeria curvata n. sp.(Apicomplexa: Eimeriidae) in Columbina talpacoti and Scardafella squammata (Aves: Columbidae) from Brazil
Adriano, Edson A;Thyssen, Patricia J;Cordeiro, Nelson S;
Memórias do Instituto Oswaldo Cruz , 2000, DOI: 10.1590/S0074-02762000000100008
Abstract: eimeria curvata is a new coccidian described in the doves columbina talpacoti and scardafella squammata from western of the state of s?o paulo, brazil. the oocysts are ovoid to ellipsoid, 18.3 (17-19) μm x 15.5 (15-17) μm, with a shape index of 1.2 (1.1-1.3). the wall is colorless, smooth and double-layered. a polar granule is present, but there is no micropyle or oocyst residuum. the sporocysts are elongate, 12.3 (11.5-13) μm x 5.8 (5.5-6) μm with a curved anterior portion and a smooth, thin, single-layered wall. the stieda body is protuberant and nipple-like; there is no substieda body. the sporozoites lie head-to-tail in the sporocyst and contain a large refractile body at the extremities. the sporocyst residuum contains small granules uniformly distributed in the middle of the sporocyst. the prevalence of e. curvata n. sp. was 17.4% and 12.8% in c. talpacoti and s. squammata, respectively.
Histophatology and ultrastructure of Henneguya caudalongula sp. n. infecting Prochilodus lineatus (Pisces: Prochilodontidae) cultivated in the state of S?o Paulo, Brazil
Adriano, Edson A;Arana, Sarah;Cordeiro, Nelson S;
Memórias do Instituto Oswaldo Cruz , 2005, DOI: 10.1590/S0074-02762005000200011
Abstract: the histological and ultrastructural characteristics of a new species of henneguya and the host reactions to infection by this species are reported. henneguya caudalongula sp. n. was found in the inter and intralamellar regions of the gills of prochilodus lineatus (valenciennes, 1836) cultivated at center for the research and management of continental fishing resources located in the municipality of pirassununga, state of s?o paulo, brazil. the plasmodia were white and round or ellipsoidal and measured 0.2 to 1 mm in length. the development of the parasite was asynchronous and the mature spores were fusiform, with a total length 71 ± 1.4 μm, body length of 16.6 ± 0.54 μm and width 4.6 ± 0.2 μm. the caudal process was 52.6 ± 1.5 μm long. the polar capsules were elongate (length 6.1 ± 0.19 μm, width 1.6 ± 0.15 μm) and of equal size. the polar filament was coiled in 10-11 turns. the prevalence of the parasite was 48.3% and did not vary significantly with the season or host size.
Myxobolus absonus sp. n. (Myxozoa: Myxosporea) Parasitizing Pimelodus maculatus (Siluriformes: Pimelodidae), a South American Freshwater Fish
Cellere, Eduardo F;Cordeiro, Nelson S;Adriano, Edson A;
Memórias do Instituto Oswaldo Cruz , 2002, DOI: 10.1590/S0074-02762002000100012
Abstract: a new myxoporean species is described from a freshwater fish in brazil. myxobolus absonus sp. n. was found infecting pimelodus maculatus captured in the river piracicaba, state of s?o paulo, brazil. cysts were found free in the opercular cavity. the spores are large (length-15.7 ± 1.5 μm, width-10.2 ± 0.7 μm; mean ± s.d.) and oval in shape, with the anterior end slightly pointed. the spore valves are relatively thin, smooth, and asymmetrical in a frontal view. the polar capsules are pyriform in shape, and unequal in size; the largest are 6.4 ± 0.7 μm long and 3.6 ± 0.5 μm wide, while the smallest are 4.2 ± 0.6 μm long and 2.5 ± 0.5 μm wide.
Brachylaima mazzantii (Trematoda): first record in Zenaida auriculata (Aves: Columbidae)
Adriano,Edson A.; Thyssen,Patricia J.; Cordeiro,Nelson S.;
Boletín chileno de parasitología , 2001, DOI: 10.4067/S0365-94022001000100009
Abstract: veintitrés ejemplares de zenaida auriculata des murs, 1847 fueron capturados en el municipio de junqueirópolis en la región oeste del estado de s?o paulo, brasil. brachylaima mazzantii (travassos, 1927) dollfus, 1935 fue encontrado parasitando a uno de los ejemplares examinados. este es el primer registro de este tremátodo en palomas del género zenaida
Eimeria curvata n. sp.(Apicomplexa: Eimeriidae) in Columbina talpacoti and Scardafella squammata (Aves: Columbidae) from Brazil
Adriano Edson A,Thyssen Patricia J,Cordeiro Nelson S
Memórias do Instituto Oswaldo Cruz , 2000,
Abstract: Eimeria curvata is a new coccidian described in the doves Columbina talpacoti and Scardafella squammata from western of the State of S o Paulo, Brazil. The oocysts are ovoid to ellipsoid, 18.3 (17-19) μm x 15.5 (15-17) μm, with a shape index of 1.2 (1.1-1.3). The wall is colorless, smooth and double-layered. A polar granule is present, but there is no micropyle or oocyst residuum. The sporocysts are elongate, 12.3 (11.5-13) μm x 5.8 (5.5-6) μm with a curved anterior portion and a smooth, thin, single-layered wall. The Stieda body is protuberant and nipple-like; there is no substieda body. The sporozoites lie head-to-tail in the sporocyst and contain a large refractile body at the extremities. The sporocyst residuum contains small granules uniformly distributed in the middle of the sporocyst. The prevalence of E. curvata n. sp. was 17.4% and 12.8% in C. talpacoti and S. squammata, respectively.
Myxobolus absonus sp. n. (Myxozoa: Myxosporea) Parasitizing Pimelodus maculatus (Siluriformes: Pimelodidae), a South American Freshwater Fish
Cellere Eduardo F,Cordeiro Nelson S,Adriano Edson A
Memórias do Instituto Oswaldo Cruz , 2002,
Abstract:
Brachylaima mazzantii (Trematoda): first record in Zenaida auriculata (Aves: Columbidae) Brachylaima mazzantii (Trematoda): primer registro en Zenaida auriculata (Aves: Columbidae)
Edson A. Adriano,Patricia J. Thyssen,Nelson S. Cordeiro
Boletín chileno de parasitología , 2001,
Abstract: Veintitrés ejemplares de Zenaida auriculata Des Murs, 1847 fueron capturados en el municipio de Junqueirópolis en la región oeste del estado de S o Paulo, Brasil. Brachylaima mazzantii (Travassos, 1927) Dollfus, 1935 fue encontrado parasitando a uno de los ejemplares examinados. Este es el primer registro de este tremátodo en palomas del género Zenaida
Molecular Phylogeny of the Myxobolus and Henneguya Genera with Several New South American Species
Mateus Maldonado Carriero, Edson A. Adriano, Márcia R. M. Silva, Paulo S. Ceccarelli, Antonio A. M. Maia
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0073713
Abstract: The present study consists of a detailed phylogenetic analysis of myxosporeans of the Myxobolus and Henneguya genera, including sequences from 12 Myxobolus/Henneguya species, parasites of South American pimelodids, bryconids and characids. Maximum likelihood and maximum parsimony analyses, based on 18 S rDNA gene sequences, showed that the strongest evolutionary signal is the phylogenetic affinity of the fish hosts, with clustering mainly occurring according to the order and/or family of the host. Of the 12 South American species studied here, six are newly described infecting fish from the Brazilian Pantanal wetland. Henneguya maculosus n. sp. and Myxobolus flavus n. sp. were found infecting both Pseudoplatystoma corruscans and Pseudoplatystoma reticulatum; Myxobolus aureus n. sp. and Myxobolus pantanalis n. sp. were observed parasitizing Salminus brasiliensis and Myxobolus umidus n. sp. and Myxobolus piraputangae n. sp. were detected infecting Brycon hilarii.
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