21 documents found, page 1 of 3
Hemócitos de Bradybaena similaris e Megalobulimus abbreviatus (Gastropoda, Styl...
Rohr,Roberta A.; Amato,Suzana B.Os hemócitos atuam no sistema de defesa contra organismos invasores e partículas estranhas, auxiliando o reconhecimento do que é próprio do corpo dos grastrópodes e o que não é. São escassas as informações e estudos sobre os hemócitos em espécies de moluscos saudáveis (sem infecções), principalmente em Bradybaena similaris (Fèrussac, 1821) and Megalobulimus abbreviatus (Bequaert, 1948). Portanto, este trabalho ...
Helminths of introduced house sparrows (Passer domesticus) in Brazil: does popu...
Calegaro-Marques,Cláudia; Amato,Suzana B.Species introductions have altered host and parasite diversity throughout the world. In the case of introduced hosts, population age appears to be a good predictor of parasite richness. Habitat alteration is another variable that may impact host-parasite interactions by affecting the availability of intermediate hosts. The house sparrow (Passer domesticus (Linnaeus, 1758)) is a good model to test these predicti...
Redescription of Temnocephala iheringi (Platyhelminthes: Temnocephalida) based ...
Seixas,Samantha A.; Amato,José F. R.; Amato,Suzana B.The original description of Temnocephala iheringi Haswell, 1893 was based on specimens collected by Hermann von Ihering from undetermined ampullariid apple snails, which at that time were identified as Ampullaria sp., and sent to William H. Haswell, with the type locality simply indicated as Brazil. The type specimens studied by Haswell were not found in the scientific collections of Brazil, Europe or Australia...
First report of Temnocephala haswelli (Platyhelminthes: Temnocephalida) in Poma...
Seixas,Samantha A.; Amato,José F. R.; Amato,Suzana B.The impact of the discovery of Temnocephala haswelli Ponce de Léon, 1989, described as ectosymbionts of ampullariid apple snails outside of Uruguay, motivated us to collect a large number of specimens of Pomacea canaliculata (Lamarck, 1822) from several localities in the southern portion of the state of Rio Grande do Sul. This species was recorded three times after its description: in a study of chromosomes, in...
First report of Temnocephala rochensis (Platyhelminthes: Temnocephalida) from P...
Seixas,Samantha A.; Amato,José F. R.; Amato,Suzana B.Temnocephala rochensis Ponce de Léon, 1979, was the second of four species of Temnocephala Blanchard, 1849 to be described as ectosymbiont of ampullariid apple snails, Pomacea canaliculata (Lamarck, 1822). There have been no records of this Uruguayan species after its initial description. As part of the present study, 111 specimens of P. canaliculata were collected between 2003 and 2009. Temnocephalans found in...
Diploposthe laevis (Bloch) Jacobi (Eucestoda, Hymenolepididae) from Netta pepos...
Silveira,Eliane F. da; Amato,Suzana B.One hundred eight rosy-billed pochards, Netta peposaca (Vieillot, 1816), collected in Brazil and Argentina were examined for endoparasites. Collection sites included the municipalities of Santa Vitória do Palmar and Jaguarão, Rio Grande do Sul State, Brazil (wintering site) and Alvear, Corrientes Province, northern Argentina (nesting site). Birds were frozen in dry ice after collection. During necropsy they wer...
Prosthogonimus ovatus (Rudolphi) (Digenea, Prosthogonimidae) em três espécies d...
Monteiro,Cassandra M.; Amato,José F. R.; Amato,Suzana B.Três espécies de aves, dois anatídeos, Dendrocygna bicolor (Vieillot, 1816) (marreca-caneleira) e Netta peposaca (Vieillot, 1816) (marrecão) e um phalacrocoracídeo, Phalacrocorax brasilianus (Gmelin, 1789) (biguá) foram coletados em vários locais na Província da Planície Costeira e no Lago Guaíba, Estado do Rio Grande do Sul. O número de aves examinadas de cada espécie de hospedeiro, assim como os valores de pr...
A new species of Temnocephala Blanchard (Platyhelminthes, Temnocephalida) ectos...
Amato,José F. R.; Seixas,Samantha A.; Amato,Suzana B.Temnocephala minutocirrus sp. nov., an ectosymbiont on Cryphocricos granulosus De Carlo, 1967, is described from the State of Rio Grande do Sul, southern Brazil. One hundred and nine naucorids were examined, of which 36 (33%) were positive for this species of Temnocephala Blanchard, 1849. In one sample of 94 creeping water bugs, 49 (52%) were 4th instar nymphs, 6% of which were infested; 45 (48%) were adults, e...
Morfologia externa de espécimes adultos de Paratanaisia bragai (Santos, 1934) (...
Brandolini,Solange V.P.B.; Amato,Suzana B.Espécimes adultos de Paratanaisia bragai foram coletados de ductos renais de Columba livia infectados naturalmente, fixados em glutaraldeído 2,5% e processados para microscopia eletrônica de varredura. Foram identificados dois tipos distintos de escamas, escamas bífidas e simples, dispostas em fileiras transversais no tegumento das faces dorsal e ventral do corpo. Também mostrando em detalhes a ventosa oral sub...
Belostoma dilatatum (Dufour) (Hemiptera, Belostomatidae) hosting metacercariae ...
Amato,Suzana B.; Amato,José F. R.Giant water bugs (aquatic Heteroptera), Belostoma dilatatum (Dufour, 1863), were collected in rice plantation water canals, in the Municipality of Eldorado do Sul, outskirts of Porto Alegre, State of Rio Grande do Sul, southern Brazil. Five specimens were dissected with the objective of finding metacercariae of digenetic trematodes. Four of them (80%) were positive for metacercarial cysts of Stomylotrema vicari...