Repositório Digital

A- A A+

Desenvolvimento de Eurytrema coelomaticum (Giard & Billet) (Digenea, Dicrocoeliidae) em Bradybaena similaris (Férussac) (Gastropoda, Xanthonychidae)

.

Desenvolvimento de Eurytrema coelomaticum (Giard & Billet) (Digenea, Dicrocoeliidae) em Bradybaena similaris (Férussac) (Gastropoda, Xanthonychidae)

Mostrar registro completo

Estatísticas

Título Desenvolvimento de Eurytrema coelomaticum (Giard & Billet) (Digenea, Dicrocoeliidae) em Bradybaena similaris (Férussac) (Gastropoda, Xanthonychidae)
Outro título Development of ElIrylrellla coel omaliclIlII (Giard & Billet) (Digenea, Dicrococliidac) in Brat/ybaella silllilaris (Férussac) (Gastropoda, Xanthonychidae)
Autor Brandolini, Solange Viana Paschoal Blanco
Amato, Suzana Bencke
Abstract To follow the larval development of Ewytrema coelomaliclIm (Giard & Billel, 1892) in 8radybaena similaris (Férussac, 1821) snails were separaled in three classes using the shell diameter: Class A (14.5-10.2 mm), Class B (10.1-6.9 mm) and Class C (6.8-2.6 mm). Only snails belonging to classes A and B acquired the inteclion. Specimens of E. coelomalicum removed from lhe pancrealic ducts were exposed to lhree physiological solutions: Earle, Locke and saline 0.85%, to obtain eggs for the experimental infections. The Locke solution induced the best egg release. The route ofmigration lhe intramolluscan development of E. coelomalicum was studied with the aid of histology. The minimal period of intramolluscan development, ending at the expelling of daughler sporocysts, was 107 days for the snails intecled in March, and 79 days for lhe snails infecled in November. The Sludenl "t" test and the Chi-square lest showed a significant difterence (u = 5%) between the two periods, although the mean lemperalure regislered during the experiments did not signiticanlly diftered (u = 5%). The eliminalion of daughter sporocysls occurred lhrough lhe snail's pneumostome, and always aI night. Most sporocysts were eliminated aI intervals thal varied between one to three days, without reglllarity. The time ofelimination ofthe dallghter sporocysts was ditlerenl for the two intection period studied: 12 weeks for the snails infecled in March, and llu'ee weeks for lhos e infecled in November. Positive correlalion between the number of sporocysts expelled by the snail hOSI and higher lemperatures registered in the laboratoy was observed. This correlation was more evident in November infection.
Contido em Revista Brasileira de Zoologia. São Paulo. Vol. 18, n. 2 (2001), p. 499-510
Assunto Bradybaena similaris
Eurytrema coelomaticum
[en] Bradybaena similaris
[en] Eurylrema coelomaticum
[en] Intramolluscan development
[en] Route of migration
[en] Sporocyst eliminalion rhythm
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/107460
Arquivos Descrição Formato
000300415.pdf (3.551Mb) Texto completo Adobe PDF Visualizar/abrir

Este item está licenciado na Creative Commons License

Este item aparece na(s) seguinte(s) coleção(ões)


Mostrar registro completo

Percorrer



  • O autor é titular dos direitos autorais dos documentos disponíveis neste repositório e é vedada, nos termos da lei, a comercialização de qualquer espécie sem sua autorização prévia.
    Projeto gráfico elaborado pelo Caixola - Clube de Criação Fabico/UFRGS Powered by DSpace software, Version 1.8.1.