RELACIONAMENTO DE Tanaisia bragai (DIGENEA, EUCOTYLIDAE) E SEU HOSPEDEIRO INTERMEDIARIO, Subulina octona (GASTROPODA, SUBULINIDAE) SOB CONDICOES EXPERIMENTAIS

The influence of caffeine and thymol on the survival, growth and reproduction of Subulina octona (Brugüière, 1789) (Mollusca, Subulinidae)

“…It is referred as an intermediate host in the life cycle of Platynosomum illiciens (Braum, 1901) (Digenea, Dicrocoeliidae) (Maldonado, 1945) and of Aelurostrongylus abstrusus (Railliet, 1898) (Nematoda, Angiostrongylidae) (Ash, 1962), both parasites of the domestic cat. It has also been cited as an intermediate host of Tanaisia bragai (Santos, 1934) (Digenea, Eucotylidae) (Maldonado, 1945;Brandolini, 1997), Postharmostomum gallium Witenberg, 1923 (Digenea, Brachylaimidae) (Alicata, 1940;Duarte, 1980), Davainea proglottina (Davaine, 1860) (Cestoda, Davaineidae) (Van Volkenberg, 1937in Maldonado, 1945, all of which are parasites of birds and of Angiostrongylus vasorum (Baillet, 1866) Kamensky, 1905 (Nematoda, Angiostrongylidae), which is a parasite of canids (Bessa et al, 2000). Due to the high cost and danger in the use of toxic products to combat the snails, the molluscicidal substances that have vegetable origin can be a safe way of controlling these animals.…”

Pathology and first occurrence of the kidney trematode Paratanaisia bragai (Santos, 1934) Freitas, 1959 (Digenea: Eucotylidae) in Phasianus colchicus L., 1758, from Brazil

“…In Brazil, the species is one of the most prevalent in domestic birds and has already been reported in the kidneys of the pigeon (Columba livia Gmelin, 1798), the ruddy ground-dove (Columbina talpacoti Temminck, 1811), the domestic chicken (Gallus gallus domesticus Linnaeus, 1758), the guinea fowl (Numida meleagris Linnaeus, 1758), the turkey (Meleagris gallopavo Linnaeus, 1758), and also of a wild galliform, the spot-winged wood-quail (Odontophorus capueira Spix, 1825) (Travassos et al 1969, Costa et al 1975, Silva et al 1990, Menezes et al 2001, Pinto et al 2004). The intermediate hosts for P. bragai are the terrestrial snails Subulina octona Brugière, 1789 and Leptinaria unilamellata Orbigny, 1835 (Keller & Araujo 1992, Brandolini et al 1997.…”

“…In Brazil, the species is one of the most prevalent in domestic birds and has already been reported in the kidneys of the pigeon (Columba livia Gmelin, 1798), the ruddy ground-dove (Columbina talpacoti Temminck, 1811), the domestic chicken (Gallus gallus domesticus Linnaeus, 1758), the guinea fowl (Numida meleagris Linnaeus, 1758), the turkey (Meleagris gallopavo Linnaeus, 1758), and also of a wild galliform, the spot-winged wood-quail (Odontophorus capueira Spix, 1825) (Travassos et al 1969, Costa et al 1975, Silva et al 1990, Menezes et al 2001, Pinto et al 2004). The intermediate hosts for P. bragai are the terrestrial snails Subulina octona Brugière, 1789 and Leptinaria unilamellata Orbigny, 1835(Keller & Araujo 1992, Brandolini et al 1997.The parasite has been considered of low pathogenicity, causing mild gross and microscopic lesions in the infected kidneys (Santos 1934, Maldonado 1941, Barretto & Filho 1942, Menezes et al 2001, Pinto et al 2004 ertheless, high parasitic burdens and the nature of the hosts, such as the domestic pigeon and the Puerto Rican plain pigeon (Columba inornata wetmorei), can determine the settling of clinical signs that include apathy, loss of weigh, diarrhoea and death (Portugal et al 1972, Arnizaut et al 1992.These controversial data, referred in the few available studies of the pathology induced by this trematode and the fact that after decades of the first report of the species, two new hosts for P. bragai, the guinea fowl and the ruddy ground-dove have been assigned (Menezes et al 2001, Pinto et al 2004, indicate that the range of the hosts and the lesions associated to this species are not well established so far.This investigation reports to data on the prevalence, mean intensity, mean abundance and range of infection of the digenetic trematode P. bragai and to the gross and microscopic lesions associated with this parasite in ringnecked pheasants from backyard flocks in the state of Rio de Janeiro, Brazil, with the establishment of a new host record. …”

Desenvolvimento larval de Paratanaisia bragai (Santos) (Digenea, Eucotylidae) sob condições experimentais

“…9). BRANDOLINI et al (1997), verificaram uma redução no número de ovos por postura e aumento no intervalo de realização de posturas por espécimes de S. octona infectados experimentalmente com P. bragai. Esses autores caracterizaram a influência do parasito sobre o processo reprodutivo do molusco como uma castração parasitária do tipo indireto e nutricional, por não terem observado nenhuma metacercária com ação direta sobre a gônada do molusco.…”