Parasitismo em aves silvestres residentes e migratórias da Ilha da Marambaia, Estado do Rio de Janeiro1

Abstract

ABsTRACT.-Brum W.M., Da Costa Pereira M.A.V., Vita G.F., Ferreira I., Mello E.R., Aurnheimer R.C.M., Sanavria A. & Padua E.D. 2016 The study intended to analyze the population of migratory and resident wild bird species from Marambaia island, located in the municipality of Mangaratiba, Rio de Janeiro state, regarding the presence of microorganisms in blood smears during the year of 2009. In order to achieve the goal, 86 individuals of 22 bird species were captured using mist nets; peripheral blood was collected and blood smears performed. The birds were released after examined and sampled in situ. The diagnostic results were 11 (12.80%) birds positive for Plasmodium sp., one (1.16%) for microfilaria and 16 (18.60%) for Borrelia sp. Ticks identified as Amblyomma sp. (Ixodidae) were observed parasiting the sampled birds, suggesting that a relationship parasite-vector-host exists between these ticks and the Borrelia genus. This study should be expanded to other regions so that its results may favour other surveys, focused on conservation of wild birds in their habitat.

Endoparasites in Birds of Guaribas Biological Reserve, Atlantic Forest, Paraíba State, Brazil

“…If chronic infections with low parasitemia are the rule in the studied population, it is likely that our study underestimated the true prevalence of these parasites. All positive samples came from C. talpacoti, whereas individuals from other species known to frequently host haemosporidians, such as the as Rupornis magnirostris (23) , Elaenia cristata (20) , Formicivora grisea, Turdus leucomelas (21,23,26) and Coereba flaveola (22) , were found to be negative in our study. The haemoparasite found here were morphologically compatible with Haemoproteus columbae, a species that has been reported in C. talpacoti (27,28) , including in Brazil (27,29) .…”

“…Haemosporidian parasites were relatively uncommon (2.29%) compared to studies conducted in Brazil using microscopy (19)(20)(21)(22)(23) . Habitat modification can increase the prevalence of these parasites (24) and the low prevalence might be explained by the protection of the habitat and its avifauna.…”

First record of microfilariae in Antilophia galeata (Aves: Pipridae)

“…A. galeata nests are open and can be located from 1.15 to 5.64 meters (Marçal & Lopes, 2019). Previous studies have registered other species of Brazilian birds that build open nests, infected by microfilariae, such as: Formicivora grisea and Formicivora rufa (Silva, 1988;Willis & Oniki 1988;Silveira et al, 2010); Camptostoma obsoletum (Fecchio et al, 2011); Thamnophilus pelzelni (Silva & Carmo, 2015;Sebaio et al, 2012); Saltator atricollis (WikiAves, 2020;Brum et al, 2016). In addition, the individual infected in the present study was female, and it is known that the females of A. galeata are solely responsible for the incubation (Marçal & Lopes, 2019).…”

“…Some species of microfilariae may have their densities increased in peripheral blood at night (Dreyer & Dreyer, 2001). On the other hand, the majority of Passerine birds are diurnal, restricting their captures at daytime (Haas et al, 2011;Sebaio et al, 2012;Brum et al, 2016). Despite the methodological limitations, microfilariae have been found in bird species from all around the world (Atawal et al, 2019;Brum et al, 2016;Huang et al, 2016;Haas et al, 2011;Clark et al, 2016. The species in this study was the Helmeted Manakin (Antilophia galeata, Lichtenstein, 1823), an endemic Cerrado bird that inhabits the riparian forest understory (Sick, 2001).…”

The first record of Centrocestus formosanus (Trematoda: Heterophyidae) in southern Brazil supported by molecular data

“…Some birds were already recorded infected with C. formosanus, as Bubulcus ibis coromandus Boddaert, 1783 (Ardeidae), Butorides striata Linnaeus, 1758 (Ardeidae) and Nycticorax nycticorax Linnaeus, 1758 (Ardeidae) (Pinto & Melo 2010). The monitoring data of the Parque do Ingá (Maringá 2007) recorded Butorides striata, and could be a candidate to the definitive host of C. formosanus in this environment, and this species presents a migratory behavior (Brum et al 2016). Among the species occurring in the Parque do Ingá, future investigations are necessary considering the feeding habits of different birds, as Aramides saracura Spix, 1825 (Rallidae), Ardea alba Linnaeus, 1758 (Ardeidae), Egretta thula Molina, 1782 (Ardeidae), Megaceryle torquata Linnaeus, 1766 (Alcedinidae), Nannopterum brasilianus Gmelin, 1789 (Phalacrocoracidae) and Pitangus sulphuratus Linnaeus, 1766 (Tyrannidae), since eventually they could serve as host of C. formosanus.…”