Livros e Publicações
URI permanente para esta coleçãohttps://bdc.icmbio.gov.br/handle/cecav/1412
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Item Free-living birds from Caatinga and Atlantic Forest of northeast Brazil as hosts of Enterobacterales, Mycoplasma spp., and Chlamydia psittaci(Ornithology Research, 2021) Lugarini, Camile; Silva, Luana T. R.; Amorim, Marcus M. R. de; Lima, Débora C. V. de; Santos, Sandra B.; Saidenberg, André B.Apparently healthy birds in protected areas in northeastern Brazil were investigated, whether shedding bacterial pathogens to the environment. We determined whether pathogens varied according to the level of the shared habitat human of each protected area, the type of vegetation, hosts’ group and different history traits as migration and foraging behavior, body mass, and sensitivity to human impacts. In addition, we also investigated whether the protected areas were preserving the wildlife from antibiotic-resistant bacteria. For that, oropharyngeal and cloacal swabs were collected from 507 individuals of 91 species. In the culture-dependent method, most of the bacterial isolates belonged to Enterobacterales, with the highest frequency of Klebsiella aerogenes (20.5%) and Escherichia coli (19.3%). There was no relationship between Enterobacterales occurrence according to the type of vegetation, hosts’ group and history traits as foraging behavior (foraging stratum and main trophic category), and body mass, and there was a low association between the protected area and Enterobacterales (φ = 0.17). For Mycoplasma, 10.8% of PCR-tested individuals were positive, with high variation among sampled families, but none of them was positive for M. gallisepticum and M. synoviae. The protected area closer to human settlements presented more resistant isolates to broad-spectrum antibiotics gentamicin (φ = 0.45) and tetracycline (φ = 0.37) and also presented the two positive samples to primary pathogenic Chlamydia psittaci. The birds in the sampled protected areas may host and spread potentially pathogenic microorganisms as C. psittaci and Citrobacter freundii in low frequency in balanced co-existence of host/parasite. However, antibiotic-resistant Enterobacterales in protected areas might represent an impact on its bird populations and on the conservation of the environment.Item Which birds are Brazilians seeing on urban and non‑urban feeders?(Ornithology Research, 2022) Alexandrino, Eduardo Roberto et al.Many studies have shown the positive and negative impacts of feeding wild birds using feeders; however, none of them considered case studies in Brazil. In 2020, social isolation measures imposed by COVID-19 boosted Brazilians’ interest in bird feeders, encouraging a group of birders to create an event (called JaneLives) to broadcast simultaneous live images of feeders across the country. Using the structure of JaneLives and relying on volunteers, we investigated which species visit Brazilian bird feeders, and discussed the efectiveness of our opportune citizen science initiative implemented during this event. Forty-eight feeders (19 urban and 29 non-urban) included in six biomes were sampled during nine JaneLives sessions (May–November 2020). The audience watched 133 species, 104 of which were visiting feeders. Non-urban feeders (n = 94) had higher richness than urban feeders (n = 68), but there were shared and unique species in both strata. Thraupidae, Turdidae, small, and medium birds (< 90 g) were the most common at the feeders. Owners of 23 feeders did data sampling at least once, while the other 25 feeders were sampled by 25 online birders (94.8% of their bird records were reliable). The narration that accompanied each JaneLives session enabled the audience to learn about Brazilian birds and increased environmental awareness. Audience numbers declined over the events, but the number of online birders was not afected. Ecolodges and parks that broadcasted their feeders received new clients afterwards. The events generated social interaction and pragmatic discussions about the usage of feeders, indicating that our citizen science initiative has potential for future research.