Mucilaginibacter sp. Strain Metal(loid) and Antibiotic Resistance Isolated from Estuarine Soil Contaminated Mine Tailing from the Fundão Dam

Vasconcelos, Ana Luisa Soares; Andreote, Fernando Dini; Defalco, Thaiane; Delbaje, Endrews; Barrientos, Leticia; Dias, Armando Cavalcante Franco; Gabriel, Fabrício Ângelo; Bernardino, Ângelo F.; Núñez-Montero, Kattia

doi:10.3390/genes13020174

Cited by 7 publications

(3 citation statements)

References 95 publications

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“…Massilia has mainly been identified from environmental sources, but also in animal feces 63 , while Mucilaginibacter is primarily found in soils and Lactococcus in plants 64 . Interestingly, some Mucilaginibacter species have been isolated from environments contaminated with heavy metals and are considered heavy metal resistant 65 , 66 . This raises the intriguing, albeit speculative, possibility that this genus was elevated in captive birds as a result of the dietary methylmercury treatment we applied to a subset of these birds, and then spread throughout the captive population through cross-contamination among cages within the holding facility.…”

Section: Discussionmentioning

confidence: 99%

Uropygial gland microbiota differ between free-living and captive songbirds

Grieves

Bottini

Gloor

et al. 2022

Sci Rep

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Symbiotic microbes can affect host behavior and fitness. Gut microbiota have received the most study, with less attention to other important microbial communities like those of scent-producing glands such as mammalian anal glands and the avian uropygial gland. However, mounting evidence suggests that microbes inhabiting scent-producing glands play an important role in animal behavior by contributing to variation in chemical signals. Free-living and captive conditions typically differ in social environment, food diversity and availability, disease exposure, and other factors—all of which can translate into differences in gut microbiota. However, whether extrinsic factors such as captivity alter microbial communities in scent glands remains an open question. We compared the uropygial gland microbiota of free-living and captive song sparrows (Melospiza melodia) and tested for an effect of dietary manipulations on the gland microbiota of captive birds. As predicted, the uropygial gland microbiota was significantly different between free-living and captive birds. Surprisingly, microbial diversity was higher in captive than free-living birds, and we found no effect of dietary treatments on captive bird microbiota. Identifying the specific factors responsible for microbial differences among groups and determining whether changes in symbiotic microbiota alter behavior and fitness are important next steps in this field.

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