RT journal article
T1 Winged resistance: Storks and gulls increase carriage of antibiotic resistance by shifting from paddy fields to landfills
A1 Sacristán-Soriano, Oriol
A1 Jarma, Dayana Ayelen
A1 Sanchez ordoñez
A1 Romero, Noelia
A1 Alonso, Esteban
A1 Green, Andy J.
A1 Sánchez-Melsió, Alexandre
A1 Hortas Rodríguez-Pascual, Francisco
A1 Balcázar, José Luis
A1 Peralta-Sánchez, Juan Manuel
A1 Borrego, Carles M.
A1 Sánchez Ordoñez, Marta Isabel
A2 Biología
K1 antibiotic resistance
K1 ciconia ciconia
K1 faecal bacterial community
K1 habitat use
K1 larus fuscus
K1 waterbird trophic ecology
AB Waterbirds are vectors for the dissemination of antimicrobial resistance across environments, with some species increasingly reliant on highly anthropized habitats for feeding. However, data on the impact of their feeding habits on the carriage of antibiotic resistance genes (ARGs) are still scarce. To fill this gap, we examined the microbiota (16S rRNA amplicon gene sequencing) and the prevalence of ARG (high-throughput qPCR of 47 genes) in faeces from white storks (Ciconia ciconia) and lesser black-backed gulls (Larus fuscus) feeding in highly (landfill) and less (paddy fields) polluted habitats. Faecal bacterial richness and diversity were higher in gulls feeding upon landfills and showed a greater abundance of potential pathogens, such as Staphylococcus. In contrast, faecal bacterial communities from storks were similar regardless of habitat preferences, maybe due to a less intense habitat use compared to gulls. In addition, birds feeding in the landfill carried a higher burden of ARGs compared to the surrounding soil and surface waters. Network analysis revealed strong correlations between ARGs and potential pathogens, particularly between tetM (resistance to tetracyclines), blaCMY (beta-lactam resistance), sul1 (sulfonamide resistance) and members of the genera Streptococcus, Peptostreptococcus, and Peptoclostridium. Our work demonstrates how transitioning from paddy fields to landfills fosters the carriage of ARGs and potential pathogens in the bird gut, shedding light on the ecological role of these avian vectors in antimicrobial resistance dissemination.
PB Elsevier
SN 1879-1026
YR 2024
FD 2024
LK http://hdl.handle.net/10498/32715
UL http://hdl.handle.net/10498/32715
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 22-sep-2026