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Wyświetlanie 1-10 z 16
Tytuł:
Nestbox use is linked to increased paternity loss in infected blue tits, but not great tits
Autorzy:
Dubiec, Anna
Sudyka, Joanna
Di Lecce, Irene
Szulkin, Marta
Opis:
Host-parasite interactions and reproductive strategies are critical aspects of avian life history, yet knowledge of their interplay in the context of nesting site microhabitat, in particular between natural and artificial nesting sites, is lacking. The choice of nesting site is critical for successful breeding, by ensuring protection from predators and a suitable environment for incubation and chick development. Furthermore, an optimal nesting site could mitigate the adverse effects of infection and other stressors on the resulting mating success and fitness of breeding birds. In this study, we investigated the prevalence of haemosporidian parasites and their relationship with paternity loss in blue tits (Cyanistes caeruleus) and great tits (Parus major) breeding in natural cavities and nestboxes. High parasite prevalence was observed in both species, with 72% of blue tits and 67% of great tits infected, mostly with Plasmodium spp. In blue tits, paternity loss by a social father, defined as the proportion of extra-pair offspring per nest, was influenced by an interaction between infection status and cavity type. Infected blue tit males breeding in nestboxes experienced higher paternity loss compared to those in natural cavities, suggesting that properties of nesting sites might alleviate or exacerbate the negative effects of infection on mating success. This effect was species-specific, as it was not observed in great tits. These results highlight how microhabitat, individual health, and reproductive strategies interact, and showcase the potential evolutionary implications of breeding in nesting sites provided by humans.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Gut microbiome variation in juvenile blue tits in a European urban mosaic
Autorzy:
Jünemann, Sebastian
Fus, Lena
Szulkin, Marta
Sudyka, Joanna
Maraci, Öncü
Di Lecce, Irene
Opis:
Urbanisation transforms natural environments, impacting not only wild animals living in cities but also the microorganisms they are hosting. To better understand urban-driven variation in microbiological composition and diversity in the gut of birds developing in urban areas, we collected faecal samples from blue tit Cyanistes caeruleus nestlings using nestboxes distributed across the capital city of Warsaw, Poland. Sampling included a variety of urban habitats, a suburban village and a natural forest area. Microbiome analysis revealed a pattern of reduced alpha diversity and significant shifts in beta diversity in urbanised settings, driven by impervious surface coverage. Additionally, we observed that this effect was year-dependent, therefore highlighting the importance of temporal replication in ecological research. Furthermore, comparing two cavity types (natural and human-made), we demonstrated that artificial nestboxes, a tool widely used in field ecology, can impact the microbiome assembly in nestlings.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Wyświetlanie 1-10 z 16

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