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View article: Experimental anthropogenic food restrictions drive short-term foraging and immuno-haematological changes in sympatric breeding gulls
Experimental anthropogenic food restrictions drive short-term foraging and immuno-haematological changes in sympatric breeding gulls Open
Fishery discards and landfills provide major subsidies to scavenging seabirds, shaping their foraging behaviour and population dynamics. However, few studies have compared the behaviour and health of individuals with and without access to …
View article: Variación geográfica en el parasitismo por garrapatas e impacto en la fisiología inmune de la lagartija Psammodromus algirus a lo largo de su rango de distribución
Variación geográfica en el parasitismo por garrapatas e impacto en la fisiología inmune de la lagartija Psammodromus algirus a lo largo de su rango de distribución Open
Haematophagous ectoparasites draw resources from their hosts, reducing host body condition and altering haematology and immune physiology. The tick Ixodes ricinus is a hard tick whose immature stages can infest the lizard host Psammodromus…
View article: Drivers and consequences of nest ectoparasite pressure in tit nestlings
Drivers and consequences of nest ectoparasite pressure in tit nestlings Open
Ectoparasites impose significant costs to their hosts and modulate their life-history traits. We evaluated the prevalence and abundance of louse flies, blowflies, fleas and mites in great tits (Parus major) and blue tits (Cyanistes caerule…
View article: From mudflats and saltpans to Open Sea: Plastic ingestion and PBDE/MeO-BDE accumulation in Waterbirds from southern Portugal
From mudflats and saltpans to Open Sea: Plastic ingestion and PBDE/MeO-BDE accumulation in Waterbirds from southern Portugal Open
Plastic ingestion greatly affects waterbirds, causing lacerations and potentially leading to health disruptions from chemical leaching. Polybrominated diphenyl ethers (PBDEs), used as flame retardants in plastics, remain persistent in the …
View article: Effects of experimental nest treatment with herbs on ectoparasites and body condition of nestlings
Effects of experimental nest treatment with herbs on ectoparasites and body condition of nestlings Open
Nest fumigation behavior involves the incorporation of fresh green plant fragments that contain ectoparasite-repellent volatile compounds into birds’ nests. This behavior is relatively rare among bird species, and there is ongoing debate a…
View article: Molecular investigation of tick-borne pathogens from different regions of Morocco
Molecular investigation of tick-borne pathogens from different regions of Morocco Open
Tick-borne pathogens are a worldwide threat to public health that can only be mitigated by knowledge on tick-host associations coupled with surveillance of their infection by pathogenic microorganisms. This information is not equally avail…
View article: Plastic use as nesting material can alter incubation temperature and behaviour but does not affect yellow-legged gull chicks
Plastic use as nesting material can alter incubation temperature and behaviour but does not affect yellow-legged gull chicks Open
Optimal incubation temperature is crucial for embryos' development and survival. With the increasing use of plastics in gulls' nests, it is essential to understand how their incorporation affects incubation temperature, parental behaviour,…
View article: Natural selection and recombination at host-interacting lipoprotein loci drive genome diversification of Lyme disease and related bacteria
Natural selection and recombination at host-interacting lipoprotein loci drive genome diversification of Lyme disease and related bacteria Open
Lyme disease, caused by spirochetes in the Borrelia burgdorferi sensu lato clade within the Borrelia genus, is transmitted by Ixodes ticks and is currently the most prevalent and rapidly expanding tick-borne disease in Europe and North Ame…
View article: Physiology and fertility of two gull species in relation to plastic additives' exposure
Physiology and fertility of two gull species in relation to plastic additives' exposure Open
Understanding the impact of plastic and its additives on wild species is crucial as their presence in the environment increases. Polybrominated diphenyl ethers (PBDEs), once used as flame retardants, were restricted due to known toxic effe…
View article: The great tit HapMap project: A continental‐scale analysis of genomic variation in a songbird
The great tit HapMap project: A continental‐scale analysis of genomic variation in a songbird Open
A major aim of evolutionary biology is to understand why patterns of genomic diversity vary within taxa and space. Large‐scale genomic studies of widespread species are useful for studying how environment and demography shape patterns of g…
View article: Begging calls and mouth colouration as predictors of breeding success in blue tits
Begging calls and mouth colouration as predictors of breeding success in blue tits Open
Nestlings normally exhibit a mix of traits that attract parental care, such as postural and vocal begging and carotenoid‐based mouth colouration. These signals are hypothesised to be signs of nestling needs (vocal begging) and quality (mou…
View article: Dynamics and effects of plastic contaminants’ assimilation in gulls
Dynamics and effects of plastic contaminants’ assimilation in gulls Open
Background: Opportunistic animals such as gulls are often associated with anthropogenic activities [1,2], and therefore highly susceptible to plastic ingestion and stomach chemical leaching [3]. Yet, such chemical process is still poorly s…
View article: Variation in the use of anthropogenic materials in tit nests: influence of human activities and pandemic restrictions
Variation in the use of anthropogenic materials in tit nests: influence of human activities and pandemic restrictions Open
As urbanization expands, so does the presence of anthropogenic materials within bird’s nests. However, our understanding of this phenomenon remains limited, particularly in terrestrial birds. This study describes and compares the use of an…
View article: Prevalence of asymptomatic Leishmania infection and knowledge, perceptions, and practices in blood donors in mainland Portugal
Prevalence of asymptomatic Leishmania infection and knowledge, perceptions, and practices in blood donors in mainland Portugal Open
Background Asymptomatic infection is the most common outcome of exposure to Leishmania parasites. In the Mediterranean region, where Leishmania infantum is endemic, studies on the prevalence of asymptomatic infection have often relied on s…
View article: Is there a role for aromatic plants in blue tit (Cyanistes caeruleus) nests? Results from a correlational and an experimental study
Is there a role for aromatic plants in blue tit (Cyanistes caeruleus) nests? Results from a correlational and an experimental study Open
The utility of fresh green material in avian nests is still not fully understood. Potential explanations include the effects of plants’ volatile compounds on parasite reduction (nest protection hypothesis) or direct beneficial effects on n…
View article: Omega-3 enriched chick diet reduces the foraging areas of breeders in two closely related shearwaters from contrasting marine environments
Omega-3 enriched chick diet reduces the foraging areas of breeders in two closely related shearwaters from contrasting marine environments Open
Seabirds have evolved several life-history characteristics to help buffer environmental stochasticity. However, particularly during the breeding season, seabirds may be affected by reductions in prey availability and localised oceanographi…
View article: Presence of Nasonia wasps and the bacterium Arsenophonus nasoniae in calliphorid fly pupae collected from great tit nests in Coimbra, Portugal.
Presence of Nasonia wasps and the bacterium Arsenophonus nasoniae in calliphorid fly pupae collected from great tit nests in Coimbra, Portugal. Open
During the breeding season of 2021, we sampled pupae from great tit nests at Mata Nacional do Choupal (40º13’N, 8º27’W), a mixed woodland on the periphery of the city of Coimbra, Portugal (more details of the study area in (Norte et al., 2…
View article: Tripartite networks show that keystone species can multitask
Tripartite networks show that keystone species can multitask Open
Keystone species are disproportionately important for ecosystem functioning. While all species engage in multiple interaction types with other species, keystone species importance is often defined based on a single dimension of their Elton…
View article: The Population Structure of Borrelia lusitaniae Is Reflected by a Population Division of Its Ixodes Vector
The Population Structure of Borrelia lusitaniae Is Reflected by a Population Division of Its Ixodes Vector Open
Populations of vector-borne pathogens are shaped by the distribution and movement of vector and reservoir hosts. To study what impact host and vector association have on tick-borne pathogens, we investigated the population structure of Bor…
View article: Tripartite networks show that keystone species can multitask
Tripartite networks show that keystone species can multitask Open
Keystone species are disproportionately important for ecosystem functioning (1,2). However, while all species engage in multiple interaction types with other species, the importance of keystone species is often defined based on a single di…
View article: Connecting the data landscape of long‐term ecological studies: The SPI‐Birds data hub
Connecting the data landscape of long‐term ecological studies: The SPI‐Birds data hub Open
The integration and synthesis of the data in different areas of science is drastically slowed and hindered by a lack of standards and networking programmes. Long‐term studies of individually marked animals are not an exception. These studi…
View article: Interaction of climate change with effects of conspecific and heterospecific density on reproduction
Interaction of climate change with effects of conspecific and heterospecific density on reproduction Open
We studied the relationship between temperature and the coexistence of great tit Parus major and blue tit Cyanistes caeruleus , breeding in 75 study plots across Europe and North Africa. We expected an advance in laying date and a reductio…
View article: Mercury levels in commercial mid-trophic level fishes along the Portuguese coast – Relationships with trophic niche and oxidative damage
Mercury levels in commercial mid-trophic level fishes along the Portuguese coast – Relationships with trophic niche and oxidative damage Open
Sardines (Sardina pilchardus) and mackerels (Scomber spp. and Trachurus spp.) are amongst the most common fish caught along the Iberian coast for human consumption and, as mid-trophic level organisms, they constitute essential prey in the …
View article: Host dispersal shapes the population structure of a tick‐borne bacterial pathogen
Host dispersal shapes the population structure of a tick‐borne bacterial pathogen Open
Birds are hosts for several zoonotic pathogens. Because of their high mobility, especially of longdistance migrants, birds can disperse these pathogens, affecting their distribution and phylogeography. We focused on Borrelia burgdorferi se…