Detrimental effects of urbanization on the diet, health, and signal coloration of an ecologically successful alien bird

Peneaux, Chloe; Grainger, Richard; Lermite, Françoise; Machovsky‐Capuska, Gabriel E.; Gaston, Troy F.; Griffin, Andrea S.

doi:10.1016/j.scitotenv.2021.148828

Cited by 10 publications

(5 citation statements)

References 107 publications

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“…Similar effects have been reported in multiple studies on urban birds including great tits, house finches (Haemorhous mexicanus) and Indian mynas (Acridotheres tristis) (e.g. Giraudeau et al, 2015b;Grunst et al, 2020a;Hõrak et al, 2001;Isaksson et al, 2005;Peneaux et al, 2021a). In urban settings, reductions in plumage carotenoid-based colouration may be more due to lower food quality than its reduced availability.…”

Section: ) Colour-producing Mechanismssupporting

confidence: 75%

“…Similar effects have been reported in multiple studies on urban birds including great tits, house finches ( Haemorhous mexicanus ) and Indian mynas ( Acridotheres tristis ) (e.g. Giraudeau et al ., 2015 b ; Grunst et al ., 2020 a ; Hõrak et al ., 2001; Isaksson et al ., 2005; Peneaux et al ., 2021 a ).…”

Section: Discussionmentioning

confidence: 99%

“…Lifshitz & St Clair (2016) summarised current knowledge on colour ornaments as potential bioindicators, and Peneaux et al . (2021 a ) considered the effects of pollutants on carotenoid‐based colouration and provided guidelines for the use of colour signals as bioindicators. Marasco & Costantini (2016) discussed oxidative stress as a potential proximate mechanism linking the quality of animal colour displays with anthropogenic pollutants, Koch et al .…”

Section: Introductionmentioning

confidence: 99%

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Avian colouration in a polluted world: a meta‐analysis

Janas,

Gudowska,

Drobniak

2024

Biological Reviews

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Brilliant, diverse colour ornaments of birds were one of the crucial cues that led Darwin to the idea of sexual selection. Although avian colouration plays many functions, including concealment, thermoregulation, or advertisement as a distasteful prey, a quality‐signalling role in sexual selection has attracted most research attention. Sexually selected ornaments are thought to be more susceptible to external stressors than naturally selected traits, and as such, they might be used as a test for environmental quality. For this reason, the last two decades have seen numerous studies on the impact of anthropogenic pollution on the expression of various avian colour traits. Herein, we provide the first meta‐analytical summary of these results and examine whether there is an interaction between the mechanism of colour production (carotenoid‐based, melanin‐based and structural) and the type of anthropogenic factor (categorised as heavy metals, persistent organic pollutants, urbanisation, or other). Following the assumption of heightened condition dependence of ornaments under sexual selection, we also expected the magnitude of effect sizes to be higher in males. The overall effect size was close to significance and negative, supporting a general detrimental impact of anthropogenic pollutants on avian colouration. In contrast to expectations, there was no interaction between pollution types and colour‐producing mechanisms. Yet there were significant differences in sensitivity between colour‐producing mechanisms, with carotenoid‐based colouration being the most affected by anthropogenic environmental disturbances. Moreover, we observed no significant tendency towards heightened sensitivity in males. We identified a publication gap on structural colouration, which, compared to pigment‐based colouration, remains markedly understudied and should thus be prioritised in future research. Finally, we call for the unification of methods used in colour quantification in ecological research to ensure comparability of results among studies.

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Section: ) Colour-producing Mechanismssupporting

confidence: 75%

“…Similar effects have been reported in multiple studies on urban birds including great tits, house finches ( Haemorhous mexicanus ) and Indian mynas ( Acridotheres tristis ) (e.g. Giraudeau et al ., 2015 b ; Grunst et al ., 2020 a ; Hõrak et al ., 2001; Isaksson et al ., 2005; Peneaux et al ., 2021 a ).…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Avian colouration in a polluted world: a meta‐analysis

Janas,

Gudowska,

Drobniak

2024

Biological Reviews

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“…Higher complement activity in agricultural and urban areas could be because of increased or altered parasite communities, such as the avian pox virus, in areas associated with higher rates of human disturbance (Minias 2023). For example, in the Common Myna (Acridotheres tristis), higher levels of urbanization are associated with stronger immune responses and higher ectoparasite loads (Peneaux et al 2021).…”

Section: Discussionmentioning

confidence: 99%

Influence of human activity on gut microbiota and immune responses of Darwin’s finches in the Galápagos Islands

Bygrave,

Love,

Zylberberg

et al. 2024

ACE

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Urbanization can influence many environmental factors that can affect the condition, immunity, and gut microbiota of birds. Over the past several decades, the Galápagos Islands of Ecuador have experienced increasing human activity, which has led to recent changes in the morphology, gut microbiota, and immunity of Darwin's finches. However, these traits have not been characterized before the exponential growth of human population size and tourist visitation rates, i.e., before 2009. The goal of this study was to determine the effect of land use on the fecal microbiota, immune response, and body measurements of Darwin's finches in 2008, at a time of rapidly increasing human activity on the islands. Specifically, we compared fecal microbiota (bacterial diversity, community structure and membership, and relative abundance of bacterial taxa), proxies of immunity (lysozyme activity and haptoglobin, complement antibody, and natural antibody levels), and body measurements (body mass and condition, tarsus length) across undeveloped, agricultural, and urban areas for medium ground finches (Geospiza fortis) and small ground finches (G. fuliginosa). Lysozyme activity was lower and observed bacterial species richness was higher in urban areas compared to non-urban areas across both finch species. In medium ground finches, four genera (Methylobacterium-Methylorubrum, Escherichia-Shigella, Brucella, and Citrobacter spp.) were higher in urban areas compared to undeveloped areas. In small ground finches, Paucibacter, Achromobacter, Delftia, Stenotrophomonas, and Brucella spp. had higher relative abundances in undeveloped and agricultural areas whereas the genus Cutibacterium was more abundant in finches from urban and agricultural areas than in finches from undeveloped areas. Medium ground finches were smaller in undeveloped areas compared to the other two areas, but body mass of small ground finches did not differ across areas. Our results suggest that human activity can have an impact on immune measures and gut microbiota of Darwin's finches. Influence de l'activité humaine sur le microbiote intestinal et la réponse immunitaire des géospizes de Darwin dans les îles GalápagosRÉSUMÉ. L'aménagement du territoire peut influer sur de nombreux facteurs environnementaux susceptibles d'affecter la condition, l'immunité et le microbiote intestinal des oiseaux. Au cours des dernières décennies, les îles Galápagos, en Équateur, ont subi une hausse de l'activité humaine, ce qui a entraîné des changements récents dans la morphologie, le microbiote intestinal et l'immunité des géospizes de Darwin. Cependant, ces traits n'ont pas été caractérisés avant la croissance exponentielle de la population humaine et du taux de fréquentation touristique, c'est-à-dire avant 2009. L'objectif de cette étude était de déterminer l'effet de l'occupation des terres sur le microbiote fécal, la réponse immunitaire et les mesures corporelles des géospizes de Darwin en 2008, moment où l'activité humaine augmentait rapidement sur les îles. Plus précisément, nous a...

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“…On the territory of cities, the species richness of birds decreases sharply in comparison with natural habitats. It is also characterized by a significant increase in quantitative indicators and the dominance of a limited number of species (Peneaux et al, 2021;Wood & Esaian, 2020). In urban areas, wildlife often encounters new, potentially stressful situations, such as changes in food resources, interactions with new species, increased human pressure and exposure to pollutants (Iglesias-Carrasco, 2020).…”

Section: Introductionmentioning

confidence: 99%

Winter avifauna habitat types of urban agglomerations: comparison by qualitative and quantitative indicators

Zhulenko,

Drekalo

2023

Biol. Stud.

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Background. The winter avifauna of urban agglomerations is a rather dynamic object of research, whose indicators differ across cities and years of observation. Depending on the species characteristics and the level of anthropogenization, birds in the territory of cities choose different types of habitats, which also requires analysis. Materials and Methods. Research on the species composition of wintering birds on the territories of Zhydachiv and Lviv urban agglomerations was carried out in winter periods of 2020–2023 by means of field trips using the method of point records (Bibby et al., 2000). In order to count small species of Passeriformes accurately, a slightly modified version of this method was used. In this case, observations were carried out in a double radius. Birds were recorded separately in R1 – up to 25 m and R2 – from 25 to 50 m. The optimal time for counting at one point is 8–10 minutes. The counting area corresponds to a circle with a known radius. Research was carried out mainly in morning hours – from 8:00 to 11:00 in the case of absence of heavy precipitation, fog or strong wind. Results and Discussion. After comparing the winter avifauna of urban agglomerations of the regional (Lviv) and district (Zhydachiv) levels, which differ in the level of environmental transformation, we established certain differences. A total of 48 species of wintering birds have been recorded, of which the Сommon Goldeneye (Bucephala clangula) and the Ural Owl (Strix uralensis) are protected by the Red Data Book of Ukraine. Conclusion. For each of the agglomerations, dominant species of birds have been determined. Admittedly, birds in the territory of cities seek to occupy a territory with conditions most similar to the natural environment. Additionally, we attempted to understand the patterns of distribution of wintering species in the study area and the reasons for such placement.

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Detrimental effects of urbanization on the diet, health, and signal coloration of an ecologically successful alien bird

Cited by 10 publications

References 107 publications

Avian colouration in a polluted world: a meta‐analysis

Avian colouration in a polluted world: a meta‐analysis

Influence of human activity on gut microbiota and immune responses of Darwin’s finches in the Galápagos Islands

Winter avifauna habitat types of urban agglomerations: comparison by qualitative and quantitative indicators

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