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Reduced ectoparasite load, body mass and blood haemolysis in Eurasian kestrels (Falco tinnunculus) along an urban–rural gradient

Wemer, Laura ; Hegemann, Arne LU ; Isaksson, Caroline LU orcid ; Nebel, Carina LU ; Kleindorfer, Sonia ; Gamauf, Anita ; Adrion, Marius and Sumasgutner, Petra LU (2021) In Science of Nature 108(5).
Abstract

Urbanisation is proceeding at an alarming rate which forces wildlife to either retreat from urban areas or cope with novel stressors linked to human presence and activities. For example, urban stressors like anthropogenic noise, artificial light at night and chemical pollution can have severe impacts on the physiology of wildlife (and humans), in particular the immune system and antioxidant defences. These physiological systems are important to combat and reduce the severity of parasitic infections, which are common among wild animals. One question that then arises is whether urban-dwelling animals, whose immune and antioxidant system are already challenged by the urban stressors, are more susceptible to parasitic infections. To assess... (More)

Urbanisation is proceeding at an alarming rate which forces wildlife to either retreat from urban areas or cope with novel stressors linked to human presence and activities. For example, urban stressors like anthropogenic noise, artificial light at night and chemical pollution can have severe impacts on the physiology of wildlife (and humans), in particular the immune system and antioxidant defences. These physiological systems are important to combat and reduce the severity of parasitic infections, which are common among wild animals. One question that then arises is whether urban-dwelling animals, whose immune and antioxidant system are already challenged by the urban stressors, are more susceptible to parasitic infections. To assess this, we studied nestlings of Eurasian kestrels (Falco tinnunculus) in Vienna, Austria, during 2015 and 2017. We measured biomarkers of innate immune function, oxidative stress and body mass index and ectoparasite infection intensity in 143 nestlings (from 56 nests) along an urban gradient. Nestlings in more urbanised areas had overall fewer ectoparasites, lower haemolysis (complement activity) and lower body mass index compared to nestlings in less urbanised areas. None of the other immune or oxidative stress markers were associated with the urban gradient. Despite some non-significant results, our data still suggest that kestrel nestlings experience some level of reduced physiological health, perhaps as a consequence of exposure to more urban stressors or altered prey availability in inner-city districts even though they had an overall lower ectoparasite burden in these heavily urbanised areas.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Body condition, Ectoparasite, Falconiformes, Glutathione, Haptoglobin, Oxidative stress
in
Science of Nature
volume
108
issue
5
article number
42
publisher
Springer
external identifiers
  • scopus:85114436423
  • pmid:34491450
ISSN
0028-1042
DOI
10.1007/s00114-021-01745-x
language
English
LU publication?
yes
id
9c18eb63-0802-4bc9-954c-de4d59eb707b
date added to LUP
2021-10-11 14:30:00
date last changed
2024-06-15 17:50:03
@article{9c18eb63-0802-4bc9-954c-de4d59eb707b,
  abstract     = {{<p>Urbanisation is proceeding at an alarming rate which forces wildlife to either retreat from urban areas or cope with novel stressors linked to human presence and activities. For example, urban stressors like anthropogenic noise, artificial light at night and chemical pollution can have severe impacts on the physiology of wildlife (and humans), in particular the immune system and antioxidant defences. These physiological systems are important to combat and reduce the severity of parasitic infections, which are common among wild animals. One question that then arises is whether urban-dwelling animals, whose immune and antioxidant system are already challenged by the urban stressors, are more susceptible to parasitic infections. To assess this, we studied nestlings of Eurasian kestrels (Falco tinnunculus) in Vienna, Austria, during 2015 and 2017. We measured biomarkers of innate immune function, oxidative stress and body mass index and ectoparasite infection intensity in 143 nestlings (from 56 nests) along an urban gradient. Nestlings in more urbanised areas had overall fewer ectoparasites, lower haemolysis (complement activity) and lower body mass index compared to nestlings in less urbanised areas. None of the other immune or oxidative stress markers were associated with the urban gradient. Despite some non-significant results, our data still suggest that kestrel nestlings experience some level of reduced physiological health, perhaps as a consequence of exposure to more urban stressors or altered prey availability in inner-city districts even though they had an overall lower ectoparasite burden in these heavily urbanised areas.</p>}},
  author       = {{Wemer, Laura and Hegemann, Arne and Isaksson, Caroline and Nebel, Carina and Kleindorfer, Sonia and Gamauf, Anita and Adrion, Marius and Sumasgutner, Petra}},
  issn         = {{0028-1042}},
  keywords     = {{Body condition; Ectoparasite; Falconiformes; Glutathione; Haptoglobin; Oxidative stress}},
  language     = {{eng}},
  number       = {{5}},
  publisher    = {{Springer}},
  series       = {{Science of Nature}},
  title        = {{Reduced ectoparasite load, body mass and blood haemolysis in Eurasian kestrels (Falco tinnunculus) along an urban–rural gradient}},
  url          = {{http://dx.doi.org/10.1007/s00114-021-01745-x}},
  doi          = {{10.1007/s00114-021-01745-x}},
  volume       = {{108}},
  year         = {{2021}},
}