Home About Browse Search
Svenska


Annual abundance of common Kestrels (Falco tinnunculus) is negatively associated with second generation anticoagulant rodenticides

Roos, Staffan and Campbell, Steve T. and Hartley, Gill and Shore, Richard F. and Walker, Lee A. and Wilson, Jeremy D. (2021). Annual abundance of common Kestrels (Falco tinnunculus) is negatively associated with second generation anticoagulant rodenticides. Ecotoxicology. 30 , 560-574
[Research article]

[img] PDF
1MB

Abstract

Rats and mice can damage food and agricultural products as well as transmit diseases, thereby requiring control of their numbers. Application of Second Generation Anticoagulant Rodenticides (SGARs) often reduces rodent numbers locally. However, predators eating rodents, including non-target species, that have consumed SGARs may be secondarily exposed and potentially lethally poisoned. Here we study whether SGARs may have contributed to the widespread population declines of a rodent-eating raptor, the Common Kestrel (Falco tinnunculus) in the UK. We show that 161 (66.8%) of the 241 Kestrels submitted for ecotoxicology tests between 1997 and 2012 had detectable levels of at least one SGAR in their livers. Adult Kestrels had significantly higher prevalence of SGARs than juveniles, suggesting accumulation of SGARs through time. The prevalence and concentrations of individual SGARs in Kestrels were significantly higher in England than in Scotland. SGAR prevalence in Kestrels were positively associated with some land cover types, primarily arable cereals and broad-leaved woodland, and negatively associated with mainly mean elevation, probably reflecting variation in SGAR usage across land cover types. By using volunteer-collected data on national Kestrel abundance 1997-2012, we show that there is a negative correlation between the Kestrel population index in a specific year and the concentration of bromadialone as well as the total SGAR concentration in the same year. Although correlative, this is the first study to provide evidence for a potential population-limiting effect of SGARs on a raptor.

Authors/Creators:Roos, Staffan and Campbell, Steve T. and Hartley, Gill and Shore, Richard F. and Walker, Lee A. and Wilson, Jeremy D.
Title:Annual abundance of common Kestrels (Falco tinnunculus) is negatively associated with second generation anticoagulant rodenticides
Series Name/Journal:Ecotoxicology
Year of publishing :2021
Volume:30
Page range:560-574
Number of Pages:15
Publisher:SPRINGER
ISSN:0963-9292
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:SGAR, Raptors, Poisoning, Sub-lethal effects, Birds of prey, Breeding Bird Survey
URN:NBN:urn:nbn:se:slu:epsilon-p-111485
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111485
Additional ID:
Type of IDID
DOI10.1007/s10646-021-02374-w
Web of Science (WoS)000633268400003
ID Code:23331
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Swedish Species Information Centre
Deposited By: SLUpub Connector
Deposited On:22 Apr 2021 16:23
Metadata Last Modified:22 Apr 2021 16:31

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits