scholarly journals Second generation anticoagulant rodenticides in predatory birds: Probabilistic characterisation of toxic liver concentrations and implications for predatory bird populations in Canada

2011 ◽  
Vol 37 (5) ◽  
pp. 914-920 ◽  
Author(s):  
Philippe J. Thomas ◽  
Pierre Mineau ◽  
Richard F. Shore ◽  
Louise Champoux ◽  
Pamela A. Martin ◽  
...  
Keyword(s):  
Second Generation ◽  
Bird Populations ◽  
Predatory Bird ◽  
Anticoagulant Rodenticides ◽  
Predatory Birds

scholarly journals Can predatory bird feathers be used as a non-destructive biomonitoring tool of organic pollutants?

2006 ◽  
Vol 2 (2) ◽  
pp. 283-285 ◽  
Author(s):  
Veerle L.B Jaspers ◽  
Stefan Voorspoels ◽  
Adrian Covaci ◽  
Marcel Eens
Keyword(s):  
Organic Pollutants ◽  
Polybrominated Diphenyl Ethers ◽  
Tail Feather ◽  
Predatory Bird ◽  
Buteo Buteo ◽  
Diphenyl Ethers ◽  
Different Types ◽  
Biomonitoring Tool ◽  
Predatory Birds ◽  
Non Destructive

The monitoring of different types of pollutants that are released into the environment and that present risks for both humans and wildlife has become increasingly important. In this study, we examined whether feathers of predatory birds can be used as a non-destructive biomonitor of organic pollutants. We demonstrate that polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane (DDT) and polybrominated diphenyl ethers (PBDEs) are measurable in one single tail feather of common buzzards ( Buteo buteo ) and that levels in this feather and internal tissues are significantly related to each other (0.35< r <0.76 for all 43 buzzards; 0.46< r <0.84 when excluding 17 starved birds). Our findings provide the first indication that feathers of predatory birds could be useful in non-destructive biomonitoring of organic pollutants, although further validation may be necessary.

Escape distance and escape latency following simulated rapid bird attacks in an Andean lizard, Phymaturus williamsi

Behaviour ◽  
2018 ◽  
Vol 155 (10-12) ◽  
pp. 861-881 ◽  
Author(s):  
Gustavo A. Fava ◽  
Juan C. Acosta
Keyword(s):  
Functional Relationship ◽  
Escape Latency ◽  
Lizard Species ◽  
Predatory Bird ◽  
Antipredatory Behaviour ◽  
Predatory Birds

Abstract Predatory birds represent the greatest risk for many lizard species. However, little is known about the functional relationship between the escape distance and escape latency of lizards during a rapid bird attack. We hypothesised that escape latency and distance in the Andean lizard species Phymaturus williamsi would increase proportionally, but vary according to the means of escape. Over a three-year period we observed seven types of antipredatory behaviour in 98% P. williamsi lizards on simulated predatory bird attacks. Escape distance and latency were positively correlated. 65% of lizards emerged from their refuge within 2 min of an attack. All of these behaviours were positively correlated with escape latency and distance, although we found the former to be more precise. This study contributes to a better understanding of the general antipredatory behaviour in this species of Andean lizard, and will assist in future decisions concerning its conservation.

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

Ecotoxicology ◽  
2021 ◽  
Vol 30 (4) ◽  
pp. 560-574
Author(s):  
Staffan Roos ◽  
Steve T. Campbell ◽  
Gill Hartley ◽  
Richard F. Shore ◽  
Lee A. Walker ◽  
...  
Keyword(s):  
Land Cover ◽  
Second Generation ◽  
Population Declines ◽  
Falco Tinnunculus ◽  
Negatively Associated ◽  
Land Cover Types ◽  
Anticoagulant Rodenticides ◽  
Potential Population ◽  
The Uk ◽  
Rats And Mice

AbstractRats 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, primarilyarable cerealsandbroad-leaved woodland, and negatively associated with mainlymean 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.

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