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Long-tailed pygmy rice rats modify their behavioural response and faecal corticosterone metabolites in response to culpeo fox but not to lesser grison

Author
Hernandez González, María del Carmen; Rubio, André V.; Barja Núñez, Isabeluntranslated
Entity
UAM. Departamento de Biología
Publisher
MDPI
Date
2021-10-22
Citation
10.3390/ani11113036
Animals 11.11 (2021): 3036
 
 
 
ISSN
2076-2615
DOI
10.3390/ani11113036
Editor's Version
https://doi.org/10.3390/ani11113036
Subjects
Animal Experiment; Enzyme Immunoassay; Feces Analysis; Female; Fox; Male; Nonhuman; Oligoryzomys; Physiological Stress; Predation Risk; Predator; Rattus Rattus; Risk Assessment; Seasonal Variation; Biología y Biomedicina / Biología
URI
http://hdl.handle.net/10486/704309
Rights
© 2021 The Authors

Licencia Creative Commons
Esta obra está bajo una Licencia Creative Commons Atribución 4.0 Internacional.

Abstract

Even though behavioural and physiological reactions to predation risk exhibited by prey species have received considerable attention in scientific journals, there are still many questions still unsolved. Our aim was to broaden the knowledge on one specific question: do long-tailed pygmy rice rats adapt their behavioural and physiological antipredator strategies depending on the predator species? For this question, we live-trapped in a temperate forest in Southern Chile long-tailed pygmy rice rats (Oligoryzomys longicaudatus), which were exposed to three predator odour phases (Phase 0: preliminary, no predator cues; Phase 1: one plot with culpeo fox faeces (Lycalopex culpaeus), one plot with lesser grison (Galictis cuja) faeces and one plot acting as a control with no odour; Phase 2: post treatment, no predator cues). We measured the behavioural response by the capture ratio. To assess the physiological stress response, we collected fresh faecal samples to quantify faecal corticosterone metabolites (FCM). Our results showed that O. longicaudatus increased both the capture ratio and FCM levels in the presence of culpeo cues. Culpeo foxes have higher densities in the study area than G. cuja and exhibit a higher activity pattern overlap with O. longicaudatus. Moreover, it has been also been reported in other regions that L. culpaeus consumption of O. longicaudatus is more frequent compared to G. cuja diet. The increase in capturability could be because traps can be regarded as a shelter in high-risk settings, but it can also be explained by the predator inspection behaviour. The increase in FCM concentrations during culpeo treatment can be linked to the adaptive mobilisation of energy to execute antipredator responses to increase survival chances
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  • Producción científica en acceso abierto de la UAM [16576]

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All the documents from Biblos-e Archivo are protected by copyrights. Some rights reserved.
Universidad Autónoma de Madrid. Biblioteca
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