Long-Tailed Pygmy Rice Rats Modify Their Behavioural Response and Faecal Corticosterone Metabolites in Response to Culpeo Fox but Not to Lesser Grison

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 ad...

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Autores principales:	María del Carmen Hernández, André V. Rubio, Isabel Barja
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	predator cues predation risk <i>Oligoryzomys longicaudatus</i> <i>Lycalopex culpaeus</i> <i>Galictis cuja</i> glucocorticoids Veterinary medicine SF600-1100 Zoology QL1-991
Acceso en línea:	https://doaj.org/article/610074e679d24ee79399e1473d07fb6a
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spelling	oai:doaj.org-article:610074e679d24ee79399e1473d07fb6a2021-11-25T16:13:58ZLong-Tailed Pygmy Rice Rats Modify Their Behavioural Response and Faecal Corticosterone Metabolites in Response to Culpeo Fox but Not to Lesser Grison10.3390/ani111130362076-2615https://doaj.org/article/610074e679d24ee79399e1473d07fb6a2021-10-01T00:00:00Zhttps://www.mdpi.com/2076-2615/11/11/3036https://doaj.org/toc/2076-2615Even 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 (<i>Oligoryzomys longicaudatus</i>), which were exposed to three predator odour phases (Phase 0: preliminary, no predator cues; Phase 1: one plot with culpeo fox faeces (<i>Lycalopex culpaeus</i>), one plot with lesser grison (<i>Galictis cuja</i>) 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 <i>O. longicaudatus</i> increased both the capture ratio and FCM levels in the presence of culpeo cues. Culpeo foxes have higher densities in the study area than <i>G. cuja</i> and exhibit a higher activity pattern overlap with <i>O. longicaudatus.</i> Moreover, it has been also been reported in other regions that <i>L. culpaeus</i> consumption of <i>O. longicaudatus</i> is more frequent compared to <i>G. cuja</i> 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.María del Carmen HernándezAndré V. RubioIsabel BarjaMDPI AGarticlepredator cuespredation risk<i>Oligoryzomys longicaudatus</i><i>Lycalopex culpaeus</i><i>Galictis cuja</i>glucocorticoidsVeterinary medicineSF600-1100ZoologyQL1-991ENAnimals, Vol 11, Iss 3036, p 3036 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	predator cues predation risk <i>Oligoryzomys longicaudatus</i> <i>Lycalopex culpaeus</i> <i>Galictis cuja</i> glucocorticoids Veterinary medicine SF600-1100 Zoology QL1-991
spellingShingle	predator cues predation risk <i>Oligoryzomys longicaudatus</i> <i>Lycalopex culpaeus</i> <i>Galictis cuja</i> glucocorticoids Veterinary medicine SF600-1100 Zoology QL1-991 María del Carmen Hernández André V. Rubio Isabel Barja Long-Tailed Pygmy Rice Rats Modify Their Behavioural Response and Faecal Corticosterone Metabolites in Response to Culpeo Fox but Not to Lesser Grison
description	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 (<i>Oligoryzomys longicaudatus</i>), which were exposed to three predator odour phases (Phase 0: preliminary, no predator cues; Phase 1: one plot with culpeo fox faeces (<i>Lycalopex culpaeus</i>), one plot with lesser grison (<i>Galictis cuja</i>) 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 <i>O. longicaudatus</i> increased both the capture ratio and FCM levels in the presence of culpeo cues. Culpeo foxes have higher densities in the study area than <i>G. cuja</i> and exhibit a higher activity pattern overlap with <i>O. longicaudatus.</i> Moreover, it has been also been reported in other regions that <i>L. culpaeus</i> consumption of <i>O. longicaudatus</i> is more frequent compared to <i>G. cuja</i> 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.
format	article
author	María del Carmen Hernández André V. Rubio Isabel Barja
author_facet	María del Carmen Hernández André V. Rubio Isabel Barja
author_sort	María del Carmen Hernández
title	Long-Tailed Pygmy Rice Rats Modify Their Behavioural Response and Faecal Corticosterone Metabolites in Response to Culpeo Fox but Not to Lesser Grison
title_short	Long-Tailed Pygmy Rice Rats Modify Their Behavioural Response and Faecal Corticosterone Metabolites in Response to Culpeo Fox but Not to Lesser Grison
title_full	Long-Tailed Pygmy Rice Rats Modify Their Behavioural Response and Faecal Corticosterone Metabolites in Response to Culpeo Fox but Not to Lesser Grison
title_fullStr	Long-Tailed Pygmy Rice Rats Modify Their Behavioural Response and Faecal Corticosterone Metabolites in Response to Culpeo Fox but Not to Lesser Grison
title_full_unstemmed	Long-Tailed Pygmy Rice Rats Modify Their Behavioural Response and Faecal Corticosterone Metabolites in Response to Culpeo Fox but Not to Lesser Grison
title_sort	long-tailed pygmy rice rats modify their behavioural response and faecal corticosterone metabolites in response to culpeo fox but not to lesser grison
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/610074e679d24ee79399e1473d07fb6a
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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

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