Chronic stress and the introduction to captivity: How wild house sparrows (Passer domesticus) adjust to laboratory conditions

Fischer, Clare Parker; Wright-Lichter, Jessica; Romero, L. Michael

doi:10.1016/j.ygcen.2017.11.007

Cited by 44 publications

(37 citation statements)

References 37 publications

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“…This lack of change highlights that baseline Cort does not always change in a consistent manner in different species. This experiment was designed so that the initial 4‐day period of the protocol would be interpreted by the birds as potentially noxious and thus trigger physiological changes consistent with chronic stress, such as altered baseline Cort (Cyr et al, ; Fischer et al, ; Lattin & Romero, ; Love, Lovern, & DuRant, ; Rich & Romero, ). However, in this experiment, 4 days appeared to be too short to elicit changes in baseline Cort as birds were likely only on the cusp of experiencing symptoms of chronic stress.…”

Section: Discussionmentioning

confidence: 99%

“…Initial transference to a captive environment introduces many novel stimuli that can negatively affect the physiology and behavior of animals (Morgan & Tromborg, ). Studies have shown that Cort increases within the first week(s) of captivity in several avian species (Dickens et al, ; Fischer et al, ; Kuhlman & Martin, ; Lattin et al, ; Lattin, Pechenenko, & Carson, ; Love et al, ); captivity also alters other systems including immune function (Kuhlman & Martin, ; Love et al, ), behavior (Lattin et al, ), and reproduction (Dickens & Bentley, ). Random, repeated stressors and introduction to captivity are clearly both stressful, but these situations can lead to distinct responses.…”

Section: Discussionmentioning

confidence: 99%

“…Acclimation, or habituation, responses to these two types of chronic stress may also differ. For example, it has been shown that house sparrows acclimate to captivity over the first 2–3 weeks; this includes altering baseline Cort levels and components of the sympathetic nervous system (Fischer et al, ). When considering the results of this study in the broader context of stress physiology, it becomes increasingly clear that not all types of chronic stress are equal and thus do not elicit equivalent responses.…”

Section: Discussionmentioning

confidence: 99%

“…All birds were housed indoors in individual cages (45 x 37 x 33 cm), under a 12 hr light-12 hr dark cycle and were acclimated to captivity for at least 3 weeks before the start of any experimental procedures. This period of time has been shown to be appropriate for physiological acclimation (Fischer, Wright-Lichter, & Romero, 2018).…”

Section: Experimental Designmentioning

confidence: 99%

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House sparrows (Passer domesticus) adjusted hypothalamic‐pituitary‐adrenal axis negative feedback and perch hopping activities in response to a single repeated stimulus

Gormally

Romero

2018

J Exp Zool Pt A

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Chronic stress has been extensively studied in both laboratory and field settings; however, a conclusive and consistent phenotype has not been reached. Several studies have reported attenuation of the hypothalamic–pituitary–adrenal axis during experiments intended to cause chronic stress. We sought to determine whether this attenuation could be indicative of habituation. Importantly, we were not investigating habituation to a specific stimulus—as many stress physiology studies do—but rather we assessed how the underlying physiology and behavior changed in response to repeated stressor presentation. We exposed house sparrows (Passer domesticus) to a single stimulus twice per day at random times for 8 consecutive days. We predicted that this period of time would be long enough for the birds to determine that these acute stressors were not, in fact, dangerous and they would, therefore, acclimate. A second control group remained undisturbed for the same period of time. We measured baseline, stress‐induced, negative feedback strength, and maximum production of corticosterone as well as neophobic behavior before, during, and after this 8‐day experiment. When birds experienced a stimulus for 4 days, their negative feedback strength was significantly diminished, but recovered after the second 4 days. Additionally, perch hopping decreased and recovered in this same time frame. These data suggest that distinct physiological and behavioral responses arise when house sparrows are exposed to the same stressor for several consecutive days as opposed to many stressors layered on top of one another. Furthermore, they indicate that habituation—as with chronic stress—can appear differently depending on the metric being examined.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Experimental Designmentioning

confidence: 99%

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House sparrows (Passer domesticus) adjusted hypothalamic‐pituitary‐adrenal axis negative feedback and perch hopping activities in response to a single repeated stimulus

Gormally

Romero

2018

J Exp Zool Pt A

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“…However, captivity stress may chronically increase GC levels, which may reduce fitness through a suite of deleterious effects such as suppressing parental behavior, compromising reproductive success and promoting metabolic disorders (Dallman 1993;Wingfield et al 1995;Vegiopoulos and Herzig 2007). Some previous studies have demonstrated the effects of capture and captivity stress on the HPA axis and behavioral responses of free-living animals (Rich and Romero 2005;Cyr et al 2007Cyr et al , 2009Lattin et al 2012;Fischer et al 2018). To date, however, there has been little research on the dynamic changes of both plasma GCs and metabolites during the first hours, or days, free-living animals have spent in captivity (Angelier et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Effects of capture and captivity on plasma corticosterone and metabolite levels in breeding Eurasian Tree Sparrows

Zhu

Wang

et al. 2019

Avian Res

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Background: Bringing free-living animals into captivity subjects them to the stress of both capture and captivity, leading to the alteration of normal physiological processes and behaviors through activation of the hypothalamicpituitary-adrenal axis. In free-living birds, although elevated plasma corticosterone (CORT) is an important adaptation regulating physiological and behavioral responses during the process of capture and captivity stress, little information is currently available on the effects of such stress on plasma metabolite levels. Methods:We examined the effects of immediate capture and 24-h captivity on body mass, body condition, plasma CORT, and metabolite levels including glucose (Glu), triglyceride (TG), total cholesterol (TC), uric acid (UA), in breeding Eurasian Tree Sparrows (Passer montanus).Results: CORT and Glu levels were increased significantly by the stress of capture, whereas TC and UA levels decreased. Body mass, body condition declined notably after 24 h in captivity, but CORT, Glu, and UA levels increased. Furthermore, male sparrows had lower TG levels after both capture and captivity than those of females. The relationships between plasma CORT and metabolite levels varied between sexes. Conclusions:Our results revealed that the metabolic status of Eurasian Tree Sparrows could be dramatically altered by capture and captivity. Monitoring the dynamic effects of both capture and captivity on plasma CORT, metabolite levels in a free-living bird contributes to a better understanding of the stress-induced pathways involved in sexdependent energy mobilization.

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Captive house sparrows (Passer domesticus) show little evidence of seasonality of neophobia responses

2020

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Neophobia is a behavior characterized by a reluctance to approach novel objects. We measured neophobia in captive wild house sparrows (Passer domesticus) by comparing the time it took for hungry birds to approach their normal food dish compared to one that had been modified with a novel object. We tested the behavior of animals captured at different times of year to test for seasonal variation in neophobia. One group of birds This article is protected by copyright. All rights reserved.

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Chronic stress and the introduction to captivity: How wild house sparrows (Passer domesticus) adjust to laboratory conditions

Cited by 44 publications

References 37 publications

House sparrows (Passer domesticus) adjusted hypothalamic‐pituitary‐adrenal axis negative feedback and perch hopping activities in response to a single repeated stimulus

House sparrows (Passer domesticus) adjusted hypothalamic‐pituitary‐adrenal axis negative feedback and perch hopping activities in response to a single repeated stimulus

Effects of capture and captivity on plasma corticosterone and metabolite levels in breeding Eurasian Tree Sparrows

Captive house sparrows (Passer domesticus) show little evidence of seasonality of neophobia responses

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