Subject characteristics
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n = 10 rehabilitated, adult hedgehogs
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n = 15 rehabilitated, juvenile hedgehogs
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n = 8 wild hedgehogs (3 juveniles, 5 unidentified)
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n = 10 wild, juvenile hedgehogs
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Glucocorticoid analyses
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Sampling
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Faecal samples (n = 10)
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Saliva samples (n = 57)
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Saliva samples (n = 4)
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Faecal samples (n = 67)
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Faecal samples (n = 9)
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Sampling before (wild) and during captivity (both groups) and post release (both groups)
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Laboratory procedure
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Testing:
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Testing:
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Testing:
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Faecal corticosterone metabolite levels (n = 10)
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Faecal corticosterone metabolite levels (n = 67)
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Faecal corticosterone metabolite levels (n = 9)
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Saliva corticosterone levels (n = 57)
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Faecal cortisol metabolite levels (n = 7)
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Saliva cortisol levels (n = 4)
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Personality testing
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Not performed
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Novel arena test on day 1 in enclosures
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Not performed
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Novel object tests on day 3 and 5 in enclosures
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Release into the wild
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Not performed
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After 7 days in enclosures (n = 18, 8 rehabilitated and 10 wild juveniles)
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Already free-living
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Post release monitoring of survival and spatial behaviour
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Not performed
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Radio tracking of 18 juveniles, out of which 1 was unaccounted for
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Results not included in the present study: Radio tracking of the 3 radio tagged wild juveniles (Rasmussen et al. (2019))
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Data analyses
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Faecal corticosterone metabolite levels in relation to background, sex and health
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Linear mixed effects model (LME) for all cohorts
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Linear mixed effects model (LME) for all cohorts
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Linear mixed effects model (LME) for all cohorts
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Saliva corticosterone levels in relation to background, sex and health
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Linear mixed effects model (LME)
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Personality (novel arena and novel object tests)
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Principal component analyses (PCA)
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Effects of personality (shy/bold) and background (wild/rehabilitated) on post release survival
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Fisher's exact test
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