Diurnal and annual changes in serum cortisol concentrations in Indo-Pacific bottlenose dolphins Tursiops aduncus and killer whales Orcinus orca

Suzuki, Miwa; Uchida, Senzo; Ueda, Kazuki; Tobayama, Teruo; Katsumata, Etsuko; Yoshioka, Motoi; Aida, Katsumi

doi:10.1016/s0016-6480(03)00100-x

Cited by 63 publications

(55 citation statements)

References 24 publications

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“…The stress, however, may be transient. We previously confirmed that serum F concentrations return to the basal level [Suzuki et al, 2003] 90 min after 30-60-min pseudo-transport in Indo-Pacific bottlenose dolphins [data unpublished]. In this study, serum F concentrations returned to the basal level within 1 day after the experiments.…”

Section: Discussionsupporting

confidence: 86%

Usage of high‐performance mattresses for transport of Indo‐Pacific bottlenose dolphin

et al. 2008

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Ground transport can be a stressful operation for dolphins if the long period of restraint causes damage to internal organs, especially to the lung, generated by their own weight. Buoyancy is deprived from dolphins under moist transport, in which dolphins are transported on mattresses. Upgrading mattresses is an effective way to modify the transportation method so as to compensate for the loss of buoyancy. In Indo-Pacific bottlenose dolphins (Tursiops aduncus), we tried to find mattresses that performed well at distributing the dolphins' weight and preserved their pulmonary function. When using EV-17 (thickness, 50 mm) put on EE-20 (thickness, 50 mm), a wider support area, less extreme changes in pressure, and lower maximum pressures were observed compared with other mattress systems tested. On this mattress system, lower breathing rates, lower heart rates, and higher exhaled CO(2) concentrations were shown compared with using standard mattresses. These results suggest that the performance of the combination of EV-17 and EE-20 is better than that of the standard mattress in terms of the cardiopulmonary function of dolphins. Zoo Biol 27:331-340, 2008. (c) 2008 Wiley-Liss, Inc.

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Section: Discussionsupporting

confidence: 86%

Usage of high‐performance mattresses for transport of Indo‐Pacific bottlenose dolphin

et al. 2008

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“…Further, hormones such as cortisol are known to exhibit diurnal variation. Diurnal variations have been reported in ACTH and cortisol concentrations in Beluga whales (D. leucas) (Schmitt et al, 2010) and in cortisol in Indo-Pacific bottlenose dolphins (Suzuki et al, 2003). No distinct diurnal fluctuations were found in catecholamines (Suzuki et al, 2012).…”

Section: Discussionmentioning

confidence: 98%

Stress response of wild bottlenose dolphins (Tursiops truncatus) during capture–release health assessment studies

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Schaefer

Romano

et al. 2014

General and Comparative Endocrinology

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“…For example, Fulkerson, Sawyer, and Gow (1980) found a significant variation in cortisol concentration levels between midnight and midmorning in dairy cattle. Irvine and Alexander (1994), who worked with horses, and Suzuki et al (2003), who worked with dolphins, found that both species had the highest cortisol concentrations in the morning and the lowest hormone levels in the evening and at night. In elephants, Brown, Kersey, Freeman, and Wagener (2010) found that urinary cortisol excretion showed high levels in the morning, which decreased during the evening.…”

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confidence: 98%

“…Knowledge of the basal secretory cortisol rhythms is necessary to evaluate the physiological significance of fluctuations in cortisol concentrations as a stress indicator in animals (Suzuki et al, 2003). There are several studies that assess the circadian pattern of cortisol secretion in some mammal species.…”

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confidence: 99%

Circadian Rhythm of Salivary Cortisol in Asian Elephants (Elephas maximus): A Factor to Consider During Welfare Assessment

Menargues

Urios

Limiñana

et al. 2012

Journal of Applied Animal Welfare Science

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Diurnal and annual changes in serum cortisol concentrations in Indo-Pacific bottlenose dolphins Tursiops aduncus and killer whales Orcinus orca

Cited by 63 publications

References 24 publications

Usage of high‐performance mattresses for transport of Indo‐Pacific bottlenose dolphin

Usage of high‐performance mattresses for transport of Indo‐Pacific bottlenose dolphin

Stress response of wild bottlenose dolphins (Tursiops truncatus) during capture–release health assessment studies

Circadian Rhythm of Salivary Cortisol in Asian Elephants (Elephas maximus): A Factor to Consider During Welfare Assessment

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