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Quantification of salivary cortisol from captive dingoes (Canis dingo) in relation to age, sex, and breeding season: implications for captive management

journal contribution
posted on 29.08.2018, 00:00 by Bradley Smith, M Flavel, B Simpson
© Australian Mammal Society 2016.Captive-breeding programs can play a key role in the conservation of threatened species such as the Australian dingo (Canis dingo). It is important to determine whether holding and rearing practices impose stressors that impact negatively on program outcomes and the health and wellbeing of the captive population. Despite evidence that chronic stress has significant welfare implications, our understanding of 'stress' in either wild or captive dingoes remains limited. In a first attempt to rectify this, we report salivary cortisol concentrations in juvenile and adult dingoes held in a captive colony. Dingo puppies (n≤8, M≤0.484±0.09gdL-1) were found to have higher concentrations than adults (n≤12, M≤0.106±0.031gdL-1) (P<0.0001). Concentrations in adult females (n≤6, M≤0.113±0.030gdL-1) and males (n≤6, M≤0.099±0.033gdL-1) did not significantly differ (P≤0.4740). Our preliminary findings also suggest that during the annual breeding season, males (but not females) have elevated levels of corticosteroids. Establishing a reference range for cortisol concentrations is vital for researchers and wildlife carers attempting to measure stressors in both captive and wild dingo populations. This study provides useful insight into the influence of time of day, development, and seasonality on cortisol concentrations. Suggestions for future research and implications of routine cortisol evaluation to aid better management practices are also discussed.

Funding

Other

History

Volume

38

Issue

1

Start Page

21

End Page

28

Number of Pages

8

eISSN

1836-7402

ISSN

0310-0049

Publisher

CSIRO Publishing

Peer Reviewed

Yes

Open Access

No

Acceptance Date

17/08/2015

External Author Affiliations

La Trobe University; Flinders University

Author Research Institute

Appleton Institute

Era Eligible

Yes

Journal

Australian Mammalogy