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Corticosterone responses of hand‐reared and parent‐reared grey‐faced petrel chicks ( Pterodroma macroptera gouldi )
Author(s) -
Adams N.J.,
Cockrem J.F.,
Taylor G.A.,
Candy E.J.,
Bridges J.
Publication year - 2005
Publication title -
zoo biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.5
H-Index - 54
eISSN - 1098-2361
pISSN - 0733-3188
DOI - 10.1002/zoo.20047
Subject(s) - biology , corticosterone , habituation , endocrinology , zoology , medicine , hormone , neuroscience
Hand‐reared grey‐faced petrel ( Pterodroma macroptera gouldi ) chicks (Order Procellariformes) that were subjected to a standardised blood sampling protocol immediately before they fledged showed a reduced corticosterone response compared to parent‐raised chicks. Serum corticosterone concentrations were lower in hand‐reared than parent‐reared birds 30 and 60 min after handling was initiated (21.5±6.7 vs. 105.4±7.4 ng/ml at 30 min, and 11.3±3.6 vs. 93.8±11.4 ng/ml at 60 min, respectively). The total integrated corticosterone response and the response corrected for initial corticosterone concentrations were similarly lower in hand‐reared than parent‐reared birds (927±489 vs. 4639±1924 ng/ml.min, and 529±352 vs. 4110±1896 ng/ml.min, respectively). Habituation to handling associated with hand‐rearing, which is expressed as a subdued corticostrone response, is likely to reduce the physiological stress associated with the translocation and reintroduction of these birds. However, the longer‐term consequences of this attenuated response remain unclear. Zoo Biol 0:1–8, 2005. © 2005 Wiley‐Liss, Inc.