TY  - JOUR
AU  - Angelier Frédéric, Wingfield John C.
PY  - 2015//
TI  - Does short-term fasting lead to stressed-out parents? A study of incubation commitment and the hormonal stress responses and recoveries in snow petrels.
JO  - Hormones and behavior
SP  - 28
EP  - 37
VL  - 67
KW  - Animals
KW  - Wild
KW  - Birds
KW  - Birds: metabolism
KW  - Birds: physiology
KW  - Corticosterone
KW  - Corticosterone: metabolism
KW  - Fasting
KW  - Fasting: metabolism
KW  - Female
KW  - Male
KW  - Maternal Behavior
KW  - Maternal Behavior: physiology
KW  - Nesting Behavior
KW  - Nesting Behavior: physiology
KW  - Paternal Behavior
KW  - Paternal Behavior: physiology
KW  - Prolactin
KW  - Prolactin: metabolism
KW  - Stress
KW  - Physiological
KW  - Physiological: physiology
KW  -
N2  - The hormonal stress response is flexible and can be modulated by individuals according to its costs and benefits. Therefore, it is predicted that parents in poor body condition should modify their hormonal stress response, and thus, redirect energy allocation processes from parental care to self-maintenance when stressors occur. To test this prediction, most studies on free-living vertebrates have only focused on the stress response while the stress recovery – how quickly hormonal levels return to baseline values – has been neglected. Moreover, most studies have only focused on corticosterone – the primary mediator of allostasis – without paying attention to prolactin despite its major role in mediating parental behaviors. Here, we examined the effect of a short-term fasting event on the corticosterone and prolactin stress responses and recoveries, and we subsequently explored their relationships with parental decision in the snow petrel (Pagodroma nivea). By comparing the hormonal profiles of fasting and non-fasting snow petrels, we showed that parents modulate their corticosterone (but not prolactin) stress response according to their energetic status. We also described for the first time the hormonal stress recoveries in wild birds and found that they did not differ between fasting and non-fasting birds. Importantly, egg neglect was negatively correlated with circulating prolactin but not corticosterone levels in this species, demonstrating therefore a complex link between body condition, parental behavior and circulating corticosterone and prolactin levels. We suggest that both corticosterone and prolactin play a major role in the way parents adjust to stressors. This multiple signaling may allow parents to fine-tune their response to stressors, and especially, to activate specific allostasis-related mechanisms in a timely manner.
SN  - 0018-506X
UR  - http://dx.doi.org/10.1016/j.yhbeh.2014.11.009
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=6159), last updated on Wed, 03 Jul 2024 19:05:42 +0200
ID  - AngelierFrederic2015
ER  -