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Author  |
Angelier F., Moe B., Weimerskirch H. & Chastel O. |
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Title |
Age-specific reproductive success in a long-lived bird: do older parents better resist stress? |
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Journal Article |
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Year |
2007 |
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Journal of animal ecology |
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76 |
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1181-1191 |
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109 |
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0021-8790 |
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yes |
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4606 |
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Author |
Angelier F., Shaffer S.A., Weimerskirch H. & Chastel O. |
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Title |
Effect of age, breeding experience and senescence on corticosterone and prolactin levels in a long-lived seabird : the wandering albatross. |
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Journal Article |
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Year |
2006 |
Publication |
General and comparative endocrinology |
Abbreviated Journal |
Gen. Comp. Endocrinol. |
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Volume |
149 |
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Pages |
1-9 |
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109 |
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0016-6480 |
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yes |
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3695 |
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Title |
Corticosterone and foraging behavior in a pelagic seabird. |
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Journal Article |
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Year |
2007 |
Publication |
Physiological and biochemical zoology |
Abbreviated Journal |
Physiol. Biochem. Zool. |
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Volume |
80 |
Issue |
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Pages |
283-292 |
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109 |
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1522-2152 |
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yes |
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Call Number |
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Serial |
4591 |
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Author |
Angelier F., Weimerskirch H., Dano S. & Chastel O. |
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Title |
Age, experience and reproductive performance in a long-lived bird: a hormonal perspective. |
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Journal Article |
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Year |
2007 |
Publication |
Behavioral ecology and sociobiology |
Abbreviated Journal |
Behav. Ecol. Sociobiol. (Print) |
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Volume |
61 |
Issue |
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Pages |
611-621 |
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109 |
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ISSN |
0340-5443 |
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Approved |
yes |
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Serial |
4590 |
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Author |
Angelier Frédéric, Wingfield John C., Tartu Sabrina, Chastel Olivier |
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Title |
Does prolactin mediate parental and life-history decisions in response to environmental conditions in birds? A review |
Type |
Journal Article |
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Year |
2016 |
Publication |
Hormones and behavior |
Abbreviated Journal |
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Volume |
77 |
Issue |
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Pages |
18-29 |
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Abstract |
This article is part of a Special Issue “Parental Care”. In vertebrates, adjustments of physiology and behavior to environmental changes are often mediated by central physiological mechanisms, and more specifically by hormonal mechanisms. As a consequence, these mechanisms are thought to orchestrate life-history decisions in wild vertebrates. For instance, investigating the hormonal regulation of parental behavior is relevant to evaluate how parents modulate their effort according to specific environmental conditions. Surprisingly and despite being classically known as the ‘parental hormone’, prolactin has been overlooked in birds relative to this context. Our aim is to review evidence that changes in prolactin levels can mediate, at least to some extent, the response of breeding birds to environmental conditions. To do so, we first examine current evidence and limits for the role of prolactin in mediating parental behavior in birds. Second, we emphasize the influence of environmental conditions and stressors on circulating prolactin levels. In addition, we review to what extent prolactin levels are a reliable predictor of breeding success in wild birds. By linking environmental conditions, prolactin regulation, parental behavior, and breeding success, we highlight the potential role of this hormone in mediating parental decisions in birds. Finally, we also review the potential role of prolactin in mediating other life history decisions such as clutch size, re-nesting, and the timing of molt. By evaluating the influence of stressors on circulating prolactin levels during these other life-history decisions, we also raise new hypotheses regarding the potential of the prolactin stress response to regulate the orchestration of the annual cycle when environmental changes occur. To sum up, we show in this review that prolactin regulation has a strong potential to allow ecological physiologists to better understand how individuals adjust their life-history decisions (clutch size, parental behavior, re-nesting, and onset of molt) according to the environmental conditions they encounter and we encourage further research on that topic. |
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Programme |
109 |
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ISSN |
0018-506X |
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Notes |
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Approved |
yes |
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Call Number |
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Serial |
6488 |
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Author |
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Title |
Are stress hormone levels a good proxy of foraging success? An experiment with king penguins, Aptenodytes patagonicus.
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Type |
Journal Article |
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Year |
2009 |
Publication |
The Journal of experimental biology |
Abbreviated Journal |
J. Exp. Biol. |
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Volume |
212 |
Issue |
17 |
Pages |
2824 -9 |
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Keywords |
Animals, Body Composition, Corticosterone, Corticosterone: blood, Eating, Feeding Behavior, Female, Male, Spheniscidae, Spheniscidae: anatomy & histology, Spheniscidae: metabolism, Spheniscidae: physiology, |
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Abstract |
In seabirds, variations in stress hormone (corticosterone; henceforth CORT) levels have been shown to reflect changing marine conditions and, especially, changes in food availability. However, it remains unclear how CORT levels can be mechanistically affected by these changes at the individual level. Specifically, the influence of food acquisition and foraging success on CORT secretion is poorly understood. In this study, we tested whether food acquisition can reduce baseline CORT levels (;the food intake hypothesis') by experimentally reducing foraging success of King Penguins (Aptenodytes patagonicus). Although CORT levels overall decreased during a foraging trip, CORT levels did not differ between experimental birds and controls. These results demonstrate that mass gain at sea is not involved in changes in baseline CORT levels in this species. The overall decrease in CORT levels during a foraging trip could result from CORT-mediated energy regulation (;the energy utilisation hypothesis'). Along with other evidence, we suggest that the influence of foraging success and food intake on CORT levels is complex and that the ecological meaning of baseline CORT levels can definitely vary between species and ecological contexts. Therefore, further studies are needed to better understand (1) how baseline CORT levels are functionally regulated according to energetic status and energetic demands and (2) to what extent CORT can be used to aid in the conservation of seabird populations.
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Programme |
109;394 |
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Thesis |
Bachelor's thesis |
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ISSN |
0022-0949 |
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Approved |
yes |
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Call Number |
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Serial |
2217 |
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Author |
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Title |
What factors drive prolactin and corticosterone responses to stress in a long-lived bird species (snow petrel Pagodroma nivea)?
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Type |
Journal Article |
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Year |
2009 |
Publication |
Physiological and biochemical zoology : PBZ |
Abbreviated Journal |
Physiol. Biochem. Zool. |
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Volume |
82 |
Issue |
5 |
Pages |
590 -602 |
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Keywords |
Adrenal Glands, Adrenal Glands: drug effects, Adrenal Glands: secretion, Adrenocorticotropic Hormone, Adrenocorticotropic Hormone: administration & dosa, Adrenocorticotropic Hormone: secretion, Animals, Behavior, Animal, Birds, Birds: blood, Birds: physiology, Breeding, Corticosterone, Corticosterone: blood, Corticosterone: secretion, Female, Longevity, Male, Models, Biological, Prolactin, Prolactin: blood, Prolactin: secretion, Reproduction, Sex Characteristics, Stress, Physiological, |
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Abstract |
Life-history theory predicts that individuals should adapt their parental investment to the costs and benefits of the current reproductive effort. This could be achieved by modulating the hormonal stress response, which may shift energy investment away from reproduction and redirect it toward survival. In birds, this stress response consists of a release of corticosterone that may be accompanied by a decrease in circulating prolactin, a hormone involved in the regulation of parental care. We lack data on the modulation of the prolactin stress response. In this study, we tested the hypothesis that individuals should modulate their prolactin stress response according to the fitness value of the current reproductive effort relative to the fitness value of future reproduction. Specifically, we examined the influence of breeding status (failed breeders vs. incubating birds) and body condition on prolactin and corticosterone stress responses in a long-lived species, the snow petrel Pagodroma nivea. When facing stressors, incubating birds had higher prolactin levels than failed breeders. However, we found no effect of body condition on the prolactin stress response. The corticosterone stress response was modulated according to body condition but was not affected by breeding status. We also performed an experiment using injections of adrenocorticotropic hormone (ACTH) and found that the modulation of the corticosterone stress response was probably associated with a reduction in ACTH release by the pituitary and a decrease in adrenal sensitivity to ACTH. In addition, we examined whether prolactin and corticosterone secretion were functionally linked. We found that these two hormonal stress responses were not correlated. Moreover, injection of ACTH did not affect prolactin levels, demonstrating that short-term variations in prolactin levels are not governed directly or indirectly by ACTH release. Thus, we suggest that the corticosterone and prolactin responses to short-term stressors are independent and may therefore mediate some specific components of parental investment in breeding birds. With mounting evidence, we suggest that examining both corticosterone and prolactin stress responses could be relevant to parental investment in vertebrates.
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109 |
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1522-2152 |
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Approved |
yes |
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Call Number |
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Serial |
2219 |
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Title |
Capture and blood sampling do not affect foraging behaviour, breeding success and return rate of a large seabird: the black-browed albatross |
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Journal Article |
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Year |
2011 |
Publication |
Polar Biology |
Abbreviated Journal |
Polar Biol. |
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Volume |
34 |
Issue |
3 |
Pages |
353-361 |
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Keywords |
Biomedical and Life Sciences, |
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Abstract |
During the last decades, eco-physiological studies have usually relied on the collection of blood from wild organisms in order to obtain relevant physiological measures. However, accurate estimates of the impact of capture and blood collection on performances of Polar seabird species have rarely been conducted. We investigated for the first time the effects of a blood sampling process on subsequent foraging behaviour, reproductive performance and return rate of black-browed albatrosses ( Thalassarche melanophris ) at Kerguelen Islands. We did not find any evidence that the blood sampling process as conducted in our study had detrimental effects on the breeding or foraging strategies or performance of black-browed albatrosses. Because blood collection can be performed in several different ways, we recommend that eco-physiologists conduct pilot studies to test whether their blood sampling process affects the performances of their study species. |
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109 |
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Springer Berlin / Heidelberg |
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ISSN |
0722-4060 |
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yes |
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Serial |
3425 |
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Title |
Does short-term fasting lead to stressed-out parents? A study of incubation commitment and the hormonal stress responses and recoveries in snow petrels.
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Journal Article |
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Year |
2015 |
Publication |
Hormones and behavior |
Abbreviated Journal |
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Volume |
67 |
Issue |
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Pages |
28-37 |
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Keywords |
Animals, Animals, Wild, Birds, Birds: metabolism, Birds: physiology, Corticosterone, Corticosterone: metabolism, Fasting, Fasting: metabolism, Female, Male, Maternal Behavior, Maternal Behavior: physiology, Nesting Behavior, Nesting Behavior: physiology, Paternal Behavior, Paternal Behavior: physiology, Prolactin, Prolactin: metabolism, Stress, Physiological, Stress, Physiological: physiology, |
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Abstract |
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.
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109 |
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0018-506X |
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yes |
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Serial |
6159 |
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Title |
Modulation of the prolactin and the corticosterone stress responses: Do they tell the same story in a long-lived bird, the Cape petrel?
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Journal Article |
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Year |
2013 |
Publication |
GENERAL AND COMPARATIVE ENDOCRINOLOGY |
Abbreviated Journal |
Gen. Comp. Endocrinol. |
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Volume |
182 |
Issue |
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Pages |
7-15 |
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Keywords |
Corticosterone, Daption capense, Fitness, Parental investment, Prolactin, Stress response, |
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109 |
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0016-6480 |
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yes |
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Call Number |
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Serial |
4434 |
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