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Rudolph K, Fichtel C, Heistermann M, Kappeler PM. Dynamics and determinants of glucocorticoid metabolite concentrations in wild Verreaux's sifakas. Horm Behav 2020; 124:104760. [PMID: 32330550 DOI: 10.1016/j.yhbeh.2020.104760] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 04/14/2020] [Accepted: 04/16/2020] [Indexed: 10/24/2022]
Abstract
Glucocorticoids have wide-ranging effects on animals' behaviour, but many of these effects remain poorly understood because numerous confounding factors have often been neglected in previous studies. Here, we present data from a 2-year study of 7 groups of wild Verreaux's sifakas (Propithecus verreauxi), in which we examined concentrations of faecal glucocorticoid metabolites (fGCMs, n = 2350 samples) simultaneously in relation to ambient temperatures, food intake, rank, reproduction, adult sex ratios, social interactions, vigilance and self-scratching. Multi-variate analyses revealed that fGCM concentrations were positively correlated with increases in daily temperature fluctuations and tended to decrease with increasing fruit intake. fGCM concentrations increased when males were sexually mature and began to disperse, and dominant males had higher fGCM concentrations than subordinate males. In contrast to males, older females showed a non-significant trend to have lower fGCM levels, potentially reflecting differences in male and female life-history strategies. Reproducing females had the highest fGCM concentrations during late gestation and had higher fGCM levels than non-reproducing females, except during early lactation. Variation in fGCM concentrations was not associated with variation in social interactions, adult sex ratios, vigilance and self-scratching. Altogether, we show that measures of glucocorticoid output constitute appropriate tools for studying energetic burdens of ecological and reproductive challenges. However, they seem to be insufficient indicators for immediate endocrinological responses to social and nonsocial behaviours that are not directly linked to energy metabolism.
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Affiliation(s)
- Katja Rudolph
- Behavioral Ecology & Sociobiology Unit, German Primate Center, Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany; Dept. Sociobiology/Anthropology, Johann-Friedrich-Blumenbach Institute of Zoology and Anthropology, University Göttingen, Kellnerweg 6, 37077 Göttingen, Germany; Leibniz Science Campus "Primate Cognition", Göttingen, Germany.
| | - Claudia Fichtel
- Behavioral Ecology & Sociobiology Unit, German Primate Center, Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany; Leibniz Science Campus "Primate Cognition", Göttingen, Germany.
| | - Michael Heistermann
- Endocrinology Laboratory, German Primate Center, Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany.
| | - Peter M Kappeler
- Behavioral Ecology & Sociobiology Unit, German Primate Center, Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany; Dept. Sociobiology/Anthropology, Johann-Friedrich-Blumenbach Institute of Zoology and Anthropology, University Göttingen, Kellnerweg 6, 37077 Göttingen, Germany.
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Ducouret P, Romano A, Dreiss AN, Marmaroli P, Falourd X, Roulin A. The Art of Diplomacy in Vocally Negotiating Barn Owl Siblings. Front Ecol Evol 2019. [DOI: 10.3389/fevo.2019.00351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ducouret P, Dreiss AN, Gémard C, Falourd X, Roulin A. Barn owl nestlings vocally escalate when interrupted by a sibling: evidence from an interactive playback experiment. Anim Behav 2018. [DOI: 10.1016/j.anbehav.2018.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Pika S, Wilkinson R, Kendrick KH, Vernes SC. Taking turns: bridging the gap between human and animal communication. Proc Biol Sci 2018; 285:20180598. [PMID: 29875303 PMCID: PMC6015850 DOI: 10.1098/rspb.2018.0598] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 04/26/2018] [Indexed: 11/24/2022] Open
Abstract
Language, humans' most distinctive trait, still remains a 'mystery' for evolutionary theory. It is underpinned by a universal infrastructure-cooperative turn-taking-which has been suggested as an ancient mechanism bridging the existing gap between the articulate human species and their inarticulate primate cousins. However, we know remarkably little about turn-taking systems of non-human animals, and methodological confounds have often prevented meaningful cross-species comparisons. Thus, the extent to which cooperative turn-taking is uniquely human or represents a homologous and/or analogous trait is currently unknown. The present paper draws attention to this promising research avenue by providing an overview of the state of the art of turn-taking in four animal taxa-birds, mammals, insects and anurans. It concludes with a new comparative framework to spur more research into this research domain and to test which elements of the human turn-taking system are shared across species and taxa.
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Affiliation(s)
- Simone Pika
- Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
- Department of Comparative Biocognition, Institute of Cognitive Science, University of Osnabrück, Osnabrück, Germany
| | - Ray Wilkinson
- Department of Human Communication Sciences, University of Sheffield, Sheffield, UK
| | - Kobin H Kendrick
- Department of Language and Linguistic Science, University of York, York, UK
| | - Sonja C Vernes
- Neurogenetics of Vocal Communication, Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
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Dreiss AN, Ducouret P, Ruppli CA, Rossier V, Hernandez L, Falourd X, Marmaroli P, Cazau D, Lissek H, Roulin A. No need to shout: Effect of signal loudness on sibling communication in barn owlsTyto alba. Ethology 2017. [DOI: 10.1111/eth.12612] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Amélie N. Dreiss
- Department of Ecology and Evolution; University of Lausanne; Lausanne Switzerland
| | - Pauline Ducouret
- Department of Ecology and Evolution; University of Lausanne; Lausanne Switzerland
| | - Charlène A. Ruppli
- Department of Ecology and Evolution; University of Lausanne; Lausanne Switzerland
| | - Virginie Rossier
- Department of Ecology and Evolution; University of Lausanne; Lausanne Switzerland
- University Paris 13 - Sorbonne Paris Cité; Villetaneuse France
| | - Lucile Hernandez
- Department of Ecology and Evolution; University of Lausanne; Lausanne Switzerland
- Université de Bourgogne; Dijon France
| | | | | | - Dorian Cazau
- ENSTA Bretagne; Lab-STICC (UMR CNRS 6285); Brest Cedex 09 France
| | - Hervé Lissek
- Signal Processing Laboratory; Ecole Polytechnique Fédérale de Lausanne (EPFL); Lausanne Switzerland
| | - Alexandre Roulin
- Department of Ecology and Evolution; University of Lausanne; Lausanne Switzerland
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Dreiss AN, Gaime F, Delarbre A, Moroni L, Lenarth M, Roulin A. Vocal communication regulates sibling competition over food stock. Behav Ecol Sociobiol 2016. [DOI: 10.1007/s00265-016-2114-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Social huddling and physiological thermoregulation are related to melanism in the nocturnal barn owl. Oecologia 2015; 180:371-81. [PMID: 26552377 DOI: 10.1007/s00442-015-3491-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 10/19/2015] [Indexed: 12/11/2022]
Abstract
Endothermic animals vary in their physiological ability to maintain a constant body temperature. Since melanin-based coloration is related to thermoregulation and energy homeostasis, we predict that dark and pale melanic individuals adopt different behaviours to regulate their body temperature. Young animals are particularly sensitive to a decrease in ambient temperature because their physiological system is not yet mature and growth may be traded-off against thermoregulation. To reduce energy loss, offspring huddle during periods of cold weather. We investigated in nestling barn owls (Tyto alba) whether body temperature, oxygen consumption and huddling were associated with melanin-based coloration. Isolated owlets displaying more black feather spots had a lower body temperature and consumed more oxygen than those with fewer black spots. This suggests that highly melanic individuals display a different thermoregulation strategy. This interpretation is also supported by the finding that, at relatively low ambient temperature, owlets displaying more black spots huddled more rapidly and more often than those displaying fewer spots. Assuming that spot number is associated with the ability to thermoregulate not only in Swiss barn owls but also in other Tytonidae, our results could explain geographic variation in the degree of melanism. Indeed, in the northern hemisphere, barn owls and allies are less spotted polewards than close to the equator, and in the northern American continent, barn owls are also less spotted in colder regions. If melanic spots themselves helped thermoregulation, we would have expected the opposite results. We therefore suggest that some melanogenic genes pleiotropically regulate thermoregulatory processes.
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Romano A, Rubolini D, Caprioli M, Musitelli F, Ambrosini R, Saino N. Parent-Absent Begging in Barn Swallow Broods: Causes of Individual Variation and Effects on Sibling Interactions and Food Allocation. Evol Biol 2015. [DOI: 10.1007/s11692-015-9336-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Information Retention During Competitive Interactions: Siblings Need to Constantly Repeat Vocal Displays. Evol Biol 2014. [DOI: 10.1007/s11692-014-9299-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Falk J, Wong JWY, Kölliker M, Meunier J. Sibling Cooperation in Earwig Families Provides Insights into the Early Evolution of Social Life. Am Nat 2014; 183:547-57. [DOI: 10.1086/675364] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Dreiss AN, Ruppli CA, Roulin A. Individual vocal signatures in barn owl nestlings: does individual recognition have an adaptive role in sibling vocal competition? J Evol Biol 2013; 27:63-75. [PMID: 24266879 DOI: 10.1111/jeb.12277] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 09/17/2013] [Accepted: 10/03/2013] [Indexed: 11/30/2022]
Abstract
To compete over limited parental resources, young animals communicate with their parents and siblings by producing honest vocal signals of need. Components of begging calls that are sensitive to food deprivation may honestly signal need, whereas other components may be associated with individual-specific attributes that do not change with time such as identity, sex, absolute age and hierarchy. In a sib-sib communication system where barn owl (Tyto alba) nestlings vocally negotiate priority access to food resources, we show that calls have individual signatures that are used by nestlings to recognize which siblings are motivated to compete, even if most vocalization features vary with hunger level. Nestlings were more identifiable when food-deprived than food-satiated, suggesting that vocal identity is emphasized when the benefit of winning a vocal contest is higher. In broods where siblings interact iteratively, we speculate that individual-specific signature permits siblings to verify that the most vocal individual in the absence of parents is the one that indeed perceived the food brought by parents. Individual recognition may also allow nestlings to associate identity with individual-specific characteristics such as position in the within-brood dominance hierarchy. Calls indeed revealed age hierarchy and to a lower extent sex and absolute age. Using a cross-fostering experimental design, we show that most acoustic features were related to the nest of origin (but not the nest of rearing), suggesting a genetic or an early developmental effect on the ontogeny of vocal signatures. To conclude, our study suggests that sibling competition has promoted the evolution of vocal behaviours that signal not only hunger level but also intrinsic individual characteristics such as identity, family, sex and age.
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Affiliation(s)
- A N Dreiss
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - C A Ruppli
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - A Roulin
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
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