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Touati L, Athamnia M, Boucheker A, Belabed BE, Samraoui F, Alfarhan AH, Møller AP, Samraoui B. To Flee or Not to Flee: How Age, Reproductive Phase, and Mate Presence Affect White Stork Flight Decisions. Animals (Basel) 2023; 13:2920. [PMID: 37760320 PMCID: PMC10525893 DOI: 10.3390/ani13182920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 09/29/2023] Open
Abstract
Recognizing, assessing, and responding to threats is critical for survival in the wild. Birds, especially in their role as parents, must decide whether to flee or delay flight when threatened. This study examines how age, reproductive stage, and the presence of a mate influence flight initiation distance (FID) and nest recess duration in white storks. Analyzing the data with a generalized additive mixed model (GAMM), we found significant correlations between FID and age, reproductive stage, and presence of a mate. These results suggest that the trade-off between current and future reproduction shifts during critical breeding periods, such as incubation and nestling care. To increase breeding success, White Storks appear willing to take risks and extend their stay in the nest when offspring are most valuable and vulnerable. In the presence of a mate, individuals leave the nest earlier, suggesting possible sexual conflict over parental care. The duration of nest abandonment is consistent with FID, except for age. These results illustrate how parental age, brood value, vulnerability, and sexual dynamics influence white stork flight decisions in complex ways. Understanding these dynamics enriches our knowledge of bird behavior and adaptations to environmental challenges and highlights the complexity of parental decision making.
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Affiliation(s)
- Laïd Touati
- Laboratoire de Recherche et de Conservation des Zones Humides, University of Guelma, Guelma 24000, Algeria; (L.T.); (M.A.); (A.B.); (F.S.)
- Biology and Plant Ecology Department, Mentouri Brothers Constantine 1 University, Constantine 25000, Algeria
| | - Mohamed Athamnia
- Laboratoire de Recherche et de Conservation des Zones Humides, University of Guelma, Guelma 24000, Algeria; (L.T.); (M.A.); (A.B.); (F.S.)
- Department of Ecology, University 8 Mai 1945, Guelma 24000, Algeria
| | - Abdennour Boucheker
- Laboratoire de Recherche et de Conservation des Zones Humides, University of Guelma, Guelma 24000, Algeria; (L.T.); (M.A.); (A.B.); (F.S.)
- Department of Biology, University Badji Mokhtar, Annaba 23000, Algeria;
| | | | - Farrah Samraoui
- Laboratoire de Recherche et de Conservation des Zones Humides, University of Guelma, Guelma 24000, Algeria; (L.T.); (M.A.); (A.B.); (F.S.)
- Department of Biology, University Badji Mokhtar, Annaba 23000, Algeria;
| | - Ahmed H. Alfarhan
- Department of Botany & Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
| | - Anders P. Møller
- AgroParisTech, Ecologie Systématique et Evolution, Université Paris-Saclay, CNRS, 91190 Gif-sur-Yvette, France;
| | - Boudjéma Samraoui
- Laboratoire de Recherche et de Conservation des Zones Humides, University of Guelma, Guelma 24000, Algeria; (L.T.); (M.A.); (A.B.); (F.S.)
- Department of Biology, University Badji Mokhtar, Annaba 23000, Algeria;
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2
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Duckworth RA, Chenard KC, Meza L, Beiriz MC. Coping styles vary with species' sociality and life history: A systematic review and meta-regression analysis. Neurosci Biobehav Rev 2023; 151:105241. [PMID: 37216998 DOI: 10.1016/j.neubiorev.2023.105241] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 05/15/2023] [Accepted: 05/17/2023] [Indexed: 05/24/2023]
Abstract
Despite a long history of animal studies investigating coping styles, the causal connections between behavior and stress physiology remain unclear. Consistency across taxa in effect sizes would support the idea of a direct causal link maintained by either functional or developmental dependencies. Alternatively, lack of consistency would suggest coping styles are evolutionarily labile. Here, we investigated correlations between personality traits and baseline and stress-induced glucocorticoid levels using a systematic review and meta-analysis. Most personality traits did not consistently vary with either baseline or stress-induced glucocorticoids. Only aggression and sociability showed a consistent negative correlation with baseline glucocorticoids. We found that life history variation affected the relationship between stress-induced glucocorticoid levels and personality traits, especially anxiety and aggression. The relationship between anxiety and baseline glucocorticoids depended on species' sociality with solitary species showing more positive effect sizes. Thus, integration between behavioral and physiological traits depends on species' sociality and life history and suggests high evolutionary lability of coping styles.
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Affiliation(s)
- Renée A Duckworth
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA.
| | - Kathryn C Chenard
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA
| | - Lexis Meza
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA
| | - Maria Carolina Beiriz
- Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA; Department of Ecology and Natural Resources, Universidade Federal do Ceará, Fortaleza, CE 60440-900, Brazil
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3
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Gulotta NA, Mathot KJ. Does fluctuating selection maintain variation in nest defense behavior in Arctic peregrine falcons ( Falco peregrinus tundrius)? Ecol Evol 2022; 12:e9284. [PMID: 36177133 PMCID: PMC9471043 DOI: 10.1002/ece3.9284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 08/04/2022] [Accepted: 08/17/2022] [Indexed: 11/10/2022] Open
Abstract
Behavioral expression can vary both within- (i.e., plasticity) and among-individuals (i.e., animal personality), and understanding the causes and consequences of variation at each of these levels is a major area of investigation in contemporary behavioral ecology. Here, we studied sources of variation in both plasticity and personality in nest defense behavior in Arctic peregrine falcons (Falco peregrinus tundrius) in two consecutive years. We found that peregrines adjusted their nest defense in response to nesting stage and year, revealing plastic, state-dependent, adjustment of nest defense. At the same time, nest defense behavior was repeatable in peregrine falcons both within and between years. We tested if fluctuating selection on behavioral types (i.e., individuals average phenotypic expression) and/or assortative mating acted to maintain long-term among-individual differences in nest defense behavior. We found that selection on female nest defense differed across years; being positive in 1 year and negative in the other. We also found support for assortative mating in the first year, but disassortative mating in the second. We propose two potential explanations for the observed year-specific patterns of nonrandom mating: (1) year-specific plastic adjustment of nest defense and/or (2) changes in the age-structure of the breeding population. These posthoc explanations are speculative, and require further study. Unfortunately, we could not evaluate this directly with the available data, and future studies are needed with more than 2 years of data on nest-defense and fitness outcomes, and with a larger number of marked individuals, to properly evaluate these potential explanations.
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Affiliation(s)
- Nick A Gulotta
- Department of Biological Sciences University of Alberta Edmonton Alberta Canada.,Nunavut Wildlife Cooperative Research Unit University of Alberta Edmonton Alberta Canada.,Present address: Warnell School of Forestry and Natural Resources University of Georgia Athens Georgia USA
| | - Kimberley J Mathot
- Department of Biological Sciences University of Alberta Edmonton Alberta Canada.,Nunavut Wildlife Cooperative Research Unit University of Alberta Edmonton Alberta Canada
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4
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López-López P, Perona AM, Egea-Casas O, Morant J, Urios V. Tri-axial accelerometry shows differences in energy expenditure and parental effort throughout the breeding season in long-lived raptors. Curr Zool 2021; 68:57-67. [PMID: 35169629 PMCID: PMC8836325 DOI: 10.1093/cz/zoab010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 01/23/2021] [Indexed: 12/04/2022] Open
Abstract
Cutting-edge technologies are extremely useful to develop new workflows in studying ecological data, particularly to understand animal behavior and movement trajectories at the individual level. Although parental care is a well-studied phenomenon, most studies have been focused on direct observational or video recording data, as well as experimental manipulation. Therefore, what happens out of our sight still remains unknown. Using high-frequency GPS/GSM dataloggers and tri-axial accelerometers we monitored 25 Bonelli’s eagles Aquila fasciata during the breeding season to understand parental activities from a broader perspective. We used recursive data, measured as number of visits and residence time, to reveal nest attendance patterns of biparental care with role specialization between sexes. Accelerometry data interpreted as the overall dynamic body acceleration, a proxy of energy expenditure, showed strong differences in parental effort throughout the breeding season and between sexes. Thereby, males increased substantially their energetic requirements, due to the increased workload, while females spent most of the time on the nest. Furthermore, during critical phases of the breeding season, a low percentage of suitable hunting spots in eagles’ territories led them to increase their ranging behavior in order to find food, with important consequences in energy consumption and mortality risk. Our results highlight the crucial role of males in raptor species exhibiting biparental care. Finally, we exemplify how biologging technologies are an adequate and objective method to study parental care in raptors as well as to get deeper insight into breeding ecology of birds in general.
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Affiliation(s)
- Pascual López-López
- Movement Ecology Laboratory, Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia. C/Catedrático José, Beltrán 2, E-46980 Paterna, Valencia, Spain
| | - Arturo M Perona
- Movement Ecology Laboratory, Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia. C/Catedrático José, Beltrán 2, E-46980 Paterna, Valencia, Spain
| | - Olga Egea-Casas
- Movement Ecology Laboratory, Cavanilles Institute of Biodiversity and Evolutionary Biology, University of Valencia. C/Catedrático José, Beltrán 2, E-46980 Paterna, Valencia, Spain
| | - Jon Morant
- Department of Ornithology, Aranzadi Sciences Society, Donostia-S. Sebastián, Guipúzcoa 03690, Spain
| | - Vicente Urios
- Vertebrates Zoology Research Group, University of Alicante, Apdo. 99, Alicante E-03080, Spain
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de Jong ME, Nicolaus M, Fokkema RW, Loonen MJJE. State dependence explains individual variation in nest defence behaviour in a long-lived bird. J Anim Ecol 2021; 90:809-819. [PMID: 33340107 PMCID: PMC8048547 DOI: 10.1111/1365-2656.13411] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 11/24/2020] [Indexed: 11/29/2022]
Abstract
Parental care, such as nest or offspring defence, is crucial for offspring survival in many species. Yet, despite its obvious fitness benefits, the level of defence can consistently vary between individuals of the same species. One prominent adaptive explanation for consistent individual differences in behaviours involves state dependency: relatively stable differences in individual state should lead to the emergence of repeatable behavioural variation whereas changes in state should lead to a readjustment of behaviour. Therefore, empirical testing of adaptive state dependence requires longitudinal data where behaviour and state of individuals of the same population are repeatedly measured. Here, we test if variation in states predicts nest defence behaviour (a ‘risky’ behaviour) in a long‐lived species, the barnacle goose Branta leucopsis. Adaptive models have predicted that an individual's residual reproductive value or ‘asset’ is an important state variable underlying variation in risk‐taking behaviour. Hence, we investigate how nest defence varies as a function of time of the season and individual age, two state variables that can vary between and within individuals and determine asset. Repeated measures of nest defence towards a human intruder (flight initiation distance or FID) of females of known age were collected during 15 breeding seasons. Increasing values of FID represent increasing shyness. We found that females strongly and consistently differed in FID within‐ and between‐years. As predicted by theory, females adjusted their behaviour to state by decreasing their FID with season and age. Decomposing these population patterns into within‐ and between‐individual effects showed that the state‐dependent change in FID was driven by individual plasticity in FID and that bolder females were more plastic than shyer females. This study shows that nest defence behaviour differs consistently among individuals and is adjusted to individual state in a direction predicted by adaptive personality theory.
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Affiliation(s)
- Margje E de Jong
- Department of Behavioral and Cognitive Biology, University of Vienna, Vienna, Austria.,Arctic Centre, University of Groningen, Groningen, The Netherlands
| | - Marion Nicolaus
- Conservation Ecology Group, Groningen Institute for Evolutionary Life Science (GELIFES), University of Groningen, Groningen, The Netherlands
| | - Rienk W Fokkema
- Arctic Centre, University of Groningen, Groningen, The Netherlands
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Merling de Chapa M, Courtiol A, Engler M, Giese L, Rutz C, Lakermann M, Müskens G, van der Horst Y, Zollinger R, Wirth H, Kenntner N, Krüger O, Chakarov N, Müller AK, Looft V, Grünkorn T, Hallau A, Altenkamp R, Krone O. Phantom of the forest or successful citizen? Analysing how Northern Goshawks ( Accipiter gentilis) cope with the urban environment. ROYAL SOCIETY OPEN SCIENCE 2020; 7:201356. [PMID: 33489280 PMCID: PMC7813232 DOI: 10.1098/rsos.201356] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 11/30/2020] [Indexed: 05/31/2023]
Abstract
By 2040, roughly two-thirds of humanity are expected to live in urban areas. As cities expand, humans irreversibly transform natural ecosystems, creating both opportunities and challenges for wildlife. Here, we investigate how the Northern Goshawk (Accipiter gentilis) is adjusting to urban environments. We measured a variety of behavioural and ecological parameters in three urban and four rural study sites. City life appeared related to all parameters we measured. Urban female goshawks were overall 21.7 (CI95% 5.13-130) times more likely to defend their nestlings from humans than rural females. Urban goshawks were 3.64 (CI95% 2.05-6.66) times more likely to feed on pigeons and had diets exhibiting lower overall species richness and diversity. Urban females laid eggs 12.5 (CI95% 7.12-17.4) days earlier than rural individuals and were 2.22 (CI95% 0.984-4.73) times more likely to produce a brood of more than three nestlings. Nonetheless, urban goshawks suffered more from infections with the parasite Trichomonas gallinae, which was the second most common cause of mortality (14.6%), after collisions with windows (33.1%). In conclusion, although city life is associated with significant risks, goshawks appear to thrive in some urban environments, most likely as a result of high local availability of profitable pigeon prey. We conclude that the Northern Goshawk can be classified as an urban exploiter in parts of its distribution.
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Affiliation(s)
- Manuela Merling de Chapa
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, 10315 Berlin, Germany
| | - Alexandre Courtiol
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, 10315 Berlin, Germany
| | - Marc Engler
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, 10315 Berlin, Germany
| | - Lisa Giese
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, 10315 Berlin, Germany
| | - Christian Rutz
- Centre for Biological Diversity, School of Biology, University of St Andrews, St Andrews KY16 9TH, UK
| | | | - Gerard Müskens
- Wageningen Environmental Research (WENR), Animal Ecology Team, PO Box 47, NL-6700 AA, Wageningen, The Netherlands
| | - Youri van der Horst
- Vogeltrekstation, Dutch Centre for Avian Migration and Demography (NIOO-KNAW), Postbus 50, 6700 AB Wageningen, The Netherlands
| | | | - Hans Wirth
- Ornithologische Arbeitsgemeinschaft Schleswig-Holstein, Wiesengrund 11, 22967 Tremsbüttel, Germany
| | | | - Oliver Krüger
- Department of Animal Behaviour, Bielefeld University, Morgenbreede 45, 33615 Bielefeld, Germany
| | - Nayden Chakarov
- Department of Animal Behaviour, Bielefeld University, Morgenbreede 45, 33615 Bielefeld, Germany
| | - Anna-Katharina Müller
- Department of Animal Behaviour, Bielefeld University, Morgenbreede 45, 33615 Bielefeld, Germany
| | - Volkher Looft
- Landesnaturschutzverband Schleswig-Holstein e.V., Burgstraße 4, 24103 Kiel, Germany
| | | | | | | | - Oliver Krone
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, 10315 Berlin, Germany
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7
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Clermont J, Réale D, Lindsay MÈ, Giroux JF. Plasticity, state-dependency, and individual consistency in Canada goose nest defense behavior. Behav Ecol Sociobiol 2019. [DOI: 10.1007/s00265-019-2681-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Offspring defense by an urban raptor responds to human subsidies and ritual animal-feeding practices. PLoS One 2018; 13:e0204549. [PMID: 30372432 PMCID: PMC6205594 DOI: 10.1371/journal.pone.0204549] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 08/15/2018] [Indexed: 11/19/2022] Open
Abstract
There is a growing interest in the behavioural and life history mechanisms that allow animal species to cope with rapidly expanding urban habitats, which impose frequent proximity to humans. A particular case of behavioral bottleneck (i.e. conflicting interests) faced by animals in urban environments is how they will modulate the defence of their offspring against the potential danger represented by humans, an aspect that has received scarce research attention. We examined the nest defense against humans by a dense breeding population of a raptor, the Black Kite Milvus migrans, within the megacity of Delhi (India). Here, kites live on a diet dominated by human waste and meat offered through religiously motivated bird feeding practices. Nest defense levels increased with the number of offspring, and with the progression of the breeding season. Defense also intensified close to ritual-feeding areas and with increasing human waste in the streets, suggesting synergistic effects of food availability, parental investment, personality-boldness and habituation to humans, with consequent attenuation of fear. Thus, the behavioural response to a perceived threat reflected the spatial mosaic of activity of humans in the city streets, their cultural practices of ritual-feeding, and their waste-management. For synurbic species, at the higher-end spectrum of adaptation to an urban life, human cultural practices and attitudes may well be the most defining dimensions of their urban niche. Our results suggest that, after initial urban colonization, animals may continue to adapt to the typically complex, heterogeneous environments of cities through fine-grained behavioural adjustments to human practices and activities.
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10
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Nordell CJ, Wellicome TI, Bayne EM. Flight initiation by Ferruginous Hawks depends on disturbance type, experience, and the anthropogenic landscape. PLoS One 2017; 12:e0177584. [PMID: 28542334 PMCID: PMC5436750 DOI: 10.1371/journal.pone.0177584] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 04/28/2017] [Indexed: 11/18/2022] Open
Abstract
The expansion of humans and their related infrastructure is increasing the likelihood that wildlife will interact with humans. When disturbed by humans, animals often change their behaviour, which can result in time and energetic costs to that animal. An animal's decision to change behaviour is likely related to the type of disturbance, the individual's past experience with disturbance, and the landscape in which the disturbance occurs. In southern Alberta and Saskatchewan, we quantified probability of flight initiation from the nest by Ferruginous Hawks (Buteo regalis) during approaches to nests by investigators. We tested if probability of flight was related to different disturbance types, previous experience, and the anthropogenic landscape in which individual Ferruginous Hawks nested. Probability of flight was related to the type of approach by the investigator, the number of previous visits by investigators, and the vehicular traffic around the nest. Approaches by humans on foot resulted in a greater probability of flight than those in a vehicle. Approaches in a vehicle via low traffic volume access roads were related to increased probability of flight relative to other road types. The number of previous investigator approaches to the nest increased the probability of flight. Overall, we found support that Ferruginous Hawks show habituation to vehicles and the positive reinforcement hypotheses as probability of flight was negatively related to an index of traffic activity near the nest. Our work emphasizes that complex, dynamic processes drive the decision to initiate flight from the nest, and contributes to the growing body of work explaining how responses to humans vary within species.
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Affiliation(s)
- Cameron J. Nordell
- Department of Biological Sciences, University of Alberta, Edmonton, Canada
- * E-mail:
| | | | - Erin M. Bayne
- Department of Biological Sciences, University of Alberta, Edmonton, Canada
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11
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Dubuc-Messier G, Réale D, Perret P, Charmantier A. Environmental heterogeneity and population differences in blue tits personality traits. Behav Ecol 2016; 28:448-459. [PMID: 29622919 PMCID: PMC5873839 DOI: 10.1093/beheco/arw148] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 07/28/2016] [Accepted: 08/05/2016] [Indexed: 11/23/2022] Open
Abstract
Environmental heterogeneity can result in spatial variation in selection pressures that can produce local adaptations. The pace-of-life syndrome hypothesis predicts that habitat-specific selective pressures will favor the coevolution of personality, physiological, and life-history phenotypes. Few studies so far have compared these traits simultaneously across different ecological conditions. In this study, we compared 3 personality traits (handling aggression, exploration speed in a novel environment, and nest defense behavior) and 1 physiological trait (heart rate during manual restraint) across 3 Corsican blue tit (Cyanistes caeruleus) populations. These populations are located in contrasting habitats (evergreen vs. deciduous) and are situated in 2 different valleys 25 km apart. Birds from these populations are known to differ in life-history characteristics, with birds from the evergreen habitat displaying a slow pace-of-life, and birds from the deciduous habitat a comparatively faster pace-of-life. We expected personality to differ across populations, in line with the differences in pace-of-life documented for life-history traits. As expected, we found behavioral differences among populations. Despite considerable temporal variation, birds exhibited lower handling aggression in the evergreen populations. Exploration speed and male heart rate also differed across populations, although our results for exploration speed were more consistent with a phenotypic difference between the 2 valleys than between habitats. There were no clear differences in nest defense intensity among populations. Our study emphasizes the role of environmental heterogeneity in shaping population divergence in personality traits at a small spatial scale.
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Affiliation(s)
- Gabrielle Dubuc-Messier
- Département des Sciences Biologiques, Université du Québec à Montréal, CP-8888 Succursale Centre-ville, Montréal, Québec, Canada and.,Centre d'Écologie Fonctionnelle et Évolutive, Unité Mixte de Recherche CNRS 5175, 1919 Route de Mende, Montpellier Cedex 5, France
| | - Denis Réale
- Département des Sciences Biologiques, Université du Québec à Montréal, CP-8888 Succursale Centre-ville, Montréal, Québec, Canada and
| | - Philippe Perret
- Centre d'Écologie Fonctionnelle et Évolutive, Unité Mixte de Recherche CNRS 5175, 1919 Route de Mende, Montpellier Cedex 5, France
| | - Anne Charmantier
- Département des Sciences Biologiques, Université du Québec à Montréal, CP-8888 Succursale Centre-ville, Montréal, Québec, Canada and.,Centre d'Écologie Fonctionnelle et Évolutive, Unité Mixte de Recherche CNRS 5175, 1919 Route de Mende, Montpellier Cedex 5, France
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12
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Crisologo TL, Bonter DN. Defending the Weak: Parental Defense Peaks When Chick Vulnerability is Greatest in the Herring Gull (Larus argentatus). Ethology 2016. [DOI: 10.1111/eth.12578] [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)
- Taylor L. Crisologo
- Department of Ecology and Evolutionary Biology; Cornell University; Ithaca NY USA
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13
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Gómez-Serrano MÁ, López-López P. Deceiving predators: linking distraction behavior with nest survival in a ground-nesting bird. Behav Ecol 2016. [DOI: 10.1093/beheco/arw157] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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14
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Shew JJ, van der Merwe J, Schauber EM, Tallitsch BK, Nielsen CK. A classic question revisited in red-winged blackbirds: disentangling confounding hypotheses surrounding parental investment theory and nest defense intensity. Behav Ecol Sociobiol 2016. [DOI: 10.1007/s00265-016-2190-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Large increase in nest size linked to climate change: an indicator of life history, senescence and condition. Oecologia 2015; 179:913-21. [DOI: 10.1007/s00442-015-3385-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 06/23/2015] [Indexed: 11/30/2022]
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Effects of the Fukushima Daiichi nuclear accident on goshawk reproduction. Sci Rep 2015; 5:9405. [PMID: 25802117 PMCID: PMC4371089 DOI: 10.1038/srep09405] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 03/03/2015] [Indexed: 11/12/2022] Open
Abstract
Although the influence of nuclear accidents on the reproduction of top predators has not been investigated, it is important that we identify the effects of such accidents because humans are also top predators. We conducted field observation for 22 years and analysed the reproductive performance of the goshawk (Accipiter gentilis fujiyamae), a top avian predator in the North Kanto area of Japan, before and after the accidents at the Fukushima Daiichi nuclear power plant that occurred in 2011. The reproductive performance declined markedly compared with the pre-accident years and progressively decreased for the three post-accident study years. Moreover, it was suggested that these declines were primarily caused by an increase in the air dose rate of radio-active contaminants measured under the nests caused by the nuclear accidents, rather than by other factors. We consider the trends in the changes of the reproductive success rates and suggest that internal exposure may play an important role in the reproductive performance of the goshawk, as well as external exposure.
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