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Bounas A, Catsadorakis G, Naziridis T, Bino T, Hatzilacou D, Malakou M, Onmus O, Siki M, Simeonov P, Crivelli AJ. Site fidelity and determinants of wintering decisions in the Dalmatian pelican ( Pelecanus crispus). ETHOL ECOL EVOL 2022. [DOI: 10.1080/03949370.2022.2094471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Anastasios Bounas
- Department of Biological Applications and Technology, University of Ioannina, Ioannina, Greece
| | | | | | - Taulant Bino
- Albanian Ornithological Society (AOS), Tirana, Albania
| | | | - Myrsini Malakou
- Society for the Protection of Prespa, Agios Germanos, Greece
| | - Ortaç Onmus
- Faculty of Sciences, Department of Biology, Natural History Museum — Ege University Bornova, Izmir, Turkey
| | - Mehmet Siki
- Faculty of Sciences, Department of Biology, Natural History Museum — Ege University Bornova, Izmir, Turkey
| | - Pavel Simeonov
- – Bulgaria”, Branta Birding Lodge and Conservation Centre Foundation “Le Balkan , Durankulak, Bulgaria
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Battley PF, Conklin JR, Parody-Merino ÁM, Langlands PA, Southey I, Burns T, Melville DS, Schuckard R, Riegen AC, Potter MA. Interacting Roles of Breeding Geography and Early-Life Settlement in Godwit Migration Timing. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.00052] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Reneerkens J, Versluijs TSL, Piersma T, Alves JA, Boorman M, Corse C, Gilg O, Hallgrimsson GT, Lang J, Loos B, Ntiamoa-Baidu Y, Nuoh AA, Potts PM, Ten Horn J, Lok T. Low fitness at low latitudes: Wintering in the tropics increases migratory delays and mortality rates in an Arctic breeding shorebird. J Anim Ecol 2019; 89:691-703. [PMID: 31584198 PMCID: PMC7078868 DOI: 10.1111/1365-2656.13118] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 09/02/2019] [Indexed: 11/29/2022]
Abstract
Evolutionary theories of seasonal migration generally assume that the costs of longer migrations are balanced by benefits at the non‐breeding destinations. We tested, and rejected, the null hypothesis of equal survival and timing of spring migration for High Arctic breeding sanderling Calidris alba using six and eight winter destinations between 55°N and 25°S, respectively. Annual apparent survival was considerably lower for adult birds wintering in tropical West Africa (Mauritania: 0.74 and Ghana: 0.75) than in three European sites (0.84, 0.84 and 0.87) and in subtropical Namibia (0.85). Moreover, compared with adults, second calendar‐year sanderlings in the tropics, but not in Europe, often refrained from migrating north during the first possible breeding season. During northward migration, tropical‐wintering sanderlings occurred at their final staging site in Iceland 5–15 days later than birds wintering further north or south. Namibia‐wintering sanderlings tracked with solar geolocators only staged in West Africa during southward migration. The low annual survival, the later age of first northward migration and the later passage through Iceland during northward migration of tropical‐wintering sanderlings, in addition to the skipping of this area during northward but not southward migration by Namibia‐wintering sanderlings, all suggest they face issues during the late non‐breeding season in West Africa. Migrating sanderlings defy long distances but may end up in winter areas with poor fitness prospects. We suggest that ecological conditions in tropical West Africa make the fuelling prior to northward departure problematic.
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Affiliation(s)
- Jeroen Reneerkens
- Rudi Drent Chair in Global Flyway Ecology, Conservation Ecology Group, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, The Netherlands
| | - Tom S L Versluijs
- Rudi Drent Chair in Global Flyway Ecology, Conservation Ecology Group, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, The Netherlands
| | - Theunis Piersma
- Rudi Drent Chair in Global Flyway Ecology, Conservation Ecology Group, Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, Groningen, The Netherlands.,Department of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, Utrecht University, Texel, The Netherlands
| | - José A Alves
- DBIO & CESAM - Centre for Environmental and Marine Studies, University of Aveiro, Aveiro, Portugal.,South Iceland Research Centre, University of Iceland, Laugarvatn, Iceland
| | | | | | - Olivier Gilg
- UMR 6249 Chrono-Environnement, Université de Bourgogne Franche-Comté, Besançon, France.,Groupe de Recherche en Ecologie Arctique, Francheville, France
| | | | - Johannes Lang
- Groupe de Recherche en Ecologie Arctique, Francheville, France.,Clinic for Birds, Reptiles, Amphibians and Fish, Working Group for Wildlife Biology, Justus Liebig University Giessen, Giessen, Germany
| | - Bob Loos
- Global Flyway Network, Texel, The Netherlands
| | - Yaa Ntiamoa-Baidu
- Centre for African Wetlands, University of Ghana, Legon, Accra, Ghana.,Department of Animal Biology and Conservation Science, University of Ghana, Legon, Accra, Ghana
| | - Alfred A Nuoh
- Centre for African Wetlands, University of Ghana, Legon, Accra, Ghana
| | | | - Job Ten Horn
- Department of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, Utrecht University, Texel, The Netherlands
| | - Tamar Lok
- Department of Coastal Systems, NIOZ Royal Netherlands Institute for Sea Research, Utrecht University, Texel, The Netherlands
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Gill JA, Alves JA, Gunnarsson TG. Mechanisms driving phenological and range change in migratory species. Philos Trans R Soc Lond B Biol Sci 2019; 374:20180047. [PMID: 31352888 PMCID: PMC6710574 DOI: 10.1098/rstb.2018.0047] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Many migratory systems are changing rapidly in space and time, and these changes present challenges for conservation. Changes in local abundance and site occupancy across species' ranges have raised concerns over the efficacy of the existing protected area networks, while changes in phenology can potentially create mismatches in the timing of annual events with the availability of key resources. These changes could arise either through individuals shifting in space and time or through generational shifts in the frequency of individuals using different locations or on differing migratory schedules. Using a long-term study of a migratory shorebird in which individuals have been tracked through a period of range expansion and phenological change, we show that these changes occur through generational shifts in spatial and phenological distributions, and that individuals are highly consistent in space and time. Predictions of future rates of changes in range size and phenology, and their implications for species conservation, will require an understanding of the processes that can drive generational shifts. We therefore explore the developmental, demographic and environmental processes that could influence generational shifts in phenology and distribution, and the studies that will be needed to distinguish among these mechanisms of change. This article is part of the theme issue ‘Linking behaviour to dynamics of populations and communities: application of novel approaches in behavioural ecology to conservation’.
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Affiliation(s)
- Jennifer A Gill
- School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - José A Alves
- Department of Biology and CESAM-Centre for Environmental and Marine Studies, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Tómas G Gunnarsson
- South Iceland Research Centre, University of Iceland, Lindarbraut 4, 840 Laugarvatn, Iceland
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Bianchini K, Morrissey CA. Polycyclic aromatic hydrocarbon exposure impairs pre-migratory fuelling in captively-dosed Sanderling (Calidris alba). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 161:383-391. [PMID: 29902618 DOI: 10.1016/j.ecoenv.2018.05.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 05/11/2018] [Accepted: 05/14/2018] [Indexed: 06/08/2023]
Abstract
Efficient fuelling is essential for migratory birds because fuel loads and fuelling rates affect individual fitness and survival during migration. Many migrant shorebirds are exposed to oil pollution and its toxic constituents, polycyclic aromatic hydrocarbons (PAHs), at migratory staging sites, which has the potential to interfere with avian refuelling physiology. In this study, we orally dosed shorebirds with environmentally-relevant PAH mixtures to simulate dietary exposure during staging. Forty-nine wild-caught Sanderling (Calidris alba) were exposed to 0 (control), 12.6 (low), 126 (medium), or 1260 (high) μg total PAH/kg body weight/day. Birds were dosed during a 21-day period of autumn pre-migratory fuelling to mimic the typical staging duration of Sanderling. We measured daily changes in mass and fat loads, as well as ethoxyresorufin-O-deethylase (EROD) activity, serum biochemical profiles, and liver mass and lipid content following dosing. All dose groups gained fat and increased in mass (size-corrected) during the study period, with females having a higher average body mass than males. However, mass gain was 3.9, 5.4, and 3.8 times lower in the low, medium, and high dose groups, respectively, relative to controls, and body mass in the medium and high dose groups significantly declined near the end of the experiment. EROD activity showed a dose-dependent increase and was significantly elevated in the high dose group relative to controls. Higher individual EROD activity was associated with reduced serum bile acid and elevated serum creatine kinase concentrations in both sexes, and with elevated serum lipase concentrations in females. These results suggest that PAH exposure in Sanderling can interfere with mechanisms of lipid transport and metabolism, can cause muscle damage, and can lead to reduced overall fat loads that are critical to staging duration, departure decisions, migratory speed, and flight range. Given that many shorebirds migrate thousands of kilometers between the breeding and wintering grounds and frequently aggregate at key staging sites that are subject to contamination, PAH exposure likely represents a significant threat to shorebird migratory success.
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Affiliation(s)
- Kristin Bianchini
- Toxicology Centre, University of Saskatchewan, 44 Campus Drive, Saskatoon, SK, Canada S7N 5B3.
| | - Christy A Morrissey
- Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, SK, Canada S7N 5E2; School of Environment and Sustainability, University of Saskatchewan, 117 Science Place, Saskatoon, SK, Canada S7N 5C8.
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Slavík O, Horký P, Maciak M, Horká P, Langrová I. Diel movement of brown trout, Salmo trutta, is reduced in dense populations with high site fidelity. Ecol Evol 2018; 8:4495-4507. [PMID: 29760890 PMCID: PMC5938464 DOI: 10.1002/ece3.3981] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Revised: 01/21/2018] [Accepted: 02/17/2018] [Indexed: 11/21/2022] Open
Abstract
The movement of individuals within preferred areas is reduced by a high availability of food and information about its distribution, while high number of competitors promotes increased movement. Experienced animals use information about social and physical environment to improve resources exploitation, tended to maintain positions within the preferred areas and reuse the environment that is often referred to as site fidelity. In this study, radio‐telemetry was used to observe the movements of 98 adult brown trout, Salmo trutta, in oligotrophic streams with different population densities; to determine subpopulation site fidelity, 5,195 conspecifics from 14 subpopulations were individually tagged during spring and autumn. During a 7‐year‐long field study, we tested the hypothesis that brown trout individuals from subpopulations with high site fidelity would display lower movement. The hypothesis was supported, and reduced movement was further related to high subpopulation density in association with high slope indicating the physical environment‐influenced movement. The probability of contact between individuals increased with subpopulation site fidelity and subpopulation density. No influence of food abundance on brown trout movement was found. Furthermore, increased body size predicted higher movement (and vice versa). The least movement occurred during the day and during the full moons. Our study tended to show that individuals reused preferred areas and needed less movement to exploit available resources.
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Affiliation(s)
- Ondřej Slavík
- Department of Zoology and Fisheries Faculty of Agrobiology, Food and Natural Resources Czech University of Life Sciences Prague Prague 6 Czech Republic
| | - Pavel Horký
- Department of Zoology and Fisheries Faculty of Agrobiology, Food and Natural Resources Czech University of Life Sciences Prague Prague 6 Czech Republic
| | - Matúš Maciak
- Department of Probability and Mathematical Statistics Faculty of Mathematics and Physics Charles University Prague 8 Czech Republic
| | - Petra Horká
- Institute for Environmental Studies Faculty of Science Charles University Prague 2 Czech Republic
| | - Iva Langrová
- Department of Zoology and Fisheries Faculty of Agrobiology, Food and Natural Resources Czech University of Life Sciences Prague Prague 6 Czech Republic
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Bonnet-Lebrun AS, Phillips RA, Manica A, Rodrigues ASL. Quantifying individual specialization using tracking data: a case study on two species of albatrosses. MARINE BIOLOGY 2018; 165:152. [PMID: 30220735 PMCID: PMC6132544 DOI: 10.1007/s00227-018-3408-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 08/23/2018] [Indexed: 05/19/2023]
Abstract
Many predictive models of spatial and temporal distribution (e.g. in response to climate change or species introductions) assume that species have one environmental niche that applies to all individuals. However, there is growing evidence that individuals can have environmental preferences that are narrower than the species niche. Such individual specialization has mainly been studied in terms of dietary niches, but a recent increase in the availability of individual movement data opens the possibility of extending these analyses to specialisation in environmental preferences. Yet, no study to date on individual specialisation has considered the environmental niche in its multidimensionality. Here we propose a new method for quantifying individual specialisation in multiple dimensions simultaneously. We compare the hypervolumes in n-dimensional environmental niche space of each individual against that of the population, testing for significant differences against a null model. The same method can be applied to a 2-dimensional geographic space to test for site fidelity. We applied this method to test for individual environmental specialisation (across three dimensions: sea surface temperature, eddy kinetic energy, depth) and for site fidelity among satellite-tracked black-browed albatrosses (Thalassarche melanophris) and grey-headed albatrosses (Thalassarche chrysostoma), during chick-rearing at South Georgia. We found evidence for site fidelity in both species and of environmental specialisation among individual grey-headed but not black-browed albatrosses. Specialisation can affect the resilience of populations affected by natural and anthropogenic changes in the environment, and hence has implications for population dynamics and conservation.
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Affiliation(s)
- A.-S. Bonnet-Lebrun
- Department of Zoology, University of Cambridge, Downing Street, Cambridge, CB2 3EJ UK
- CEFE, UMR 5175, CNRS, Université de Montpellier, Université Paul-Valéry Montpellier, EPHE, 34293 Montpellier, France
| | - R. A. Phillips
- British Antarctic Survey, Natural Environment Research Council, Madingley Road, High Cross, Cambridge, CB3 0ET UK
| | - A. Manica
- Department of Zoology, University of Cambridge, Downing Street, Cambridge, CB2 3EJ UK
| | - A. S. L. Rodrigues
- CEFE, UMR 5175, CNRS, Université de Montpellier, Université Paul-Valéry Montpellier, EPHE, 34293 Montpellier, France
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