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Zein B, Long JA, Safi K, Kölzsch A, Benitez-Paez F, Wikelski M, Kruckenberg H, Demšar U. Simulating geomagnetic bird navigation using novel high-resolution geomagnetic data. ECOL INFORM 2022. [DOI: 10.1016/j.ecoinf.2022.101689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Henrique EP, Oliveira MA, Paulo DC, Pereira PDC, Dias C, Siqueira LS, Lima CM, Miranda DDA, Rego PS, Araripe J, Melo MAD, Diniz DG, Morais Magalhães NG, Sherry DF, Picanço Diniz CW, Diniz CG. Contrasting migratory journeys and changes in hippocampal astrocyte morphology in shorebirds. Eur J Neurosci 2020; 54:5687-5704. [DOI: 10.1111/ejn.14781] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 04/26/2020] [Accepted: 05/07/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Ediely Pereira Henrique
- Laboratório de Biologia Molecular e Neuroecologia Instituto Federal de Educação Ciência e Tecnologia do Pará, Campus Bragança Bragança Pará Brazil
| | - Marcus Augusto Oliveira
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto Instituto de Ciências Biológicas Universidade Federal do Pará Belém Pará Brazil
| | - Dario Carvalho Paulo
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto Instituto de Ciências Biológicas Universidade Federal do Pará Belém Pará Brazil
| | - Patrick Douglas Corrêa Pereira
- Laboratório de Biologia Molecular e Neuroecologia Instituto Federal de Educação Ciência e Tecnologia do Pará, Campus Bragança Bragança Pará Brazil
| | - Cleyssian Dias
- Curso de Pós‐Graduação em Zoologia Museu Paraense Emílio Goeldi Universidade Federal do Pará Belém Pará Brazil
| | - Lucas Silva Siqueira
- Laboratório de Biologia Molecular e Neuroecologia Instituto Federal de Educação Ciência e Tecnologia do Pará, Campus Bragança Bragança Pará Brazil
| | - Camila Mendes Lima
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto Instituto de Ciências Biológicas Universidade Federal do Pará Belém Pará Brazil
| | - Diego de Almeida Miranda
- Laboratório de Biologia Molecular e Neuroecologia Instituto Federal de Educação Ciência e Tecnologia do Pará, Campus Bragança Bragança Pará Brazil
| | - Péricles Sena Rego
- Instituto de Estudos Costeiros Universidade Federal do Pará Bragança Pará Brazil
| | - Juliana Araripe
- Instituto de Estudos Costeiros Universidade Federal do Pará Bragança Pará Brazil
| | - Mauro André Damasceno Melo
- Laboratório de Biologia Molecular e Neuroecologia Instituto Federal de Educação Ciência e Tecnologia do Pará, Campus Bragança Bragança Pará Brazil
| | - Daniel Guerreiro Diniz
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto Instituto de Ciências Biológicas Universidade Federal do Pará Belém Pará Brazil
- Instituto Evandro Chagas Laboratório de Miscroscopia Eletrônica Belém Pará Brazil
| | - Nara Gyzely Morais Magalhães
- Laboratório de Biologia Molecular e Neuroecologia Instituto Federal de Educação Ciência e Tecnologia do Pará, Campus Bragança Bragança Pará Brazil
| | - David Francis Sherry
- Department of Psychology Advanced Facility for Avian Research University of Western Ontario London ON Canada
| | - Cristovam Wanderley Picanço Diniz
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto Instituto de Ciências Biológicas Universidade Federal do Pará Belém Pará Brazil
| | - Cristovam Guerreiro Diniz
- Laboratório de Biologia Molecular e Neuroecologia Instituto Federal de Educação Ciência e Tecnologia do Pará, Campus Bragança Bragança Pará Brazil
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Mendes de Lima C, Douglas Corrêa Pereira P, Pereira Henrique E, Augusto de Oliveira M, Carvalho Paulo D, Silva de Siqueira L, Guerreiro Diniz D, Almeida Miranda D, André Damasceno de Melo M, Gyzely de Morais Magalhães N, Francis Sherry D, Wanderley Picanço Diniz C, Guerreiro Diniz C. Differential Change in Hippocampal Radial Astrocytes and Neurogenesis in Shorebirds With Contrasting Migratory Routes. Front Neuroanat 2019; 13:82. [PMID: 31680881 PMCID: PMC6798042 DOI: 10.3389/fnana.2019.00082] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 08/28/2019] [Indexed: 12/30/2022] Open
Abstract
Little is known about environmental influences on radial glia-like (RGL) α cells (radial astrocytes) and their relation to neurogenesis. Because radial glia is involved in adult neurogenesis and astrogenesis, we investigated this association in two migratory shorebird species that complete their autumnal migration using contrasting strategies. Before their flights to South America, the birds stop over at the Bay of Fundy in Canada. From there, the semipalmated sandpiper (Calidris pusilla) crosses the Atlantic Ocean in a non-stop 5-day flight, whereas the semipalmated plover (Charadrius semipalmatus) flies primarily overland with stopovers for rest and feeding. From the hierarchical cluster analysis of multimodal morphometric features, followed by the discriminant analysis, the radial astrocytes were classified into two main morphotypes, Type I and Type II. After migration, we detected differential changes in the morphology of these cells that were more intense in Type I than in Type II in both species. We also compared the number of doublecortin (DCX)-immunolabeled neurons with morphometric features of radial glial-like α cells in the hippocampal V region between C. pusilla and C. semipalmatus before and after autumn migration. Compared to migrating birds, the convex hull surface area of radial astrocytes increased significantly in wintering individuals in both C. semipalmatus and C. pusilla. Although to a different extent we found a strong correlation between the increase in the convex hull surface area and the increase in the total number of DCX immunostained neurons in both species. Despite phylogenetic differences, it is of interest to note that the increased morphological complexity of radial astrocytes in C. semipalmatus coincides with the fact that during the migratory process over the continent, the visuospatial environment changes more intensely than that associated with migration over Atlantic. The migratory flight of the semipalmated plover, with stopovers for feeding and rest, vs. the non-stop flight of the semipalmated sandpiper may differentially affect radial astrocyte morphology and neurogenesis.
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Affiliation(s)
- Camila Mendes de Lima
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
| | - Patrick Douglas Corrêa Pereira
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação Ciência e Tecnologia do Pará, Campus Bragança, Bragança, Brazil
| | - Ediely Pereira Henrique
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação Ciência e Tecnologia do Pará, Campus Bragança, Bragança, Brazil
| | - Marcus Augusto de Oliveira
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
| | - Dario Carvalho Paulo
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
| | - Lucas Silva de Siqueira
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação Ciência e Tecnologia do Pará, Campus Bragança, Bragança, Brazil
| | - Daniel Guerreiro Diniz
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil.,Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação Ciência e Tecnologia do Pará, Campus Bragança, Bragança, Brazil
| | - Diego Almeida Miranda
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação Ciência e Tecnologia do Pará, Campus Bragança, Bragança, Brazil
| | - Mauro André Damasceno de Melo
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação Ciência e Tecnologia do Pará, Campus Bragança, Bragança, Brazil
| | - Nara Gyzely de Morais Magalhães
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
| | - David Francis Sherry
- Advanced Facility for Avian Research, Department of Psychology, University of Western Ontario, London, ON, Canada
| | - Cristovam Wanderley Picanço Diniz
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
| | - Cristovam Guerreiro Diniz
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil.,Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação Ciência e Tecnologia do Pará, Campus Bragança, Bragança, Brazil
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5
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Orben RA, O’Connor AJ, Suryan RM, Ozaki K, Sato F, Deguchi T. Ontogenetic changes in at-sea distributions of immature short-tailed albatrosses Phoebastria albatrus. ENDANGER SPECIES RES 2018. [DOI: 10.3354/esr00864] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Carvalho-Paulo D, de Morais Magalhães NG, de Almeida Miranda D, Diniz DG, Henrique EP, Moraes IAM, Pereira PDC, de Melo MAD, de Lima CM, de Oliveira MA, Guerreiro-Diniz C, Sherry DF, Diniz CWP. Hippocampal Astrocytes in Migrating and Wintering Semipalmated Sandpiper Calidris pusilla. Front Neuroanat 2018; 11:126. [PMID: 29354035 PMCID: PMC5758497 DOI: 10.3389/fnana.2017.00126] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 12/05/2017] [Indexed: 01/09/2023] Open
Abstract
Seasonal migratory birds return to the same breeding and wintering grounds year after year, and migratory long-distance shorebirds are good examples of this. These tasks require learning and long-term spatial memory abilities that are integrated into a navigational system for repeatedly locating breeding, wintering, and stopover sites. Previous investigations focused on the neurobiological basis of hippocampal plasticity and numerical estimates of hippocampal neurogenesis in birds but only a few studies investigated potential contributions of glial cells to hippocampal-dependent tasks related to migration. Here we hypothesized that the astrocytes of migrating and wintering birds may exhibit significant morphological and numerical differences connected to the long-distance flight. We used as a model the semipalmated sandpiper Calidris pusilla, that migrates from northern Canada and Alaska to South America. Before the transatlantic non-stop long-distance component of their flight, the birds make a stopover at the Bay of Fundy in Canada. To test our hypothesis, we estimated total numbers and compared the three-dimensional (3-D) morphological features of adult C. pusilla astrocytes captured in the Bay of Fundy (n = 249 cells) with those from birds captured in the coastal region of Bragança, Brazil, during the wintering period (n = 250 cells). Optical fractionator was used to estimate the number of astrocytes and for 3-D reconstructions we used hierarchical cluster analysis. Both morphological phenotypes showed reduced morphological complexity after the long-distance non-stop flight, but the reduction in complexity was much greater in Type I than in Type II astrocytes. Coherently, we also found a significant reduction in the total number of astrocytes after the transatlantic flight. Taken together these findings suggest that the long-distance non-stop flight altered significantly the astrocytes population and that morphologically distinct astrocytes may play different physiological roles during migration.
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Affiliation(s)
- Dario Carvalho-Paulo
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
| | - Nara G de Morais Magalhães
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
| | - Diego de Almeida Miranda
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação Ciência e Tecnologia do Pará, Bragança, Brazil
| | - Daniel G Diniz
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
| | - Ediely P Henrique
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação Ciência e Tecnologia do Pará, Bragança, Brazil
| | - Isis A M Moraes
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação Ciência e Tecnologia do Pará, Bragança, Brazil
| | - Patrick D C Pereira
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação Ciência e Tecnologia do Pará, Bragança, Brazil
| | - Mauro A D de Melo
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação Ciência e Tecnologia do Pará, Bragança, Brazil
| | - Camila M de Lima
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
| | - Marcus A de Oliveira
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
| | - Cristovam Guerreiro-Diniz
- Laboratório de Biologia Molecular e Neuroecologia, Instituto Federal de Educação Ciência e Tecnologia do Pará, Bragança, Brazil
| | - David F Sherry
- Department of Psychology, University of Western Ontario, London, ON, Canada.,Advanced Facility for Avian Research, University of Western Ontario, London, ON, Canada
| | - Cristovam W P Diniz
- Laboratório de Investigações em Neurodegeneração e Infecção no Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
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Padget O, Dell'Ariccia G, Gagliardo A, González-Solís J, Guilford T. Anosmia impairs homing orientation but not foraging behaviour in free-ranging shearwaters. Sci Rep 2017; 7:9668. [PMID: 28851985 PMCID: PMC5575321 DOI: 10.1038/s41598-017-09738-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 07/27/2017] [Indexed: 11/09/2022] Open
Abstract
Shearwaters deprived of their olfactory sense before being displaced to distant sites have impaired homing ability but it is unknown what the role of olfaction is when birds navigate freely without their sense of smell. Furthermore, treatments used to induce anosmia and to disrupt magneto-reception in displacement experiments might influence non-specific factors not directly related to navigation and, as a consequence, the results of displacement experiments can have multiple interpretations. To address this, we GPS-tracked the free-ranging foraging trips of incubating Scopoli's shearwaters within the Mediterranean Sea. As in previous experiments, shearwaters were either made anosmic with 4% zinc sulphate solution, magnetically impaired by attachment of a strong neodymium magnet or were controls. We found that birds from all three treatments embarked on foraging trips, had indistinguishable at-sea schedules of behaviour and returned to the colony having gained mass. However, we found that in the pelagic return stage of their foraging trips, anosmic birds were not oriented towards the colony though coastal navigation was unaffected. These results support the case for zinc sulphate having a specific effect on the navigational ability of shearwaters and thus the view that seabirds consult an olfactory map to guide them across seascapes.
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Affiliation(s)
- O Padget
- Oxford Navigation Group, Department of Zoology, University of Oxford, Oxford, OX1 3PS, Oxfordshire, United Kingdom.
| | - G Dell'Ariccia
- Biodiversity Research Institute (IRBio) & Department of Animal Biology, University of Barcelona, Barcelona, Spain
| | - A Gagliardo
- Department of Biology, University of Pisa, Pisa, Italy
| | - J González-Solís
- Biodiversity Research Institute (IRBio) & Department of Animal Biology, University of Barcelona, Barcelona, Spain
| | - T Guilford
- Oxford Navigation Group, Department of Zoology, University of Oxford, Oxford, OX1 3PS, Oxfordshire, United Kingdom.
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Hippocampal neurogenesis and volume in migrating and wintering semipalmated sandpipers (Calidris pusilla). PLoS One 2017; 12:e0179134. [PMID: 28591201 PMCID: PMC5462419 DOI: 10.1371/journal.pone.0179134] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Accepted: 05/24/2017] [Indexed: 12/13/2022] Open
Abstract
Long distance migratory birds find their way by sensing and integrating information from a large number of cues in their environment. These cues are essential to navigate over thousands of kilometers and reach the same breeding, stopover, and wintering sites every year. The semipalmated sandpiper (Calidris pusilla) is a long-distance migrant that breeds in the arctic tundra of Canada and Alaska and winters on the northeast coast of South America. Its fall migration includes a 5,300-kilometer nonstop flight over the Atlantic Ocean. The avian hippocampus has been proposed to play a central role in the integration of multisensory spatial information for navigation. Hippocampal neurogenesis may contribute to hippocampal function and a variety of factors including cognitive activity, exercise, enrichment, diet and stress influence neurogenesis in the hippocampus. We quantified hippocampal neurogenesis and volume in adult migrating and wintering semipalmated sandpipers using stereological counts of doublecortin (DCX) immunolabeled immature neurons. We found that birds captured in the coastal region of Bragança, Brazil during the wintering period had more DCX positive neurons and larger volume in the hippocampus than individuals captured in the Bay of Fundy, Canada during fall migration. We also estimate the number of NeuN immunolabeled cells in migrating and wintering birds and found no significant differences between them. These findings suggest that, at this time window, neurogenesis just replaced neurons that might be lost during the transatlantic flight. Our findings also show that in active fall migrating birds, a lower level of adult hippocampal neurogenesis is associated with a smaller hippocampal formation. High levels of adult hippocampal neurogenesis and a larger hippocampal formation found in wintering birds may be late occurring effects of long distance migratory flight or the result of conditions the birds experienced while wintering.
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Abstract
Studies of the migration of the eastern North American monarch butterfly (Danaus plexippus) have revealed mechanisms behind its navigation. The main orientation mechanism uses a time-compensated sun compass during both the migration south and the remigration north. Daylight cues, such as the sun itself and polarized light, are processed through both eyes and integrated through intricate circuitry in the brain's central complex, the presumed site of the sun compass. Monarch circadian clocks have a distinct molecular mechanism, and those that reside in the antennae provide time compensation. Recent evidence shows that migrants can also use a light-dependent inclination magnetic compass for orientation in the absence of directional daylight cues. The monarch genome has been sequenced, and genetic strategies using nuclease-based technologies have been developed to edit specific genes. The monarch butterfly has emerged as a model system to study the neural, molecular, and genetic basis of long-distance animal migration.
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Affiliation(s)
- Steven M Reppert
- Department of Neurobiology, University of Massachusetts Medical School, Worcester, Massachusetts 01605; ,
| | - Patrick A Guerra
- Department of Neurobiology, University of Massachusetts Medical School, Worcester, Massachusetts 01605; ,
| | - Christine Merlin
- Department of Biology, Texas A&M University, College Station, Texas 77843;
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Willemoes M, Blas J, Wikelski M, Thorup K. Flexible navigation response in common cuckoos Cuculus canorus displaced experimentally during migration. Sci Rep 2015; 5:16402. [PMID: 26549318 PMCID: PMC4637880 DOI: 10.1038/srep16402] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Accepted: 10/12/2015] [Indexed: 11/09/2022] Open
Abstract
Migrating birds follow innate species-specific migration programs capable of guiding them along complex spatio-temporal routes, which may include several separate staging areas. Indeed, migration routes of common cuckoos Cuculus canorus show little variation between individuals; yet, satellite tracks of 11 experimentally displaced adults revealed an unexpected flexibility in individual navigation responses. The birds compensated for the translocation to unfamiliar areas by travelling toward population-specific staging areas, demonstrating true navigation capabilities. Individual responses varied from travelling toward the first stopover in northern Europe to flying toward the Central-African winter grounds, the latter including several stopovers in unfamiliar areas. Apparently, the cuckoos possess spatial knowledge far beyond their population-specific flyway scale, and make individual decisions likely based on an assessment of perceived gain and cost of alternative route options.
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Affiliation(s)
- Mikkel Willemoes
- Center for Macroecology, Evolution and Climate; Natural History Museum of Denmark; University of Copenhagen; Universitetsparken 15; 2100 København Ø; Denmark
| | - Julio Blas
- Department of Conservation Biology, Estación Biológica de Doñana, CSIC, c/Americo Vespucio, 41092 Sevilla, Spain
| | - Martin Wikelski
- Max Planck Institute for Ornithology, Department of Migration and Immuno-ecology, Am Obstberg 1, D-78315 Radolfzell, Germany.,University of Konstanz, Department of Biology, Universitätsstrasse, D-78457 Konstanz, Germany
| | - Kasper Thorup
- Center for Macroecology, Evolution and Climate; Natural History Museum of Denmark; University of Copenhagen; Universitetsparken 15; 2100 København Ø; Denmark
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Putman NF, Verley P, Endres CS, Lohmann KJ. Magnetic navigation behavior and the oceanic ecology of young loggerhead sea turtles. J Exp Biol 2015; 218:1044-50. [DOI: 10.1242/jeb.109975] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
ABSTRACT
During long-distance migrations, animals navigate using a variety of sensory cues, mechanisms and strategies. Although guidance mechanisms are usually studied under controlled laboratory conditions, such methods seldom allow for navigation behavior to be examined in an environmental context. Similarly, although realistic environmental models are often used to investigate the ecological implications of animal movement, explicit consideration of navigation mechanisms in such models is rare. Here, we used an interdisciplinary approach in which we first conducted lab-based experiments to determine how hatchling loggerhead sea turtles (Caretta caretta) respond to magnetic fields that exist at five widely separated locations along their migratory route, and then studied the consequences of the observed behavior by simulating it within an ocean circulation model. Magnetic fields associated with two geographic regions that pose risks to young turtles (due to cold wintertime temperatures or potential displacement from the migratory route) elicited oriented swimming, whereas fields from three locations where surface currents and temperature pose no such risk did not. Additionally, at locations with fields that elicited oriented swimming, simulations indicate that the observed behavior greatly increases the likelihood of turtles advancing along the migratory pathway. Our findings suggest that the magnetic navigation behavior of sea turtles is intimately tied to their oceanic ecology and is shaped by a complex interplay between ocean circulation and geomagnetic dynamics.
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Affiliation(s)
- Nathan F. Putman
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Philippe Verley
- Institut de Recherche pour le Développement (IRD), UMR 248 MARBEC, Centre de Recherche Halieutique Méditerranéenne et Tropicale, Avenue Jean Monnet, CS 30171, 34203 Séte cedex, France
| | - Courtney S. Endres
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Kenneth J. Lohmann
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA
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Wiltschko R, Wiltschko W. Avian Navigation: A Combination of Innate and Learned Mechanisms. ADVANCES IN THE STUDY OF BEHAVIOR 2015. [DOI: 10.1016/bs.asb.2014.12.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Putman NF, Jenkins ES, Michielsens CGJ, Noakes DLG. Geomagnetic imprinting predicts spatio-temporal variation in homing migration of pink and sockeye salmon. J R Soc Interface 2014; 11:20140542. [PMID: 25056214 PMCID: PMC4233730 DOI: 10.1098/rsif.2014.0542] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Accepted: 06/27/2014] [Indexed: 11/12/2022] Open
Abstract
Animals navigate using a variety of sensory cues, but how each is weighted during different phases of movement (e.g. dispersal, foraging, homing) is controversial. Here, we examine the geomagnetic and olfactory imprinting hypotheses of natal homing with datasets that recorded variation in the migratory routes of sockeye (Oncorhynchus nerka) and pink (Oncorhynchus gorbuscha) salmon returning from the Pacific Ocean to the Fraser River, British Columbia. Drift of the magnetic field (i.e. geomagnetic imprinting) uniquely accounted for 23.2% and 44.0% of the variation in migration routes for sockeye and pink salmon, respectively. Ocean circulation (i.e. olfactory imprinting) predicted 6.1% and 0.1% of the variation in sockeye and pink migration routes, respectively. Sea surface temperature (a variable influencing salmon distribution but not navigation, directly) accounted for 13.0% of the variation in sockeye migration but was unrelated to pink migration. These findings suggest that geomagnetic navigation plays an important role in long-distance homing in salmon and that consideration of navigation mechanisms can aid in the management of migratory fishes by better predicting movement patterns. Finally, given the diversity of animals that use the Earth's magnetic field for navigation, geomagnetic drift may provide a unifying explanation for spatio-temporal variation in the movement patterns of many species.
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Affiliation(s)
- Nathan F Putman
- Department of Fisheries and Wildlife, Oregon State University, 104 Nash Hall, Corvallis, OR 97331, USA
| | - Erica S Jenkins
- Pacific Salmon Commission, 600-1155 Robson Street, Vancouver, British Columbia, Canada V6E IB5
| | | | - David L G Noakes
- Department of Fisheries and Wildlife, Oregon State University, 104 Nash Hall, Corvallis, OR 97331, USA Oregon Hatchery Research Center, 2418 East Fall Creek Road, Alsea, OR 97324, USA
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Mattson MP. Superior pattern processing is the essence of the evolved human brain. Front Neurosci 2014; 8:265. [PMID: 25202234 PMCID: PMC4141622 DOI: 10.3389/fnins.2014.00265] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 08/05/2014] [Indexed: 01/18/2023] Open
Abstract
Humans have long pondered the nature of their mind/brain and, particularly why its capacities for reasoning, communication and abstract thought are far superior to other species, including closely related anthropoids. This article considers superior pattern processing (SPP) as the fundamental basis of most, if not all, unique features of the human brain including intelligence, language, imagination, invention, and the belief in imaginary entities such as ghosts and gods. SPP involves the electrochemical, neuronal network-based, encoding, integration, and transfer to other individuals of perceived or mentally-fabricated patterns. During human evolution, pattern processing capabilities became increasingly sophisticated as the result of expansion of the cerebral cortex, particularly the prefrontal cortex and regions involved in processing of images. Specific patterns, real or imagined, are reinforced by emotional experiences, indoctrination and even psychedelic drugs. Impaired or dysregulated SPP is fundamental to cognitive and psychiatric disorders. A broader understanding of SPP mechanisms, and their roles in normal and abnormal function of the human brain, may enable the development of interventions that reduce irrational decisions and destructive behaviors.
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Affiliation(s)
- Mark P Mattson
- Laboratory of Neurosciences, National Institute on Aging Intramural Research Program Baltimore, MD, USA ; Department of Neuroscience, Johns Hopkins University School of Medicine Baltimore, MD, USA
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15
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Affiliation(s)
- R. A. Holland
- School of Biological Sciences; Queen's University of Belfast; Belfast UK
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16
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Armstrong C, Wilkinson H, Meade J, Biro D, Freeman R, Guilford T. Homing pigeons respond to time-compensated solar cues even in sight of the loft. PLoS One 2013; 8:e63130. [PMID: 23717401 PMCID: PMC3663752 DOI: 10.1371/journal.pone.0063130] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Accepted: 03/27/2013] [Indexed: 12/02/2022] Open
Abstract
The sun has long been thought to guide bird navigation as the second step in a two-stage process, in which determining position using a map is followed by course setting using a compass, both over unfamiliar and familiar terrain. The animal’s endogenous clock time-compensates the solar compass for the sun’s apparent movement throughout the day, and this allows predictable deflections in orientation to test for the compass’ influence using clock-shift manipulations. To examine the influence of the solar compass during a highly familiar navigational task, 24 clock-shifted homing pigeons were precision-tracked from a release site close to and in sight of their final goal, the colony loft. The resulting trajectories displayed significant partial deflection from the loft direction as predicted by either fast or slow clock-shift treatments. The partial deflection was also found to be stable along the entire trajectory indicating regular updating of orientation via input from the solar compass throughout the final approach flight to the loft. Our results demonstrate that time-compensated solar cues are deeply embedded in the way birds orient during homing flight, are accessed throughout the journey and on a remarkably fine-grained scale, and may be combined effectively simultaneously with direct guidance from familiar landmarks, even when birds are flying towards a directly visible goal.
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Affiliation(s)
- Chris Armstrong
- Department of Zoology, University of Oxford, Oxford, United Kingdom
| | - Helen Wilkinson
- Department of Zoology, University of Oxford, Oxford, United Kingdom
- School of Biological and Biomedical Sciences, Durham University, Durham, United Kingdom
| | - Jessica Meade
- Department of Zoology, University of Oxford, Oxford, United Kingdom
- School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, Australia
| | - Dora Biro
- Department of Zoology, University of Oxford, Oxford, United Kingdom
| | - Robin Freeman
- Department of Zoology, University of Oxford, Oxford, United Kingdom
- CoMPLEX, UCL Gower Street, London, United Kingdom
| | - Tim Guilford
- Department of Zoology, University of Oxford, Oxford, United Kingdom
- * E-mail:
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Sensing solutions for collecting spatio-temporal data for wildlife monitoring applications: a review. SENSORS 2013; 13:6054-88. [PMID: 23666132 PMCID: PMC3690045 DOI: 10.3390/s130506054] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2013] [Revised: 04/18/2013] [Accepted: 05/07/2013] [Indexed: 11/17/2022]
Abstract
Movement ecology is a field which places movement as a basis for understanding animal behavior. To realize this concept, ecologists rely on data collection technologies providing spatio-temporal data in order to analyze movement. Recently, wireless sensor networks have offered new opportunities for data collection from remote places through multi-hop communication and collaborative capability of the nodes. Several technologies can be used in such networks for sensing purposes and for collecting spatio-temporal data from animals. In this paper, we investigate and review technological solutions which can be used for collecting data for wildlife monitoring. Our aim is to provide an overview of different sensing technologies used for wildlife monitoring and to review their capabilities in terms of data they provide for modeling movement behavior of animals.
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Holland RA, Helm B. A strong magnetic pulse affects the precision of departure direction of naturally migrating adult but not juvenile birds. J R Soc Interface 2013; 10:20121047. [PMID: 23389901 DOI: 10.1098/rsif.2012.1047] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The mechanisms by which migratory birds achieve their often spectacular navigational performance are still largely unclear, but perception of cues from the Earth's magnetic field is thought to play a role. Birds that possess migratory experience can use map-based navigation, which may involve a receptor that uses ferrimagnetic material for detecting gradients in the magnetic field. Such a mechanism can be experimentally disrupted by applying a strong magnetic pulse that re-magnetizes ferrimagnetic materials. In captivity, this treatment indeed affected bearings of adult but not of naive juvenile birds. However, field studies, which expose birds to various navigational cues, yielded mixed results. Supportive studies were difficult to interpret because they were conducted in spring when all age groups navigate back to breeding areas. The present study, therefore, applied a magnetic pulse treatment in autumn to naturally migrating, radio-tagged European robins. We found that, although overall bearings were seasonally correct, orientation of adult but not juvenile robins was compromised by a pulse. Pulsed adults that departed within 10 days of treatment failed to show significant orientation and deviated more from mean migration direction than adult controls and juveniles. Thus, our data give field-based support for a possible ferrimagnetic map-sense during bird migration.
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Affiliation(s)
- Richard A Holland
- Department for Migration and Immune-ecology, Max Planck Institute for Ornithology, Schlossallee 2, Radolfzell 78315, Germany.
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Wiltschko W, Wiltschko R. Global navigation in migratory birds: tracks, strategies, and interactions between mechanisms. Curr Opin Neurobiol 2012; 22:328-35. [DOI: 10.1016/j.conb.2011.12.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Revised: 12/22/2011] [Accepted: 12/22/2011] [Indexed: 10/14/2022]
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Guilford T, Åkesson S, Gagliardo A, Holland RA, Mouritsen H, Muheim R, Wiltschko R, Wiltschko W, Bingman VP. Migratory navigation in birds: new opportunities in an era of fast-developing tracking technology. ACTA ACUST UNITED AC 2012; 214:3705-12. [PMID: 22031734 DOI: 10.1242/jeb.051292] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Birds have remained the dominant model for studying the mechanisms of animal navigation for decades, with much of what has been discovered coming from laboratory studies or model systems. The miniaturisation of tracking technology in recent years now promises opportunities for studying navigation during migration itself (migratory navigation) on an unprecedented scale. Even if migration tracking studies are principally being designed for other purposes, we argue that attention to salient environmental variables during the design or analysis of a study may enable a host of navigational questions to be addressed, greatly enriching the field. We explore candidate variables in the form of a series of contrasts (e.g. land vs ocean or night vs day migration), which may vary naturally between migratory species, populations or even within the life span of a migrating individual. We discuss how these contrasts might help address questions of sensory mechanisms, spatiotemporal representational strategies and adaptive variation in navigational ability. We suggest that this comparative approach may help enrich our knowledge about the natural history of migratory navigation in birds.
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Affiliation(s)
- Tim Guilford
- Department of Zoology, South Parks Road, Oxford OX1 3PS, UK
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21
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Lohmann KJ, Putman NF, Lohmann CMF. The magnetic map of hatchling loggerhead sea turtles. Curr Opin Neurobiol 2011; 22:336-42. [PMID: 22137566 DOI: 10.1016/j.conb.2011.11.005] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2011] [Revised: 10/31/2011] [Accepted: 11/06/2011] [Indexed: 11/20/2022]
Abstract
Young loggerhead sea turtles (Caretta caretta) from eastern Florida, U.S.A., undertake a transoceanic migration in which they gradually circle the North Atlantic Ocean before returning to the North American coast. Hatchlings in the open sea are guided at least partly by a 'magnetic map' in which regional magnetic fields function as navigational markers and elicit changes in swimming direction at crucial locations along the migratory route. The magnetic map exists in turtles that have never migrated and thus appears to be inherited. Turtles derive both longitudinal and latitudinal information from the Earth's field, most likely by exploiting unique combinations of field inclination and intensity that occur in different geographic areas. Similar mechanisms may function in the migrations of diverse animals.
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Affiliation(s)
- Kenneth J Lohmann
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599, United States
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22
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Thorup K, Holland RA, Tøttrup AP, Wikelski M. Understanding the migratory orientation program of birds: extending laboratory studies to study free-flying migrants in a natural setting. Integr Comp Biol 2011; 50:315-22. [PMID: 21558206 DOI: 10.1093/icb/icq065] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
For many years, orientation in migratory birds has primarily been studied in the laboratory. Although a laboratory-based setting enables greater control over environmental cues, the laboratory-based findings must be confirmed in the wild in free-flying birds to be able to fully understand how birds orient during migration. Despite the difficulties associated with following free-flying birds over long distances, a number of possibilities currently exist for tracking the long distance, sometimes even globe-spanning, journeys undertaken by migrating birds. Birds fitted with radio transmitters can either be located from the ground or from aircraft (conventional tracking), or from space. Alternatively, positional information obtained by onboard equipment (e.g., GPS units) can be transmitted to receivers in space. Use of these tracking methods has provided a wealth of information on migratory behaviors that are otherwise very difficult to study. Here, we focus on the progress in understanding certain components of the migration-orientation system. Comparably exciting results can be expected in the future from tracking free-flying migrants in the wild. Use of orientation cues has been studied in migrating raptors (satellite telemetry) and thrushes (conventional telemetry), highlighting that findings in the natural setting may not always be as expected on the basis of cage-experiments. Furthermore, field tracking methods combined with experimental approaches have finally allowed for an extension of the paradigmatic displacement experiments performed by Perdeck in 1958 on the short-distance, social migrant, the starling, to long-distance migrating storks and long-distance, non-socially migrating passerines. Results from these studies provide fundamental insights into the nature of the migratory orientation system that enables experienced birds to navigate and guide inexperienced, young birds to their species-specific winter grounds.
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Affiliation(s)
- Kasper Thorup
- Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen, Denmark.
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Longitude perception and bicoordinate magnetic maps in sea turtles. Curr Biol 2011; 21:463-6. [PMID: 21353561 DOI: 10.1016/j.cub.2011.01.057] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Revised: 01/08/2011] [Accepted: 01/23/2011] [Indexed: 02/06/2023]
Abstract
Long-distance animal migrants often navigate in ways that imply an awareness of both latitude and longitude. Although several species are known to use magnetic cues as a surrogate for latitude, it is not known how any animal perceives longitude. Magnetic parameters appear to be unpromising as longitudinal markers because they typically vary more in a north-south rather than an east-west direction. Here we report, however, that hatchling loggerhead sea turtles (Caretta caretta) from Florida, USA, when exposed to magnetic fields that exist at two locations with the same latitude but on opposite sides of the Atlantic Ocean, responded by swimming in different directions that would, in each case, help them advance along their circular migratory route. The results demonstrate for the first time that longitude can be encoded into the magnetic positioning system of a migratory animal. Because turtles also assess north-south position magnetically, the findings imply that loggerheads have a navigational system that exploits the Earth's magnetic field as a kind of bicoordinate magnetic map from which both longitudinal and latitudinal information can be extracted.
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Klaassen RHG, Hake M, Strandberg R, Alerstam T. Geographical and temporal flexibility in the response to crosswinds by migrating raptors. Proc Biol Sci 2010; 278:1339-46. [PMID: 20980299 DOI: 10.1098/rspb.2010.2106] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Wind and ocean currents may potentially have important effects on travelling animals, as an animal which does not respond to lateral flow will be drifted from its intended direction of movement. By analysing daily movements of migrating ospreys Pandion haliaetus and marsh harriers Circus aeruginosus, as recorded by satellite telemetry, in relation to global wind data, we showed that these raptors allow on average 47 per cent drift. Furthermore, our analyses revealed significant geographical and temporal variation in the response to crosswinds. During some parts of the migration, the birds drifted and in other parts they compensated or even overcompensated. In some regions, the response of marsh harriers depended on the wind direction. They drifted when the wind came from one side and (over)compensated when the wind came from the opposite side, and this flexible response was different in different geographical regions. These results suggest that migrating raptors modulate their response to crosswinds at different places and times during their travels and show that individual birds use a much more varied repertoire of behavioural responses to wind than hitherto assumed. Our results may also explain why contrasting and variable results have been obtained in previous studies of the effect of wind on bird migration.
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Affiliation(s)
- Raymond H G Klaassen
- Department of Animal Ecology, Lund University, Ecology Building, 22362 Lund, Sweden.
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25
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Reppert SM, Gegear RJ, Merlin C. Navigational mechanisms of migrating monarch butterflies. Trends Neurosci 2010; 33:399-406. [PMID: 20627420 PMCID: PMC2929297 DOI: 10.1016/j.tins.2010.04.004] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2010] [Revised: 04/20/2010] [Accepted: 04/26/2010] [Indexed: 12/12/2022]
Abstract
Recent studies of the iconic fall migration of monarch butterflies have illuminated the mechanisms behind their southward navigation while using a time-compensated sun compass. Skylight cues, such as the sun itself and polarized light, are processed through both eyes and are probably integrated in the brain's central complex, the presumed site of the sun compass. Time compensation is provided by circadian clocks that have a distinctive molecular mechanism and that reside in the antennae. Monarchs might also use a magnetic compass because they possess two cryptochromes that have the molecular capability for light-dependent magnetoreception. Multiple genomic approaches are now being used with the aim of identifying navigation genes. Monarch butterflies are thus emerging as an excellent model organism in which to study the molecular and neural basis of long-distance migration.
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Affiliation(s)
- Steven M Reppert
- Department of Neurobiology, University of Massachusetts Medical School, Worcester, MA 01605, USA.
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