Publikation:

Effects of Temperature on Circadian Clock and Chronotype : An Experimental Study on a Passerine Bird

Lade...
Vorschaubild

Dateien

lehmann_215373.pdf
lehmann_215373.pdfGröße: 910.25 KBDownloads: 997

Datum

2012

Autor:innen

Spoelstra, Kamiel
Visser, Marcel E.

Herausgeber:innen

Kontakt

ISSN der Zeitschrift

Electronic ISSN

ISBN

Bibliografische Daten

Verlag

Schriftenreihe

Auflagebezeichnung

ArXiv-ID

Internationale Patentnummer

Angaben zur Forschungsförderung

Projekt

Open Access-Veröffentlichung
Open Access Green
Core Facility der Universität Konstanz

Gesperrt bis

Titel in einer weiteren Sprache

Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published

Erschienen in

Chronobiology International. 2012, 29(8), pp. 1062-1071. ISSN 0742-0528. eISSN 1525-6073. Available under: doi: 10.3109/07420528.2012.707159

Zusammenfassung

Daily schedules of many organisms, including birds, are thought to affect fitness. Timing in birds is based on circadian clocks that have a heritable period length, but fitness consequences for individuals in natural environments depend on the scheduling of entrained clocks. This chronotype, i.e., timing of an individual relative to a zeitgeber, results from interactions between the endogenous circadian clock and environmental factors, including light conditions and ambient temperature. To understand contributions of these factors to timing, we studied daily activity patterns of a captive songbird, the great tit (Parus major), under different temperature and light conditions. Birds were kept in a light (L)-dark (D) cycle (12.5 L:11.5 D) at either 8°C or 18°C with ad libitum access to food and water. We assessed chronotype and subsequently tested birds at the same temperature under constant dim light (LLdim) to determine period length of their circadian clock. Thermal conditions were then reversed so that period length was measured under both temperatures. We found that under constant dim light conditions individuals lengthened their freerunning period at higher temperatures by 5.7 ± 2.1 min ( p = .002). Under LD, birds kept at 18°C started activity later and terminated it much earlier in the day than those kept under 8°C. Overall, chronotype was slightly earlier under higher temperature, and duration of activity was shorter. Furthermore, individuals timed their activities consistently on different days under LD and over the two test series under LLdim (repeatability from .38 to .60). Surprisingly, period length and chronotype did not show the correlation that had been previously found in other avian species. Our study shows that body clocks of birds are precise and repeatable, but are, nonetheless, affected by ambient temperature.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
570 Biowissenschaften, Biologie

Schlagwörter

Konferenz

Rezension
undefined / . - undefined, undefined

Forschungsvorhaben

Organisationseinheiten

Zeitschriftenheft

Zugehörige Datensätze in KOPS

Zitieren

ISO 690LEHMANN, Marina, Kamiel SPOELSTRA, Marcel E. VISSER, Barbara HELM, 2012. Effects of Temperature on Circadian Clock and Chronotype : An Experimental Study on a Passerine Bird. In: Chronobiology International. 2012, 29(8), pp. 1062-1071. ISSN 0742-0528. eISSN 1525-6073. Available under: doi: 10.3109/07420528.2012.707159
BibTex
@article{Lehmann2012-10Effec-21537,
  year={2012},
  doi={10.3109/07420528.2012.707159},
  title={Effects of Temperature on Circadian Clock and Chronotype : An Experimental Study on a Passerine Bird},
  number={8},
  volume={29},
  issn={0742-0528},
  journal={Chronobiology International},
  pages={1062--1071},
  author={Lehmann, Marina and Spoelstra, Kamiel and Visser, Marcel E. and Helm, Barbara}
}
RDF
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/21537">
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-02-07T08:47:36Z</dcterms:available>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dc:contributor>Spoelstra, Kamiel</dc:contributor>
    <dcterms:abstract xml:lang="eng">Daily schedules of many organisms, including birds, are thought to affect fitness. Timing in birds is based on circadian clocks that have a heritable period length, but fitness consequences for individuals in natural environments depend on the scheduling of entrained clocks. This chronotype, i.e., timing of an individual relative to a zeitgeber, results from interactions between the endogenous circadian clock and environmental factors, including light conditions and ambient temperature. To understand contributions of these factors to timing, we studied daily activity patterns of a captive songbird, the great tit (Parus major), under different temperature and light conditions. Birds were kept in a light (L)-dark (D) cycle (12.5 L:11.5 D) at either 8°C or 18°C with ad libitum access to food and water. We assessed chronotype and subsequently tested birds at the same temperature under constant dim light (LLdim) to determine period length of their circadian clock. Thermal conditions were then reversed so that period length was measured under both temperatures. We found that under constant dim light conditions individuals lengthened their freerunning period at higher temperatures by 5.7 ± 2.1 min ( p = .002). Under LD, birds kept at 18°C started activity later and terminated it much earlier in the day than those kept under 8°C. Overall, chronotype was slightly earlier under higher temperature, and duration of activity was shorter. Furthermore, individuals timed their activities consistently on different days under LD and over the two test series under LLdim (repeatability from .38 to .60). Surprisingly, period length and chronotype did not show the correlation that had been previously found in other avian species. Our study shows that body clocks of birds are precise and repeatable, but are, nonetheless, affected by ambient temperature.</dcterms:abstract>
    <dspace:hasBitstream rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/21537/2/lehmann_215373.pdf"/>
    <dc:creator>Visser, Marcel E.</dc:creator>
    <dcterms:title>Effects of Temperature on Circadian Clock and Chronotype : An Experimental Study on a Passerine Bird</dcterms:title>
    <dc:contributor>Helm, Barbara</dc:contributor>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/21537"/>
    <dc:creator>Lehmann, Marina</dc:creator>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2013-02-07T08:47:36Z</dc:date>
    <dc:contributor>Lehmann, Marina</dc:contributor>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:creator>Spoelstra, Kamiel</dc:creator>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:creator>Helm, Barbara</dc:creator>
    <dcterms:hasPart rdf:resource="https://kops.uni-konstanz.de/bitstream/123456789/21537/2/lehmann_215373.pdf"/>
    <dcterms:issued>2012-10</dcterms:issued>
    <dcterms:bibliographicCitation>Chronobiology International ; 29 (2012), 8. - S. 1062-1071</dcterms:bibliographicCitation>
    <dc:rights>terms-of-use</dc:rights>
    <dc:contributor>Visser, Marcel E.</dc:contributor>
    <dc:language>eng</dc:language>
  </rdf:Description>
</rdf:RDF>

Interner Vermerk

xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter

Kontakt
URL der Originalveröffentl.

Prüfdatum der URL

Prüfungsdatum der Dissertation

Finanzierungsart

Kommentar zur Publikation

Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Ja
Begutachtet
Diese Publikation teilen