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Herbivore Larval Development at Low Springtime Temperatures: The Importance of Short Periods of Heating in the Field

Titelangaben

Müller, Esther ; Obermaier, Elisabeth:
Herbivore Larval Development at Low Springtime Temperatures: The Importance of Short Periods of Heating in the Field.
In: Psyche. Bd. 2012 (2012) . - Article ID 345932.
ISSN 0033-2615
DOI: 10.1155/2012/345932

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Abstract

Temperature has been shown to play an important role in the life cycles of insects. Early season feeders in Palaearctic regions profit by the high nutritional quality of their host plants early in the year, but face the problem of having to develop at low average springtime temperatures. This study examines the influence of short periods of heating in the field on larval development and on mortality with the model system Galeruca tanaceti L. (Coleoptera: Chrysomelidae), an early season feeder, that hatches at low springtime temperatures. Field and laboratory experiments under different constant and variable temperature regimes were performed. While in the field, the average daily temperature was close to the lower developmental threshold of the species of 10.9◦C; maximum temperatures of above 30◦C were sometimes reached. Larvae developed significantly faster, and pupae were heavier, in the field and in an assay with short periods of heating than at the same average temperature under constant conditions in the laboratory.We conclude that larvae profit substantially from short periods of heating and temperature variation in the field and that intervals of high temperature enable insect survival and exploitation of nutrient-rich food resources at early times in the season.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Zusätzliche Informationen (öffentlich sichtbar): BAYCEER124749
BAYCEER124751
Keywords: Herbivore Larval Development, Temperature,
DOI der Veröffentlichung: 10.1155/2012/345932
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik
500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften
500 Naturwissenschaften und Mathematik > 570 Biowissenschaften; Biologie
500 Naturwissenschaften und Mathematik > 580 Pflanzen (Botanik)
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Forschungseinrichtungen > Forschungszentren > Institut für Afrikastudien - IAS
Serviceeinrichtungen > Ökologisch-Botanischer Garten
Fakultäten
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Serviceeinrichtungen
Sprache: Deutsch
Titel an der UBT entstanden: Ja
Eingestellt am: 29 Jan 2016 11:31
Letzte Änderung: 29 Jan 2016 11:31
URI: https://epub.uni-bayreuth.de/id/eprint/2674