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

Title data

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

Further data

Item Type:	Article in a journal
Additional notes (visible to public):	BAYCEER124749 BAYCEER124751
Keywords:	Herbivore Larval Development, Temperature,
DDC Subjects:	500 Science 500 Science > 500 Natural sciences 500 Science > 570 Life sciences, biology 500 Science > 580 Plants (Botany)
Institutions of the University:	Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology Research Institutions > Central research institutes > Bayreuth Center of Ecology and Environmental Research- BayCEER Research Institutions > Central research institutes > Institute of African Studies - IAS Service Facilities > Ökologisch-Botanischer Garten Faculties Research Institutions Research Institutions > Central research institutes Service Facilities
Language:	German
Originates at UBT:	Yes
Date Deposited:	29 Jan 2016 11:31
Last Modified:	22 Jun 2020 06:57
URI:	https://epub.uni-bayreuth.de/id/eprint/2674

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