Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 408715
Title Temperature-induced plasticity in membrane and storage lipid composition: Thermal reaction norms across five different temperatures
Author(s) Dooremalen, C. van; Koekkoek, J.; Ellers, J.
Source Journal of Insect Physiology 57 (2011)2. - ISSN 0022-1910 - p. 285 - 291.
Department(s) PRI BIOINT Entomology & Virology
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) fatty-acid-composition - orchesella-cincta collembola - homeoviscous adaptation - stress resistance - cold-acclimation - life-history - populations - physiology - evolution - responses
Abstract Temperature is a key environmental factor inducing phenotypic plasticity in a wide range of behavioral, morphological, and life history traits in ectotherms. The strength of temperature-induced responses in fitness-related traits may be determined by plasticity of the underlying physiological or biochemical traits. Lipid composition may be an important trait underlying fitness response to temperature, because it affects membrane fluidity as well as availability of stored energy reserves. Here, we investigate the effect of temperature on lipid composition of the springtail Orchesella cincta by measuring thermal reaction norms across five different temperatures after four weeks of cold or warm acclimation. Fatty acid composition in storage and membrane lipids showed a highly plastic response to temperature, but the responses of single fatty acids revealed deviations from the expectations based on HVA theory. We found an accumulation of C18:2n6 and C18:3n3 at higher temperatures and the preservation of C20:4n6 across temperatures, which is contrary to the expectation of decreased unsaturation at higher temperatures. The thermal response of these fatty acids in O. cincta differed from the findings in other species, and therefore shows there is interspecific variation in how single fatty acids contribute to HVA. Future research should determine the consequences of such variation in terms of costs and benefits for the thermal performance of species.
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