How to tackle chemical communication? Relative proportions versus semiquantitative determination of compounds in lizard chemical secretions

Ecology and Evolution
Roberto García-RoaJosé Martín

Abstract

Knowledge about chemical communication in some vertebrates is still relatively limited. Squamates are a glaring example of this, even when recent evidences indicate that scents are involved in social and sexual interactions. In lizards, where our understanding of chemical communication has considerably progressed in the last few years, many questions about chemical interactions remain unanswered. A potential reason for this is the inherent complexity and technical limitations that some methodologies embody when analyzing the compounds used to convey information. We provide here a straightforward procedure to analyze lizard chemical secretions based on gas chromatography coupled to mass spectrometry that uses an internal standard for the semiquantification of compounds. We compare the results of this method with those obtained by the traditional procedure of calculating relative proportions of compounds. For such purpose, we designed two experiments to investigate if these procedures allowed revealing changes in chemical secretions 1) when lizards received previously a vitamin dietary supplementation or 2) when the chemical secretions were exposed to high temperatures. Our results show that the procedure based on relative propor...Continue Reading

References

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Sep 18, 2017·Journal of Chemical Ecology·Simon BaeckensRaoul Van Damme

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Citations

Apr 22, 2020·The Journal of Animal Ecology·Colin M DonihueSimon Baeckens

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