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Carlson, D. A.; Offor, I. I.; Messoussi, Said El; Matsuyama, Kiichi; Mori, Kenji; Jallon, Jean‐Marc

doi:10.1023/a:1020967918594

Cited by 33 publications

(2 citation statements)

References 14 publications

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“…All samples were analysed with and without co-injection with consecutive n-alkane standards for the determination of the Kovats Retention Index (KI). Alkanes and alkenes were identified by their KI (Carlson et al, 1998) and fragmentation patterns (Nelson et al, 1981;Pomonis, 1989;Carlson et al, 1999;Howard, 2001). Alkene identification was confirmed after derivatisation with dimethyl disulphide for determining the double-bond position (Francis & Veland, 1981).…”

Section: Extraction and Identification Of Cuticular Compoundsmentioning

confidence: 99%

Chemical convergence between a guild of facultative myrmecophilous caterpillars and host plants

Lima

Trigo

Kaminski

2020

Ecological Entomology

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1. Ants exert strong selective pressure on herbivorous insects, although some caterpillars can live in symbiosis with them using chemical defensive strategies.2. We investigated the adaptive resemblance of cuticular hydrocarbons (CHCs) in multitrophic systems involving a guild of facultative myrmecophilous caterpillar species (Lepidoptera: Lycaenidae), tending ants (Hymenoptera: Formicidae), and host plants from three families. We hypothesised that the CHCs of the caterpillars would resemble those of their host plants (chemical camouflage).3. We analysed CHCs using gas chromatography/mass spectrometry. Morisita's similarity index (SI) was used to compare CHC profiles of caterpillar species with different types of ant associations (commensal or mutualistic), ants, and host plants.4. We found strong convergence between caterpillars' CHCs and plants, especially for commensal species that do not provide secretion rewards for ants. Moreover, we found unexpected chemical convergence among mutualistic (trophobiotic) caterpillar species that offer caloric reward secretions to ants.5. These results show that the studied caterpillars acquire CHCs through their diet and that they vary according to host plant species and type of ant association (commensalism or mutualism). This 'chemical camouflage' of myrmecophilous caterpillars may have arisen as a defensive strategy allowing coexistence with ants on plants, whereas 'chemical conspicuousness' may have evolved in the context of honest signalling between mutualistic partners.6. We suggest the existence of chemical mimicry among myrmecophilous species, especially between mutualistic caterpillars. Cuticular chemical mixtures can play a key adaptive role in decreasing ant attacks and increasing caterpillar survival in multimodal sensory systems.

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Section: Extraction and Identification Of Cuticular Compoundsmentioning

confidence: 99%

Chemical convergence between a guild of facultative myrmecophilous caterpillars and host plants

Lima

Trigo

Kaminski

2020

Ecological Entomology

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“…The data were analyzed using GC-MS Postrun Analysis for Windows (Shimadzu Corporation) and the chemical compounds were identied based on their mass spectra by comparison with the NIST Library data and with standard alkane solutions for compounds with 9 to 25 and with 21 to 40 carbon atoms (Fluka). The branched alkanes were identied based on comparisons with mass spectral data from Monnin et al 27 and Carlson et al 36,37 The relative abundance of each compound was estimated from the proportion of the peak area of the total ion chromatograms. The amount of each compound in each sample was grouped in n-alkanes, alkenes, and branched alkanes, and their average proportions were compared between treatments (ber vs. ber and hexane).…”

Section: Data Analysesmentioning

confidence: 99%