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Cuticular hydrocarbon profiles differ between ant body parts:implications for communication and our understanding of CHC diffusion

引用

Current Zoology 2021年第5期67卷 531-540页

作者： Philipp P.SPRENGER lisa j.gerbes jacqueline SAHM Florian MENZEL Institute of Organismic and Molecular Evolution(iomE) Johannes Gutenberg-University MainzHanns-Dieter Husch-Weg 15Mainz55128Germany Department of Evolutionary Animal Ecology University of BayreuthUniversitatsstraße 30Bayreuth95477Germany Senckenberg Research Institute Senckenberganlage 2560325 Frankfurt am MainGermany

Insect cuticular hydrocarbons(CHCs)serve as communication signals and protect against *** form complex blends of up to 150 different *** to differences in molecular packing,CHC classes differ in melting *** is especially important in social insects like ants,which use CHCs to communicate within the colony and to recognize *** recognition models often assume a homogenous colony odor,where CHCs are collected,mixed,and redistributed in the postpharyngeal gland(PPG).Via diffusion,recognition cues should evenly spread over the body ***,CHC composition should be similar across body parts and in the *** test this,we compared CHC composition among whole-body extracts,PPG,legs,thorax,and gaster,across 17 ant species from 3 *** CHC composition differed between body parts,with consistent patterns across species and CHC ***-melting CHC classes were most abundant in the *** contrast,whole body,gaster,thorax,and legs had increasing proportions of CHC classes with higher melting *** CHC variation was highest for rather solid,late-melting CHC classes,suggesting that CHCs differ in their diffusion rates across the body *** results show that body parts strongly differ in CHC composition,either being rich in rather solid,late-melting,or rather liquid,early-melting *** implies that recognition cues are not homogenously present across the insect ***,the unequal diffusion of different CHCs represents a biophysical mechanism that enables caste differences despite continuous CHC exchange among colony members.

关键词： nestmate recognition Formicidae eusocial insects melting temperature cuticle regionalization pheromones

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