Termite nests often are referred to as the most elaborate constructions of animals. However, some termite species do not build a nest at all and instead found colonies inside the nests of other termites. Since these so-called inquilines do not need to be in direct contact with the host population, the two colonies usually live in separate parts of the nest. Adaptations of both the inquiline and its host are likely to occur to maintain the spatial exclusion and reduce the costs of potential conflicts. Among them, mutual avoidance, based on chemical cues, is expected. We investigated chemical aspects of cohabitation between Constrictotermes cavifrons (Nasutitermitinae) and its obligatory inquiline Inquilinitermes inquilinus (Termitinae). Inquiline soldiers produce in their frontal glands a blend of wax esters, consisting of the C12 alcohols (3Z)-dodec enol, (3Z,6Z)-dodecadienol, and dodecanol, esterified with different fatty acids. The C12 alcohols appear to be cleaved gradually from the wax esters, and they occur in the frontal gland, in soldier headspace, and in the walls of the inquiline part of the nest. Electrophysiological experiments revealed that (3Z)-dodecenol and (3Z,6Z)-dodecadienol are perceived by workers of both species. Bioassays indicated that inquiline soldier heads, as well as the two synthetic compounds, are attractive to conspecific workers and elicit an arresting behavior, while host soldiers and workers avoid these chemicals at biologically relevant amounts. These observations support the hypothesis that chemically mediated spatial separation of the host and the inquiline is an element of a conflict-avoidance strategy in these species.

Departamento de Ecologia Universidade Federal de Sergipe Sergipe Brazil

Faculty of Science Charles University Prague Prague Czech Republic

Institute of Organic Chemistry and Biochemistry v v i Academy of Sciences of the Czech Republic Prague Czech Republic

Institute of Research for Development Sorbonne Universités iEES Paris U 242 Bondy France

Université Paris 13 Sorbonne Paris Cité LEEC EA 4443 Villetaneuse France

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Biol Rev Camb Philos Soc. 2011 Nov;86(4):836-52 PubMed

Proc Biol Sci. 1991 Oct 22;246(1315):25-9 PubMed

PLoS One. 2014 Jan 21;9(1):e85315 PubMed

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J Lipid Res. 2012 Jan;53(1):204-13 PubMed

J Insect Physiol. 2015 Dec;83:8-14 PubMed

J Chem Ecol. 2007 Oct;33(10):1960-77 PubMed

J Insect Physiol. 2001 Apr;47(4-5):445-53 PubMed

Proc Natl Acad Sci U S A. 1977 May;74(5):2072-5 PubMed

Naturwissenschaften. 2004 Jan;91(1):34-9 PubMed

J Insect Physiol. 2010 Sep;56(9):1012-21 PubMed

PLoS One. 2013 Jun 21;8(6):e66535 PubMed

J Chem Ecol. 2012 May;38(5):566-75 PubMed

Arthropod Struct Dev. 2008 May;37(3):168-85 PubMed

J Insect Physiol. 2009 Aug;55(8):751-7 PubMed

PLoS One. 2014 Mar 26;9(3):e90906 PubMed

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