Please use this identifier to cite or link to this item: https://biore.bio.bg.ac.rs/handle/123456789/6057
Title: Chemical еcology of cave-dwelling millipedes: defensive secretions of the Typhloiulini (Diplopoda, Julida, Julidae)
Authors: Makarov, Slobodan 
Bodner, Michaela
Reineke, Doris
Vujisić, Ljubodrag
Todosijević, Marina
Antić, Dragan 
Vagalinski, Bojan
Lučić, Luka 
Mitić, Bojan 
Mitov, Plamen
Anđelković, Boban
Pavković-Lučić, Sofija 
Vajs, Vlatka
Tomić, Vladimir 
Raspotnig, Guenther
Keywords: Typhloiulini;;Typhloiulus;;Serboiulus;;Lamellotyphlus;;2-ethyl-1,4-benzoquinone;;Quinone millipedes;;Chemical defense;;Chemosystematics.
Issue Date: 2017
Rank: M21
Publisher: Springer
Journal: Journal of Chemical Ecology
Volume: 43
Issue: 4
Start page: 317
End page: 326
Abstract: 
Cave animals live under highly constant ecological conditions and in permanent darkness, and many evolutionary adaptations of cave-dwellers have been triggered by their specific environment. A similar "cave effect" leading to pronounced chemical interactions under such conditions may be assumed, but the chemoecology of troglobionts is mostly unknown. We investigated the defensive chemistry of a largely cave-dwelling julid group, the controversial tribe "Typhloiulini", and we included some cave-dwelling and some endogean representatives. While chemical defense in juliform diplopods is known to be highly uniform, and mainly based on methyl- and methoxy-substituted benzoquinones, the defensive secretions of typhloiulines contained ethyl-benzoquinones and related compounds. Interestingly, ethyl-benzoquinones were found in some, but not all cave-dwelling typhloiulines, and some non-cave dwellers also contained these compounds. On the other hand, ethyl-benzoquinones were not detected in troglobiont nor in endogean typhloiuline outgroups. In order to explain the taxonomic pattern of ethyl-benzoquinone occurrence, and to unravel whether a cave-effect triggered ethyl-benzoquinone evolution, we classed the "Typhloiulini" investigated here within a phylogenetic framework of julid taxa, and traced the evolutionary history of ethyl-benzoquinones in typhloiulines in relation to cave-dwelling. The results indicated a cave-independent evolution of ethyl-substituted benzoquinones, indicating the absence of a "cave effect" on the secretions of troglobiont Typhloiulini. Ethyl-benzoquinones probably evolved early in an epi- or endogean ancestor of a clade including several, but not all Typhloiulus (basically comprising a taxonomic entity known as "Typhloiulus sensu stricto") and Serboiulus. Ethyl-benzoquinones are proposed as novel and valuable chemical characters for julid systematics.
URI: https://biore.bio.bg.ac.rs/handle/123456789/6057
DOI: 10.1007/s10886-017-0832-1
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