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An uneasy alliance:a nesting association between aggressive ants and equally fierce social wasps

Insect Science 2020年第1期27卷 122-132页

作者： Pablo Servigne jerome orivel Frederic Azemar James Carpenter Alain Dejean Bruno Corbara Ecologie Sociale CP 231 Universite Libre de Bruxelles(ULB)Campus PlaineBoulevard du TriompheBrusselsBelgium CNRS UMR EcoFoGAgroParisTechCiradINRAUniversite des AntillesUniversite de GuyaneKourouFrance EcoLabf CNRS INPTUPSUniversite de ToulouseToulouseFrance Division of Invertebrate Zoology American Museum of Natural HistoryNew YorkNew YorkUSA CNRS LMGEUniversite Clermont AuvergneClermont-FerrandFrance

Although the Neotropical territorially dominant arboreal ant Azteca chartifex Forel is very aggressive towards any intruder,its populous colonies tolerate the close presence of the fierce polistine wasp Polybia rejecta(F.).In French Guiana,83.33%of the 48 *** nests recorded were found side by side with those of *** nesting association results in mutual protection from predators(i.e.,the wasps protected from army ants;the ants protected from birds).We conducted field studies,laboratorybased behavioral experiments and chemical analyses to elucidate the mechanisms allowing the persistence of this *** to differences in the cuticular profiles of the two species,we eliminated the possibility of chemical ***,analyses of the carton nests did not reveal traces of marking on the *** ant forager flows were not perturbed by extracts from the wasps’Dufour’s and venom glands,we rejected any hypothetical action of repulsive ***,we noted that the wasps"scraped"the surface of the upper part of their nest envelope using their mandibles,likely removing the ants'scent trails,and an experiment showed that ant foragers were perturbed by the removal of their scent *** leads us to use the term"erasure hypothesis."Thus,this nesting association persists thanks to a relative tolerance by the ants towards wasp presence and the behavior of the wasps that allows them to"contain"their associated ants through the elimination of their scent trails,direct attacks,"wing-buzzing"behavior and ejecting the ants.

关键词： Azteca chartifex ants interspecific association mutualism Polybia rejecta wasps scent trail erasure

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