Chemical defense in harvestmen (Arachnida, Opiliones): Do benzoquinone secretions deter invertebrate and vertebrate predators?

dc.creatorMachado, G
dc.creatorCarrera, PC
dc.creatorPomini, AM
dc.creatorMarsaioli, AJ
dc.date2005
dc.dateNOV
dc.date2014-11-18T07:50:03Z
dc.date2015-11-26T17:47:57Z
dc.date2014-11-18T07:50:03Z
dc.date2015-11-26T17:47:57Z
dc.date.accessioned2018-03-29T00:30:41Z
dc.date.available2018-03-29T00:30:41Z
dc.identifierJournal Of Chemical Ecology. Springer, v. 31, n. 11, n. 2519, n. 2539, 2005.
dc.identifier0098-0331
dc.identifierWOS:000233102500002
dc.identifier10.1007/s10886-005-7611-0
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/63009
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/63009
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/63009
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1288937
dc.descriptionTwo alkylated 1,4-benzoquinones were identified from the defensive secretion produced by the neotropical harvestman Goniosoma longipes (Gonyleptidae). They were characterized as 2,3-dimethyl-1,4-benzoquinone and 2-ethyl-3-methyl-1,4-benzoquinone. We tested the effectiveness of these benzoquinone secretions against several predator types, including invertebrates and vertebrates. Different predators were exposed to the harvestmen's gland secretion or to distilled water in laboratory bioassays. Our results indicate that secretions containing the 1,4-benzoquinones released by G. longipes can be an effective defense against predation, and that the effectiveness of the secretion is dependent on the predator type. The scent gland secretion repelled seven ant species, two species of large wandering spiders, and one frog species, but was not an effective defense against an opossum. Our study also demonstrates that the scent gland secretion of G. longipes can work as a chemical shield preventing the approach of three large predatory ants for at least 10 min. The chemical shield may protect the harvestman against successive attacks of the same ant worker and also allow the harvestman to flee before massive ant recruitment. Our data support the suggestion that chemical defenses may increase survival with some but not all potential predators. This variation in defense effectiveness may result from many interacting factors, including the attack strategy, size, learning ability, and physiology of the predators, as well as the chemical nature of the defensive compounds, type of emission, and amount of effluent released by the prey.
dc.description31
dc.description11
dc.description2519
dc.description2539
dc.languageen
dc.publisherSpringer
dc.publisherDordrecht
dc.publisherHolanda
dc.relationJournal Of Chemical Ecology
dc.relationJ. Chem. Ecol.
dc.rightsfechado
dc.rightshttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dc.sourceWeb of Science
dc.subjectAllomone
dc.subjectantipredator defense
dc.subjectchemical defense
dc.subjectchemical shield
dc.subjectFormicidae
dc.subjectPhilander
dc.subjectpredation
dc.subjectProceratophrys
dc.subject1
dc.subject4-benzoquinones
dc.subjectFood-habits
dc.subjectCavernicolous Harvestman
dc.subjectGoniosoma-spelaeum
dc.subjectSouthern Brazil
dc.subjectSpray Mechanism
dc.subjectPhasmid Insect
dc.subjectGonyleptidae
dc.subjectArthropods
dc.subjectBehavior
dc.subjectMorphology
dc.titleChemical defense in harvestmen (Arachnida, Opiliones): Do benzoquinone secretions deter invertebrate and vertebrate predators?
dc.typeArtículos de revistas


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