Pyrrolizidine alkaloids: Different acquisition and use patterns in Apocynaceae and Solanaceae feeding ithomiine butterflies (Lepidoptera: Nymphalidae)

dc.creatorTrigo, JR
dc.creatorBrown, KS
dc.creatorWitte, L
dc.creatorHartmann, T
dc.creatorErnst, L
dc.creatorBarata, LES
dc.date1996
dc.dateMAY
dc.date2014-12-16T11:33:54Z
dc.date2015-11-26T17:56:54Z
dc.date2014-12-16T11:33:54Z
dc.date2015-11-26T17:56:54Z
dc.date.accessioned2018-03-29T00:40:30Z
dc.date.available2018-03-29T00:40:30Z
dc.identifierBiological Journal Of The Linnean Society. Academic Press Ltd, v. 58, n. 1, n. 99, n. 123, 1996.
dc.identifier0024-4066
dc.identifierWOS:A1996UN95100005
dc.identifier10.1111/j.1095-8312.1996.tb01663.x
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/58506
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/58506
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/58506
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1291356
dc.descriptionPyrrolizidine alkaloids (PAs) often serve as chemical mediators of plant-herbivore-predator interactions. Butterflies (Danainae and Ithomiinae) and moths (Arctiidae) usually acquire PAs from plant sources (laval host plants, flowers or withered leaves visited by adults - pharmacophagy) and thereby become chemically protected against predators; they also use PAs as pheromone precursors. Study by GC-MS of PAs in three species of Ithomiinae butterflies, their larval host plants and adult alkaloid sources showed three different acquisition patterns: (1) larvae of the primitive Tithorea harmonia sequester PAs from their food plant Prestonia acutifolia (Apocynaceae: Echitoideae), and adults may also acquire these alkaloids from plant sources; (2) larvae of the more derived Aeria olena feed on Prestonia coalita, in whose leaves no PAs were detected. but freshly emerged adults sometimes contain PAs and males intensively seek and sequester these alkaloids in plant sources; and (3) larvae of the still more advanced Mechanitis polymnia feed on several PA-free Solanum species, and adult males sequester the alkaloids from various plant sources. Males and females of all three species contain mostly two PAs, the diastereoisomeric retronecine monoesters lycopsamine and intermedine, stored in the N-oxide form. Larval host plants and adult plant sources showed a large array of PA structures, the most abundant and frequent being lycopsamine and its diastereoisomers intermedine, echinatine, rinderine and indicine, and the deoxy-analogues supinine and amabiline. Bioassays with wild caught and freshly emerged adults suggest that protection against predation by the orb weaving spider Nephila clavipes may be dependent on PA concentration and maybe some spider idiosyncrasies, but freshly emerged Aeria olena without PAs are also liberated by Nephila, suggesting other protective compounds. The role of this spider as a selective pressure for PA acquisition by ithomiines is not clear. (C) 1996 The Linnean Society of London
dc.description58
dc.description1
dc.description99
dc.description123
dc.languageen
dc.publisherAcademic Press Ltd
dc.publisherLondon
dc.publisherInglaterra
dc.relationBiological Journal Of The Linnean Society
dc.relationBiol. J. Linnean Soc.
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectTithorea harmonia
dc.subjectAeria olena
dc.subjectMechanitis polymnia
dc.subjectlycopsamine
dc.subjectintermedine
dc.subjectchemical defence
dc.subjectNephila clavipes
dc.subjectcapillary gas chromatography
dc.subjectmass spectrometry
dc.subjectParsonsia-laevigata
dc.subjectN-oxides
dc.subjectSenecio-vulgaris
dc.subjectDanaine
dc.subjectPlants
dc.subjectUnpalatability
dc.subjectBehavior
dc.subjectAnalogs
dc.subjectSpider
dc.titlePyrrolizidine alkaloids: Different acquisition and use patterns in Apocynaceae and Solanaceae feeding ithomiine butterflies (Lepidoptera: Nymphalidae)
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución