Sequestration of pyrrolizidine alkaloids by larvae of Tellervo zoilus (Lepidoptera: Ithomiinae) and their role in the chemical protection of adults against the spider Nephila maculata (Araneidae)

dc.creatorOrr, AG
dc.creatorTrigo, JR
dc.creatorWitte, L
dc.creatorHartmann, T
dc.date1996
dc.dateJUN
dc.date2014-12-16T11:32:27Z
dc.date2015-11-26T16:28:11Z
dc.date2014-12-16T11:32:27Z
dc.date2015-11-26T16:28:11Z
dc.date.accessioned2018-03-28T23:09:12Z
dc.date.available2018-03-28T23:09:12Z
dc.identifierChemoecology. Springer Basel Ag, v. 7, n. 2, n. 68, n. 73, 1996.
dc.identifier0937-7409
dc.identifierWOS:000208086400002
dc.identifier10.1007/BF01239483
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/75651
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/75651
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/75651
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1269399
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionLife stages of the primitive Australian ithomiine butterfly Tellervo zoilus and its larval host-plant, the apocynaceous vine Parsonsia straminea, were quantitatively assayed for pyrrolizidine alkaloids (PAs). PAs were found in all stages, mainly as N-oxides, being most concentrated in larvae and freshly-emerged adults. Although adults feed at various confirmed PA sources this probably does not compensate for losses, as wild-caught adults had considerably lower concentrations of PAs. The main alkaloid present in both freshly-emerged adults and in leaves of the host-plant was lycopsamine (1b), stored by butterflies in the N-oxide form. Its presence in higher proportion, in relation to intermedine (la), in larvae, pupae and adults of Tellervo in relation to the host-plants suggests the inversion of intermedine to lycopsamine by the insects. No 14-member ring macrocyclic PAs were detected in either food-plant or butterflies. Several other PAs were found in wild-caught adults reflecting visits to other PA sources. PAs were also found in high concentrations in freshly-emerged individuals of the danaine Euploea core bred on Parsonsia straminea. Wild-caught Danaus affinis had high PA levels acquired from adult feeding. Freshly emerged Euploea raised on Ischnocarpus frutescens and Danaus raised on Ischnostemma carnosum (both PA-free) were preyed on by the orb weaving spider Nephila maculata, and showed no PAs. In all cases where PAs were present, most butterflies were liberated, usually cut out of the web unharmed, by Nephila. The spider's response was not closely linked to PA concentration, however, and may also depend on hunger levels and previous experience with PA-containing butterflies. All control and other non-PA containing butterflies were consumed although rejection of some body parts of freshly-emerged Danaus affinis suggests that compounds other than PAs may be involved.
dc.description7
dc.description2
dc.description68
dc.description73
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionDAAD in Germany
dc.descriptionDeutsche Forschungsgemeinschaft
dc.descriptionFonds der Chemische Industrie
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageen
dc.publisherSpringer Basel Ag
dc.publisherBasel
dc.publisherSuíça
dc.relationChemoecology
dc.relationChemoecology
dc.rightsfechado
dc.rightshttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dc.sourceWeb of Science
dc.subjectsequestration of secondary compounds
dc.subjectchemical defense
dc.subjectpyrrolizidine alkaloids
dc.subjectlycopsamine
dc.subjectIthomiinae
dc.subjectTellervo zoilus
dc.subjectDanainae
dc.subjectEuploea core
dc.subjectDanaus affinis
dc.subjectApocynaceae
dc.subjectParsonsia straminea
dc.subjectAraneae
dc.subjectNephila maculata
dc.titleSequestration of pyrrolizidine alkaloids by larvae of Tellervo zoilus (Lepidoptera: Ithomiinae) and their role in the chemical protection of adults against the spider Nephila maculata (Araneidae)
dc.typeArtículos de revistas


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