Faecal shield chemical defence is not important in larvae of the tortoise beetle Chelymorpha reimoseri (Chrysomelidae: Cassidinae: Stolaini)

dc.creatorBottcher, A
dc.creatorZolin, JP
dc.creatorNogueira-de-Sa, F
dc.creatorTrigo, JR
dc.date2009
dc.dateMAR
dc.date2014-11-19T00:42:52Z
dc.date2015-11-26T17:00:03Z
dc.date2014-11-19T00:42:52Z
dc.date2015-11-26T17:00:03Z
dc.date.accessioned2018-03-28T23:47:49Z
dc.date.available2018-03-28T23:47:49Z
dc.identifierChemoecology. Birkhauser Verlag Ag, v. 19, n. 1, n. 63, n. 66, 2009.
dc.identifier0937-7409
dc.identifierWOS:000264260800009
dc.identifier10.1007/s00049-009-0006-x
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/66726
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/66726
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/66726
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1278371
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThe most frequently investigated defence mechanism among larvae of tortoise beetles is protection by faecal shields, which generally present chemicals that are directly sequestered and/or modified from larval host-plants. In the present work we investigate the tortoise beetle Chelymorpha reimoseri that feeds on the leaves of Ipomoea carnea fistulosa (Convolvulaceae), seeking for the importance of this mechanism to their larvae. We show that 4th instar larvae suffer low predation regardless of the presence of shields in field and laboratory bioassays with ants and chicks. Chloroform extract from larvae without shields provided high protection against predation as shown in bioassays in the field, as well as against chicks, suggesting that C. reimoseri does not rely on the shield for protection. The aqueous extract of the shields did not show activity in such bioassays. The compounds responsible for this protection have yet to be identified, and it remains an open question as to whether they are sequestered from the host plant or de novo biosynthesized. This is the first record of chemical defence in cassidine beetles without the need for faecal shields. These findings indicate that more attention should be paid to chemicals present in the tissues of larvae and/or adults of tortoise beetles; the protective compounds sequestered from host plants or de novo biosynthesized can provide an alternative or complementary strategy against predation in these insects.
dc.description19
dc.description1
dc.description63
dc.description66
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFAPESP [AB 03/04098-3, FNS 99/10154-6, JRT 98/01065-7]
dc.descriptionCNPq [304969/2006-0]
dc.languageen
dc.publisherBirkhauser Verlag Ag
dc.publisherBasel
dc.publisherSuíça
dc.relationChemoecology
dc.relationChemoecology
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectCamponotus crassus
dc.subjectConvolvulaceae
dc.subjectGallus gallus domesticus
dc.subjectIpomoea carnea fistulosa
dc.subjectLeaf beetles
dc.subjectPredation
dc.subjectLeaf Beetles
dc.subjectColeoptera
dc.subjectPredators
dc.subjectPlant
dc.titleFaecal shield chemical defence is not important in larvae of the tortoise beetle Chelymorpha reimoseri (Chrysomelidae: Cassidinae: Stolaini)
dc.typeArtículos de revistas


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