Labral gland in soldiers of the neotropical termite Cornitermes cumulans (Isoptera: Termitidae: Syntermitinae)

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dc.contributor.authorCosta-Leonardo, Ana Maria [UNESP]
dc.contributor.authorHaifig, Ives [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2015-03-18T15:53:41Z
dc.date.available2015-03-18T15:53:41Z
dc.date.issued2014-09-01
dc.description.abstractCornitermes cumulans is a termite species of the subfamily Syntermitinae with a nasute mandibulate soldier caste, members of which are morphologically equipped with structures and organs specialized for the defence of the colony. We investigated the labrum of soldiers of C cumulans and described the labral gland, an exocrine structure present in this appendage. The labrum of C. cumulans soldiers presented two distinct regions, the hyaline tip and the proximal region connected to the head. The hyaline tip exhibited a thick cuticle composed of a loose endocuticle involving an epithelium of class 1 cells, which synthesize the glandular product into a subcuticular space that function as a reservoir prior to release the final secretion. The proximal region of the labrum had an epithelium composed of class 1 and class 3 cells, which released the secretion onto both ventral and dorsal surfaces. The ultrastructure showed abundant smooth endoplasmic reticulum and glycogen in the class 1 cells, whereas the class 3 cells had many electron-lucent vesicles that varied in size. We associated the labral gland with the production of toxic substances that may act inside enemy wounds made by the soldiers' mandibles. Other possible functions for the labral secretion are also discussed. (C) 2014 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUNESP Univ Estadual Paulista, Inst Biociencias, Dept Biol, Lab Cupins, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespUNESP Univ Estadual Paulista, Inst Biociencias, Dept Biol, Lab Cupins, BR-13506900 Rio Claro, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação para o Desenvolvimento da UNESP (FUNDUNESP)
dc.description.sponsorshipIdCNPq: 305374/2010-9
dc.description.sponsorshipIdFUNDUNESP: 00245/1990
dc.format.extent39-44
dc.identifierhttp://dx.doi.org/10.1016/j.micron.2014.03.014
dc.identifier.citationMicron. Oxford: Pergamon-elsevier Science Ltd, v. 64, p. 39-44, 2014.
dc.identifier.doi10.1016/j.micron.2014.03.014
dc.identifier.issn0968-4328
dc.identifier.urihttp://hdl.handle.net/11449/116666
dc.identifier.wosWOS:000339142900007
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofMicron
dc.relation.ispartofjcr1.728
dc.relation.ispartofsjr0,624
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectClass 1 cellsen
dc.subjectClass 3 cellsen
dc.subjectLabrumen
dc.subjectScanning microscopyen
dc.subjectUltrastructureen
dc.titleLabral gland in soldiers of the neotropical termite Cornitermes cumulans (Isoptera: Termitidae: Syntermitinae)en
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes3384554771252347[1]
unesp.author.orcid0000-0003-4749-8945[2]
unesp.author.orcid0000-0002-8874-5538[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt

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