Morphology of the sternal gland in workers of Coptotermes gestroi (Isoptera, Rhinotermitidae)

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dc.contributor.authorCosta-Leonardo, A. M.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:54:41Z
dc.date.available2014-05-20T13:54:41Z
dc.date.issued2006-01-01
dc.description.abstractThe sternal gland is considered the only source of trail pheromones in termites. The morphology of the sternal gland was investigated in workers of Coptotermes gestroi using transmission and scanning electron microscopy. The results showed a small bilobed gland at the anterior part of the fifth abdominal sternite. The cuticular surface of the sternal gland showed a V-shaped structure with two peg sensilla in elevated socket and various campaniform sensilla. Pores and cuticular scale-like protuberances also occur in the glandular area. The ultrastructure showed a gland composed of class I cells and two different types of class 3 cells distinguished by location, different size and electron-density of secretory vesicles. Small class 3 cells (type 1) of the anterior lobe are inserted among class I cells and have weakly electron-dense vesicles associated with mitochondria, glycogen and smooth endoplasmic reticulum. The class 3 cells (type 2) of posterior lobe showed many round electron-lucent vesicles of secretion, abundant free ribosomes and a well-developed Golgi apparatus. Each class 3 cell is connected to the cuticle by a cuticular duct constituted by the receiving canal and the conducting canal. The secretion of class I cells is stored in an inner subcuticular reservoir that is delimited by the microvilli of these cells. This inner reservoir is large and crossed by the campaniform sensilla and ducts of two types of class 3 cells that open outside of the insect body. An exterior reservoir also is present between the fourth and fifth sternite. The complex structure of the sternal gland suggests multicomponents for the trail pheromone in the worker of C gestroi. (c) 2005 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUNESP, Inst Biociencias, Dept Biol, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Biociencias, Dept Biol, BR-13506900 Rio Claro, SP, Brazil
dc.format.extent551-556
dc.identifierhttp://dx.doi.org/10.1016/j.micron.2005.12.006
dc.identifier.citationMicron. Oxford: Pergamon-Elsevier B.V., v. 37, n. 6, p. 551-556, 2006.
dc.identifier.doi10.1016/j.micron.2005.12.006
dc.identifier.issn0968-4328
dc.identifier.urihttp://hdl.handle.net/11449/19586
dc.identifier.wosWOS:000239696200007
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.subjecttermitept
dc.subjectRhinotermitidaept
dc.subjecttrail pheromonept
dc.subjectexocrine glandpt
dc.titleMorphology of the sternal gland in workers of Coptotermes gestroi (Isoptera, Rhinotermitidae)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.orcid0000-0002-8874-5538[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt

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