The nasus gland: A new gland in soldiers of Angularitermes (Termitidae, Nasutitermitinae)

Autor(es)

Sobotnik, Jan ; Bourguignon, Thomas ; Carrijo, Tiago F. ; Bordereau, Christian ; Robert, Alain ; Krizkova, Barbora ; Constantini, Joice P. ; Cancello, Eliana M.

• Tipo de documento: Artigo Científico
• Fonte: ARTHROPOD STRUCTURE & DEVELOPMENT; v. 44, n. 5, p. 6-pg., 2015-09-01.

Resumo

Termites have developed many exocrine glands, generally dedicated to defence or communication. Although a few of these glands occur in all termite species, or represent synapomorphies of larger clades, others are morphological innovations of a single species, or a few related species. Here, we describe the nasus gland, a new gland occurring at the base of the nasus of Angularitermes soldiers. The nasus gland is composed of class 1, 2, and 3 secretory cells, a rare combination that is only shared by the sternal and tergal glands of some termites and cockroaches. The ultrastructural observations suggest that the secretion is produced by class 2 and 3 secretory cells, and released mostly by class 3 cells. The base of the nasus has a rough appearance due to numerous pits bearing openings of canals conducting the secretion from class 3 secretory cells to the exterior. We tentatively assign a defensive function to the nasus gland, although further research is needed to confirm this function. Although the gland is described only from species of Angularitermes, other genera of Nasutitermitinae also present a rough nasus base, suggesting the presence of a similar, possibly homologous, gland. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 13/03767-0 - Análise filogeográfica do complexo Heterotermes tenuis (Hagen, 1858) (Isoptera, Rhinotermitidae)
• Beneficiário: Tiago Fernandes Carrijo
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/20068-9 - Análises filogeográficas de duas espécies de cupins (Isoptera) neotropicais com diferentes biologias
• Beneficiário: Eliana Marques Cancello
• Modalidade de apoio: Auxílio à Pesquisa - Regular