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J Morphol

Title:		Ultrastructure of posterior sternal glands of Macrotermes annandalei (Silvestri): new members of the sexual glandular set found in termites (Insecta)
Author(s):		Quennedey A; Peppuy A; Courrent A; Robert A; Everaerts C; Bordereau C;
Address:		"UMR CNRS 5548 Developpement, Communication Chimique, Universite de Bourgogne, 21000 Dijon, France. andre.quennedey@u-bourgogne.fr"
Journal Title:		J Morphol
Year:		2004
Volume:		262
Issue:		3
Page Number:		683 - 691
DOI:		10.1002/jmor.10185
ISSN/ISBN:		0362-2525 (Print) 0022-2887 (Linking)
Abstract:		"In female alates of Macrotermes annandalei, two types of abdominal glands are involved in the secretion of sex pheromone. Tergal glands are found at the anterior margin of tergites 6-10 and posterior sternal glands (PSGs) are located at the anterior margin of sternites 6-7. The cytological features of both types of glands are quite similar. The fine structural organization of PSGs is studied more precisely and described for the first time. The glandular cuticle is pitted with narrow apertures corresponding to the openings of numerous subcuticular pouches. Several Class 3 glandular units open in each pouch. One canal cell and one secretory cell make an individual glandular unit. The canal cell is enlarged apically and is connected with the other canal cells to form a common pouch. Based on the structural features found in these glands, we propose a common secretory process for PSGs and tergal glands. During the physiological maturation of alates inside the nest, secretory vesicles amass in the cytoplasm of secretory cells, while large intercellular spaces collapse the cuticular pouches. At the time of dispersal flight, pouches are filled with the content of secretory vesicles while intercellular spaces are sharply reduced. After calling behavior, no secretion remains in the glands and pouches collapse again, while secretory cells are drastically reduced in size. The structure and the secretory processes of PSGs and tergal glands are compared to those of abdominal sexual glands known in termites"
Keywords:		Abdomen/anatomy & histology Animals Female Isoptera/physiology/*ultrastructure Phylogeny Scent Glands/metabolism/*ultrastructure Sex Attractants/metabolism;
Notes:		"MedlineQuennedey, Andre Peppuy, Alexis Courrent, Annie Robert, Alain Everaerts, Claude Bordereau, Christian eng Comparative Study 2004/10/16 J Morphol. 2004 Dec; 262(3):683-91. doi: 10.1002/jmor.10185"