Journal ArticleDOI
Ultrastructure de la glande de la spermathèque chez Phosphuga atrata L. (Coleoptera Silphidae)
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TLDR
The spermathecal accessory gland in the female of Phosphuga atrata (Silphidae), exhibits a special structure which is due to the presence of a cuticular intima lining the lumen.Abstract:
Chez les Silphes et en particulier chez Phosphuga atrata, la glande de la spermatheque presente une structure particuliere liee a la presence d'une intima cuticulaire tapissant la lumiere de la glande. Elle comporte trois types cellulaires: les cellules secretrices, les cellules de l'epithelium sous-cuticulaire et les cellules-manchons. Les cellules secretrices de grande taille contiennent une invagination de la membrane cytoplasmique formant une «vacuole» extracellulaire bordee de microvillosites. Dans cette vacuole plonge l'extremite, differenciee en ampoule poreuse, d'un canalicule de nature cuticulaire, qui vehicule la secretion jusqu'a la lumiere de la glande. Le canalicule est elabore par une cellule-manchon qui l'accompagne sur toute sa longueur sauf a son extremite intravacuolaire. Ce type de glande, qui se retrouve chez de nombreux Insectes, y assurant des fonctions diverses (secretion odorifique, secretion de defense, secretion spermale, etc.), est susceptible de nombreuses variations.read more
Citations
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Journal ArticleDOI
'Milk' secretion for embryogenesis in a viviparous cockroach.
Barbara Stay,Angela C. Coop +1 more
TL;DR: The brood sac of viviparous Diploptera punctata is a typical insect integumentary gland which secretes a ‘milk’ containing protein and carbohydrate to nourish the developing embryos, but following parturition these parameters fall markedly, and the secretory cells decrease their mass by autophagic regression.
Journal ArticleDOI
The importance of the spermathecal duct in bumblebees.
Eric Schoeters,Johan Billen +1 more
TL;DR: The comparatively increased spermathecal duct length of bumblebees may increase the retention time of sperm inside the lumen, and the presence of high glycogen content in the cells lining the duct of queens probably serves as an energy source for the sperm.
Journal ArticleDOI
The ultrastructure of the female accessory gland, the cement gland, in the insect Rhodnius prolixus.
Donald Lococo,Erwin Huebner +1 more
TL;DR: The cement gland of Rhodnius prolixus is an epidermally derived tubular gland consisting of a distal synthetic region and a proximal muscular duct region that reveals the secretion as proteinaceous.
Journal ArticleDOI
Ultrastructure of the Accessory Glands in Female Genitalia of Pholcus phalangioides(Fuesslin, 1775) (Pholcidae; Araneae)
TL;DR: Pholcus phalangioides does not possess receptacular seminis; it is considered to serve primarily as a matrix for sperm storage, i.e. to keep the spermatozoa in a fixed position.
Journal ArticleDOI
Structure of Spermatheca, Sperm Dynamics, and Associated Bacteria in Formosan Subterranean Termite (Isoptera: Rhinotermitidae)
Asiiok Raina,Charles Murphy,Chistopher Florane,Kelley S. Williams,Yong Ihl Park,Bruce F. Ingber +5 more
TL;DR: Primary reproductives of the Formosan subterranean termite, Coptotermes formosanus Shiraki (Isoptera: Rhinotermitidae), complete their first reproductive cycle in ≈60 d after nest formation, indicating that the pairs may not be mating after day 40.
References
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Journal ArticleDOI
THE USE OF LEAD CITRATE AT HIGH pH AS AN ELECTRON-OPAQUE STAIN IN ELECTRON MICROSCOPY
TL;DR: The stain reported here differs from previous alkaline lead stains in that the chelating agent, citrate, is in sufficient excess to sequester all lead present, and is less likely to contaminate sections.
Journal ArticleDOI
The Cytochemical staining and measurement of protein with mercuric bromphenol blue
TL;DR: The mercuric bromphenol blue reaction as used for development of protein spots on filter paper has been found to be applicable to the cytological staining of proteins, allowing good differentiation of structures often difficult to observe.
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