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Morphology and development of the accessory glands in the female genital tract of Gryllus bimaculatus DeGeer and Gryllus assimilis Fabricius Orthoptera Gryllidae Morphologie und Entwicklung der akzessorischen Druesen im Genitaltrakt der Weibchen von Gryllus bimaculatus DeGeer und Gryllus assimilis Fabricius Orthoptera Gryllidae



Morphology and development of the accessory glands in the female genital tract of Gryllus bimaculatus DeGeer and Gryllus assimilis Fabricius Orthoptera Gryllidae Morphologie und Entwicklung der akzessorischen Druesen im Genitaltrakt der Weibchen von Gryllus bimaculatus DeGeer und Gryllus assimilis Fabricius Orthoptera Gryllidae



Linzer Biologische Beitraege 30 Juni; 351: 499-514



In the present study, the morphology and development of the female accessory glands in G. bimaculatus and G. assimilis is investigated in detail and compared with the respective results obtained for the accessory glands of Teleogryllus commodus. The paired glands are posited within the 6th and 7th abdominal segment and join the genital chamber lateral to the terminal papilla. Each gland can be subdivided into three main regions: a basal part (R1) with the orifice, a middle part (R2) including the complex system of ramifications, and an apical part (R3) with the end tubules. While shape and size of the glands differ significantly among the studied crickets, the gland morphology and ultrastructure of single gland cells is marked by great uniformity. Therefore, the epithelium surrounding the gland lumen is composed of a basal lamina, a single cell layer, and a cuticular intima forming spiny and hair-like processes. Each gland cell shows a basal region with elliptic nucleus and intracellular cisternae as well as an apical region with numerous lipid- and protein-forming compartments, cristae-type mitochondria, and microvilli coat. In analogy to T. commodus, the lipophilic secretion passes the intima by simple diffusion. The development of the accessory glands is characterized by a considerable increase of the gland size which is caused by a continuous enlargement of the cell dimensions, but not by mitotic cell propagation.

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Morphologie und Entwicklung der akzessorischen Druesen im Genitaltrakt der Weibchen von Gryllus bimaculatus DeGeer und Gryllus assimilis Fabricius (Orthoptera: Gryllidae). Linzer Biologische Beitraege 30: 499-514, 2003

Morphology and development of the accessory glands in the female genital tract of Gryllus bimaculatus DEGEER and Gryllus assimilis FABRICIUS. Linzer Biologische Beitraege 35(1): 499-514, 30 Juni, 2003

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