Development of ovarioles and nurse-cell cytoskeleton in Calliphora erythrocephala Mg (Diptera: Calliphoridae)

• Published in: Cell and tissue biology Vol. 4; no. 2; pp. 192 - 198
• Main Authors: Anan’ina, T. V., Vedernikov, A. E., Khodzhanov, A. E., Stegnii, V. N.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 2010
• Subjects: Biomedical and Life Sciences; Cell Biology; Life Sciences; nurse-cell actin cytoskeleton; polytrophic ovariole; fusome; ring canal
• ISSN: 1990-519X; 1990-5203
• DOI: 10.1134/S1990519X10020094

We have examined ovariole morphology and their development in Calliphora erythrocephala Mg. (Diptera: Calliphoridae). It has been shown that several regions can be distinguished in C. erythrocephala germarium. In these regions, cyst morphogenesis subsequently continues until the separation of the formed egg chamber. The germarium has variously branching fusomes. Two egg chambers develop in the C. erythrocephala vitellarium. The distribution of actin filaments and the formation of ring canals was studied in C. erythrocephala nurse cells. The diameter of the ring canal increases in the germarium zone from 1.5 μm to 14.7 μm during the third and fourth studies of oogenesis. A scheme is presented that illustrates the irregular stretching of actin rollers, which are formed during middle and late oogenesis around ring canals, which joins the proximal and neighboring parts and dramatically increases the size of nurse cells.