Extrachromosomal DNA and the origin of oocytes in the telotrophic-meroistic ovary ofCreophilus maxillosus (L.) (Staphylinidae, Coleoptera-Polyphaga)
- 1 January 1977
- journal article
- research article
- Published by Springer Nature in Wilhelm Roux' Archiv für Entwicklungsmechanik der Organismen
- Vol. 183 (4), 351-368
- https://doi.org/10.1007/bf00848463
Abstract
The development of the telotrophic ovary in the Staphylinid beetle,Creophilus maxillosus was examined. Cells, termed chordoblasts were identified in the germarium of 1-day-old pupae. Each of the chordoblasts undergoes a series of synchronous mitoses. Owing to the precise control of the cleavage plane, which is vertical to the long axis of the ovariole, each of the chordoblasts gives rise to a linear chain of sibling chordocytes. Extra DNA synthesis within each sibling string is usually limited to the most posterior chordocyte only, this being an oocyte progenitor. Divisions of the oocyte progenitor are differential mitoses in which the extra DNA material is transported preferentially towards the posterior pole of the spindle. As extra DNA synthesis and preferential segregation of this material result in gradual increase of this DNA in the nuclei of oocyte progenitors, cytokinesis of these cells becomes highly unequal, the larger of the two cells produced at each differential mitosis being as a rule the posterior cell, i.e. the oocyte progenitor of the next cell generation. As a resul of the series of differential mitoses each chordoblast gives rise to a number of nurse cells and only one definitive oocyte. It is suggested that somatic prefollicular tissue plays a decisive role in oocyte determination in the Coleopteran telotrophic ovary.Keywords
This publication has 24 references indexed in Scilit:
- Extrachromosomal DNA and RNA-synthesis in oocytes ofCreophilus maxillosus (staphylinidae, coleoptera, polyphaga)Cellular and Molecular Life Sciences, 1976
- Gene amplification in oocytes of the rove beetleCreophilus maxillosus (staphylinidae, coleoptera-polyphagaCellular and Molecular Life Sciences, 1976
- OOGENESIS INDROSOPHILA VIRILIS. I. INTERACTIONS BETWEEN THE RING CANAL RIMS AND THE NUCLEUS OF THE OOCYTEThe Biological Bulletin, 1973
- STUDIES ON FES, A MUTATION AFFECTING CYSTOCYTE CYTOKINESIS, IN DROSOPHILIA MELANOGASTERThe Biological Bulletin, 1972
- A cytological study of the ovary of Rhodnius prolixus. III. Cytoarchitecture and development of the trophic chamberJournal of Morphology, 1972
- A cytological study of the ovary of Rhodnius prolixus. II. Oocyte differentiationJournal of Morphology, 1972
- NUCLEO‐CYTOPLASMIC INTERACTIONS IN THE ACHIEVEMENT OF NUCLEAR SYNCHRONY IN DNA SYNTHESIS AND MITOSIS IN MULTINUCLEATE CELLSBiological Reviews, 1971
- The origin and early differentiation of the egg chamber of Drosophila melanogasterJournal of Morphology, 1966
- Studies on cytokinesis in neuroblasts of the grasshopper, Chortophaga viridifasciata (de Geer)Experimental Cell Research, 1962
- Postembryonic development of the ovaries of oncopeltus fasciatus (dallas) seven figuresJournal of Morphology, 1955