Ontogenesis of the ovary in a moth midge, Tinearia alternata Say (Diptera: Psychodidae)

Journal of Morphology
Marta Mazurkiewicz, Janusz Kubrakiewicz

Abstract

In a psychodid, Tinearia alternata, the initial differentiation of the polytrophic ovary occurs during the early larval stages. Early in development, each ovary anlage is a solid organ subdivided into three distinct zones: the cortex houses germ cells and somatic interstitial tissue, while two other somatic regions will give rise to the oviduct calyx and anterior part of the lateral oviduct. Germ cell cluster formation precedes the development of ovarioles. Each ovariole houses only one functional egg chamber. All ovarioles within paired ovaries are developmentally synchronized. In the larval ovaries, the newly formed egg chambers and then the ovarioles are intermingeled with and surrounded by the somatic interstitial tissue of the ovary cortex. The interstitial cells give rise to all the somatic elements of the ovarioles. In the pupal ovaries, the remaining interstitial tissue degenerates; thus, the ovarioles protrude into the body cavity. The ovaries in psychodids develop relatively large and swollen oviduct calyxes that are equivalent to receptaculum seminis (spermatheca). The morphological differentiation of germ cells within the egg chambers starts during late larval/early pupal stages. Nurse cell nuclei contain prominent ...Continue Reading

References

Mar 5, 1976·Cell and Tissue Research·A Fiil
Jan 24, 1992·Cell·D St Johnston, C Nüsslein-Volhard
Feb 1, 1993·Roux's Archives of Developmental Biology : the Official Organ of the EDBO·H O GutzeitR Fleig

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Citations

Aug 21, 2003·Genesis : the Journal of Genetics and Development·Janusz KubrakiewiczSzczepan M Biliński
Jul 24, 2008·Development Genes and Evolution·Mariusz K JaglarzSzczepan M Bilinski

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