Oogenesis in the Malaria Mosquito Anopheles Gambiae

Overview

Journal Cell Tissue Res

Specialties Anatomy & Histology
Cell Biology

Date 1976 Mar 5

PMID 1253253

Citations 3

Authors

A Fiil

Affiliations

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Abstract

Oogenesis has been followed with the electron microscope in 2 strains of the malaria mosquito Anopheles gambiae, from the emergence of the adult (oocytes at leptonema) till shortly before the oocytes are ready for oviposition. After pachynema the chromosomes form a karyosphere and a fibrous capsule develops around it. Work on other mosquitoes suggests that the capsule may be related to the synaptonemal complexes. Bot Anopheles strains contain at some time an extrachromosomal (not DNA-containing) body comparable to the karyosphere in size. Clusters of granules are present at the surface of the nucleolus and free in the nucleoplasm. Tentative results indicate that they may contain DNA. During oogenesis the nucleolus becomes very large, mainly because of proliferation of the nucleolonema. Towards the end of oocyte development of the nucleus assumes the large canoe-shape also seen in Aedes and Culex. Nucleolonema traverse the entire nucleus, and modified granular clusters are found throughout.

Citing Articles

Oogenesis of Hematophagous Midge (Diptera: Ceratopogonidae) and Nuage Localization of Vasa in Germline Cells.

Wang S, Ching Y, Krishnaraj P, Chen G, Radhakrishnan A, Lee H Insects. 2020; 11(2).

PMID: 32033475 PMC: 7074065. DOI: 10.3390/insects11020106.

Gene expression patterns associated with blood-feeding in the malaria mosquito Anopheles gambiae.

Dana A, Hong Y, Kern M, Hillenmeyer M, Harker B, Lobo N BMC Genomics. 2005; 6:5.

PMID: 15651988 PMC: 546002. DOI: 10.1186/1471-2164-6-5.

Meiotic chromosome pairing and synaptonemal complex transformation in Culex pipiens oocytes.

Fiil A Chromosoma. 1978; 69(3):381-95.

PMID: 743906 DOI: 10.1007/BF00332141.

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