Abstract
Terminal oöcytes containing yolk in both healthy and nosema infected queen honey bees were studied. In the healthy queens the terminal oöcytes exhibited a layer of follicular cells which were covered by a smooth-surfaced ovariole sheath. In the oöplasm were numerous electrondense yolk granules and lipid yolk droplets. The elecron-dense yolk granules exhibited a crystalline structure. Stacks of endoplasmic reticulum were observed in the yolk granules throughout the oöplasm. Numerous mitochondria possessing well defined cristae were also observed. Oöcytes in the ovary of queen honey bees appeared degenerated after 7 days of infection by Nosema apis. The ovariole sheath was wrinkled. In the oöplasm, yolk granules were broken down into small spheres and granular substances. Numerous ribosomes without stacks of endoplasmic reticulate were observed. Lysosomes were abundant and numerous electron-dense materials surrounded by a membrane were detected. The oöcytes appeared to be extensively autolysed. The significance of these observations is discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
