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Original Article
 
Ultrastructure of ovarian preantral follicles and corpus luteum in Indian flying fox Pteropus giganteus (Brünnich)
Ajay V Dorlikar1, Amir A Dhamani2, Pravin N Charde3, Anil S Mohite3
1MSc (Zoology) Research Scholar, PG Department of Zoology and Research Academy, Sevadal Mahila Mahavidyalaya, Sakkardara Square, Nagpur, Maharashtra, India.
2MSc (Zoology) PhD, PG Department of Zoology and Research Academy, NH College, Bramhapuri, Maharashtra, India.
3MSc (Zoology) PhD, PG Department of Zoology and Research Academy, Sevadal Mahila Mahavidyalaya, Sakkardara Square, Nagpur, Maharashtra, India.

Article ID: 100001C06AD2014
doi:10.5348/c06-2014-1-OA-1

Address correspondence to:
Ajay Vasantrao Dorlikar
PG, Department of Zoology and Research Academy
Sevadal Mahila Mahavidyalaya, Sakkardara Square
Nagpur, Maharashtra
India
Phone: 091-9422809685
Fax: 091-0712-2705037
Email: ajaydorlikar@gmail.com

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How to cite this article
Dorlikar AV, Dhamani AA, Charde PN, Mohite AS. Ultrastructure of ovarian preantral follicles and corpus luteum in Indian flying fox Pteropus giganteus (Brünnich). Edorium J Cell Biol 2014;1:1–11.


Abstract
Aims: This study was undertaken to reveal the ultrastructural details of preantral ovarian follicles and corpus luteum in Indian flying fox Pteropus giganteus.
Methods: Five specimens were collected during estrous, early pregnancy and mid-pregnancy from the feeding sites. Reproductive stages were confirmed by the histological examination of the uterus and ovaries. The ultrastructural details in the preantral follicle and luteal cells were studied using transmission electron microscope.
Results: Primordial graffian follicle (type-1) was composed of an oocyte surrounded by incomplete layer of 4–5 flattened granulosa cells resting on the basement membrane. In primary follicles oocyte was encircled by single layer of 10–12 cuboidal granulosa cells. Oocyte possesses numerous bent microvilli. In small preantral follicle (type-3), complete two to four layers of cuboidal granulosa cells were noted. Zona pellucida appears at this stage. Large preantral follicles (type-4) possessed four to six layers of granulosa cells resting on basement membrane. Single extrovert type of corpus luteum was observed during early to mid-pregnancy. Diameter of large luteal cells during early and mid pregnancy were 22.46±0.56 µm and 22.85±0.56 µm and of small luteal cells were 17.81 ± 0.40 µm and 17.34 ± 0.46 µm respectively.
Conclusion: Biphasic pattern of development of preantral follicle had been observed in Pteropus giganteus. Oocyte of large preantral follicles (type-4) was characterized by the presence of cortical granules in the cortical region. Ultrastructural features of large and small luteal cells confirms to the criteria of steroid secreting cells. No significant differences were noted in the diameter of large and small luteal cell during early and mid-pregnancy.

Keywords: Corpus luteum, Luteal cell, Oocyte, Pteropus giganteus, Preantral follicle

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Author Contributions:
Ajay V Dorlikar – Conception and design, Acquisition of data, Analysis and interpretation of data, Drafting the article, Critical revision of the article, Final approval of the version to be published
Amir A Dhamani – Conception and design, Acquisition of data, Analysis and interpretation of data, Drafting the article, Critical revision of the article, Final approval of the version to be published
Pravin N Charde – Conception and design, Acquisition of data, Analysis and interpretation of data, Drafting the article, Critical revision of the article, Final approval of the version to be published
Anil S Mohite – Conception and design, Acquisition of data, Analysis and interpretation of data, Drafting the article, Critical revision of the article, Final approval of the version to be published
Guarantor of submission
The corresponding author is the guarantor of submission.
Source of support
None
Conflict of interest
Authors declare no conflict of interest.
Copyright
© 2014 Ajay V Dorlikar et al. This article is distributed under the terms of Creative Commons Attribution License which permits unrestricted use, distribution and reproduction in any medium provided the original author(s) and original publisher are properly credited. Please see the copyright policy on the journal website for more information.



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