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Mature gonadal histology and gametogenesis ofthe tortoise beetle Aspidimorpha sanctaecrucis (Fabricius, 1792)(Coleoptera: Cassidinae: Chrysomelidae): Histological observation |
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| รหัสดีโอไอ | |
| Creator | 1. Piyakorn Boonyoung 2. Sinlapachai Senarat 3. Jes Kettratad 4. Wannee Jiraungkoorskul 5. Narit Thaochan 6. Kong-Wah Sing 7. Theerakamol Pengsakul 8. Pisit Poolpras |
| Title | Mature gonadal histology and gametogenesis ofthe tortoise beetle Aspidimorpha sanctaecrucis (Fabricius, 1792)(Coleoptera: Cassidinae: Chrysomelidae): Histological observation |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2563 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 42 |
| Journal No. | 4 |
| Page no. | 873-878 |
| Keyword | germ cell, tortoise beetle, microanatomy, reproductive system |
| URL Website | https://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | The gonadal structure of insects has been well reported but there is a lack of such information from tortoise beetles thatare an economically important insect. In this study, the gonadal structure and differentiating stage of gametogenesis of tortoisebeetles Aspidomorpha sanctaecrucis are examined using the histological technique. At the level of light microscopy, our resultsrevealed that the A. sanctaecrucis male reproductive system has a pair of testicular structures that consist of six seminiferoustubules. All zones contained various stages of spermatogenesis and could be divided into five stages depending on the shape andhistological organization, particularly chromatin organization, which was divided into spermatogonia, primary spermatocyteswith 8 sub-steps (leptotene, zygotene, pachytene, diplotene, diakinesis, metaphase, anaphase, and telophase), secondaryspermatocytes, spermatids (two sub-steps), and spermatozoa. A pair of ovaries was observed in the female A. sanctaecrucis. Eachovary is considered to be a meroistic ovariole that exists with nurse cells. The differentiating oogenic stages includingprevitellogenic and vitellogenic stages were observed. Our study provides baseline data that will be useful for future workinvolved in the ultrastructure and physiology of the reproductive tissue in tortoise beetles, especially the differentialcharacterizations of the seminiferous tubule and ovarian type in beetles. |
