Just Accepted Manuscripts
Short Note

Study of the anatomy and histology of Female reproductive system of the Asian snake-eyed skink, Ablepharus pannonicus (Sauria: Scincidae): Study of the anatomy and histology of Female reproductive system of the Asian snake-eyed skink

Omid Heirani
Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran
Rasoul Karamiani
Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran
Mehri Azadbakht
Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran

Published 2026-01-16

Keywords

  • reproductive cycle, Ablepharus pannonicus, reproductive system, ovary

How to Cite

Heirani, O., Karamiani, R., & Azadbakht, M. (2026). Study of the anatomy and histology of Female reproductive system of the Asian snake-eyed skink, Ablepharus pannonicus (Sauria: Scincidae): Study of the anatomy and histology of Female reproductive system of the Asian snake-eyed skink. Acta Herpetologica. https://doi.org/10.36253/a_h-16392

Abstract

This study examines and contrasts the anatomy and histology of the female reproductive system in Ablepharus pannonicus, a member of the Scincidae family, across the spring and autumn seasons. Female specimens of A. pannonicus were collected from the northern slopes of the Tarazak-e Kasan village, located 89 km south of Kermanshah Province in west Iran. After being anesthetized, the specimens were dissected in the laboratory, and their reproductive systems were processed for tissue analysis. Using a rotary microtome, serial sections were prepared and subsequently stained with Hematoxylin and Eosin for detailed histological examination. The findings indicate that during the spring, the ovaries of A. pannonicus contain all stages of follicular development, including primitive, mature, and ovulation-ready follicles. In contrast, the autumn samples predominantly exhibit primitive or pre-ovulatory follicles, with a notable absence of mature follicles. These observations suggest a seasonal reproductive pattern in female A. pannonicus, characterized by significant morphological changes and heightened activity within the ovaries and genital tracts during spring. As the ambient temperature drops and the reproductive season concludes, there is an observable increase in gonadal volume and a concurrent decrease in gonadal activity, leading to an absence of sexual activity in the autumn. It is hypothesized that during this period, the animals engage in feeding and fat storage in preparation for hibernation.

References

  1. Blackburn, D. G., Kleis‐San Francisco, S., & Callard, I. P. (1998). Histology of abortive egg sites in the uterus of a viviparous, placentotrophic lizard, the skink Chalcides chalcides. Journal of Morphology, 235(2), 97-108.
  2. Bou-Resli, M. N., Bishaw, L. F. and Al-Zaid, N. S. )1981(. Observations on the fine structure
  3. of the sperm storage crypts in the lizard Acanthodactylus scutellatus hardyi. Archives of
  4. Biology (Bruxelles) 92: 287–298.
  5. Censky, E. J. (1995). Reproduction in two Lesser Antillean populations of Ameiva plei (Teiidae). Journal of Herpetology, 553-560.
  6. Corso, G., Delitala, G. M., & Carcupino, M. (2000). Uterine morphology during the annual cycle in Chalcides ocellatus tiligugu (Gmelin) (Squamata: Scincidae). Journal of Morphology, 243(2), 153-165.
  7. Darabitabar, N., Gharzi, A., & Karamiani, R. (2021). Comparison of anatomy and histology of urinary system in species of Laudakia nupta, Trapelus agilis and Lacerta media. Journal of Animal Environment, 13(3), 139-146.
  8. Eckstut, M. E., Lemons, E. R., & Sever, D. M. (2009). Annual dynamics of sperm production and storage in the Mediterranean Gecko, Hemidactylus turcicus, in the southeastern United States. Amphibia-Reptilia, 30(1), 45-56.
  9. Etches, R. J., & Petitte, J. N. (1990). Reptilian and avian follicular hierarchies: models for the study of ovarian development. Journal of Experimental Zoology, 256(S4), 112-122.
  10. Guillette Jr, L. J., Fox, S. L., & Palmer, B. D. (1989). Oviductal morphology and egg shelling in the oviparous lizards Crotaphytus collaris and Eumeces obsoletus. Journal of Morphology, 201(2), 145-159.
  11. Guraya, S. S. (1989). Ovarian follicles in reptiles and birds. Zoophysiology, 24, XIII-285.
  12. Huang, W. S. (1997). Reproductive cycle of the oviparious lizard Japalura brevipes (Agamidae: Reptilia) in Taiwan, Republic of China. Journal of Herpetology, 22-29.
  13. Jones, R. E., & Guillette Jr, L. J. (1982). Hormonal control of oviposition and parturition in lizards. Herpetologica, 80-93.
  14. Jones, R. E., & Summers, C. H. (1984). Compensatory follicular hypertrophy during the ovarian cycle of the house gecko, Hemidactylus frenatus. The Anatomical Record, 209(1), 59-65.
  15. Karamiani, R., Rastegar-Pouyani, N., & Rastegar-Pouyani, E. (2018). Modeling the past and current distribution and habitat suitability for Ablepharus grayanus and A. pannonicus (Sauria: Scincidae). Asian herpetological research, 9(1), 56-64A.
  16. Klosterman, L. L. (1983). The ultrastructure of germinal beds in the ovary of Gerrhonotus coeruleus (Reptilia: Anguidae). Journal of morphology, 178(3), 247-265.
  17. Radder, R. S., Pizzatto, L., & Shine, R. (2008). Morphological correlates of life-history variation: is lizard clutch size related to the number of germinal beds in the ovary? Biological Journal of the Linnean Society, 94(1), 81-88.
  18. Rheubert, J., Pasternak, M. A., Ely, M., Siegel, D. S., Trauth, S. E., Gribbins, K. M., & Sever, D. M. (2020). Seasonal histology and ultrastructure of the urogenital system in two sympatric lizards. Journal of Zoology, 310(4), 273-286.
  19. Rheubert, J. L., Siegel, D. S., & Trauth, S. E. (Eds.). (2014). Reproductive biology and phylogeny of lizards and tuatara. CRC Press.
  20. Schaefer, G. C., & Roeding, C. E. (1973). Evidence for vaginal sperm storage in the mole skink, Eumeces egregius. Copeia, 1973(2), 346-347.
  21. Sever, D. M., & Hopkins, W. A. (2004). Oviductal sperm storage in the ground skink Scincella laterale Holbrook (Reptilia: Scincidae). Journal of Experimental Zoology Part A: Comparative Experimental Biology, 301(7), 599-611.
  22. Siegel, D. S., Miralles, A., Chabarria, R. E., & Aldridge, R. D. (2011). Female reproductive anatomy: cloaca, oviduct, and sperm storage. Reproductive biology and phylogeny of snakes, 9, 347-409.
  23. Suvarna, K. S., Layton, C., & Bancroft, J. D. (2018). Bancroft's theory and practice of histological techniques. Elsevier health sciences.
  24. Torki, F. (2006). Spermatogenesis in the agama Trapelus lessonae (Agamidae: Reptilia) in the central Zagros Mountains, Iran. Zoology in the middle East, 38(1), 21-28.
  25. Vergilov, V. S., Necheva, V. G., & Zlatkov, B. P. (2018). Reproduction of Snake-eyed Skink Ablepharus kitaibelii (Bibron & Bory de Saint-Vincent, 1833) (Squamata: Scincidae) in Bulgaria. Acta Zoologica Bulgarica, 70(4), 507-516.
  26. Vitt, L. J. (1982). Sexual dimorphism and reproduction in the microteiid lizard, Gymnophthalmus multiscutatus. Journal of Herpetology, 16(3), 325-329.