Histological and Electron Microscopical Observations on the Testis and Male Accessory Glands of Poecilimon ataturki Ünal, 1999 (Orthoptera, Tettigoniidae)

Year 2021, , 75 - 81, 17.12.2021

Damla Amutkan Mutlu , İrmak Polat , Zekiye Suludere

https://doi.org/10.26650/EurJBiol.2021.1001795

Abstract

Objective: The literature has many studies in the world about the morphology and histology of insect tissues, especially structures related to reproductive systems. However, there are no studies about the biology of Poecilimon ataturki Ünal, 1999 (Orthoptera, Tettigoniidae). For this reason, we aimed that the morphology and the structure of the testes and the accessory glands in P. ataturki are revealed.

Materials and Methods: In the present study, the histology and morphology of organs of the reproductive system in male P. ataturki, an endemic species in Turkey was examined by light microscope, scanning electron microscope, transmission electron microscope, and stereomicroscope.

Results: The reproductive system of male P. ataturki is composed of two testes, two vas deferens and short and long accessory glands. Each testis includes numerous follicles where the sperm generation occurs in. There are cysts in the follicles, one of which is in a particular sperm development. 3 different development stages are observed in follicles as growth zone, maturation zone and transformation zone. During these developmental stages, first spermatocytes reproduce by mitosis, and then they turn into spermatids by meiosis. Spermatozoa are also formed by the transformation of spermatids. Thus, the stages of spermatogenesis and spermiogenesis are completed. The accessory glands, whose main task is to produce secretion in order to facilitate the feeding of sperm and their transfer to the female, consist of many tubular structures, long and short. It is seen that it consists of single-layered epithelial tissue in cross sections of the accessory gland tubules.

Conclusion: As a consequence of this work, it has been evinced that male reproductive system elements belonging to P. ataturki show high similarity with the male reproductive systems of other species in the Tettigoniidae family.

Keywords

Male reproductive system, light microscopy, scanning electron microscopy, transmission electron microscopy, insect

Thanks

The authors owe Prof. Dr. Mustafa ÜNAL from Abant İzzet Baysal University a great debt of gratitude for diagnosis of the species studied and Gazi University Academic Writing and Research Center for their help and support in the proofreading of the current study.

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