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Ultrastructure of Spermiognesis in the Yellow-Bellied Sea Snake, Pelamis platurus(Squamata: Elapidae: Hydrophiinae)

Burkhart, Brenna
http://rave.ohiolink.edu/etdc/view?acc_num=wuhonors1398955341

Abstract Details

2013, Bachelor of Science, Wittenberg University, Biology.
Within the order Squamata, only a few studies have been completed on the morphological characteristics of developing spermatids as they undergo spermiogenesis, including a recent study in 2010 on Cottonmouths (Gribbins, et al., 2010). To date there have been no studies on the spermiogenesis within the sea snakes of the subfamily Hydrophiinae that consists of 17 genera and 62 species of venomous snakes. Testicular tissue samples of three male Pelamis platurus were captured in Costa Rica in July of 2009. Cellular analysis, through the use of light and transmission electron microscopy, was performed on developing spermatids in the three phases of spermiogenesis: acrosome formation, nuclear elongation, and chromatin condensation. Transmission electron microscopy was used to determine the ultrastructure of these sperm cells for comparison with the other snakes studied to date. Spermatids of P. platurus possesses some notable differences such as a more prominent central lacuna in the nucleus, radiating arrays of the outer longitudinal manchette microtubules, and a shorter epinuclear lucent zone when compared to the Cottonmouth and other snakes studied to date. The majority of the spermatid morphology is conserved during the phases of spermiogenesis. The minute differences that do exist in the Yellow-bellied Sea Snake spermatids may help us understand the phylogenetics and evolution of aquatic snakes from their terrestrial ancestors. However, data on snake spermatids is lacking at this time and many more species of snakes have to be studied before we have a robust understanding of spermiogenesis in the taxa of squamates.
Kevin Gribbins, Dr. (Advisor)
Michelle McWhorter, Dr. (Committee Member)
Barbara Austin, Dr. (Committee Member)
24 p.
Animals; Biology; Zoology
spermiogenesis; cottonmouth snakes

Recommended Citations

Citations

  • Burkhart, B. (2013). Ultrastructure of Spermiognesis in the Yellow-Bellied Sea Snake, Pelamis platurus(Squamata: Elapidae: Hydrophiinae) [Undergraduate thesis, Wittenberg University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wuhonors1398955341

    APA Style (7th edition)

  • Burkhart, Brenna. Ultrastructure of Spermiognesis in the Yellow-Bellied Sea Snake, Pelamis platurus(Squamata: Elapidae: Hydrophiinae). 2013. Wittenberg University, Undergraduate thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=wuhonors1398955341.

    MLA Style (8th edition)

  • Burkhart, Brenna. "Ultrastructure of Spermiognesis in the Yellow-Bellied Sea Snake, Pelamis platurus(Squamata: Elapidae: Hydrophiinae)." Undergraduate thesis, Wittenberg University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wuhonors1398955341

    Chicago Manual of Style (17th edition)

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© 2013, all rights reserved.
This open access ETD is published by Wittenberg University Honors Theses and OhioLINK.