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Related Experiment Videos

In vitro technique for studying garter snake (Thamnophis sp.) development.

D A Holtzman1, M Halpern

  • 1Program in Neural and Behavioral Science, State University of New York Health Science Center, Brooklyn 11203.

The Journal of Experimental Zoology
|June 1, 1989
PubMed
Summary

This study successfully cultured garter snake embryos in vitro for 35 days, observing development similar to in vivo conditions. This reptile research advances in vitro embryonic studies.

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Area of Science:

  • Herpetology
  • Developmental Biology
  • In Vitro Culture Techniques

Background:

  • Reptilian embryos are underrepresented in in vitro developmental studies.
  • Long-term culture of snake embryos presents unique challenges.

Purpose of the Study:

  • To establish and validate a long-term in vitro culture system for garter snake (Thamnophis sp.) embryos.
  • To compare in vitro embryonic development with in vivo timelines.
  • To demonstrate the utility of in vitro culture for studying embryonic development and manipulation.

Main Methods:

  • Garter snake embryos were explanted and cultured in Eagle's Minimum Essential Medium with supplements and antibiotics for up to 35 days.
  • Cultured embryos were exposed to tritiated thymidine for cell proliferation analysis.

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  • Autoradiography was used to examine embryonic tissues and developmental stages.

    • Main Results:

    • The in vitro culture system supported embryo development for up to 35 days.
    • External morphologic changes in vitro closely mirrored the established in vivo developmental timetable.
    • The technique facilitated easier embryo staging and manipulation for experimental procedures.

    Conclusions:

    • Long-term in vitro culture of snake embryos is feasible and provides a reliable model for developmental studies.
    • This method allows for direct observation and manipulation, aiding in understanding embryonic development in reptiles.
    • This research expands the limited data on in vitro reptilian embryo development.