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27 Reading: Roundworms

Ascaris Dissection

Procedure

  1. Obtain a female Ascaris and place it on a dissecting pan. The posterior end is curved in males and straight in females.
  2. Make a shallow longitudinal cut the length of the worm and pin it open as illustrated below.
  3. Identify the gut, ovary, oviduct, uterus, and vagina.

Ascaris

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Trichinella

View a prepared slide of Trichinella in the muscle tissue of a host organism.

Figure 1. Trichinella spiralis encysted in muscle tissue of a host X 40
Figure 1. Trichinella spiralis encysted in muscle tissue of a host X 40

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Roundworms, Biology 102. Authored by: Michael J. Gregory, Ph.D. Provided by: LibreTexts. Located at: https://bio.libretexts.org/Special:Userlogin?returntotitle=Under_Construction%2FBioStuff%2FBIO_102%2FLaboratory_Exercises%2FRoundworms. Project: The Biology Web. License: CC BY-NC-SA: Attribution-NonCommercial-ShareAlike

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Lab Manual for Biology Part II Copyright © 2022 by LOUIS: The Louisiana Library Network is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

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