Biology 201
Worms !
Examples from the
Nematoda, Annelida and
Platyhelmenthes
Part 1. Life cycles
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credits, notes |
| Ascaris lumbricoides |
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"Ascariasis LifeCycle
- CDC Division of Parasitic Diseases" by This file is lacking author
information. - This file is lacking source information.Please edit this
file's description and provide a source.. Licensed under Public domain
via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Ascariasis_LifeCycle_-_CDC_Division_of_Parasitic_Diseases.png#mediaviewer/File:Ascariasis_LifeCycle_-_CDC_Division_of_Parasitic_Diseases.png |
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Worm Photographs
Ascaris lumbricoides
- the giant human (porcine) roundworm
Transverse sections. Feel free to print these off, label them, and have
them checked by your laboratory instructor. If you bring in the copies to your
lab, you can label the photos as you go.
Other sections (non-histological) - all of these are
from one worm. What sex is this worm?
 Anterior end |
 Posterior end |
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Dissections of adult
Ascaris lumbricoides.
| Male. Note the abrupt
change in diameter of the (broken) seminal vesicle to the vas
deferens. |
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| Female. |
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| Female, close up of
anterior reproductive structures. |
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| Male Ascaris -
reproductive structures removed. |
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| Male Ascaris
- same as the previous photo, but with the gut deflected. |
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Neries
- the clam worm
Feel free to print
these off, or put them in a PowerPoint, label
them, and have them checked by your laboratory instructor.
| Dissections |
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awesome jaws, from below |
awesome jaws, from above |
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transverse section through the pharynx |
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| Microscopy |
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This shot is ventral side
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Flukes
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The Liver Fluke, Fasciola hepatica
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The Chinese
Liver Fluke, Chlonorchis sinensis. |
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R.F.
Lauff
Department of Biology
St. Francis Xavier University
Antigonish, NS
Canada B2G 2W5
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