Key terms: toxicity, pulse rate, blood circulation, Phylum Annelida, Class Oligochaeta, freshwater invertebrate
Purpose: a model for students to conduct real experiments that they design based on a simple “model organism”known as black worms. With very little effort it is possible to provide students
The student will be able to observe and record the pulse rate of Lumbriculus variegatus ( an aquatic segmented worm).
The student will design and carry out an experiment showing the effect of various substances on the pulse rate of Lumbriculus variegatus.
Follow the link to an Adobe PDF copy of this lab developed by Randy Dix and the American Physiology Society. Additional teaching resources at my site.
These worms were made famous by the late Charlie Drewes and many of the techniques are of his design. His website is an invaluable resource and many thanks go to those that maintain and support his teachings. http://www.eeob.iastate.edu/faculty/DrewesC/htdocs/