Tilapia Topic: Eye Microscopy

If the surface of the eye is opaque, scrape with a clean scapel blade and place tissues into a drop of saline on a clean glass slide. Cover with a slip cover. Examine under 40 to 400X magnification.

Compare your sample with the following Disease Vectors:

Caligus sp. a parasitic copepod 2 to 3 mm in length (visable to the naked eye)

Monogenetic Trematodes parasitic flatworms. May be small (0.3 to 0.4 mm) or large (2to 3 mm) . Hooks on one end may be attached to the host fish. If still alive, will flex rapidly or contract slowly.