Internal and External Parasites 1 Metamorphosis  The process by which organisms change in form and structure in their lives, such as insects do. 2 Incomplete Metamorphosis 3 Complete Metamorphosis 4 Points for Informational Fact Sheets  Name of parasite  Description of parasite and its life cycle  Symptoms of infection that the host animal may exhibit  What the parasite does to the host animal  How the parasite can be treated  How the parasite should be prevented or controlled 5 Key points for informational fact sheets  You need to be factual, precise and to the point.  You need to work effectively and efficiently as you will have the rest of this period and the first part of the next period to finish these sheets.  Ask for assistance if you need it.  You can use an animal science book, The Stockman’s Handbook and the Internet for your information. I would suggest first checking both books by looking up parasites in the index. 6 Key points for informational fact sheets  You will tell the class about your informational sheet when you hand them out to the class.  We will need to have enough copies of your informational sheet for the entire class – see me about how to get that accomplished.  You will be graded on the completeness of your informational sheet based upon the check sheet I will hand out as you begin working.  Lastly, if you can find a picture of the parasite – that would be good to include. 7 Additional Scanned Images for Instructional Use 8 Greatly enlarged red blood cells from an animal with anaplasmosis – the black dots near the margins of the cells are Anaplasma marginale 9 Blow Fly 10 Effect of Heel flies on heifers 11 Face flies on cow 12 Grub under skin 13 Horn flies on cow 14 Lice 15