1. Lecture 11. September 19, 2008. Fish Friday #1 A. Osteoglossomorpha - Blake Bushman & Blake Ruebush B. Elopomorpha & Clupeomorpha Note - Please read the Grunbaum paper for Monday! We will discuss this in class.

2. Elopomorpha

4. Leptocephalus larva

5. Elopomorpha Order Elopiformes - ladyfishes and tarpon

7. Elopomorpha

8. Anguilla rostrata American eel

9. Gulper eels Garden or worm eels

10. Elopomorpha Order Anguilliformes- true eels Family Muraenidae - moray eels carry ciguatera toxin

11. Simenchelys parasiticus snubnose parasitic eel. parasitic fish living inside a shark heart

12. Clupeomorpha Clupeiformes-herrings, anchovies, shads Clupeidae - shads & herrings Engraulidae - anchovies

13. Clupeomorpha Clupeiformes-herrings, anchovies, shads

14. Clupeomorpha Clupeidae-herrings, sardines, and shads

15. Clupeomorpha Clupeidae-herrings, sardines, and shads Illinois - Five species, two non-native Found in large rivers, lakes, reservoirs Alosa Dorosoma

16. Group Activity #1 -Draw the phylogenetic tree & distinguishing traits for: group a - Myxiniformes, Gnathostomata, Chondrichthyes, Osteichthyes group b - Petromyzontiformes, Elasmobranchii, Holocephali, Sarcopterygii, Actinopterygii group c - Elasmobranchii, Holocephali, Sarcopterygii, Actinopterygii group d - Myxiniformes, Petromyzontiformes, Chondrichthyes, Sarcopterygii

17. Group Activity #3 - Design a dichotomous key that would allow one to distinguish these groups For example... Step 1 - lacks vertebrae --> Myxiniformes if not --> go to step 2 Step 2 - lacks jaws --> Petromyzontiformes if not --> go to step 3

18. Review Questions 1. Describe the body shapes of tarpon, bonefish, eels, and gulper eels. What trait unites these seemingly disparate group of fish? 2. Describe the life-history of catadromous eels. What does it mean to be catadromous? 3. According to your book, why are tarpon (elopiforms) considered to be primitive teleosts? 4. Who are the clupeiforms? Where do they generally occur? Why are they important? Which clupeiforms occur in Illinois? 5. What does it mean to have an otophysic connection? What are the consequences of such a structure?