FNR 24250 Study Guide - Midterm Guide: Northern Lampreys, Lamprey, Centrarchidae

• School: Purdue University
• Department: Forestry & Natural Resources
• Course: FNR 24250
• Professor: Dr.Christie

Document Summary

L i f e s pa n: up to 8 years. Distribution: marine invader from atlantic ocean into great lakes region. L i f es pa n: up to 11 years. H a b i tat: adult: large rivers and lakes. Oral disc wider than head bicuspid lateral circumoral teeth: american brook lamprey. Distribution: upper half of the mississippi river basin and great lakes region. L i f e s pa n: 5 years (6 months spent as adult) H a b i tat: ammocoetes live in slow moving, medium to large streams with soft substrate. Adults live in fast flowing water with sand or gravel bottoms. Diet: ammocoetes feed on organic matter and microscopic organisms. Reproduction: sexual maturity 7 for females, 5 for males. H a b i tat: benthic dwellers in turbid pools of larger rivers. Diet: benthic aquatic invertebrates: family: polyodontidae, paddlefish. Reproduction: males mature at 5yrs, females at 8yrs.