Hamline University Graduate School
St. Paul, Minnesota

Hamline University Graduate School
St. Paul, Minnesota

"cold blood"

Anuran
Diversity

Frogs and Toads

Slide 6

Slide 7

MN Frogs and Toads

Why We Care

Why We Care

4. Frogs As Bio-indicators

4. Frogs As Bio-indicators

Malformed Amphibians

External Malformations

Internal Malformations

Malformed Frog Pictures

Slide 17

Slide 18

Slide 19

Slide 20

Causes of Malformations

Trematode (flatworm) cysts have been demonstrated to cause problems in limb bud development in tadpoles

Slide 23

Possible Chemical Contaminants

Types of Agrochemicals

Types of Agrochemicals

Where have all the frogs gone?
Global Anuran Decline

Global Population Declines

Global Population Declines