Table 1. Summary of data from 5 sites and 3 schools
in the western Upper Peninsula of Michigan
from May 1-Oct. 15, 2000.

 

School

County

Date of Survey

Wetland Type

No. Frogs and Toads

No. Deformed (%)

No. Species

Species Present1

Species Deformed

MTU

(SYP)

 

Houghton

4 Aug

Pond

16

1  (6.2)

4

GF, MF, SP, NLF

 

NLF

“

 

Houghton

3 Aug

Lake

 

111

2 ( 1.8)

1

GF

GF

North Central

Area Schools

 

Menominee

31 Aug

Vernal

Pond

19

0 (0)

6

BF, MF, GF, NLF, WF, AT

none

Heather Luouto, teacher*

 

Houghton

19 July

Lake

 

52

2 (3.8)

2

GF, MF

GF

"

Ontonagon

18 July

"

 

12

0 (0)

2

GF, MF

none

Hancock Middle School

Houghton

9 Sept

Creek

20

0(0)

3

SP, WF, AT

none

“

“

“

Irrigation Ditch

22

7(31.8)

2

NLF, GF

NLF

 

 

“

“

13 Sept

Creek

 

 

37

0(0)

2

SP, WF

none

“

“

“

Irrigation Ditch

 

17

3(17.6)

2

NLF, GF

NLF

John Rosemurgy,** teacher

Houghton

17 Aug

Pond

Man made

20

1(5)

1

NLF

NLF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 Species codes: Green Frog = GF; Mink Frog = MF; Spring Peeper = SP; Gray Tree Frog = GTF, Northern Leopard Frog = NLF;

Wood Frog = WF; Pickerel Frog = PF; Bull Frog = BF; American Toad = AT.

*Engadine Consolidated Schools

**Washington Middle School, Calumet

 

 

Table 2. Total number of frogs and toads sampled in study,
seasonal distribution of sampling, and deformity types.

 

 

 

 

Sampling Period1

 

 

Species

No. Sampled

No. Deformed (%)

 

Spring

 

Summer

 

Fall

 

Types of Deformities

American Toad

3

0

0

2

1

none

Spring Peeper

44

0

0

1

43

none

Gray Treefrog

0

0

0

0

0

none

Green Frog

198

4 (0.02)

0

186

12

1 sagging jaw

1 missing entire hind calf

1 missing entire hind limb

1 missing hind digits

Bull Frog

3

0

0

3

0

None

Northern Leopard Frog

54

12 (32.3)

0

8

27

1 missing hind foot

5 poorly developed hind legs

2 tissue connecting hind leg to body

3 deformed hind legs

1 extra hind limb (atrophied)

Pickerel Frog

0

0

0

0

0

none

Mink Frog

10

0

0

10

0

none

Wood Frog

14

0

 

0

1

13

none

Total all species

    326

16 (0.05)

0

211

96

 

 

 

1 Spring: 1 May– 15 June; Summer: 16 June – 31 August; Fall: 1 September – October 15.