Skip to main content

Table 2 Mean (±SE) values of mass, snout-vent length (SVL), δ 13 C, and δ 15 N for larval long-toed salamanders clustered into putative cannibal or typical morphology groups based on head morphometrics collected in June and August 2007, and July and August 2008

From: Shifty salamanders: transient trophic polymorphism and cannibalism within natural populations of larval ambystomatid salamanders

Year

Month

Morphology

n

Mass (g)

SVL (mm)

δ13C (‰)

δ15N (‰)

2007

June

Cannibal

4

0.4 ± 0.0

21.5 ± 0.3

-27.6 ± 0.3

7.2 ± 0.4

Typical

12

0.3 ± 0.0‡

20.9 ± 0.1‡

-28.4 ± 0.2

6.2 ± 0.1*

 

August

Cannibal

3

0.9 ± 0.1

34.4 ± 1.1

-24.7 ± 0.1

10.7 ± 0.4

Typical

11

0.6 ± 0.0†

28.6 ± 0.6†

-24.9 ± 0.1

9.3 ± 0.2*

2008

July

Cannibal

12

0.1 ± 0.0

13.9 ± 0.3

-27.9 ± 0.4

5.4 ± 0.4

Typical

9

0.1 ± 0.0†

11.6 ± 0.2†

-27.3 ± 0.5

5.8 ± 0.4

 

August

Cannibal

14

2.5 ± 0.3

38.4 ± 1.0

-26.4 ± 0.4

6.6 ± 0.2

Typical

29

0.9 ± 0.0†

29.2 ± 0.6†

-25.8 ± 0.2

6.6 ± 0.1

  1. Symbols denote significant differences between putative cannibal and typical groups for each sampling period: † ≤0.001; ‡ ≤0.01; * ≤0.05.