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Table 3 Mean age, in years, of the females and the males used to estimate the sex difference in whole-fish PCB concentrations

From: Sex differences in contaminant concentrations of fish: a synthesis

Species

Population

Mean age of females

Mean age of males

Reference

Walleye

South Manistique Lake

5.7 (0.3)

5.1 (0.3)

7

Lake trout

Lake Ontario

5.5 (0.1)

5.8 (0.1)

8

Coho salmon

Lake Michigan

2.0 (0.0)

2.0 (0.0)

3

Burbot

Lake Erie

9.8 (0.9)

9.5 (1.0)

22

Burbot

Great Slave Lake

11.0 (0.7)

11.5 (0.7)

24

Sea lamprey

Lake Huron

1.0 (0.0)

1.0 (0.0)

23

Cisco

Lake Superior

7.0 (0.0)

7.0 (0.0)

25

Lake whitefish

Lake Huron

10.4 (0.4)

10.9 (0.4)

26

Summer flounder

New Jersey coast

3.7 (0.2)

4.2 (0.2)

27

  1. Standard error of the mean enclosed within parentheses
  2. For sea lamprey, age refers to the presumed number of years that the sea lamprey lived in the lake feeding on the blood of other fish before ascending the river to spawn