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Table 1 Body length measures (minimum-mean-maximum) in the 12 sample groups (sex pooled) of the three lateral plate threespine stickleback morphs in Lake Engervann based on sampling locations and dates

From: Ongoing niche differentiation under high gene flow in a polymorphic brackish water threespine stickleback (Gasterosteus aculeatus) population

Lateral plate morph

Section

Sampling date

Body length (cm) min - mean - max

N males

N females

N fish for Stn382/μsat

Completely plated (CPM)

Upper part

Oct/Nov-2006

4.60–5.04 – 5.45

7

7

14/−

N fish total = 76:

Lower part

Oct/Nov-2006

4.55–5.08 – 5.70

7

8

15/−

N males = 38

Upper part

Mar/Apr-2007

4.70–5.22 – 5.70

12

10

22/22

N females = 38

Lower part

Mar/Apr-2007

4.75–5.27 – 6.75

12

13

25/25

Partially plated (PPM)

Upper part

Oct/Nov-2006

3.90–4.58 – 5.30

10

11

21/−

N fish total = 84:

Lower part

Oct/Nov-2006

4.15–4.77 – 5.35

10

4

14/−

N males = 42

Upper part

Mar/Apr-2007

4.25–4.84 – 6.45

9

15

24/24

N females = 42

Lower part

Mar/Apr-2007

4.50–4.99 – 5.90

13

12

25/25

Low plated (LPM)

Upper part

Oct/Nov-2006

3.35–4.24 – 5.50

9

10

18/−

N fish total = 76:

Lower part

Oct/Nov-2006

3.45–4.21 – 5.35

15

9

24/−

N males = 36

Upper part

Mar/Apr-2007

2.90–3.72 – 4.80

5

13

18/17

N females = 40

Lower part

Mar/Apr-2007

3.50–4.07 – 4.90

7

8

15/5

  1. The number of fish analysed for morphology are reported for each sex, for Stn382, and microsatellites evaluated to be neutral in the last column