Table 1 Comparison of oxygen binding parameters and cation composition of haemolymph between Pareledone charcoti , Octopus pallidus and Eledone moschata

Pareledone charcoti

0

0.41

1.17

(NA, pH 7.42)

(0.88-1.46)

5

0.7

2.39

−1.22

0.15

52.6

385.5

8.5

6.1

8.8

(NA, pH 7.34)

(0.47-4.32)

(−1.67 - -0.78)

(NA)

(39.8 – 65.5)

(348.4 – 422.6)

(6.7 – 10.2)

(1.6 – 10.5)

(7.3 – 10.2)

10

2.34

3.17

(2.19-2.49, pH 7.27)

(2.51-3.82)

Octopus pallidus

10

1.63

1.40

(0.99-2.26, pH 7.27)

(1.26-1.55)

15

1.81

2.55

−1.97

0.39

45.6

372.0

10.0

8.6

7.5

(1.46-2.16, pH 7.19)

(2.24-2.85)

(−2.50 - -1.44)

(0.05 – 0.72)

(41.6 – 49.6)

(356.2 – 387.8)

(7.7 – 12.3)

(3.2 – 13.9)

(6.7 – 8.2)

20

6.07

2.94

(3.74-8.40, pH 7.11)

(2.63-3.25)

Eledone moschata

10

0.56

1.13

(0.1-1.02 pH 7.27)

(0.77-1.48)

15

1.49

1.79

−1.88

0.21

49.9

386.8

8.8

3.0

7.3

(NA, pH 7.19)

(0.70-2.89)

(−2.22 - -1.55)

(0.11 – 0.30)

(42.2 – 57.6)

(334.0 – 439.5)

(6.2 – 11.4)

(−3.8 – 9.8)

(5.7 – 8.9)

20

2.62

2.08

(2.00-3.24, pH 7.11)

(1.79-2.37)

ANOVA^†

F _{2, 149} = 10.82

F _{2, 16} = 3.71

F _{2, 7} = 1.58

F _{2, 17} = 0.78

F _{2, 17} = 0.31

F _{2, 17} = 0.85

F _{2, 17} = 1.35

F _{2, 17} = 2.28

P  < 0.001

P  = 0.048

P = 0.271

P = 0.475

P = 0.739

P = 0.446

P = 0.285

P = 0.133