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Table 2 Serum osmolarity (mOsM) and concentration (mM) of ions and urea

From: Takifugu obscurus is a euryhaline fugu species very close to Takifugu rubripes and suitable for studying osmoregulation

Species

Condition

mOsM

Na+

K+

Ca2+

Mg2+

Cl-

Urea

T. obscurus

SW

363 ± 9.4

179 ± 3.9

2.8 ± 0.4

3.1 ± 0.2

1.8 ± 0.1

144 ± 3.3

2.6 ± 0.4

 

FW

346 ± 5.7

166 ± 1.2

3.0 ± 0.7

3.5 ± 0.3

1.3 ± 0.1

128 ± 2.1*

3.7 ± 0.4

T. niphobles

SW

392 ± 5.6

197 ± 3.8

N.D.

2.8 ± 0.1

1.6 ± 0.1

126 ± 3.6

1.0 ± 0.4

 

FW

244 ± 9.5**

128 ± 5.7**

N.D.

2.2 ± 0.2

0.9 ± 0.2

74 ± 2**

0.4 ± 0.1

 

BW

355 ± 33

181 ± 15

N.D.

3.0 ± 0.3

2.0 ± 0.2

104 ± 12

0.6 ± 0.1

  1. Values are means ± SE; n = 4. *P < 0.01, **P < 0.001.
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BMC Physiology

ISSN: 1472-6793

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