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Table 1 Ion concentrations and osmolality of luminal fluid along the digestive tract of eel. Ion concentrations of eel plasma and of seawater are also shown

From: The digestive tract as an essential organ for water acquisition in marine teleosts: lessons from euryhaline eels

Segment

Osmolality (mOsm/l)

Na+ (mM)

*K+ (mM)

Cl- (mM)

HCO3- (mM)

Mg2+ (mM)

Ca2+ (mM)

SO42- (mM)

Esophagus

449

211

10

225

 -

40

8

 -

Stomach

460

222

14

255

 -

41

10

 -

Intestine

295

40

14

68

100

150

12

133

Rectum

300

4

11

59

105

188

14

105

SW

1029

450

10

524

2

50

10

30

Plasma

377

175

4

155

14

3

2

1

  1. -, not measured. The data are based on Tsukada et al. [241]
  2. *Data of Pleuronectes platessa [74]
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Zoological Letters

ISSN: 2056-306X

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