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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]