The Company of Biologists

Table 3.

Na⁺/K⁺-ATPase activity in middle and posterior segments of the killifish intestine

		Time after transfer
Segment	Salinity	Pre-transfer	12 h	3 days	7 days
Middle	BW	1.49±0.08	1.59±0.21	2.49±0.34^*	1.97±0.43
	FW		2.13±0.14	1.78±0.19	2.44±0.26^*
Posterior	BW	2.21±0.37	1.46±0.26	2.89±0.47	3.71±0.61^*
	FW		3.02±0.21	2.55±0.33	4.61±0.65^*

		Time after transfer
Segment	Salinity	Pre-transfer	12 h	3 days	7 days
Middle	BW	1.49±0.08	1.59±0.21	2.49±0.34^*	1.97±0.43
	FW		2.13±0.14	1.78±0.19	2.44±0.26^*
Posterior	BW	2.21±0.37	1.46±0.26	2.89±0.47	3.71±0.61^*
	FW		3.02±0.21	2.55±0.33	4.61±0.65^*

Na⁺/K⁺-ATPase activity (μmol mg^-1protein h^-1) is expressed as means s.e.m. (N≥8).

BW, brackish water control: FW, fresh water.

Significant difference from pre-transfer BW group (P<0.05). There were no significant differences between FW and time-matched BW groups.