The Company of Biologists

Table 2.

Rectal fluid ion concentrations of O. beta acclimated to 9, 35 and 50 ppt

	Na⁺	Cl^–	Mg²⁺	SO₄^2–	Ca²⁺	K⁺
9	117.3±17.5^*	86.8±10.2	46.3±19.6^*	48.8±9.2^*	2.0±0.3	4.2±0.6^*
35	47.8±19.4	90.1±24.5	158.2±16.8	83.2±9.4	3.7±0.5	1.6±0.4
50	37.2±15.2	132.2±17.9	219.9±6.3^*	86.3±2.7	3.5±1.3	1.6±0.6

	Na⁺	Cl^–	Mg²⁺	SO₄^2–	Ca²⁺	K⁺
9	117.3±17.5^*	86.8±10.2	46.3±19.6^*	48.8±9.2^*	2.0±0.3	4.2±0.6^*
35	47.8±19.4	90.1±24.5	158.2±16.8	83.2±9.4	3.7±0.5	1.6±0.4
50	37.2±15.2	132.2±17.9	219.9±6.3^*	86.3±2.7	3.5±1.3	1.6±0.6

Concentrations (mmol l^–1) of Na⁺,Cl^–, Mg²⁺, SO₄^2–,Ca²⁺ and K⁺ accumulated over 48 h in rectal fluid of toadfish acclimated to 9, 35 and 50 ppt. Values are means ± s.e.m.(N⩾4). An asterisk (^*) indicates statistically significant difference from 35 ppt (P<0.05)

View Large

This Feature Is Available To Subscribers Only