Anguilla anguilla L. plasma cortisol, lactate and glucose responses to abietic acid, dehydroabietic acid and retene

Abstract

Anguilla anguilla L. were exposed to 0, 0.1, 0.3, 0.9 and 2.7 μM abietic (AA), dehydroabietic (DHAA) acids and retene (Re) during 8, 16, 24 and 72 h. The eels plasma cortisol, glucose and lactate were measured. A significant decrease in plasma cortisol was observed at 72 h exposure to 0.9 and 2.7 μM Re. DHAA (0.1 μM) significantly decreased plasma cortisol in eels after 8 and 24 h exposure. However, a significant plasma cortisol increase was found after 16 h, 2.7 μM AA exposure and after 24 h exposure to 0.1 μM and 2.7 μM AA. Furthermore, 72 h exposure to 0.9 μM AA also induced a plasma cortisol increase. A general rise in plasma glucose was detected after all exposure periods to Re. The plasma lactate also increased after 72 h exposure to 2.7 μM AA and after 8 h exposure to 0.1 μM DHAA.