Monitoring marine mammal populations is essential to permit assessment of population status as required by both national and international legislation. Traditional monitoring methods often rely on visual and/or acoustic detections from vessels and aircraft, but limitations including cost, errors in the detection of some species and dependence on taxonomic expertise, as well as good weather and visibility conditions often limit...

Progeny of sea bream Sparus aurata from parents selected for high or low cortisol response to stress also showed similar divergent cortisol response after 48 h of handling and confinement stress. The high response progeny, however, had a lower basal unstimulated cortisol release and ACTH‐stimulated cortisol output in vitro .

In red porgy Pagrus pagrus subjected to 3 weeks of chronic stress by crowding, plasma cortisol remained significantly higher in crowded fish compared to controls. There was no significant effect of crowding on plasma glucose levels. When the crowded fish were subjected to an acute handling the plasma cortisol response was similar to that of the uncrowded fish. No significant differences were found between the groups. The chang...