Heart rate and startle responses in diving, captive harbour porpoises

In the second exposure, the decrease in fH was smaller, and from the third exposure, a response was not detected. [...] The porpoises were housed in a 15×35 m net-pen under permits seems that the dive response of the harbour porpoises overrides from the Danish Council for Experiments on Animals and the Ministry of potential sympathetic startle waves, or that they have evolved to Environment and Food of Denmark (SN 343/FY-0014 and 1996-3446- decouple cardiovascular changes from autonomous startle reflexes. [...] The electrode on the right side depth to assess and escape, while paradoxically potentially putting was placed rostral to the heart and the left electrode was placed caudal to the heart. [...] Such a pulse has characteristics similar to many echosounder For each session, a trainer was located at one end of the pool, and a pulses, and to pulses that have been broadly applied in the literature to playback station with underwater speakers at 1 m depth was located at the induce the acoustic startle response in a range of animals (e.g. [...] The end of the pool to eat a dead fish that was thrown approximately 1 m in front control time points relative to the buzz were then selected at random from a of the speaker by a second person.