REACTIONS OF CAPTIVE HARBOR PORPOISES (<i>PHOCOENA PHOCOENA</i>) TO PINGER‐LIKE SOUNDS

Teilmann, Jonas; Tougaard, Jakob; Miller, Lee A.; Kirketerp, Tim; Hansen, Kirstin Anderson; Brando, Sabrina

doi:10.1111/j.1748-7692.2006.00031.x

Cited by 51 publications

(44 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conversely, some studies have described an increase in vocalisation by pilot whales during noise exposure (Rendell & Gordon 1999). Two studies also addressed this issue in harbour porpoises: Koschinski et al (2003) found no significant difference in the use of echolocation by porpoises when subjected to turbine noise; Teilmann et al (2006) found echolocation activity of harbour porpoises to decrease in 3 out of 25 sessions when various frequency sounds with a source level of 153 dB re 1 µPa (rms) were played back to them. Although during this study, porpoises in the vicinity of pile driving might have reduced echolocation activity as a response to the sound of pile driving, we see no convincing reason why animals that rely on their sonar for orientation and foraging should cease doing so for over 20 h after pile driving noise stopped.…”

Section: Discussionmentioning

confidence: 99%

Responses of harbour porpoises to pile driving at the Horns Rev II offshore wind farm in the Danish North Sea

Brandt¹,

Diederichs²,

Betke³

et al. 2011

Mar. Ecol. Prog. Ser.

181

131

View full text Add to dashboard Cite

Pile driving during offshore windfarm construction goes along with considerable noise emissions that potentially harm marine mammals in the vicinity and may cause large scale disturbances. Information on the scale of such disturbances is limited. Therefore, assessment and evaluation of the effects of offshore construction on marine mammals is difficult. During summer 2008, 91 monopile foundations were driven into the seabed during construction of the offshore wind farm Horns Rev II in the Danish North Sea. We investigated the spatial and temporal scale of behavioural responses of harbour porpoises Phocoena phocoena to construction noise using passive acoustic monitoring devices (T-PODs) deployed in a gradient sampling design. Porpoise acoustic activity was reduced by 100% during 1 h after pile driving and stayed below normal levels for 24 to 72 h at a distance of 2.6 km from the construction site. This period gradually decreased with increasing distance. A negative effect was detectable out to a mean distance of 17.8 km. At 22 km it was no longer apparent, instead, porpoise activity temporarily increased. Out to a distance of 4.7 km, the recovery time was longer than most pauses between pile driving events. Consequently, porpoise activity and possibly abundance were reduced over the entire 5 mo construction period. The behavioural response of harbour porpoises to pile driving lasted much longer than previously reported. This information should be considered when planning future wind farm construction.

show abstract

Section: Discussionmentioning

confidence: 99%

Responses of harbour porpoises to pile driving at the Horns Rev II offshore wind farm in the Danish North Sea

Brandt¹,

Diederichs²,

Betke³

et al. 2011

Mar. Ecol. Prog. Ser.

181

131

View full text Add to dashboard Cite

show abstract

“…In every case of which we are aware, when a diving animal was stressed, altered ascent and dove deeper, or was unable to access the surface to breathe, the animal maintained the apneic bradycardia or responded with a further decrease in heart rate (Andrews et al, 1997;Dormer et al, 1977;Fedak et al, 1988;Furilla and Jones, 1987;Jobsis et al, 2001;Kvadsheim et al, 2010;Lyamin et al, 2016;Meir et al, 2008;Murdaugh et al, 1961). Despite an increase in body acceleration and prolonged breathholding on exposure to pinger-like sounds, a marked bradycardia also occurred in harbor porpoises (Phocoena phocoena) (Teilmann et al, 2006). In addition, a stressed beluga whale (Delphinapterus leucas), diving with harpoon ECG leads and towing a 1200-pound boat, had a bradycardia of 12 to 24 beats min −1 (King et al, 1953).…”

Section: Discussionmentioning

confidence: 99%

Heart rate regulation in diving sea lions: the vagus nerve rules

Ponganis

McDonald

Tift

et al. 2017

Journal of Experimental Biology

View full text Add to dashboard Cite

Recent publications have emphasized the potential generation of morbid cardiac arrhythmias secondary to autonomic conflict in diving marine mammals. Such conflict, as typified by cardiovascular responses to cold water immersion in humans, has been proposed to result from exercise-related activation of cardiac sympathetic fibers to increase heart rate, combined with depth-related changes in parasympathetic tone to decrease heart rate. After reviewing the marine mammal literature and evaluating heart rate profiles of diving California sea lions (Zalophus californianus), we present an alternative interpretation of heart rate regulation that de-emphasizes the concept of autonomic conflict and the risk of morbid arrhythmias in marine mammals. We hypothesize that: (1) both the sympathetic cardiac accelerator fibers and the peripheral sympathetic vasomotor fibers are activated during dives even without exercise, and their activities are elevated at the lowest heart rates in a dive when vasoconstriction is maximal, (2) in diving animals, parasympathetic cardiac tone via the vagus nerve dominates over sympathetic cardiac tone during all phases of the dive, thus producing the bradycardia, (3) adjustment in vagal activity, which may be affected by many inputs, including exercise, is the primary regulator of heart rate and heart rate fluctuations during diving, and (4) heart beat fluctuations (benign arrhythmias) are common in marine mammals. Consistent with the literature and with these hypotheses, we believe that the generation of morbid arrhythmias because of exercise or stress during dives is unlikely in marine mammals.

show abstract

“…, a liberal estimate based on Teilmann et al (2006) and the maximum number of strikes allowed for each track was 15.…”

Section: à2mentioning

confidence: 99%

Passive acoustic methods for fine-scale tracking of harbour porpoises in tidal rapids

Macaulay

Gordon

Gillespie

et al. 2017

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

The growing interest in generating electrical power from tidal currents using tidal turbine generators raises a number of environmental concerns, including the risk that marine mammals might be injured or killed through collision with rotating turbine blades. To understand this risk, information on how marine mammals use tidal rapid habitats and in particular, their underwater movements and dive behaviour is required. Porpoises, which are the most abundant small cetacean at most European tidal sites, are difficult animals to tag, and the limited size of tidal habitats means that any telemetered animal would be likely to spend only a small proportion of time within them. Here, an alternative approach is explored, whereby passive acoustic monitoring (PAM) is used to obtain fine scale geo-referenced tracks of harbour porpoises in tidal rapid areas. Large aperture hydrophone arrays are required to obtain accurate locations of animals from PAM data and automated algorithms are necessary to process the large quantities of acoustic data collected on such systems during a typical survey. Methods to automate localisation, including a method to match porpoise detections on different hydrophones and separate different vocalising animals, and an assessment of the localisation accuracy of the large aperture hydrophone array are presented.

show abstract

REACTIONS OF CAPTIVE HARBOR PORPOISES (PHOCOENA PHOCOENA) TO PINGER‐LIKE SOUNDS

Cited by 51 publications

References 13 publications

Responses of harbour porpoises to pile driving at the Horns Rev II offshore wind farm in the Danish North Sea

Responses of harbour porpoises to pile driving at the Horns Rev II offshore wind farm in the Danish North Sea

Heart rate regulation in diving sea lions: the vagus nerve rules

Passive acoustic methods for fine-scale tracking of harbour porpoises in tidal rapids

Contact Info

Product

Resources

About