Biosonar signal propagation in the harbor porpoise’s (Phocoena phocoena) head: The role of various structures in the formation of the vertical beam

Wei, Chong; Au, Whitlow W. L.; Ketten, Darlene R.; Song, Zhongchang; Zhang, Yu
The Journal of the Acoustical Society of America (2017)

Harbor porpoises (Phocoena phocoena) use narrow band echolocation signals for detecting and locating prey and for spatial orientation. In this study, acoustic impedance values of tissues in the porpoise's head…


Comparative physiology of vocal musculature in two odontocetes, the bottlenose dolphin (Tursiops truncatus) and the harbor porpoise (Phocoena phocoena)

Thometz, Nicole M.; Dearolf, Jennifer L.; Dunkin, Robin C.; Noren, Dawn P.; Holt, Marla M.; Sims, Olivia C.; Cathey, Brandon C.; Williams, Terrie M.
Journal of Comparative Physiology B (2017)

The mechanism by which odontocetes produce sound is unique among mammals. To gain insight into the physiological properties that support sound production in toothed whales, we examined myoglobin content ([Mb]),…


Responses of bottlenose dolphins and harbor porpoises to impact and vibration piling noise during harbor construction

Graham, Isla M.; Pirotta, Enrico; Merchant, Nathan D.; Farcas, Adrian; Barton, Tim R.; Cheney, Barbara; Hastie, Gordon D.; Thompson, Paul M.
Ecosphere (2017)

The development of risk assessments for the exposure of protected populations to noise from coastal construction is constrained by uncertainty over the nature and extent of marine mammal responses to…