Habitat-based density models for three cetacean species off southern California illustrate pronounced seasonal differences

Becker, Elizabeth A.; Forney, Karin A.; Thayre, Bruce J.; Debich, Amanda J.; Campbell, Gregory S.; Whitaker, Katherine; Douglas, Annie B.; Gilles, Anita; Hoopes, Ryan; Hildebrand, John A.
Frontiers in Marine Science (2017)

Managing marine species effectively requires spatially and temporally explicit knowledge of their density and distribution. Habitat-based density models, a type of species distribution model (SDM) that uses habitat covariates to…


Variation in sexual behaviors in a group of captive male Yangtze finless porpoises (Neophocaena phocaenoides asiaeorientalis): Motivated by physiological changes?

Wu, Hai-Ping; Hao, Yu-Jiang; Yu, Xue-Ying; Xian, Yi-Jie; Zhao, Qing-Zhong; Chen, Dao-Quan; Kuang, Xin-An; Kou, Zhang-Bin; Feng, Kang-Kang; Gong, Wei-Ming; Wang, Ding
Theriogenology (2010)

Most male mammals in temperate regions demonstrate seasonal sexual behaviors that coincide with seasonal variations in gonadal activities and androgen hormones. The Yangtze finless porpoise is a temperate freshwater cetacean…


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]),…


Diet composition and food consumption rate of harbor porpoises (Phocoena phocoena) in the western Baltic Sea

Andreasen, Heidi; Ross, Stine D.; Siebert, Ursula; Andersen, Niels G.; Ronnenberg, Katrin; Gilles, Anita
Marine Mammal Science (2017)

Stomach content composition and prey-specific consumption rates of juvenile and adult harbor porpoises (Phocoena phocoena) were estimated from a data set including 339 stomachs collected over a 32 yr period…


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…