Mar Mam Sci (2012)
This study presents bioacoustic recordings in combination with movements and diving behavior of three free-ranging harbor porpoises (a female and two males) in Danish waters. Each porpoise was equipped with…
Stereotypical rapid source level regulation in the harbour porpoise biosonar
Linnenschmidt, Meike; Kloepper, Laura N.; Wahlberg, Magnus; Nachtigall, Paul E.
Naturwissenschaften (2012)
Some odontocetes and bats vary both click intensity and receiver sensitivity during echolocation, depending on target range. It is not known how this so-called automatic gain control is regulated by…
Keeping returns optimal: gain control exerted through sensitivity adjustments in the harbour porpoise auditory system
Linnenschmidt, M.; Beedholm, K.; Wahlberg, M.; Hojer-Kristensen, J.; Nachtigall, P. E.
Proceedings of the Royal Society B: Biological Sciences (2012)
Animals that use echolocation (biosonar) listen to acoustic signals with a large range of intensities, because echo levels vary with the fourth power of the animal's distance to the target.…
Cetacean abundance estimates in US northwestern Atlantic Ocean waters from summer 2011 line transect survey
Palka, D.
NEFSC Reference Document 12-29 (2012)
As part of the AMAPPS (Atlantic Marine Assessment Program for Protected Species) project, the Northeast Fisheries Science Center (NEFSC) and Southeast Fisheries Science Center (SEFSC) of NOAA Fisheries Service conducted…
Severe progressive meningoencephalitis due to Cryptococcus sp. in a live-stranded harbor porpoise (Phocoena phocoena) undergoing rehabilitation
Haulena, M.; Himsworth, C.; Anderson, C.; Akhurst, L.; Ivančić, M.; Malpas, D.A.; Pollock, J.S.; Raverty, S.
Conference of the International Association for Aquatic Animal Medicine (2012)
Cryptococcus gatti is an important infectious disease in the northeastern Pacific. The condition has been associated with significant mortality in harbor porpoise (Phocoena phocoena), Dall’s porpoise (Phocoenoides dalli) and Pacific…
The modulation rate transfer function of a harbour porpoise (Phocoena phocoena)
Linnenschmidt, Meike; Wahlberg, Magnus; Damsgaard Hansen, Janni
Journal of Comparative Physiology A (2012)
During echolocation, toothed whales produce ultrasonic clicks at extremely rapid rates and listen for the returning echoes. The auditory brainstem response (ABR) duration was evaluated in terms of latency between…
Organization and number of orexinergic neurons in the hypothalamus of two species of Cetartiodactyla: A comparison of giraffe (Giraffa camelopardalis) and harbour porpoise (Phocoena phocoena)
Dell, Leigh-Anne; Patzke, Nina; Bhagwandin, Adhil; Bux, Faiza; Fuxe, Kjell; Barber, Grace; Siegel, Jerome M.; Manger, Paul R.
Journal of Chemical Neuroanatomy (2012)
The present study describes the organization of the orexinergic (hypocretinergic) neurons in the hypothalamus of the giraffe and harbour porpoise – two members of the mammalian Order Cetartiodactyla which is…
Rake marks on a harbor porpoise (Phocoena phocoena) calf suggestive of a fatal interaction with an Atlantic white-sided dolphin (Lagenorhynchus acutus)
Larrat, Sylvain; Measures, Lena N.; Lair, Stéphane;
Aquatic Mammals (2012)
(...) Little is known regarding other causes of mortality and population trends of harbor porpoises from the Estuary and Gulf of St. Lawrence. Harbor porpoises have been reported to be…
An unusual mortality event of Harbor porpoises (Phocoena phocoena) off central California: Increase in blunt trauma rather than an epizootic
Wilkin, Sarah; Cordaro, Joe; Gulland, Frances M. D.; Wheeler, Elizabeth; Dunkin, Robin; Sigler, Teri; Casper, Dave; Berman, Michelle; Flannery, Moe; Fire, Spencer; Wang, Zhihong; Colegrove, Kathleen; Baker, Jason
Aquatic Mammals (2012)
In 2007, the apparent increase in the number of harbor porpoises (Phocoena phocoena) stranding along the central California coast compared to the number of strandings the previous year resulted in…
The grey seal (Halichoerus grypus) as a predator of harbour porpoises (Phocoena phocoena)?
Haelters, Jan; Kerckhof, Francis; Jauniaux, Thierry; Degraer, Steven;
Aquatic Mammals (2012)
In September 2011, two harbour porpoises (Phocoena phocoena) presenting extensive traumatic lesions washed ashore in Belgium. Similar lesions, with large parts of skin and blubber missing, had not been recorded…