Marine Mammal Science (2011)
Bycatch in artisanal gill nets threatens the vaquita, Phocoena sinus, with extinction. In 2008 the Mexican government announced a conservation action plan for this porpoise, with three options for a…
Investigations of thyroid and stress hormones in free-ranging and captive harbor porpoises (Phocoena phocoena): A pilot study
Siebert, Ursula; Pozniak, Blazej; Anderson Hansen, Kirstin; Nordstrom, Gwyneth; Teilmann, Jonas; van Elk, Niels; Vossen, Arndt; Dietz, Rune;
Aquatic Mammals (2011)
Increasing anthropogenic activities in the marine environment are potential threats to the health of harbor porpoises by causing unnatural continuous stress to the animals. The present study was a first…
The use of an air bubble curtain to reduce the received sound levels for harbor porpoises (Phocoena phocoena)
Lucke, Klaus; Lepper, Paul A.; Blanchet, Marie-Anne; Siebert, Ursula
The Journal of the Acoustical Society of America (2011)
In December 2005 construction work was started to replace a harbor wall in Kerteminde harbor, Denmark. A total of 175 wooden piles were piled into the ground at the waters…
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…
Swimming patterns of wild harbour porpoises Phocoena phocoena show detection and avoidance of gillnets at very long ranges
Nielsen, T.P.; Wahlberg, M.; Heikkilä, S.; Jensen, M.; Sabinsky, P.; Dabelsteen, T.
Marine Ecology Progress Series (2012)
Harbour porpoises Phocoena phocoena are unintentionally caught in gillnets. Although the effectiveness of by-catch mitigation measures has been evaluated many times, only a few studies have investigated the behavioural patterns…
Acoustic gaze adjustments during active target selection in echolocating porpoises
Wisniewska, D. M.; Johnson, M.; Beedholm, K.; Wahlberg, M.; Madsen, P. T.
Journal of Experimental Biology (2012)
Visually dominant animals use gaze adjustments to organize perceptual inputs for cognitive processing. Thereby they manage the massive sensory load from complex and noisy scenes. Echolocation, as an active sensory…
The development of spatial positions between mother and calf of Yangtze finless porpoises (Neophocaena asiaeorientalis asiaeorientalis) maintained in captive and seminatural environments
Xian, Yijie; Wang, Kexiong; Jiang, Wenhua; Zheng, Bangyou; Wang, Ding
Aquatic Mammals (2012)
For many toothed whales, two predominant and multifunctional spatial positions occur between a mother/calf pair after birth: (1) the echelon position and (2) the infant position. Other nonpredominant positions also…
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…
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…
First records of anomalously white harbour porpoises (Phocoena phocoena) in the Turkish seas with a global review
Tonay, Arda M.; Bilgin, Sabri; Dede, Ayhan; Akkaya, Aylin; Yeşilçiçek, Tuncay; Köse, Özay; Ceylan, Yusuf
Hystrix - The Italian Journal of Mammalogy (2012)
Three anomalously white harbour porpoises (Phocoena phocoena) were reported from Turkish Seas. One of them was bycaught on 19 June 2011 in bottom gill nets off the eastern coast of…