Results 181 to 190 of about 7,925 (202)

Impacts of Anthropogenic Sounds on Phocoena phocoena (Harbor Porpoise)

2012
Anthropogenic underwater sound in the seas and oceans is increasing. Phocoena phocoena (harbor porpoise) is sensitive to underwater sound because of its very acute hearing, wide hearing frequency range, and high responsiveness to sounds. The detection of sounds by animals and the degree to which sounds have an effect on animals involve the ...
Ronald, Kastelein, Nancy, Jennings
openaire   +2 more sources

Prey capture by harbor porpoises

2009
  The harbor porpoise (Phocoena phocoena) is a small toothed whale living mostly in coastal waters.  There are large, but unknown, numbers in the inner Danish waters. Four are in captivity at Fjord & Bælt, Kerteminde, Denmark, one of which was born here in 2006.
Miller, Lee, Verfuss, Ursula
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Target detection by an echolocating harbor porpoise (Phocoena phocoena)

The Journal of the Acoustical Society of America, 1999
Two echolocation experiments are described. They were conducted on the same harbor porpoise housed in a sea pen, one year apart at Neeltje Jans, The Netherlands. The aims were to determine the target detection ability of an echolocating harbor porpoise, with the ultimate goal to predict the distance at which harbor porpoises can detect fishing nets. In
R A, Kastelein, W W, Au, H T, Rippe, N M, Schooneman   +3 more
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Harbor Porpoise and Fisheries: An Uncertainty Analysis of Incidental Mortality

Ecological Applications, 1998
The harbor porpoise (Phocoena phocoena) in the western North Atlantic is subject to mortality due to entanglement in gillnets. Such incidental mortality threatens a population if it is too large relative to the potential population growth rate. Critical values for incidental mortality have been established by the International Whaling Commission and ...
Hal Caswell, Solange Brault, Andrew J. Read, Tim D. Smith   +3 more
openaire   +1 more source

Vaginal Calculi in a Juvenile Harbor Porpoise (Phocoena phocoena)

Journal of Zoo and Wildlife Medicine, 2011
A large number of vaginal calculi were observed in a juvenile harbor porpoise (Phocoena phocoena) stranded on Whidbey Island, Washington. Vaginal calculi have been reported in other species, but not in harbor porpoises. Histologic examination of the urinary tract revealed mucosal hyperplasia most likely attributable to the calculi.
Stephanie A, Norman, Michael M, Garner, Susan, Berta, Sandra, Dubpernell, Matthew, Klope   +4 more
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Notes on a Specimen of the Harbor Porpoise

Journal of Mammalogy, 1957
On May 20, 1955, a small whale was washed ashore at Stillwater Cove, Pebble Beach, Monterey County, California (36°34′N, 121°56′W). Thomas N. Fast, Dr. Elliot C. Williams, and Eric Barham from the Hopkins Marine Station of Stanford University secured the animal while it was still alive and brought it back to the laboratory where it was identified as a ...
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The stomach of the harbor porpoise Phocoena phocoena (L.)

Canadian Journal of Zoology, 1972
The morphological and cytological characteristics of the stomach of the harbor porpoise (Phocoena phocoena (L.)) are described from dissections and histological preparations. The stomach consists of the following three compartments: forestomach, with keratinized stratified squamous epithelium and well-developed muscularis externa; main stomach, with ...
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Effects of Offshore Pile Driving on Harbor Porpoises (Phocoena phocoena)

2012
The world’s growing demand for sustainable and environmentally friendly energy has led a growing number of countries to explore the options for the installation of offshore wind farms. In particular, noise emissions during the construction phase, when, in many cases, steel foundations are driven into the seafloor, are expected to cause temporal ...
Miriam J, Brandt, Ansgar, Diederichs, Klaus, Betke, Georg, Nehls   +3 more
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Wing design and morphology of the harbor porpoise dorsal fin

Journal of Morphology, 2003
AbstractThe correlation between skin structure and hydrodynamic design of the dorsal fin of the harbor porpoise (Phocoena phocoena) was examined. For the study of fin morphology and geometry, a scheme of sampling representing a two‐parameter mesh on the fin surface was used.
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Notes on a Female Harbor Porpoise

Journal of Mammalogy, 1959
Aryan I. Roest, William Thurmond, David H. Montgomery   +2 more
openaire   +1 more source