Results 181 to 190 of about 2,945 (211)

Underwater acoustic signals of the narwhal (Monodon monoceros)

Canadian Journal of Zoology, 1978
Underwater sound recordings of the narwhal from northern Baffin Island are analyzed and described. Frequency ranges of pulsed and pure tone vocalizations are found to be somewhat greater than previously observed. An earlier report that narwhals generate exclusively narrowband sounds is confirmed.
John K. B. Ford, H. Dean Fisher
openaire   +1 more source

The narwhal (Monodon monoceros) cementum–dentin junction: A functionally graded biointerphase

Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 2014
In nature, an interface between dissimilar tissues is often bridged by a graded zone, and provides functional properties at a whole organ level. A perfect example is a “biological interphase” between stratified cementum and dentin of a narwhal tooth.
Kathryn, Grandfield, Netta Lev-Tov, Chattah, Sabra, Djomehri, Naomi, Eidelmann, Frederick C, Eichmiller, Samuel, Webb, P James, Schuck, Martin, Nweeia, Sunita P, Ho   +8 more
openaire   +2 more sources

Some characteristics of narwhal,Monodon monoceros, diving behaviour in Baffin Bay

Canadian Journal of Zoology, 1995
Dive data were collected from nine narwhals, Monodon monoceros, instrumented with satellite-linked dive recorders in northwest Greenland in August–September 1993 and 1994. Data were collected for periods ranging from a few weeks to 9 months. The narwhals made daily dives to depths of more than 500 m and frequently dived to 1000 m or more. However, most
Heide-Jørgensen, M. P., Dietz, R.
openaire   +3 more sources

An ultrastructural and fluorescence histochemical investigation of the innervation of retial arteries in Monodon monoceros

Journal of Morphology, 1981
AbstractIn this study, the innervation of cerebrally related retial arteries in the narwhal Monodon monoceros was examined. Vessels were processed for the demonstration of adrenergic nerve endings by fluorescence histochemistry, and the results were confirmed by electron microscopy. Innervation of cerebrally related retial arteries was compared to that
A W, Vogl, Mary E, Todd, H D, Fisher
openaire   +2 more sources

THE NARWHAL, MONODON MONOCEROS, IN THE NORWEGIAN HIGH ARCTIC

Marine Mammal Science, 1991
AbstractNarwhals (Monodon monoceros) are known to frequent the waters of the Norwegian arctic archipelago of Svalbard. An attempt is made to summarize narwhal observations from the Svalbard area, and from this to deduce their distribution. Observations have been gathered from the literature, sealing vessel log books and official statistics.
openaire   +1 more source

The manus of the Narwhal,Monodon monocerosL.

Proceedings of the Zoological Society of London, 1954
SummaryThe flipper of the Narwhal has been investigated in foetal and adult stages, with special reference to the carpus.In the foetus, radiale, intermedium and ulnare, a single centrale, trapezoid, magnum and separate distal carpals 4 and 5 are present. There is no trace of a pisiform or of a trapezium. The centrale fuses with the intermedium.
openaire   +1 more source

Monodon monoceros

Mammalian Species, 1980
Randall R. Reeves, Sharon Tracey
openaire   +1 more source

The tuskal pulp of the narwhal, Monodon monoceros

Oral Surgery, Oral Medicine, Oral Pathology, 1977
P R, Dow, M J, Hollenberg
openaire   +2 more sources

Narwhal Monodon monoceros (Linnaeus, 1758)

2022
Charla J. Basran, Marianne H. Rasmussen
openaire   +1 more source

The skull of the foetal narwhal, Monodon monoceros L

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, 1950
Abstract Understanding of the evolution of the mammalian orders and families, and of the relationships between members of an order, is often illuminated by a study of the development of the skull in the foetus. This account is the first description of the foetal narwhal.
openaire   +2 more sources