Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Uldis Roze"'
Autor:
Uldis Roze
Porcupines are prickly and often misunderstood creatures—get the facts.Could a porcupine make a good pet? Do they ever stick themselves or other porcupines with their quills? In this latest addition to the Animal Answer Guide series, we learn about
Publikováno v:
Canadian Journal of Zoology.
This study examines the functional histology of the thin-spined porcupine's ( Chaetomys subspinosus (Olfers, 1818)) quills and integument, and compares them with the North American porcupine ( Erethizon dorsatum (Linnaeus, 1758)) equivalents. Erethiz
Publikováno v:
Canadian Journal of Zoology. 97:31-41
Scanning electron microscopy shows that the quill surface from the thin-spined porcupine (Chaetomys subspinosus (Olfers, 1818)) has several regional cuticular patterns of which the most expansive is highly pitted with 4 μm wide pores leading to pits
Autor:
Uldis Roze
Publikováno v:
Journal of Mammalogy. 83:381-385
Quill-withdrawal experiments confirm a hypothesis proposing that North American porcupines (Erethizon dorsatum) give up a quill more easily if the quill's root is first thrust back sharply into the porcupine's skin. The hypothesis was tested in 8 por
Publikováno v:
Journal of Chemical Ecology. 23:2737-2754
Volatile compounds in the lipid coating of the lower-back quills of the North American porcupine,Erethizon dorsatum, were collected using headspace trapping on Tenax and analyzed by gas chromatography–mass spectrometry (GC-MS), GC with organoleptic
Autor:
David M. Chapman, Uldis Roze
Publikováno v:
Canadian Journal of Zoology. 75:1-10
The histology of the porcupine's skin and subcutis is described. The functional relationships of the thoracic skin during elevation of the quills involve a smooth arrector muscle attached to quill sets, one set behind the other, with the muscle at a
Autor:
Roger A. Powell, Uldis Roze
Publikováno v:
The Journal of Wildlife Management. 55:356
Publikováno v:
Bulletin of the Torrey Botanical Club. 117:316
Autor:
Uldis Roze
Publikováno v:
Canadian Journal of Zoology. 65:981-986
Long-term radiotelemetry was used to study patterns of den use and winter movement in porcupines (Erethizon dorsatum) in New York. Six of eight animals used dens regularly; the rest spent most of their winters in the shelter of hemlock stands (Tsuga