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2010 | 55 | 3 | 211-222
Tytuł artykułu

Hair density in the Eurasian otter Lutra lutra and the Sea otter Enhydra lutris

Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The hair density of adult Eurasian otters Lutra lutra (Linnaeus, 1758) and sea otters Enhydra lutris (Linnaeus, 1758) was analysed using skin samples taken from frozen carcasses. Lutra lutra exhibited a mean hair density of about 70 000 hairs/cm2 (whole body, appendages excepted), the mean individual density ranging from about 60 000 to 80 000 hairs/cm2. The dominant hair type were secondary hairs (wool hairs), the hair coat comprising only 1.26% of primary hairs (PH). Secondary hair (SH) density remained constant over the body (appendages excepted), whereas a few variations in PH density were observed. Neither an influence of the sex, nor a seasonal variation of the hair coat was found, moulting seems to be continuous. Enhydra lutris had a hair density between 120 000 and 140 000 hairs/cm2, the primary hairs representing less than 1% within the hair coat. Hair density remained quite constant over the regions of the trunk but was lower at the head (about 60 000 hairs/cm2 on the cheek). The hair follicles were arranged in specific groups with different bundles of varying size, normally comprising dominant numbers of wool hair (SH) follicles. Invariably there was always a large central primary hair follicle and numerous sebaceous glands between the bundles and principally around the PH follicles. The results are discussed related to possible ecological influences on hair coat density.
Wydawca
-
Czasopismo
Rocznik
Tom
55
Numer
3
Strony
211-222
Opis fizyczny
p.211-222,fig.,ref.
Twórcy
autor
  • University of Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany
autor
autor
autor
Bibliografia
  • Allain D. and Rougeot J. 1980. Induction of autumn moult in mink (Mustela vison) with melatonin. Reproduction Nutrition Development 20: 197–201.
  • Barabash-Nikiforov I. 1935. The sea otters of the Commander Islands. Journal of Mammalogy 16: 255–260.
  • Bassett C. F. and Llewellyn L. M. 1949. The moulting and fur growth pattern in the adult mink. The American Midland Naturalist 42: 751–756.
  • Bollhorn M. 1999. Histologische und histochemische Untersuchungen am Integument des Seehunds. PhD thesis, University of Veterinary Medicine Hannover, Hannover: 1–160.
  • Bubenik G. A. 1996. Morphological investigations of the winter coat in white tailed deer: Differences in skin, glands, and hairs structure of various regions. Acta Theriologica 41: 73–82.
  • Conrad F. and Paus R. 2004. Estrogens and the hair follicle. Journal der Deutschen Dermatologischen Gesellschaft 2: 412–423.
  • Dawson T. J. and Fanning F. D. 1981. Thermal and energetic problems of semiaquatic mammals: A study of the Australian water rat, including comparisons with the platypus. Physiological and Biochemical Zoology 54: 285–296.
  • De Jongh A. 1986. The underwater locomotion of the European otter (Lutra lutra l.). MSc thesis, State University of Groningen, Groningen: 1–97.
  • Estes J. A. and Bodkin J. L. 2002. Otters. [In: Encyclopedia of Marine Mammals. W. F. Perrin, B. Wuersig and J. G. M. Thewissen, eds]. Academic Press, San Diego — Tokyo: 842–858.
  • Fish F. E., Smelstoys J., Baudinette R. V. and Reynolds P. S. 2002. Fur does not fly, it floats: buoyancy of pelage in semi-aquatic mammals. Aquatic Mammals 28: 103–112.
  • Frisch J., Øristland N. A. and Krog J. 1974. Insulation of furs in water. Comparative Biochemistry and Physiology A 47: 403–410. doi: 10.1016/0300-9629(74)90002-4
  • Gerrits P. O. and Smid L. 1983. A new, less toxic polymerisation system for the embedding of soft tissues in glycol methacrylate and subsequent preparing of serial sections. Journal of Microscopy 132: 81–85.
  • Grant T. R. and Dawson T. J. 1978. Temperature regulation in the platypus, Ornithorhynchus anatinus: Production and loss of metabolic heat in air and water. Physiological and Biochemical Zoology 51: 315–322.
  • Hanstede J. G. and Gerrits P. O. 1983. The effects of embedding in water-soluble plastics on the final dimensions of liver sections. Journal of Microscopy 131: 79–86.
  • Harper R. J. and Jenkins D. 1982. Moult in the European Otter (Lutra lutra). Journal of Zoology, London 197: 298–299.
  • Heptner V. G. and Naumov N. P. 1974. Die Säugetiere der Sowjetunion, Vol II. Gustav Fischer Verlag, Jena: 837–885.
  • Johansen K. 1962. Buoyancy and insulation in the muskrat. Journal of Mammalogy 43: 64–68. doi: 10.2307/1376880
  • Johnson E. 1970. Moulting cycles. Mammal Review 1: 198–208. doi: 10.1111/j.1365-2907.1972.tb00091.x
  • Kaszowski S., Rust C. C. and Shackelford R. M. 1970. Determination of hair density in the mink. Journal of Mammalogy 51: 27–34.
  • Kenyon K. W. 1969. The Sea otter in the eastern Pacific Ocean. North American Fauna 68: 1–352.
  • Korhonen H. and Harri M. 1986. Comparison of hair coat structure between the raccoon dog and blue fox. Zeitschrift für Säugetierkunde 51: 281–288.
  • Kruuk H. 2006. Otters: ecology, behaviour and conservation. Oxford University Press, Oxford: 1–265.
  • Kuhn R. 2009. Comparative analysis of structural and functional hair coat characteristics, including heat loss regulation, in the Lutrinae (Carnivora: Mustelidae). PhD thesis, University of Hamburg, Hamburg: 1–225.
  • Ling J. K. 1970. Pelage and molting in wild animals with special reference to aquatic forms. Quarterly Review of Biology 45: 15–54.
  • Meyer W. 1986. Die Haut des Schweines (The porcine integument). Schlütersche Verlaganstalt, Hannover: 1–228. or]Meyer W. 2009. Hair follicles in domesticated mammals with comparison to laboratory animals and humans. [In: Hair Loss Disorders in Domestic Animals. L. Mecklenburg, M. Linek and D. J. Tobin, eds]. Blackwell Publishing, Ames: 43–62.
  • Meyer W., Neurand K. and Schwarz R. 1980. Der Haarwechsel der Haussäugetiere. II. Topographischer Ablauf, Vergleich Haustier-Wildtier und Steuerungsmechanismen. Deutsche Tierärztliche Wochenschrift 87: 96–102.
  • Meyer W., Seegers U. and Bock M. 2008. Annual secretional activity of the skin glands in the Southern pudu (Pudu puda Molina 1782, Cervidae). Mammalian Biology 73: 392–395. doi: 10.1016/j.mambio.2007.10.006
  • Meyer W., Seger H. and Hülmann G. 2002. SEM-Atlas on the Hair Cuticle Structure of Central European Mammals. Verlag Schaper, Alfeld-Hannover: 1–248.
  • Meyer W., Uhr G., Schwarz R. and Radke B. 1982. Untersuchungen an der Haut der Europäischen Wildkatze (Felis silvestris Schreber). II. Haarkleid. Zoologisches Jahrbuch Anatomie 107: 205–234.
  • Paus R. and Cotsarelis G. 1999. The biology of the hair follicles. New England Journal of Medicine 341: 491–497. doi: 10.1056/NEJM199908123410706
  • Reynolds P. S. 1993. Size, shape, and surface area of beaver, Castor canadensis, a semiaquatic mammal. Canadian Journal of Zoology 71: 876–882. doi: 10.1139/z93-114
  • Richardson K. C., Jarett L. and Finke E. H. 1960. Embedding in epoxy resins for ultrathin sectioning in electron microscopy. Stain Technology 35: 313–323.
  • Rogers G. E. 2006. Biology of the wool follicle: an excursion into a unique tissue interaction system waiting to be re-discovered. Experimental Dermatology 15: 931–940. doi: 10.1111/j.1600-0625.2006.00512.x
  • Ryder M. L. 1973. Hair. Institute of Biology. Camelot Press Ltd., London and Southampton: 1–58.
  • Scheffer V. B. 1964a. Estimating abundance of pelage fibres on fur seal skin. Proceedings of the Zoological Society of London 143: 37–41.
  • Scheffer V. B. 1964b. Hair patterns in seals (Pinnipedia). Journal of Morphology 115: 291–304. doi: 10.1002/j.mor. 1051150211
  • Sokolov W. 1962. Adaptations of the mammalian skin to the aquatic mode of life. Nature 195: 464–466. doi: 10.1038/ 195464a0
  • Sokolov V. E. 1982. Mammal Skin. University of California Press, Berkeley: 1–695.
  • Tänzer E. 1932. Haar- und Fellkunde. Reichs-Zentrale für Pelztier- und Rauchwaren-Forschung, Leipzig, Germany.
  • Tarasoff F. J. 1972. Comparative aspects of the hind limbs of the river otter, sea otter and seals. [In: Functional anatomy of marine mammals, Vol. 1. R. J. Harrison, ed]. Academic Press, London and New York: 333–359.
  • Tarasoff F. J. 1974. Anatomical adaptations in the River otter, sea otter and harp seal with reference to thermal regulation. [In: Functional anatomy of marine mammals, Vol. 2. R. J. Harrison, ed]. Academic Press, London: 111–141.
  • Tarasoff F. J., Bisaillon A., Piérard J. and Whitt A. P. 1972. Locomotory patterns and external morphology of the river otter, sea otter, and harp seal. Canadian Journal of Zoology 50: 915–929. doi: 10.1139/z72-124
  • Toldt K. 1933. Das Haarkleid der Pelztiere. Deutsche Gesellschaft für Kleintier- und Pelztierzucht, Leipzig: 1–291.
  • Tregear R. T. 1965. Hair density, wind speed and heat loss in mammals. Journal of Applied Physiology 20: 796–801.
  • Williams T. D., Allen D. D., Groff J. M. and Glass R. L. 1992. An analysis of California sea otter (Enhydra lutris) pelage and integument. Marine Mammal Science 8: 1–18.
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Bibliografia
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