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Showing 361-380 of 415 results

  1. Lipogenesis in the arctic euphausiid Thysanoessa inermis

    Biosynthesis of lipids by Thysanoessa inermis collected from Balsfjorden, northern Norway, in May 1980, was examined in vitro . The highest...

    R. J. Henderson, J. R. Sargent, S. Falk-Petersen in Marine Biology
    Article 01 July 1981

  2. Function of the Salt Gland

    The function of avian salt glands is now well known, although development of the present knowledge spans only two decades. Before the description by...
    Erik Skadhauge in Osmoregulation in Birds
    Chapter 1981

  3. Environmental control of seasonal breeding: a common final mechanism governing seasonal breeding and sexual maturation

    One of the more fascinating aspects of the reproductive process is the pattern of seasonal breeding. In a way, the evolution of seasonal breeding is...
    Fred J. Karsch, Douglas L. Foster in Environmental Factors in Mammal Reproduction
    Chapter 1981

  4. Circadian organization of an animal lacking a pineal organ; the young American alligator,Alligator mississippiensis

    Circadian rhythms were examined in young American alligators, Alligator mississippiensis , an animal that naturally lacks a pineal organ. Individual...

    Martin Kavaliers, Charles L. Ralph in Journal of comparative physiology
    Article 01 December 1980

  5. Seasonal activity and thermoregulation in Meriones unguiculatus: A gerbil's choice

    Mongolian gerbils were observed over seasonal changes in day length and temperature in an outdoor enclosure containing an extensive burrow system....

    Jan A. Randall, Del D. Thiessen in Behavioral Ecology and Sociobiology
    Article 01 November 1980

  6. N-acetyltransferase in the chick retina

    N-acetyltransferase activity (NAT) was measured in tissues of chicks exposed to light-dark treatments and to injections. The results support...

    Sue Binkley, Kathleen B. Reilly, Michael Hryshchyshyn in Journal of comparative physiology
    Article 01 June 1980

  7. Microperoxisomes and Catalase-Positive Particles

    Improved cytochemical methods for visualizing the peroxidatic activities of catalase (Fahimi 1969) by means of strong alkaline DAB media (Herzog and...
    Peter Böck, Robert Kramar, Margit Pavelka in Peroxisomes and Related Particles in Animal Tissues
    Chapter 1980

  8. Effect of removal of the Harderian glands on pineal melatonin concentrations in the Syrian hamster

    Peak melatonin levels which are normally present in male Syrian hamsters at 8 h after the onset of darkness in animals maintained under a light∶dark...

    Elizabeth S. Panke, R. J. Reiter, M. D. Rollag in Experientia
    Article 01 October 1979

  9. Concluding Remarks on Metabolic Aspects of Animal Peroxisomes

    In the preceding chapters a considerable number of metabolic capacities have been reported. On the other hand, the functions of animal peroxisomes...
    Peter Böck, Robert Kramar, Margit Pavelka in Peroxisomes and Related Particles in Animal Tissues
    Chapter 1980

  10. Melatonin affects circadian rhythmicity in lizards

    Subcutaneous Silastic capsules which continuously released melatonin at low rates (10 μg/day) either (i) lengthened the period of the freerunning...

    Herbert Underwood in Journal of comparative physiology
    Article 01 December 1979

  11. The presence of ecdysteroids and the variations of their level during the first adult stage of the myriapodHanseniella ivorensis Juberthie-Jupeau and Kehe (Symphyla)

    Adult individuals of the Symphyla Hanseniella ivorensis had their antennae cut off at the beginning of the first adult stage; this had the effect of...

    L. Juberthie-Jupeau, A. Strambi, ... C. Juberthie in Experientia
    Article 01 October 1979

  12. The adenohypophysial hormone content of the rat pars tuberalis

    The pars tuberalis of the hypophysis was shown to contain LH, which increases after castration, TSH and a very low amount of PRL. FSH was found after...

    Silvia Chafuen, M. A. Cannata in Experientia
    Article 01 October 1979

  13. White Spotting: Piebald, Lethal Spotting, and Belted

    The preceding chapters have been concerned almost entirely with the genetic control of melanin synthesis in melanocytes which are distributed...
    Willys K. Silvers in The Coat Colors of Mice
    Chapter 1979

  14. Dilute and Leaden, the p-Locus, Ruby-Eye, and Ruby-Eye-2

    Recessive mutations at two loci of the mouse produce coat-color deviants which are phenotypically very similar. One of these mutations, described...
    Willys K. Silvers in The Coat Colors of Mice
    Chapter 1979

  15. Blockade of voltage-dependent and Ca2+-dependent K+ current components by internal Ba2+ in molluscan pacemaker neurons

    Internal Ba 2+ blocks both the Ca-dependent component, as well as the voltage-dependent component of the K + current in molluscan pacemaker neurons.

    A. Hermann, A. L. F. Gorman in Experientia
    Article 01 February 1979

  16. Pigment aggregation by melatonin in the retinal pigment epithelium and choroid of guinea-pigs,Cavia porcellus

    The treatment of pigmented guinea-pigs with melatonin aggregates pigmented cells in the retinal pigment epithelium and choroid of the eye. This...

    S. F. Pang, D. T. Yew in Experientia
    Article 01 February 1979

  17. Microphthalmia and Other Considerations

    Besides dominant spotting (W) and steel (Sl) there is another series of alleles which frequently produce white spotting when heterozygous, and...
    Willys K. Silvers in The Coat Colors of Mice
    Chapter 1979

  18. Dominant Spotting, Patch, and Rump-White

    There are probably no coat color determinants which have received more attention than the alleles at the W-locus (chromosome 5). Most of this...
    Willys K. Silvers in The Coat Colors of Mice
    Chapter 1979

  19. Beige, Silver, Greying with Age, and Other Determinants

    Beige [bg; chromosome 13 (Lane, 1965)] is a recessive mutation affecting both coat and eye color. The mutation is of particular interest because it...
    Willys K. Silvers in The Coat Colors of Mice
    Chapter 1979

  20. Steel, Flexed-Tailed, Splotch, and Varitint-Waddler

    The alleles at the Sl locus (chromosome 10)1 are of special interest because, like those of the W-series, they too adversely affect melanogenesis,...
    Willys K. Silvers in The Coat Colors of Mice
    Chapter 1979
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