Genetic depletion of histamine from the nervous system of Drosophila eliminates specific visual and mechanosensory behaviorZeitschrift für vergleichende Physiologie - Tập 179 - Trang 763-773 - 1996
J. Melzig, S. Buchner, F. Wiebel, R. Wolf, E. Buchner, M. Burg, W. L. Pak
The role of histamine as a fast neuro-transmitter of imaginai insect photoreceptors is firmly established. In adult Drosophila, histamine is also found in mechanosensory receptors of cuticular hair sensilla and in a small number of nonreceptor neurons in head and body ganglia. Here we investigate the function of histamine by immunohistochemical and behavioral analysis of mutants deficient in the h...... hiện toàn bộ
Circadian organization in the pigeon,Columba livia: the role of the pineal organ and the eyeZeitschrift für vergleichende Physiologie - Tập 154 - Trang 59-69 - 1984
Shizufumi Ebihara, Keiko Uchiyama, Itsuki Oshima
The roles of the pineal organ and the eye in the control of circadian locomotor rhythmicity were studied in the pigeon (Columba livia). Neither pinealectomy nor blinding abolished the circadian rhythms in constant dim light conditions (LLdim). All the pinealectomized birds and the blinded birds entrained to light-dark (LD) cycles with no discernible anticipatory activity. However, the birds which ...... hiện toàn bộ
Visual acuity, contrast sensitivity and retinal magnification in a marsupial, the tammar wallaby (Macropus eugenii )Zeitschrift für vergleichende Physiologie - Tập 183 - Trang 379-387 - 1998
J. M. Hemmi, R. F. Mark
The visual acuity of the tammar wallaby was estimated using a behavioural discrimination task. The wallabies were trained to discriminate a high-contrast (86%) square-wave grating from a grey field of equal luminance (1000–6000 cd m−2). Visual-evoked cortical potentials were used to measure the complete contrast sensitivity function. The stimulus was a sinusoidal phase reversal of a sinusoidally ...... hiện toàn bộ
Physiological effects of visual contact to a conspecific inBlennius pholis (Pisces, Teleostei)Zeitschrift für vergleichende Physiologie - Tập 101 - Trang 237-242 - 1975
Peter Wirtz
Adult maleBlennius pholis were kept (a) isolated or (b) with visual contact to a male conspecific. For six weeks the fish were fed with a ration corresponding to 5% of their body weight daily. The weight of the fish was recorded weekly. Fish with visual contact to a conspecific had a lower rate of growth, a lower food conversion efficiency, a lower liver weight, a higher water content of the muscl...... hiện toàn bộ
Zur Entstehung der gelben und roten Gefiederfarben der VögelZeitschrift für vergleichende Physiologie - Tập 18 - Trang 696-708 - 1933
H. Giersberg, R. Stadie
Die gelben und roten Lipochromfarben des Gefieders der Vögel stammen aus der Nahrung. Bei völligem Entzug dieser Farben aus dem Futter blassen die Lipochromfarben daher völlig aus. Durch übernormale Darbietung von Carotinoidfarbstoffen läßt sich eine übernormal gesteigerte Lipochromfärbung der Federn erzielen, die je nach der Natur des verfütterten Farbstoffs (Capsanthin, Carotin) eine qualitativ ...... hiện toàn bộ