Zusammenfassung
Bei domestizierten Wellensittichen wurde die Keimdrüsenreifung an jungen Männchen unter Langtag- und Kurztagbedingungen (LD 16:8 bzw. 8:16) verfolgt.
Im Alter von 3 1/2 bis 4 Monaten treten die ersten reifen Spermien auf. In der Kurztag-Gruppe scheint die Tendenz einer schwachen Entwicklungsverzögerung erkennbar.
Mit zunehmendem Alter vergrößert sich die anfangs geringe individuelle Variabilität erheblich.
Eine grundsätzliche fotoperiodische Steuerung bei der Gonadenentwicklung der Männchen kann nicht gefunden werden.
Die Ergebnisse werden diskutiert und mit Befunden bei anderen Arten verglichen.
Summary
In domesticated strains of budgerigars the testicular maturation has been investigated under conditions of long and short daily photoperiods.
At the age of 3 1/2 to 4 months, first mature sperms appear. In the short-day-group, the trend of a weak retardation seems to be visible.
The small individual variability in the young rapidly increases in the older birds.
No general capacity for a photoperiodic response could be proved in the males.
The results are discussed and compared with corresponding data of other species.
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Literatur
Aschoff, J. (1955): Jahresperiodik der Fortpflanzung bei Warmblütern. Studium Generale 8: 742–776.
Berthold, P. (1969): Über Populationsunterschiede im Gonadenzyklus europäischerSturnus vulgaris, Fringilla coelebs, Erithacus rubecula und Phylloscopus collybita und deren Ursachen. Zool. Jb. Syst. 96: 491–557.
Blanchard, B. D. (1941): The white crowned sparrow(Zonotrichia leucophrys) of the Pacific seaboard: Environment and annual cycle. Univ. Calif. Publ. Zool. 46/1
Brockway, B. (1967): The influence of vocal behavior on the performer's testicular activity in Budgerigars. Wilson Bull. 79: 328–334.
Burger, J. W. (1949): A review of experimental investigations on seasonal reproduction in birds. Wilson Bull. 61: 211–230.
(1953): The effect of photic and psychic stimuli on the reproductive cycle of the male starling,Sturnus vulgaris. J. exp. Zool. 124: 227–239.
Epple, A., G. H. Orians &D. S. Farner (1972): The photoperiodic testicular response of a tropical finch,Zonotrichia capensis costaricensis. Condor 74: 1–4.
Farner, D. S. (1970): Day lenght as environmental information in the control of reproduction of birds. 71–91. In: La photorégulation de la reproduction chez les oiseaux et les mammifères. Ed. J. Benoit,J. Assenmacher, Paris.
Ders. (1972): Breeding biology of birds. National Acad. Sci. Washington.
Farner, D. S., &R. Lewis (1971): Photoperiodism and reproductive cycles in birds. Photophysiol. 6: 325–370.
Farner, D. S. &A. C. Wilson (1957): A quantitative examination of testicular growth in the white crowned sparrow. Biol. Bull. Mar. biol. lab. Woods Hole 113: 254–267.
Lofts, B. &R. K. Murton (1968): Photoperiodic and physiological adaptations regulating avian breeding cycles and their ecological significance. J. Zool. Lond. 155: 327–394.
Miller, A. H. (1959): Response to experimental light increments by Andean sparrows from an equatorial area. Condor 61: 344–347.
(1965): Capacity for photoperiodic response and endogenous factors in the reproductive cycle of an equatorial sparrow. Zool. 54: 97–101.
Putman, R. J. &R. A. Hinde (1973): Effects of the light regime and breeding experience on budgerigar reproduction. J. Zool. 170: 475–484.
Sossinka, R. (1970): Domestikationserscheinungen beim ZebrafinkenTaeniopygia guttata castanotis. Zool. Jb. Syst. 97: 455–521.
(1975): Quantitative Untersuchungen zur sexuellen Reifung des Zebrafinken,Taeniopygia castanotis Gould. Verh. Dtsch. Zool. Ges. 68: 344–347.
Thapliyal, J. P. &S. Chatterji (1965): Juvenile phase in Weaver finch(Ploceus philippinus). J. Exp. Zool. 159: 203–208.
Tienhoven, A. van, C. Sutherland &R. R. Saatmann (1966): The effect of exposure to darkness on the reproductive and hypothalamo-hypophysial system of Budgerigars,Melopsittacus undulatus Gen. Comp. Endocrinol. 6: 420–427.
Vaugien, L. (1953): Sur l'apparition de la maturité sexuelle de jeunes perruches ondulées males soumis a diverses conditions d'eclairement. Bull. Biol. Fr. Belg. 87: 274–286.
Wyndham, E. (1974): Cere colour and the regulation of breeding in the budgerigar,Melopsittacus undulatus. 16th International Ornithological Congress Canberra, Australia.
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Pohl-Apel, G., Sossinka, R. Gonadenentwicklung beim Wellensittich,Melopsittacus undulatus unter verschiedenen Lichtbedingungen. J Ornithol 116, 207–212 (1975). https://doi.org/10.1007/BF01640956
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DOI: https://doi.org/10.1007/BF01640956