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Author  |
Bissonnette, T.H. |
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Title |
Modification of Mammalian Sexual Cycles |
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Journal Article |
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Year |
1935 |
Publication |
Journal of Experimental Biology |
Abbreviated Journal |
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12 |
Issue |
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Pages |
315-320 |
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Keywords |
Animals |
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Abstract |
1. Cases are given in which female ferrets, already coming into, or in, oestrus as the result of artificially increased lighting in winter and spring, underwent regression or were retarded in their activation by reduction of either intensity or duration of daily illumination.
2. In some cases activation was resumed when light time or intensity was increased again.
3. These results are taken to indicate that, in female ferrets, any inherent rhythm or cycle of sexual activity is modified either naturally or artificially by changes of the cycles of duration and intensity of the light to which they are exposed daily, and so made to correspond in phases with the seasons, or changed therefrom. The rising daily illumination in spring and the falling one in late summer and autumn probably accelerate and retard the sexual activity of the female ferret, or accelerate the onset of anoestrus in late summer and autumn.
4. The data on modification of sexual cycles or activity in ferrets, so far obtained, are consistent with these conclusions. |
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GFZ @ kyba @ |
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2397 |
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Author |
Bissonnette, T.H. |
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Title |
Modification of mammalian sexual cycles. V. The avenue of reception of sexually stimulating light |
Type |
Journal Article |
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Year |
1936 |
Publication |
Journal of Comparative Psychology |
Abbreviated Journal |
Journal of Comparative Psychology |
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22 |
Issue |
1 |
Pages |
93-103 |
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Animals |
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Abstract |
The author subjected female ferrets of controlled previous light and sexual history to added nightly lighting (1) without hoods, (2) with hoods which exposed the eyes through holes, and (3) with heads covered by light-tight hoods. The conditions of decreased light on the eyes were associated with delayed oestrus. “The facts indicate that the eyes are the receptors for photo-periodic sexual stimulation in ferrets, mediated by the anterior hypophysis, and that closing their eyes in sleep does not prevent the activation.” |
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0093-4127 |
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GFZ @ kyba @ |
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2400 |
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Author |
Bissonnette, T.H. |
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Title |
Studies on the sexual cycle in birds. I. Sexual maturity, its modification and possible control in the European starling (Sturnus vulgaris) |
Type |
Journal Article |
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Year |
1930 |
Publication |
American Journal of Anatomy |
Abbreviated Journal |
Am. J. Anat. |
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45 |
Issue |
2 |
Pages |
289-305 |
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0002-9106 |
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GFZ @ kyba @ |
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2402 |
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Author |
Bissonnette, T.H.; Csech, A.G. |
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Title |
Fertile Eggs from Pheasants in January by “Night-Lighting” |
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Journal Article |
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Year |
1936 |
Publication |
Bird-Banding |
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Volume |
7 |
Issue |
3 |
Pages |
108 |
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ISSN |
0006-3630 |
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no |
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Call Number |
GFZ @ kyba @ |
Serial |
2403 |
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Author |
BjÖRnberg, T.K.S.; Wilbur, K.M. |
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Title |
Copepod Phototaxis And Vertical Migration Influenced By Xanthene Dyes |
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Journal Article |
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Year |
1968 |
Publication |
The Biological Bulletin |
Abbreviated Journal |
The Biological Bulletin |
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Volume |
134 |
Issue |
3 |
Pages |
398-410 |
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Animals |
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1. Phototaxis of the copepods Paracalanus crassirostris, Calanopia americana, and Acartia lillijeborgi has been measured by determining the percentage of a population moving toward or away from a point source of light per unit time. Quantitative differences in positive phototaxis were found between the species. Photopositive responses differed during the day and night in Acartia but not in Paracalanus and Calanopia.
2. Rhodamine B (8.4 x 10-6 M) brought about the following effects: (a) Locomotor activity was reversibly inhibited in all species. (b) Photopositive responses were increased in Calanopia and Acartia but decreased in Paracalanus. (c) The difference between day and night responses to a point source of light was abolished in Acartia and induced in Calanopia. (d) Somersaulting was induced in Paracalanus but not in the other species.
3. Pyronine B (8.4 x 10-6 M) also decreased locomotor activity. Fluorescein sodium (1.1 x 10-5 M and 1.1 x 10-4 M) was without significant effect.
4. Paracalanus, Calanopia, and Acartia exhibited characteristically distinct diurnal migratory cycles in vertical cylinders, which correlated well with behavior in natural waters. Calanopia and Acartia migrated to the bottom in the daylight whereas Paracalanus and young forms of Acartia were widely distributed vertically during daylight. Specimens of Calanopia and Acartia kept in the dark did not migrate.
5. The effects of rhodamine B (8.4 x 10-6 M) on vertical migration depended upon species, developmental stage, and time of day. In general, rhodamine increased the concentration of animals at the surface at night and at the bottom in daylight. Fluorescein sodium (1.1 x 10-5 M and 1.1 x 10-4 M) had little effect on vertical migration.
6. The effectiveness of rhodamine B and pyronine B is probably related to the presence of diethylamine groups lacking in fluorescein. |
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0006-3185 |
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Call Number |
GFZ @ kyba @ |
Serial |
2469 |
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