TY - JOUR
T1 - Behavioural and morphological dose-responses to testosterone and to 5α-dihydrotestosterone in the castrated male Japanese quail
AU - Deviche, Pierre
AU - Schumacher, Michael
N1 - Funding Information:
We are indebted to Professor E. Schoffeniels for his continued interest in our work and to Professor J.C. Ruwet for permission to use the sound spec-tograph of his laboratory. This apparatus was provided to him by the National Fund for Scientific Research (F.N.R.S.) of Belgium. This investigation was partially supported by grant number 2.4544.76 from the Fonds de la Recherche Fondamentale Collective to Professor Schoffeniels. P. Deviche is Senior Research Assistant of the Belgian F.N.R.S. Thanks are due to Dr. J. Balthazart for valuable suggestions.
PY - 1982/6
Y1 - 1982/6
N2 - Morphological and behavioural effects of testosterone (T) and of 5 α-dihydrotestosterone (5α-DHT) injected daily for a 3-week period at dosages of 0.5, 1, 5 and 10 mg for T and 1 and 5 mg for α-DHT were studied in the adult male castrated Japanese quail. Injections of 0.5 or 1.0 mg T produced only slight development of the cloacal gland while the other four treatments stimulated growth which reached maximal or submaximal values. Testosterone injections stimulated sexual activities; some such effects were also observed after treatment with 5α-DHT. Although both steroids elicited crowing, there were qualitative differences between quails given 5α-DHT and those given T and intacts. These differences were not due to the development of the sternotracheal (syringeal) muscles, the weights of which were increased and reached similar values in the 5α-DHT and T (5 and 10 mg) treated males. These results are discussed in the context of our present knowledge of the mechanisms of regulation of reproduction processes by testosterone and its metabolites in birds.
AB - Morphological and behavioural effects of testosterone (T) and of 5 α-dihydrotestosterone (5α-DHT) injected daily for a 3-week period at dosages of 0.5, 1, 5 and 10 mg for T and 1 and 5 mg for α-DHT were studied in the adult male castrated Japanese quail. Injections of 0.5 or 1.0 mg T produced only slight development of the cloacal gland while the other four treatments stimulated growth which reached maximal or submaximal values. Testosterone injections stimulated sexual activities; some such effects were also observed after treatment with 5α-DHT. Although both steroids elicited crowing, there were qualitative differences between quails given 5α-DHT and those given T and intacts. These differences were not due to the development of the sternotracheal (syringeal) muscles, the weights of which were increased and reached similar values in the 5α-DHT and T (5 and 10 mg) treated males. These results are discussed in the context of our present knowledge of the mechanisms of regulation of reproduction processes by testosterone and its metabolites in birds.
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U2 - 10.1016/0376-6357(82)90020-1
DO - 10.1016/0376-6357(82)90020-1
M3 - Article
AN - SCOPUS:0019973915
SN - 0376-6357
VL - 7
SP - 107
EP - 121
JO - Behavioural processes
JF - Behavioural processes
IS - 2
ER -