TESTOSTERONE-INDUCED CHANGES OF CALL STRUCTURE, MIDBRAIN AND SYRINX ANATOMY IN PARTRIDGES

被引:37
作者
BEANI, L
PANZICA, G
BRIGANTI, F
PERSICHELLA, P
DESSIFULGHERI, F
机构
[1] UNIV FLORENCE, DIPARTIMENTO BIOL ANIM & GENET, I-50125 FLORENCE, ITALY
[2] UNIV TURIN, DEPT ANIM BIOL, TURIN, ITALY
[3] UNIV TURIN, DEPT HUMAN ANAT & PHYSIOL, TURIN, ITALY
关键词
GREY PARTRIDGE; TESTOSTERONE; VOCAL BEHAVIOR; NUCLEUS INTERCOLLICULARIS; SYRINX; BIOACOUSTIC ANALYSIS; QUANTITATIVE MORPHOMETRY;
D O I
10.1016/0031-9384(95)02060-8
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
Testosterone (T) treated Grey partridges (Perdix perdix) of both sexes uttered significantly longer and lower-pitched calls than controls; both these acoustic features play a critical role in mate choice. A morphometrical analysis of the midbrain nucleus intercollicularis showed a cell size increase in T-treated birds regardless of their sex. Histological study of the syrinx did not reveal any sexually dimorphic structure in experimental and control birds; the major T-induced change was a thickening of the external membranes, reported to be the main sound source in Galliforms. In conclusion, T appears able to modify not only some acoustic parameters, but also certain anatomical structures at the peripheral and central levels of the vocal system in a nonoscine species.
引用
收藏
页码:1149 / 1157
页数:9
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