Acoustical variations in sexually dimorphic features of distance calls in domesticated zebra finches (Taeniopygia guttata castanotis) |
| |
Authors: | Kazuo Okanoya Tomoko Yoneda Tadashi Kimura |
| |
Institution: | (1) Life Science Institute, Sophia University, 7-1 Kioicho, Chiyoda-ku, 102 Toky, Japan;(2) Bird Control Laboratory, National Agriculture Research Center, 3-1-1 Kannondai, 305 Tsukuba, Japan;(3) Present address: Department of Zoology, Kyoto University, Sakyo-ku, 606-01 Kyoto, Japan;(4) Present address: Mitsubishi Kasei Corporation, Research Center, 1000, Kamoshida-cho, Midori-ku, 227 Yokohama, Japan |
| |
Abstract: | Species-specific distance calls (DCs) were recorded from Zebra finches (Taeniopygia guttata castanotis) obtained from three different breeding stocks: Japanese breeders that use Bengalese finches as fostering parents, and Japanese
and American breeders that let natural parents rear Zebra finches. These calls were analyzed for five acoustic parameters
that were shown to be sexually dimorphic in wild Zebra finches. Male Zebra finches had DCs that were variable among breeding
stocks and among individuals. Female DCs recorded from Bengalese-fostered birds were generally longer in duration and higher
in pitch than those recorded from Zebra-finch-reared birds, males and females in each breeding stock differed in at least
one acoustic parameter, but that parameter was unique in each of the breeding stocks. These results suggest that although
sexual dimorphism in Zebra finch DCs has gradually disappeared during the process of domestication, at least one acoustic
attribute which allows discrimination between the calls of the sexes has been preserved. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|