Immediate early gene (ZENK) responses to song in juvenile female and male zebra finches: Effects of rearing environment

Wiley - Tập 66 Số 11 - Trang 1175-1182 - 2006
Michelle L. Tomaszycki1, Emily M. Sluzas1, Kristy A. Sundberg1, Sarah Winans Newman1, Timothy J. DeVoogd1
1Department of Psychology, Uris Hall, Cornell University, Ithaca, New York 14853

Tóm tắt

Abstract

Accurate song perception is likely to be as important for female songbirds as it is for male songbirds. Male zebra finches (Taeniopygia guttata) show differential ZENK expression to conspecific and heterospecific songs by day 30 posthatch in auditory perceptual brain regions such as the caudomedial nidopallium (NCM) and the caudomedial mesopallium (CMM). The current study examined ZENK expression in response to songs of different qualities at day 45 posthatch in both sexes. Normally reared juvenile zebra finches showed higher densities of immunopositive nuclei in both the dorsal and ventral areas of NCM and CMM (formerly cmHV), but not HA, a visual area, in response to normal song over untutored song or silence. Male and female patterns of ZENK expression did not differ. We next compared responses of birds reared without exposure to normal song (untutored) to those of normally reared birds. Untutored birds did not show higher responses to normal song than to untutored song in the three song perception areas. Furthermore, untutored birds of both sexes showed lower densities of immunopositive nuclei in all four areas than did normally reared birds. In addition, ZENK expression was greater in untutored females than in males in the dorsal portion of NCM and in CMM. Our findings suggest that at least some neural mechanisms of song perception are in place in socially reared female and male finches at an early age. Furthermore, early exposure to song tutors affects responses to song stimuli. © 2006 Wiley Periodicals, Inc. J Neurobiol 66: 1175–1182, 2006

Từ khóa


Tài liệu tham khảo

10.1002/neu.10070

10.1016/S0169-328X(03)00288-2

10.1016/j.bbr.2005.03.016

10.1073/pnas.030539097

10.1002/1097-4695(200101)46:1<48::AID-NEU5>3.0.CO;2-3

10.1038/nrn1606

10.1016/S0896-6273(00)80396-7

10.1016/j.anbehav.2003.12.025

10.1002/cne.20591

10.1002/neu.20135

10.1007/s00359-003-0441-z

10.1016/S0003-3472(82)80059-6

10.1523/JNEUROSCI.14-11-06652.1994

10.1523/JNEUROSCI.15-10-06919.1995

10.1196/annals.1298.021

10.1073/pnas.89.15.6818

10.1038/280389a0

10.1037/h0077553

10.1002/cne.20118

10.1163/157075603769700304

10.1098/rspb.2001.1930

10.1098/rspb.2002.2180

10.1126/science.1058522

Terpstra NJ, 2004, An analysis of the neural representation of birdsong memory, J Neurosci, 24, 4971, 10.1523/JNEUROSCI.0570-04.2004

10.1016/j.anbehav.2005.01.010

10.1002/(SICI)1096-9861(19960318)366:4<613::AID-CNE5>3.0.CO;2-7