Comparative analysis of mineralocorticoid receptor expression among vocal learners (Bengalese finch and budgerigar) and non-vocal learners (quail and ring dove) has implications for the evolution of avian vocal learning
Version of Record online: 20 OCT 2011
© 2011 The Authors. Development, Growth & Differentiation © 2011 Japanese Society of Developmental Biologists
Development, Growth & Differentiation
Volume 53, Issue 9, pages 961–970, December 2011
How to Cite
Matsunaga, E., Suzuki, K., Kobayashi, T. and Okanoya, K. (2011), Comparative analysis of mineralocorticoid receptor expression among vocal learners (Bengalese finch and budgerigar) and non-vocal learners (quail and ring dove) has implications for the evolution of avian vocal learning. Development, Growth & Differentiation, 53: 961–970. doi: 10.1111/j.1440-169X.2011.01302.x
- Issue online: 14 DEC 2011
- Version of Record online: 20 OCT 2011
- Received 18 August 2011; revised 13 September 2011; accepted 13 September 2011.
- mineralocorticoid receptor;
Mineralocorticoid receptor is the receptor for corticosteroids such as corticosterone or aldosterone. Previously, we found that mineralocorticoid receptor was highly expressed in song nuclei of a songbird, Bengalese finch (Lonchura striata var. domestica). Here, to examine the relationship between mineralocorticoid receptor expression and avian vocal learning, we analyzed mineralocorticoid receptor expression in the developing brain of another vocal learner, budgerigar (Melopsittacus undulatus) and non-vocal learners, quail (Coturnix japonica) and ring dove (Streptopelia capicola). Mineralocorticoid receptor showed vocal control area-related expressions in budgerigars as Bengalese finches, whereas no such mineralocorticoid receptor expressions were seen in the telencephalon of non-vocal learners. Thus, these results suggest the possibility that mineralocorticoid receptor plays a role in vocal development of parrots as songbirds and that the acquisition of mineralocorticoid receptor expression is involved in the evolution of avian vocal learning.