Complex Song Development and Stress Hormone Levels in the Bengalese Finch

  title={Complex Song Development and Stress Hormone Levels in the Bengalese Finch},
  author={Kenta Suzuki and Eiji Matsunaga and Hiroko Yamada and Tetsuya Kobayashi and Kazuo Okanoya},
  journal={Avian Biology Research},
  pages={10 - 17}
Models of birdsong are useful in the study of developmental and evolutional mechanisms of vocal learning behaviour. Knowledge of these mechanisms is important for understanding the evolutionary adaptation strategies of organisms. The Bengalese finch sings a complex song believed to have evolved by domestication because the song of its wild ancestor, the white-backed munia, was very simple. There is evidence that the song complexity is used as an indicator of male quality during mate selection… Expand

Figures from this paper

Behavioral and neural trade-offs between song complexity and stress reaction in a wild and a domesticated finch strain
It is suggested that phonological and syntactical complexity in Bengalese finch songs initially evolved because domestication freed them from species recognition and environmental stress, and then sexual selection increased the complexity. Expand
Evolution of song complexity in Bengalese finches could mirror the emergence of human language
The results of the present study on BFs should be useful in discussing the possible biological origins of human speech relating to proximate and ultimate factors and suggested that white-rumped munias have higher levels of stress and social shyness, which should be adaptive in natural environments, but could limit opportunities for learning complex songs. Expand
Like Father Like Son: Cultural and Genetic Contributions to Song Inheritance in an Estrildid Finch
It is suggested that high learning fidelity of song material, i.e., song structure and note characteristics, could allow novel variants to be preserved and accumulate over generations, with implications for evolution and conservation. Expand
Domestication effects on aggressiveness: Comparison of biting motivation and bite force between wild and domesticated finches
It is found that the Bengalese finch had decreased aggressiveness and bite force than those in the white-rumped munia due to domestication, which means they could allocate more resources for breeding that would otherwise be needed for coping with predators through aggression. Expand
Domestication effects on immune response: comparison of cell-mediated immune competence in wild and domesticated Bengalese finch
The Bengalese finch had a significantly larger immunocompetence than the white-rumped munia, indicating that they devote more resources to both immunity and reproduction, which may be related to the release from natural selection pressures. Expand
The face of animal cognition.
  • S. Healy
  • Psychology, Medicine
  • Integrative zoology
  • 2019
An overview of the productivity of animal cognition research is provided, alighting only briefly on any single example, to showcase the diversity of species, of approaches and the sheer mass of research effort currently under way. Expand
Effects of domestication on neophobia: A comparison between the domesticated Bengalese finch (Lonchura striata var. domestica) and its wild ancestor, the white-rumped munia (Lonchura striata)
Bengalese finches have reduced neophobic responses due to domestication, and the behavioural strategies of white-rumped munias appear to be more suitable for natural environments, which include unpredictable risks, whereas Bengalese Finches have likely adapted their behaviour to the conditions of artificial selection. Expand


Song as an honest signal of developmental stress in the zebra finch (Taeniopygia guttata)
The results demonstrate that both dietary restriction and elevated corticosterone levels significantly reduced nestling growth rates and that experimentally stressed birds developed songs with significantly shorter song motif duration and reduced complexity. Expand
Early Rearing Conditions Affect the Development of Body Size and Song in Bengalese Finches
Birdsong is an acoustic ornament. According to indicator models, a trait must be costly to act as an honest signal, but the potential costs of elaborate songs are still poorly understood. TheExpand
Developmental stress selectively affects the song control nucleus HVC in the zebra finch
The results explain how the complex song repertoires of songbirds can evolve as honest indicators of male quality and show that both environmental and genetic factors affect the development of several brain nuclei, highlighting the developmental plasticity of the songbird brain. Expand
Song Learning, Early Nutrition and Sexual Selection in Songbirds
A new hypothesis is presented for the adaptive significance of song learning in songbirds, suggesting that this specialized form of vocal development provides an indicator mechanism by which females can accurately assess the quality of potential mates. Expand
Behavioural Factors Governing Song Complexity in Bengalese Finches
Bengalese finches are the domesticated strain of the wild white-rumped munias. Bengalese finches had been domesticated for over 250 years from the wild strain white-rumped munias and during thisExpand
Song Function and the Evolution of Female Preferences: Why Birds Sing, Why Brains Matter
The developmental stress hypothesis is presented here to suggest how learned features of song, including complexity and local dialect structure, can serve as indicators of male quality useful to females in mate choice, with reliability maintained by the developmental costs of song. Expand
Parasites affect song complexity and neural development in a songbird
It is shown that adult male canaries, infected with malaria as juveniles, develop simpler songs as adults compared to uninfected individuals, and exhibit reduced development of the high vocal centre (HVC) song nucleus in the brain. Expand
Song as an honest signal of past developmental stress in the European starling (Sturnus vulgaris)
The hypothesis that both the quality and quantity of song produced by individual birds reflect past developmental stress is supported, and the 'nutritional–stress hypothesis' is best considered as a more general 'developmental– stress hypothesis'. Expand
Developmental stress impairs song complexity but not learning accuracy in non-domesticated zebra finches (Taeniopygia guttata)
It is found that song complexity when measured by a linear combination of six variables was reduced in food-restricted birds, with syllable rate and maximum syllable frequency as the principal variables affected, demonstrating that early nutrition may differentially affect the development of neural processes that influence learning accuracy and song complexity. Expand
The Bengalese Finch: A Window on the Behavioral Neurobiology of Birdsong Syntax
  • K. Okanoya
  • Biology, Medicine
  • Annals of the New York Academy of Sciences
  • 2004
It is hypothesize that mutations in the song control nuclei have occurred that enabled complex song syntax and became fixed into the population of domesticated Bengalese finches through a process of indirect sexual selection. Expand