Effects of traffic noise exposure on corticosterone, glutathione and tonic immobility in chicks of a precocial bird.

摘要: Repeated exposure to traffic noise may be perceived as a succession of stressors, and therefore, noisy urban environments could lead state chronic stress. In developing animals, glucocorticoids can have organizational effects on the hypothalamic-pituitary-adrenal axis in addition classic activation effects, so evaluating effect during development is urgently needed. To our knowledge, date six studies investigated baseline corticosterone (CORT) and/or stress response birds development; however, these were performed nestling (altricial species), where confounding factors (e.g. communication between nestlings parents) mask real impact this study, we evaluated (traffic group vs. rural group) levels CORT responses chicks precocial bird species, Japanese quail (Coturnix japonica). Because also decrease glutathione (GSH) (antioxidant neurotransmitter/modulator), secondly by means path analysis whether strength association levels, GSH tonic immobility (TI) varied relation treatment. We observed (i) similar both groups, (ii) trend toward higher (P = 0.08), (iii) TI duration (iv) (v) differences sign associations treatment rural). conclude that acoustic environment has implications for physiology behaviour; more research done topic, need sustainable planning will become clearer.