Artículo
Open-field temporal pattern of ambulation in Japanese quail genetically selected for contrasting adrenocortical responsiveness to brief manual restraint
Kembro, Jackelyn Melissa
; Satterlee, Daniel G.; Schmidt, J. B.; Perillo, Maria Angelica
; Marin, Raul Hector
Fecha de publicación:
11/2008
Editorial:
Poultry Science Association
Revista:
Poultry Science
ISSN:
0032-5791
e-ISSN:
1525-3171
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Japanese quail selected for a low-stress (LS), rather than a high-stress (HS), plasma corticosterone response to brief restraint have been shown to possess lower fearfulness and a nonspecific reduction in stress responsiveness. Detrended fluctuation analysis provides information on the organization and complexity of temporal patterns of behavior. The present study evaluated the temporal pattern of ambulation of LS and HS quail in an open field that represented a novel environment. Time series of 4,200 data points were collected for each bird by registering the distance ambulated every 0.5 s during a 35-min test period. Consistent with their known reduced fearfulness, the LS quail initiated ambulation significantly sooner (P < 0.02) and tended to ambulate more (P < 0.09) than did their HS counterparts. Detrended fluctuation analyses showed a monofractal series (i.e., a series with similar complexity at different temporal scales) in 72% of the birds. These birds initiated their ambulatory activity in less than 600 s. Among these birds, a lower (P < 0.03) autosimilarity coefficient (α) was found in the LS quail than in their HS counterparts (α = 0.76 ± 0.03 and 0.87 ± 0.03, respectively), suggesting a more complex (less regular) ambulatory pattern in the LS quail. However, when the patterns of ambulation were reexamined by considering only the active period of the time series (i.e., after the birds had initiated their ambulatory activity), monofractal patterns were observed in 97% of the birds, and no differences were found between the lines. Collectively, the results suggest that during the active period of open-field testing, during which fear responses are likely less strong and other motivations are the driving forces of ambulation, the LS and HS lines have similar ambulatory organization.
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Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos(IIBYT)
Articulos de INSTITUTO DE INVESTIGACIONES BIOLOGICAS Y TECNOLOGICAS
Articulos de INSTITUTO DE INVESTIGACIONES BIOLOGICAS Y TECNOLOGICAS
Citación
Kembro, Jackelyn Melissa; Satterlee, Daniel G.; Schmidt, J. B.; Perillo, Maria Angelica; Marin, Raul Hector; Open-field temporal pattern of ambulation in Japanese quail genetically selected for contrasting adrenocortical responsiveness to brief manual restraint; Poultry Science Association; Poultry Science; 87; 11; 11-2008; 2186-2195
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