4 research outputs found

    Aggressive dominance can decrease behavioral complexity on subordinates through synchronization of locomotor activities

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    Social environments are known to influence behavior. Moreover, within small social groups, dominant/subordinate relationships frequently emerge. Dominants can display aggressive behaviors towards subordinates and sustain priority access to resources. Herein, Japanese quail (Coturnix japonica) were used, given that they establish hierarchies through frequent aggressive interactions. We apply a combination of different mathematical tools to provide a precise quantification of the effect of social environments and the consequence of dominance at an individual level on the temporal dynamics of behavior. Main results show that subordinates performed locomotion dynamics with stronger long-range positive correlations in comparison to birds that receive few or no aggressions from conspecifics (more random dynamics). Dominant birds and their subordinates also showed a high level of synchronization in the locomotor pattern, likely emerging from the lack of environmental opportunities to engage in independent behavior. Findings suggest that dominance can potentially modulate behavioral dynamics through synchronization of locomotor activities.publishedVersionAlcala, Rocio. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas, F铆sicas y Naturales; Argentina.Caliva, Jorge Mart铆n. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas, F铆sicas y Naturales; Argentina.Caliva, Jorge Martin. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Instituto de Investigaciones Biol贸gicas y Tecnol贸gicas; Argentina.Flesia, Ana Georgina. Facultad de Matem谩tica, Astronom铆a, F铆sica y Computaci贸n; Argentina.Flesia, Ana Georgina. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro de Investigaci贸n y Estudios de Matem谩tica; Argentina.Marin, Ra煤l Hector. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas, F铆sicas y Naturales; Argentina.Marin, Ra煤l Hector. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Instituto de Investigaciones Biol贸gicas y Tecnol贸gicas; Argentina.Kembro, Jackelyn Melissa. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas, F铆sicas y Naturales; Argentina.Kembro, Jackelyn Melissa. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Instituto de Investigaciones Biol贸gicas y Tecnol贸gicas; Argentina

    The fractal organization of ultradian rhythms in avian behavior

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    Living systems exhibit non-randomly organized biochemical, physiological, and behavioral processes that follow distinctive patterns. In particular, animal behavior displays both fractal dynamics and periodic rhythms yet the relationship between these two dynamic regimens remain unexplored. Herein we studied locomotor time series of visually isolated Japanese quails sampled every 0.5 s during 6.5 days (>106 data points). These high-resolution, week-long, time series enabled simultaneous evaluation of ultradian rhythms as well as fractal organization according to six different analytical methods that included Power Spectrum, Enright, Empirical Mode Decomposition, Wavelet, and Detrended Fluctuation analyses. Time series analyses showed that all birds exhibit circadian rhythms. Although interindividual differences were detected, animals presented ultradian behavioral rhythms of 12, 8, 6, 4.8, 4 h and/or lower and, irrespective of visual isolation, synchronization between these ultradian rhythms was observed. Moreover, all birds presented similar overall fractal dynamics (for scales 芒30 s to >4.4 h). This is the first demonstration that avian behavior presents fractal organization that predominates at shorter time scales and coexists with synchronized ultradian rhythms. This chronobiological pattern is advantageous for keeping the organism's endogenous rhythms in phase with internal and environmental periodicities, notably the feeding, light-dark and sleep-wake cycles.Fil: Guzm谩n, Diego Alberto. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Investigaciones Biol贸gicas y Tecnol贸gicas. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas, F铆sicas y Naturales. Instituto de Investigaciones Biol贸gicas y Tecnol贸gicas; Argentina. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas F铆sicas y Naturales. Instituto de Ciencias y Tecnolog铆a de los Alimentos; Argentina. University Aarhus; DinamarcaFil: Flesia, Ana Georgina. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Centro de Investigaci贸n y Estudios de Matem谩tica. Universidad Nacional de C贸rdoba. Centro de Investigaci贸n y Estudios de Matem谩tica; ArgentinaFil: Aon, Miguel A.. University Johns Hopkins; Estados UnidosFil: Pellegrini, Stefan铆a. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Investigaciones Biol贸gicas y Tecnol贸gicas. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas, F铆sicas y Naturales. Instituto de Investigaciones Biol贸gicas y Tecnol贸gicas; Argentina. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas F铆sicas y Naturales. Instituto de Ciencias y Tecnolog铆a de los Alimentos; ArgentinaFil: Marin, Raul Hector. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Investigaciones Biol贸gicas y Tecnol贸gicas. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas, F铆sicas y Naturales. Instituto de Investigaciones Biol贸gicas y Tecnol贸gicas; Argentina. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas F铆sicas y Naturales. Instituto de Ciencias y Tecnolog铆a de los Alimentos; ArgentinaFil: Kembro, Jackelyn Melissa. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Centro Cient铆fico Tecnol贸gico Conicet - C贸rdoba. Instituto de Investigaciones Biol贸gicas y Tecnol贸gicas. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas, F铆sicas y Naturales. Instituto de Investigaciones Biol贸gicas y Tecnol贸gicas; Argentina. Universidad Nacional de C贸rdoba. Facultad de Ciencias Exactas F铆sicas y Naturales. Instituto de Ciencias y Tecnolog铆a de los Alimentos; Argentin
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