Can the frequency of defensive posture adoption influence the expression of active behavior of adult rats?

Autor: Martins GW; Department of Physical Education and Sports Science, CAV, Federal University of Pernambuco, 55608-680, Recife, PE, Brazil; Laboratory of Nutrition, Physical Activity and Neuroplasticity - Academic Center of Vitória - Federal University of Pernambuco, Vitória De Santo Antão, 55608-680, PE, Brazil. Electronic address: gerffesonwillian@gmail.com., Chagas GS; Department of Physical Education and Sports Science, CAV, Federal University of Pernambuco, 55608-680, Recife, PE, Brazil., Patrício FC; Department of Physical Education and Sports Science, CAV, Federal University of Pernambuco, 55608-680, Recife, PE, Brazil., Lira AO; Department of Nutrition, Federal University of Pernambuco, 50670-901, Recife, PE, Brazil., Fragoso J; Department of Nutrition, Federal University of Pernambuco, 50670-901, Recife, PE, Brazil., Santos AB; Department of Physical Education and Sports Science, CAV, Federal University of Pernambuco, 55608-680, Recife, PE, Brazil., Leandro CG; Department of Physical Education and Sports Science, CAV, Federal University of Pernambuco, 55608-680, Recife, PE, Brazil; Laboratory of Nutrition, Physical Activity and Neuroplasticity - Academic Center of Vitória - Federal University of Pernambuco, Vitória De Santo Antão, 55608-680, PE, Brazil. Electronic address: carol.leandro@ufpe.br.
Jazyk: angličtina
Zdroj: Behavioural processes [Behav Processes] 2020 Aug; Vol. 177, pp. 104151. Date of Electronic Publication: 2020 May 28.
DOI: 10.1016/j.beproc.2020.104151
Abstrakt: During the youth, rats spend a long time in play fighting (PF), and asymmetries are observed in terms of the frequency of adoption of the supine posture. This study investigated the effects of asymmetry in adopting supine posture during PF on the time spent in locomotor activity-related contextual behaviors during youth and adulthood. Male Wistar rats were divided into three groups according to the number of times of their adoption of a defensive supine (S) posture: low (LS, n = 10), intermediary (IS, n = 10) and high (HS, n = 10). Rats aged 21-62 days were placed in voluntary physical active cages (VPAC) with running wheels. The time spent in social play (SP), play fighting (PF), voluntary physical activity (VPA), spontaneous physical activity (SPA) and resting (Rest) were recorded daily. During adulthood (63-92 days of age), rats were placed individually in the VPAC, with daily quantification of VPA. The average time spent in PF was not different among the groups, but was age-dependent. LS and IS rats spent more time in VPA than the HS rats, between days 49-62 (intragroup analyses) and 72-78 (individual analyses) days of age. However, LS and IS animals spent less time in SPA than HS rats from 42-48 days of age. In conclusion, the expressions of VPA and SPA are influenced by the asymmetries in adoption of the supine posture of members within a social group, remaining even after the separation of the social groups.
Competing Interests: Declaration of Competing Interest The authors declare that there is no conflict of interest.
(Copyright © 2020 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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