Time management in a co-housed social rodent species (Arvicanthis niloticus).
Time management in a co-housed social rodent species (Arvicanthis niloticus).
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共同建立的社会啮齿动物物种（Arvicanthis niloticus）中的时间管理。
DOI：
10.1038/s41598-018-19365-3
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发表时间：
2018-01-19
影响因子：
4.6
通讯作者：
Schwartz WJ
中科院分区：
文献类型：
--
作者：
Castillo-Ruiz A;Indic P;Schwartz WJ
社会性对健康有有益的影响，动物活动的时间可能是至关重要的。社会线索可以通过直接影响生物钟或绕过生物钟的过程（掩蔽）来影响日常节律活动，但这些可能性仍然没有完全解决。我们调查的影响，社会线索的昼夜体温（Tb）的昼夜节律对共同圈养和隔离的草大鼠，Arvicanthis niloticus（社会物种），在恒定的黑暗（DD）。同居并没有诱导同步的昼夜节律Tb。然而，社会性的历史影响昼夜节律的属性：加速时钟在性经验丰富的男性和女性在DD和推进节奏阶段的女性在一个光明的黑暗周期。为了解决是否同步发生在ultradian规模，我们分析了结核病和活动节奏对共同居住的姐妹篇或夫妇在DD。无论对类型，共同住房增加了一倍的时间百分比的个人同时活跃，而不增加个人的活动水平，这表明活动回合同步超过24小时的重新分配。总之，我们的实验室研究结果表明，社会线索影响个人的“时间分配”预算通过机制在多个层次的生物组织。我们推测，在自然环境中，这些影响可能是适应性的，特别是对群居动物。
Sociality has beneficial effects on fitness, and timing the activities of animals may be critical. Social cues could influence daily rhythmic activities via direct effects on the circadian clock or on processes that bypass it (masking), but these possibilities remain incompletely addressed. We investigated the effects of social cues on the circadian body temperature (Tb) rhythms in pairs of co-housed and isolated grass rats, Arvicanthis niloticus (a social species), in constant darkness (DD). Cohabitation did not induce synchronization of circadian Tb rhythms. However, socio-sexual history did affect circadian properties: accelerating the clock in sexually experienced males and females in DD and advancing rhythm phase in the females in a light-dark cycle. To address whether synchronization occurs at an ultradian scale, we analyzed Tb and activity rhythms in pairs of co-housed sisters or couples in DD. Regardless of pair type, co-housing doubled the percentage of time individuals were simultaneously active without increasing individual activity levels, suggesting that activity bouts were synchronized by redistribution over 24 h. Together, our laboratory findings show that social cues affect individual “time allocation” budgets via mechanisms at multiple levels of biological organization. We speculate that in natural settings these effects could be adaptive, especially for group-living animals.
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