Transmission of paternal retrieval behavior from fathers to sons in a biparental rodent
Transmission of paternal retrieval behavior from fathers to sons in a biparental rodent
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DOI：
10.1002/dev.22164
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发表时间：
2021-09-01
影响因子：
2.2
通讯作者：
Marler, Catherine A.
中科院分区：
文献类型：
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作者：
Becker, Elizabeth A.;Leithead, Amanda B.;Marler, Catherine A.
母性行为的代际传递是存在的，但对父系行为的了解较少。在像加州小鼠（Peromyscus californicus）这样的双亲物种中，父亲的照顾有助于后代的幸福，并对大脑和行为产生持久的影响。父亲的蜷缩/梳理行为可以传递给后代，但父亲的检索，使年轻人免受潜在的伤害，是否独立传播尚不清楚。我们通过幼犬置换操作来操纵父系检索经验，然后研究在发育过程中暴露于较高水平父系检索的雄性是否改变了其与后代的成年检索行为。男性暴露于提高父系检索，减少检索相比，检索他们的后代更频繁，但蜷缩/梳理后代不受干扰的自然观察。幼鼠移位攻毒后未观察到差异。高父亲检索组也表现出更多的体力活动和刻板印象。我们的研究结果是一致的假设，父检索水平跨代传递，并可能通过机制分开的蜷缩/梳理。其中一个修正因素可能是焦虑，因为高检索组的活动和刻板行为增加。我们推测父亲检索的传输可能会通知一个保护性的养育方式。
Transmission of maternal behavior across generations occurs, but less is known about paternal behavior. In biparental species like the California mouse (Peromyscus californicus), paternal care contributes to the well-being of offspring with lasting consequences on the brain and behavior. Paternal huddling/grooming behavior can be passed on to future generations, but whether paternal retrieval, which removes young from potential harm, is transmitted independently is unclear. We manipulated paternal retrieval experience through pup displacement manipulations, then examined whether males exposed to higher levels of paternal retrieval in development altered their adult retrieval behavior with their offspring. Males exposed to heightened paternal retrievals, as compared to reduced retrievals, retrieved their offspring more often but huddled/groomed offspring less during undisturbed natural observations. No differences were observed following a pup displacement challenge. The high paternal retrieval group also exhibited more physical activity and stereotypy. Our results are consistent with the hypothesis that paternal retrieval levels are transmitted across generations and may function via mechanisms separate from huddling/grooming. One modifying factor may be anxiety because increased activity and stereotypy occurred in the high retrieval group. We speculate how the transmission of paternal retrievals may inform a protective parenting style.