Repeated predator odor exposure alters maternal behavior of postpartum Brandt’s voles and offspring’s locomotor activity

Wu, Ruiyong; Huang, Yefeng; Liu, Yuan; Shen, Qiu-Yi; Han, Yuxuan; Yang, Shengmei; Wei, Wanhong

doi:10.1016/j.beproc.2020.104143

Cited by 6 publications

(2 citation statements)

References 56 publications

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“…Also, rats with pups exposed to predator odour on the day of parturition [31,32] or 30 days after [33] showed increased maternal behaviour (nursing and grooming) over the next days. Those effects were not produced in voles when the females were exposed to predator odour without the pups [34].…”

Section: Evidence From Animal Modelsmentioning

confidence: 94%

The convergence between defence and care in mammals

Vieira,

Olsson

2023

Preprint

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The motivations to protect oneself and others have often been seen as conflicting. Here, we discuss recent evidence that self-defensive mechanisms may in fact be recruited to enable helping of others. In some instances, the defensive response to a threat may even be more decisive in promoting helping than the response to a conspecific’s distress (as predicted by empathy-altruism models). In light of this evidence, we propose that neural mechanisms implicated in self-defence may have been repurposed through evolution to enable protection of others, and thus defence and care may be convergent rather than conflicting functions. Finally, we present and discuss a neural working model of the shared brain mechanisms implicated in defence of both self and others.

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Section: Evidence From Animal Modelsmentioning

confidence: 94%

The convergence between defence and care in mammals

Vieira,

Olsson

2023

Preprint

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“…Repeated exposure to cat urine in-duces behavioral and physiological habituation in adolescent and adult voles [61,62]. CO exposure during adolescence, pregnancy, and the postpartum period has crossgenerational effects [63][64][65][66][67]. Recent evidence indicates that adolescent CO exposure influences adolescent social contact and adult parental behavior of Brandt's voles [38].…”

Section: Introductionmentioning

confidence: 99%

Adolescence Predatory Risk Alters Social Behaviors and Cognitive Ability and Central Oxytocin and Vasopressin Expression in Adult Brandt’s Voles

Pang

et al. 2022

Neuroendocrinology

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Introduction: Stress during adolescence causes long-term behavioral changes in adulthood. We previously found that adolescent exposure to predatory risk augments adolescent social contact and adult parental behavior in Brandt’s voles (Lasiopodomys brandtii). Methods: Here we determined whether this experience alters sexual behavior, pair-bond formation, and recognition ability, as well as basal HPA axis activity, central oxytocin (OT), and arginine-vasopressin (AVP) expression in adulthood. Results: In the social interaction test, repeated cat odor (CO) exposure enhanced the frequency of lordosis by female voles toward an unfamiliar opposite-sex conspecific. CO voles preferred to engage with their partners after 48 h cohabitation whereas the control groups did not, which may reflect stable pair bonds in the CO treatment group. Furthermore, adolescent exposure to CO inhibited novel object and place recognition ability, while it influenced social recognition only among adult males. No effect of adolescent CO exposure was observed for basal HPA axis activity, showing a habituation effect. Finally, we found that CO exposure increased OT and decreased AVP expression in the hypothalamus, including the paraventricular nucleus and anterior hypothalamus. The levels of OT in the medial amygdala were lower, and AVP in the lateral septum was higher in CO voles compared with the control. Discussion/Conclusion: These findings demonstrate that adolescent exposure to predator risk promotes adult reproductive behavior of Brandt’s voles. Deficits in recognition ability may necessitate alterations in reproductive strategies to enhance inclusive fitness. OT and AVP systems may play a modulatory role in the alteration of social behaviors elicited by adolescent predatory risk.

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