Effects of sex and age on parental motivation in adult virgin California mice

Nguyen, Cathy; Zhao, Meng; Saltzman, Wendy

doi:10.1016/j.beproc.2020.104185

Cited by 4 publications

(5 citation statements)

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“…Part of the behavioral differences between groups may result from variation in stress tolerance among sexes, species, and reproductive states. For instance, in California mouse fathers, replacing a cage’s lid can inhibit paternal behaviors, even after 10 minutes of habituation [ 55 , but see 56 where virgins do not show that response after 15 minutes of habituation]. We expect, however, that our 60 minutes of habituation were enough to mitigate the effects of stress.…”

Section: Discussionmentioning

confidence: 97%

Post-mating parental behavior trajectories differ across four species of deer mice

Khadraoui

Merritt²,

Hoekstra³

et al. 2022

PLoS ONE

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Among species, parental behaviors vary in their magnitude, onset relative to reproduction, and sexual dimorphism. In deer mice (genus Peromyscus), while most species are promiscuous with low paternal care, monogamy and biparental care have evolved at least twice under different ecological conditions. Here, in a common laboratory setting, we monitored parental behaviors of males and females of two promiscuous (eastern deer mouse P. maniculatus and white-footed mouse P. leucopus) and two monogamous (oldfield mouse P. polionotus and California mouse P. californicus) species from before mating to after giving birth. In the promiscuous species, females showed parental behaviors largely after parturition, while males showed little parental care. In contrast, both sexes of monogamous species performed parental behaviors. However, while oldfield mice began to display parental behaviors before mating, California mice showed robust parental care behaviors only postpartum. These different parental-care trajectories in the two monogamous species align with their socioecology. Oldfield mice have overlapping home ranges with relatives, so infants they encounter, even if not their own, are likely to be closely related. By contrast, California mice disperse longer distances into exclusive territories with possibly unrelated neighbors, decreasing the inclusive fitness benefits of caring for unfamiliar pups before parenthood. Together, we find that patterns of parental behaviors in Peromyscus are consistent with predictions from inclusive fitness theory.

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Section: Discussionmentioning

confidence: 97%

Post-mating parental behavior trajectories differ across four species of deer mice

Khadraoui

Merritt²,

Hoekstra³

et al. 2022

PLoS ONE

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“…Fathers in biparental species, such as the California mouse, are strongly attracted to their offspring and actively engage in parental behavior, even toward unrelated infants (Elwood and Stolzenberg, 2020). Reproductively naive male California mice, on the other hand, show highly variable responses to experimentally presented pups, which can include nurturing, avoiding, or attacking the pups (Gubernick et al, 1994;De Jong et al, 2009;Horrell et al, 2017;Nguyen et al, 2020). The sources of this variation are not well understood.…”

Section: A B Performing Parental Behavior and B) In Proximity To The Pupmentioning

confidence: 99%

“…Polycarbonate Effects of Acute Stress on Parental Behavior in Reproductively Naïve Male cages (44 x 24 x 20 cm) were used to house the mice. The animals were kept under standard laboratory conditions (Nguyen et al, 2020), with aspen shavings for bedding and cotton for nesting, and had ad libitum access to food (Purina 5001 Rodent Chow) and water. Animals were removed from their parents' cages at weaning age (27-31 days), before the birth of their younger siblings, and housed in groups of 3-4 same-sex, age-matched mice.…”

mentioning

confidence: 99%

Effects of Acute Stress on Parental Behavior in Reproductively Naïve Male California Mice

Shaikh,

Asif,

Saltzman

2023

UC Riverside Undergraduate Research Journal Submit

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She returned to Southern California neural and physiological consequences of parenthood and neuroendocrineIn many biparental mammalian species, such as California mice (Peromyscus calireproductively naïve males show highly variable behavioral responses to infants. The sources of this variation are unknown. We investigated the effects of acute stress on pup-directed behavior in reproductively naïve male California mice. Each mouse underwent three 10-minute tests with an unfamiliar pup at 48-hour intervals. Males in the stressed group (N=22) were stressed using subcutaneous oil injections, a common experimental stressor used in rodents, immediateto avoid any experimentally induced stress. Compared to controls, stressed suggest that acute stress experienced by reproductively naïve males might contribute to both short-term and long-term differences in pup-directed behavior.ior; subcutaneous injections; behavioral tests; experimental pups.

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“…Subjects were descended from California mice purchased from the Peromyscus Genetic Stock Center (University of South Carolina, Columbia, SC, USA) and were bred at the University of California, Riverside (UCR). Mice were housed in polycarbonate cages (44 × 24 × 20 cm) under standard laboratory conditions (Nguyen et al, 2020). At weaning age (27-31 days), before the birth of younger siblings, animals were removed from their parents' cages and housed in groups of 3-4 same-sex, age-matched mice until used in the study.…”

Section: Animalsmentioning

confidence: 99%

“…Parents are also strongly attracted to and nurturant toward unrelated pups (de Jong et al, 2009;Perea-Rodriguez et al, 2015;Horrell et al, 2017;Perea-Rodriguez et al, 2018). In contrast, virgin adult males and females often avoid or attack experimentally presented pups (Gubernick et al, 1994;de Jong et al, 2009;Horrell et al, 2017;Nguyen et al, 2020).…”

Section: Introductionmentioning

confidence: 99%