Abstract
One of the main selection pressures to which animals are exposed in nature is predation, which affects a wide variety of biological traits. When the mother experiences this stressor during pregnancy and/or lactation, behavioral and physiological responses may be triggered in the offspring as well. Thus, in order to broaden and deepen knowledge on the transgenerational effects of predation stress, we evaluated how maternal stress experienced during pregnancy and/or lactation affects the spatial abilities of progeny at the onset of adulthood in the subterranean rodent Ctenomys talarum. The results showed that, contrary to what was observed in other rodent species, maternal exposure to predator cues during pregnancy and lactation did not negatively affect the spatial abilities of the offspring, even registering some minor positive effects. Concomitantly, no effects of predatory cues on physiological parameters associated with stress were observed in the progeny. This difference in results between the present study and previous works on maternal stress highlights the importance of considering the species to be evaluated (strain, age and origin—wild or captive—) and the type of stressor used (artificial or natural, intensity of exposure) in the evaluation of the possible transgenerational effects of maternal stress.
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Research data are not shared. The data that support the findings of this study are available from the corresponding author upon reasonable request.
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JI, and CS conceived and designed the analysis; collected the data; contributed data or analysis tools, wrote the paper. VB and RZ conceived and designed the analysis; collected the data; contributed data or analysis tools. MK performed the analysis.
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Iribarne, J., Brachetta, V., Kittlein, M. et al. Effects of acute maternal stress induced by predator cues on spatial learning and memory of offspring in the subterranean rodent Ctenomys talarum. Anim Cogn 26, 1997–2008 (2023). https://doi.org/10.1007/s10071-023-01822-w
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DOI: https://doi.org/10.1007/s10071-023-01822-w