SCHLEICH Cristian Eric
Prenatal predatory stress in a wild species of subterranean rodent: do ecological stressors always have a negative effect on the offspring?
BRACHETTA, V.; SCHLEICH, C.E.; CUTRERA, A.P.; MERLO, J.; KITTLEIN, M; ZENUTO, R.R.
JOHN WILEY & SONS INC
Lugar: New York; Año: 2018
In pregnant females, a failed predatory event induces individual responses but also represents a significant change in the developmental environment of the offspring, which may lead to modifications in their phenotype that may persist at different stages of life. We evaluate whether prenatal exposure to predatory cues affects anxiety behavior, behavioral response to predator cues, stress response to immobilization and immune response to SRBC and PHA in juveniles of the subterranean rodent Ctenomys talarum. We found that prenatal predator stress (PPS) i) increased juvenile anxiety-like behaviors and the appearance of anti-predator behaviors, ii) did not affect the response of offspring to predatory stressors, iii) did not influence the physiological response of juveniles to stressors (immobilization) nor the immunological responses to SRBC and PHA challenges. The present work shows the influence of PPS on the development of behavioral responses in the offspring, whom displayed a state of anxiety and behavioral changes associated with decreased locomotor activity and avoidance behaviors. Thus, these individuals prenatally exposed to predatory cues show behavioral adaptations that may contribute to avoid predators in the adult life.