10.5061/DRYAD.CN8MK
Cavieres, Grisel
Pontifical Catholic University of Chile
Nuñez-Villegas, Monica
University of Chile
Bozinovic, Francisco
Pontifical Catholic University of Chile
Sabat, Pablo
University of Chile
Data from: Early life experience drives short-term acclimation of
metabolic and osmoregulatory traits in the leaf-eared mouse
Dryad
dataset
2017
Phyllotis darwini
osmoregulation
short-term acclimation
early life experience
water availability
2017-05-05T13:16:37Z
2017-05-05T13:16:37Z
en
https://doi.org/10.1242/jeb.149997
122646 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
We studied the putative effect of early experience on the physiological
flexibility of metabolic and osmoregulatory traits in the leaf-eared mouse
Phyllotis darwini, an altricial rodent inhabiting seasonal mediterranean
environments. Adult individuals were collected in central Chile and
maintained in breeding pairs. Pups were isolated after weaning and
acclimated to different temperature (cold or warm) and water availability
(unrestricted and restricted) until adulthood. Subsequently, individuals
were re-acclimated to the opposite treatment. Rodents reared in warm and
subjected to water restriction had lower basal metabolic rate (BMR), lower
total evaporative water loss (TEWL), and body mass (Mb) compared to those
developing in the cold treatment; nevertheless, individuals subjected to
warm temperatures had greater relative medullary thickness (RMT) and urine
concentrating ability (UCA). Cold-reared rodents re-acclimated to warm
conditions exhibited physiological flexibility of metabolic traits;
however, their osmoregulatory attributes did not vary. Conversely,
warm-reared rodents re-acclimated to cold had reduced RMT and UCA, but the
metabolic traits of these individuals did not change; these results
suggest a trade-off between metabolic performance and renal capabilities
that might hinder physiological acclimation. Our results support the
hypothesis of ontogenetic dependence of short-term acclimation in
osmoregulatory and metabolic traits in Phyllotis darwini.
Cavieres et al JEB 2017