Osmoregulatory traits of broad-toothed field mouse (Apodemus mystacinus) populations from different habitats

摘要: Abstract One mechanism for physiological adjustment of small mammals to different habitats and seasons is by seasonal acclimatization their osmoregulatory system. We examined the abilities broad-toothed field mice ( Apodemus mystacinus ) from ecosystems (‘sub-alpine’ ‘Mediterranean’) cope with salinity stress under short day (SD) long (LD) photoperiod regimes. compared urine volume, osmolarity, urea electrolyte (sodium, potassium chloride) concentrations. Significant differences were noted in two deal load; particular sub-alpine produced less concentrated than Mediterranean SD− seeming produce particularly dilute urine. Urea concentration generally decreased increasing salinity, whereas sodium levels increased, however behaved differently appeared not be able excrete electrolytes as effectively other groups mice. Differences observed provide an insight into kinds variability that are present within populations inhabiting ecosystems, thus how may respond potential changes environment. Physiological data pertaining adaptation increased xeric conditions, modelled A. , provides valuable information species climatic challenges.