caa a22 4500 46582661X CHVBK 20180323112151.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF01075673 doi (NATIONALLICENCE)springer-10.1007/BF01075673 The effects of water deprivation and salt load on water conservation efficiency in two Indian desert gerbils [Elektronische Daten] [T. Sasidharan, S. Goyal, Phool Chand, P. Ghosh] Summary: The effects of water deprivation and intraperitoneal salt loading on urine volume and on various urinary constituents have been examined in two gerbil species of the Rajasthan desert, the Indian desert gerbil (Meriones hurrianae Jerdon) and the Indian gerbil (Tatera indica indica Hardwicke). During summer, hydratedT. indica excreted 0.782 ml urine·100 g-1·d-1 which was about 60.5% higher than the volume of urine excreted by hydratedM. hurrianae (0.487 ml·100 g-1·d-1). During winter, both species excreted around 1.5 ml urine ·100 g-1·d-1. The experimental treatments caused reductions in urine volume inM. hurrianae from 40 to 76% during summer and from 35 to 71% in winter. Similar treatments inT. indica caused reductions in urine volume of 50-82% in summer and 5-60% in winter. The mean increase in urine osmolarity following various salt loading treatments inT. indica ranged from 3800 to 5761 mosmol·l-1 and from 4034 to 6255 mosmol·l-1 during summer and winter, respectively. The mean values of urine osmolarity for hydratedT. indica were 2831 and 3189 mosmol·l-1 during summer and winter, respectively. InM. hurrianae salt loading treatments caused increases of urine osmolarity between 3381 and 5646 mosmol·l-1 and between 4032 and 5434 mosmol· l-1, during summer and winter, respectively, over the values recorded for hydrated animals (summer=3292; winter=3294 mosmol·l-1). A maximum urine osmolarity of around 7000 mosmol·l-1 was found in both species when subjected to 2% salt-loading treatment. The treatments used in this study increased urinary urea level in bothT. indica (3039-4056 mM) and inM. hurrianae (1900-2180 mM) compared to the level in their respective hydrated controls (T. indica=1628 mM;M. hurrianae=1372 mM). The results indicate thatT. indica may be better adapted to produce more concentrated urine thanM. hurrianae. Springer-Verlag, 1990 Desert gerbils nationallicence Water conservation nationallicence Water deprivation nationallicence Salt load nationallicence Kidney function nationallicence Sasidharan T. Division of Animal Studies, Central Arid Zone Research Institute, 342 003, Jodhpur, India aut Goyal S. Division of Animal Studies, Central Arid Zone Research Institute, 342 003, Jodhpur, India aut Chand Phool Division of Animal Studies, Central Arid Zone Research Institute, 342 003, Jodhpur, India aut Ghosh P. Division of Animal Studies, Central Arid Zone Research Institute, 342 003, Jodhpur, India aut Journal of Comparative Physiology B Springer-Verlag 160/4(1990-07-01), 413-422 0174-1578 160:4<413 1990 160 360 https://doi.org/10.1007/BF01075673 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01075673 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sasidharan T. Division of Animal Studies, Central Arid Zone Research Institute, 342 003, Jodhpur, India aut NATIONALLICENCE 700 1- Goyal S. Division of Animal Studies, Central Arid Zone Research Institute, 342 003, Jodhpur, India aut NATIONALLICENCE 700 1- Chand Phool Division of Animal Studies, Central Arid Zone Research Institute, 342 003, Jodhpur, India aut NATIONALLICENCE 700 1- Ghosh P. Division of Animal Studies, Central Arid Zone Research Institute, 342 003, Jodhpur, India aut NATIONALLICENCE 773 0- Journal of Comparative Physiology B Springer-Verlag 160/4(1990-07-01), 413-422 0174-1578 160:4<413 1990 160 360 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer