TY - JOUR
AU - Grewal, Manjit Singh
AB - THE SELECTIVE ADVANTAGE OF TEMPERATURE TOLERANCE AMONG THE PROGENY OF FROGS WITH VERTEBRAL FUSIONSl SANJOY DASGUPTA AND MANJIT SlNGH GREWAL Department of Anatomy, Unit-I, All-India Institute of Medical Sciences, New Delhi Received January 11, 1967 United States. He showed that eggs of Vertebral fusions, a skeletal variant, are found in 8 to 12% of frogs among the frogs inhabiting colder regions can with­ natural populations of Rana cyanophlyctis stand colder temperatures than those of collected around Delhi. Frogs possessing warmer regions. Studies of Moore (1939, vertebral fusions are normal in their exter­ 1949) ; Volpe (1953); Hubbs et al. (1963) nal appearances. The fusion generally in­ and Ballinger and Mckinney (1966) fur­ volves two or more vertebrae which are ther demonstrate that embryonic tempera­ fused together along their articular sur­ ture tolerance in anuran species can be used to explain geographical distribution of faces. Such vertebral fusions may occur species and that breeding activity is corre­ with or without structural alterations of lated with temperature. the vertebrae involved, and has been de­ In our present study we have defined scribed in detail by Grewal and Dasgupta the temperature tolerance limits of embry­ (1967). Subsequent studies by the present onic 
TI - THE SELECTIVE ADVANTAGE OF TEMPERATURE TOLERANCE AMONG THE PROGENY OF FROGS WITH VERTEBRAL FUSIONS
JO - Evolution
DO - 10.1111/j.1558-5646.1968.tb03452.x
DA - 1968-03-01
UR - https://www.deepdyve.com/lp/oxford-university-press/the-selective-advantage-of-temperature-tolerance-among-the-progeny-of-r04b5pJa05
SP - 87
EP - 92
VL - 22
IS - 1
DP - DeepDyve
ER -