-10- 



Stewart, M.M. and P. Sandison. 1972. Comparative food habits of sympatric mink 

 frogs, bullfrogs, and green frogs. J. Herp. 6:241-244. 



Strecker, J.K. 1927. Observations on the food habits of Texas amphibians and 

 reptiles. Copeia 1927:6-9. 



Surface, H.A. 1913. First report on the economic features of the amphibians 



of Pennsylvania. Penna. Dept. Agric, Zool. Bull. Div, Zool. 3 (3/4) :65-152. 



Whitaker, J.O. 1961. Habitat and food of mouse-trapped young Rana pipiens and 

 Ran a clamitans. Herpetologica 17:173-179. 



Williams, R.C. and R. Boice. 1972. Competitive feeding behavior of Rana pipiens 

 and Rana clamitans . Trans. Mo. Acad. Sci. 4:156 (Abstract). 



See also XIV. Larval Ecology. 



X. Ecology 



Berven, K.A. 1977. Variation in the developmental ecology of the green frog, 

 Rana clamitans , across an altitudinal gradient. M.S. thesis. Univ. 

 Maryland. 



Berven, K.A. The genetic basis of altitudinal variation in the wood frog, 

 Rana sylvatica . I. An experimental analysis of life history traits. 

 Evolution. In press. 



Berven, K.A. , D.E. Gill, and S.J. Smith-Gill. 1979 (see II. Evolution/Taxonomy). 



Bowers, J.H. 1966. Food habits of the diamond-backed water snake, Natrix 

 rhombifera rhombifera , in Bowie and Red River Counties, Texas. 

 Herpetologica 22:225-229. 



Bury, R.B. , C.K. Dodd, Jr. and G.M. Fellers. 1980. Conservation of the 



Amphibia of the United States: a Review. U.S. Fish Wildl. Serv. Resour. 

 Publ. 134, 34 p. 



Chaney, A.H. 1951. The food habits of the salamander Amphiuma tridactylum . 

 Copeia 151(1) :45-49. 



Cole, J. and S.G. Fisher. 1979. Annual metabolism of a temporary pond system. 

 Amer. Midi. Natur. 100:15-22. 



Conant, R. 1938. The reptiles of Ohio. Amer. Midi. Natur. 20:1-200. 



Cypert, E. 1961. The effects of fires in the Okefenokee Swamp in 1954 and 1955. 

 Amer. Midi. Natur. 66:485-503. 



Edgren, R.A. 1955. The natural history of the hog-nosed snakes. Genus Heterodon : 

 a review. Herpetologica 11:105-117. 



Fleming, P.L. 1976. A study of the distribution and ecology of Rana clamitans 

 Latrielle. Ph.D. diss. Univ. Minn. 170 p. Diss. Abstr. Int. B. Sci. Eng. 

 38(3) :1082. 1977. 



