The ecology and life history The ecology and life history of the common frog (Rana temporaria temporaria) ecologylifehisto00sava Year: 1962 THE EGGS AND YOUNG TADPOLES 23 oxygcn-deficient and liighly polluted environment is produced. They even come within some distance of having the gill modifications of the more extraordinary animal, for they momentarily spread their gills in the surface film. The change in habit needed to convert one type of life liistory into the other seems to consist mainly in the building of the waW, for the anatomical, physiological and psychological modifications nece
The ecology and life history The ecology and life history of the common frog (Rana temporaria temporaria) ecologylifehisto00sava Year: 1962 THE EGGS AND YOUNG TADPOLES 23 oxygcn-deficient and liighly polluted environment is produced. They even come within some distance of having the gill modifications of the more extraordinary animal, for they momentarily spread their gills in the surface film. The change in habit needed to convert one type of life liistory into the other seems to consist mainly in the building of the waW, for the anatomical, physiological and psychological modifications necessary for survival in a polluted environment are already j^resent. When the mouth opens, the tadpoles enter another phase of their lives, and this forms the subject of the next chapter. REFERENCES Balcells, E. (1956) P. Inst. Biol ApL, 24, 81-121. Bles, (1906) Trans, roy. soc. Edin., 41, 789-821. Cambar, R. (1953) C. R. Acad. Sci. Paris, 237, DiCKERSON, M. (1906) The Frog Book (New York). Douglas, R. (1948) J. Anim. EcoL, 17, No. 2, 189-92 FiscHER-SiGWART, H. (1897) Vjschr. naturf. Ges. Zurich, 238-316. Gayda (1921) Arch. FisioL, III, 211. Helff, O. M. and Stubblefield, (1931) Physiol. ZooL, 4, 271-86. Krizenecky, J. and Podhradsky, J. (1924) Pfliig. Arch. ges. Physiol, 204,471-6. Krogh, a. (193 i) Biol. Rev., 6, 412-42. Macfarlane, R. G. and Barnett, B. (1934) Lancet, 2, 985. Moore, J. A. (1939) Ecology, 20, 4, 459-78. Moore, J. A. (1940) Amer. Nat., 74, 89-93. Moore, J. A. (1951) Proc. Nat. Acad. Sci., 37, 862-6. Noble, G. K. (1926) Amer. Mus. Novit., No. 229, 1-7. Noble, G. K. (1927) Ann. NY. Acad. Sci., 30, 31-128. NussBAUM, M. (1897) Arch. mikr. Anat., 46, 479-500, 48, 545-50' RuGH, R. (1935)7. Exp. Zool., 71, 149-63. Savage, R. M. (1935) Proc. zool. Soc. Lond., 3, 605-10. Savage, R. M. (1937) Proc. zool. Soc. Lond., A, 3, 249-60. Savage, R. M. (1938) Proc. zool. Soc. Lond., A, 108, 465-80. Savage, R. M. (1950) Brit. J. Herpet., i, No. 3, 57-66. Seurat (19
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