. The ecology and life history of the common frog (Rana temporaria temporaria). Rana temporaria. lyO ECOLOGY AND LIFE HISTORY OF THE COMMON FROG eggs there, even though this spot was a very small fraction of the available space. This behaviour is often found in the ponds. The recoil of the issuing eggs caused the pair to glide into view as I was watching. Fig. 45. A View of a Pair as Seen in the Lower Mirror of the Tank Note that the fingers of the male touch or overlap, and that the arms completely encircle the female, well forward of the main mass of eggs in the body of the female, and so ab
. The ecology and life history of the common frog (Rana temporaria temporaria). Rana temporaria. lyO ECOLOGY AND LIFE HISTORY OF THE COMMON FROG eggs there, even though this spot was a very small fraction of the available space. This behaviour is often found in the ponds. The recoil of the issuing eggs caused the pair to glide into view as I was watching. Fig. 45. A View of a Pair as Seen in the Lower Mirror of the Tank Note that the fingers of the male touch or overlap, and that the arms completely encircle the female, well forward of the main mass of eggs in the body of the female, and so able to do httle to expel the eggs by pressure. In this pair, the feet of the two frogs are in contact. Each of the two long toes on the right of the picture belongs to a different frog. the lower mirror, and it was the position of the arms of the female that drew my attention to the fact that she was spawning. Sperm Emission Stimulus It is essential in the Anura that the emission of sperm should occur at the same moment as the expulsion of the eggs, for fertihzation is only possible for a short time afterwards, probably because, as explained in Chapter i, precipitation of the outer globulin layer is so rapid. In. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Savage, Ronald Maxwell. New York, Hafner Pub. Co.
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Keywords: ., bookcentury1900, bookcollectionbiodiv, booksubjectranatemporaria
