. The biology of the amphibia. Amphibians. 394 THE BIOLOGY OF THE AMPHIBIA modifies the reaction of the toad toward another object. It changes the toad's "point of ; Any object in a stable environment has a different significance for Amphibia at different times. This significance varies not only with experience but also with the physiological state of the animal. Haecker (1912) found that axolotls could be taught to distinguish between a piece of meat and one of wood of the same size. During the breeding season the number of errors in making. Fig. 134.—Glass plate experiment wit
. The biology of the amphibia. Amphibians. 394 THE BIOLOGY OF THE AMPHIBIA modifies the reaction of the toad toward another object. It changes the toad's "point of ; Any object in a stable environment has a different significance for Amphibia at different times. This significance varies not only with experience but also with the physiological state of the animal. Haecker (1912) found that axolotls could be taught to distinguish between a piece of meat and one of wood of the same size. During the breeding season the number of errors in making. Fig. 134.—Glass plate experiment with Bufo calamita. The position of the glass plate and the path selected by the toad are indicated for successive trials. {After Buytendijk.) this distinction increased. Flower (1927) found that axolotls during metamorphosis completely forgot earlier feeding experi- ences and had to be taught all over again. Sexual activity and metamorphosis may thus affect the learned behavior. No doubt hunger, noise, and other stimulations would also have an effect on learned behavior, whether or not acting directly on the reflexes. Amphibia show some aptitude in learning motor habits. Terrestrial forms such as toads and newts learn to find their way. 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 Noble, Gladwyn Kingsley, 1894-1940. New York : McGraw-Hill
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Keywords: ., bookcentury1900, bookpublishernewyorkmcgr, booksubjectamphibians
