Under controlled conditions, the effects of light and moisture on the response of metamorphosed newts (Triturus vittatus vittatus) to hiding places were investigated. There were no significant differences (X2-test; P > 0.05) between the hiding places covered with black or transparent paper used as controls for the experiments. Soil moisture and negative phototaxis had a significant impact on the newts' choice of hiding place. Significant differences (X2-test; P 0.05) were discovered in the selection. of hiding spots between those covered in black paper and those covered in transparent, differently colored paper (transmitting different wavelengths of light): colorless, yellow, red, blue, and green. The negative phototaxis varied according to wavelength. Moisture elicited a stronger response than light. Juvenile T. v. vittatus preferred moist soil in hiding places covered by black or transparent paper in all combinations tested, and the differences were significant (X2-test; P 0.001).
Author (s) Details
Gad Degani
Migal-Galilee Technology Center, Kiryat Shmona, Israel and School of Science and Technology, Tel-Hai Academic College, Tel Hai, Israel.
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