The Effect of Light and Soil Moisture on the Environmental Behavior of Newts (Triturus vittatus vittatus, Urodela): A Detailed Study
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
Migal-Galilee Technology Center, Kiryat Shmona, Israel and School of Science and Technology, Tel-Hai Academic College, Tel Hai, Israel.
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