Host tracking and photosensitivity in Chaetogaster limnaei limnaei (Oligochaeta)
host tracking, photosensitivity, oligochaetes, Chaetogaster
Chaetogaster limnaei limnaei were separated from host snails (Physa skinneri) for increasing periods of time. The oligochaetes responded to a snail's slime trail by increased activity and distance moved along the slime trail. These responses increased with increasing periods of separation from the snail. When exposed to a directional light source, C. l. limnaei displayed an initial positive phototactic response. Movement towards light from the same direction decreased significantly in a second 4-h period, but movement towards light from a different direction was equivalent to the initial response, suggesting the response was an initial one to a change in light.
Shaw, R.W. (1992). Host tracking and photosensitivity in Chaetogaster limnaei limnaei (Oligochaeta). Canadian Journal of Zoology. 70(3): 578-581.
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