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Negative phototaxis in crustacean larvae: Possible functional significance

Publication ,  Journal Article
Forward, RB
Published in: Journal of Experimental Marine Biology and Ecology
January 1, 1974

Phototaxis of stage I larvae of the crab Rhithropanopeus harrisi (Gould) was quantitatively monitored by a microscope-television system. After dark-adaptation there is negative phototaxis only at the highest stimulus intensity, whereas the animals respond positively to intensities between 1.0 and 0.0006 W m-2. After light-adaptation there is positive phototaxis at intensities above 0.005 W m-2 while a negative response is observed to a lower range of intensities. Mean swimming speed during positive phototaxis does not vary with dark or light-adaptation or with stimulus intensity; however, during the negative response after light-adaptation speeds are intensity-dependent and are significantly faster at the highest response-initiating intensities than during a positive response. Arguments are presented to show that this negative response 1) may act as a shadow reflex, and 2) might be important in vertical movements. © 1974.

Duke Scholars

Published In

Journal of Experimental Marine Biology and Ecology

DOI

ISSN

0022-0981

Publication Date

January 1, 1974

Volume

16

Issue

1

Start / End Page

11 / 17

Related Subject Headings

  • Marine Biology & Hydrobiology
  • 07 Agricultural and Veterinary Sciences
  • 06 Biological Sciences
  • 05 Environmental Sciences
 

Citation

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MLA
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Forward, R. B. (1974). Negative phototaxis in crustacean larvae: Possible functional significance. Journal of Experimental Marine Biology and Ecology, 16(1), 11–17. https://doi.org/10.1016/0022-0981(74)90069-0
Forward, R. B. “Negative phototaxis in crustacean larvae: Possible functional significance.” Journal of Experimental Marine Biology and Ecology 16, no. 1 (January 1, 1974): 11–17. https://doi.org/10.1016/0022-0981(74)90069-0.
Forward RB. Negative phototaxis in crustacean larvae: Possible functional significance. Journal of Experimental Marine Biology and Ecology. 1974 Jan 1;16(1):11–7.
Forward, R. B. “Negative phototaxis in crustacean larvae: Possible functional significance.” Journal of Experimental Marine Biology and Ecology, vol. 16, no. 1, Jan. 1974, pp. 11–17. Scopus, doi:10.1016/0022-0981(74)90069-0.
Forward RB. Negative phototaxis in crustacean larvae: Possible functional significance. Journal of Experimental Marine Biology and Ecology. 1974 Jan 1;16(1):11–17.
Journal cover image

Published In

Journal of Experimental Marine Biology and Ecology

DOI

ISSN

0022-0981

Publication Date

January 1, 1974

Volume

16

Issue

1

Start / End Page

11 / 17

Related Subject Headings

  • Marine Biology & Hydrobiology
  • 07 Agricultural and Veterinary Sciences
  • 06 Biological Sciences
  • 05 Environmental Sciences