Bioluminescent countershading in midwater animals: evidence from living squid.
@article{Young1976BioluminescentCI, title={Bioluminescent countershading in midwater animals: evidence from living squid.}, author={Richard Edward Young and Clyde F. E. Roper}, journal={Science}, year={1976}, volume={191 4231}, pages={ 1046-8 } }
Midwater squid respond to overhead illumination by turning on numerous downward-directed photophores; they turn off the photophores when overhead illumination is eliminated. The squid are invisible when the intensity of the photophores matches the intensity of the overhead illumination. These results strongly support the theory of ventral bioluminescent countershading.
79 Citations
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References
SHOWING 1-6 OF 6 REFERENCES
Lantern Fish compare Downwelling Light and Bioluminescence
- Environmental ScienceNature
- 1974
The ventral photophores of some mesopelagic fishes in the upper regions of the sea may produce bioluminescence that matches the colour and intensity of environmental light passing downwards on either side of the fish.
Light to Hide by: Ventral Luminescence to Camouflage the Silhouette
- Environmental ScienceScience
- 1971
An experimental analysis of this luminescent system supports the hypothesis that it functions by emitting light during the daytime, which matches the background light and thereby obscures the silhouette of the animal.
The angular distribution of the light produced by some mesopelagic fish in relation to their camouflage
- Environmental ScienceProceedings of the Royal Society of London. Series B. Biological Sciences
- 1972
The angular distributions of luminescent light produced by two oceanic fish, Argyropelecus affinis and Chauliodus sloani, were measured in two vertical planes, one containing the antero-posterior…
Ceratoscopelus maderensis: Peculiar Sound-Scattering Layer Identified with This Myctophid Fish
- Environmental ScienceScience
- 1968
A sound-scattering layer, composed of discrete hyperbolic echosequences and apparently restricted to the Slope Water region of the western North Atlantic, has been identified from the Deep…
The Vertical Distribution of Pelagic Decapods [Crustacea: Natantia] Collected on the Sond Cruise 1965 II. The Penaeidea and General Discussion
- Environmental Science
- 1970
This paper represents the second and final part of a study of the depth distribution and diurnal migration of pelagic decapod crustaceans in an area of the eastern North Atlantic. Part I (Foxton,…