Graduate Thesis Or Dissertation
 

The algal symbionts of the solitary green sea anemone Anthopleura xanthogrammica

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  • The anemone Anthopleura xanthogrammica varies in color from bright green to muddy brown. However, individuals found in caves are white. White specimens of Anthopleura xanthogrammica collected from dark caves along the Oregon coast were subjected to various experiments to determine if these cave dwelling animals carried any cells of the algal symbiont, and to ascertain whether adults could become infected by feeding, injecting and placing in the surrounding water algal cells which had been extracted from exposed anemones. Fresh smears and prepared sections showed that the white anemones were completely devoid of any algal cells and that adults of these apparently were not susceptible to infection by cells removed from naturally infected forms. Algal cells extracted from exposed forms of A. xanthogrammica were of two colors: green and brown. Two-dimensional paper and thin layer chromatography with spectrophotometric analysis proved that the green cells contained a complement of pigments characteristic of and unique to green algae while the brown cells contained a complement of pigments characteristic of and unique to dinoflagellates.
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