. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. I 1-2 'O> 0 1 °'8 73 I °-6 o c 1 0 0 20 40 60 80 100 Percentage zooxanthellae Figure 2. Mycosporine-like ammo acids (MAAs) in specimens of Anthopleura elegantissima from Fidalgo Island. Washington, collected in 1993. (A) Proportion (molar fraction) of the total concentration of the four major MAAs represented by each. Data for 5 specimens were pooled regardless of their algal complement. Vertical bars represent ± 1 standard deviation (SD). (B) Concentration of individual MAAs in relation to the algal complemen
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. I 1-2 'O> 0 1 °'8 73 I °-6 o c 1 0 0 20 40 60 80 100 Percentage zooxanthellae Figure 2. Mycosporine-like ammo acids (MAAs) in specimens of Anthopleura elegantissima from Fidalgo Island. Washington, collected in 1993. (A) Proportion (molar fraction) of the total concentration of the four major MAAs represented by each. Data for 5 specimens were pooled regardless of their algal complement. Vertical bars represent ± 1 standard deviation (SD). (B) Concentration of individual MAAs in relation to the algal complement represented by zooxanthellae (percentage of total num- ber of algae, zoochlorellae plus zooxanthellae). M2 = mycosporine-2 glycine; MT = mycosporine-taurine; SH = shinorine; PR = porphyra-334. Algal complement does not affect the relative concentrations of mycospo- rine-taurine. shinorine, or porphyra-334; the concentration of mycospo- rine-2 glycine is positively related to the proportion of zooxanthellae (r~ "• , P = , n = 5). Assuming a fresh tissue water content of 80% (Shick. 1991). MAA concentrations shown in (B) can be multiplied by 5 to convert to dry weight for comparison with other data on MAA concentra- tions presented on that basis. not shown here. There was no obvious trend in the concen- tration of individual MAAs in anemones having mixed algal complements up to about 50% zooxanthellae: 50% zoo- chlorellae. However, the concentration of mycosporine-2 glycine in anemones harboring zooxanthellae exclusively was substantially greater than in anemones having mixed symbionts (Fig. 2B). There was a significant, positive rela- tion between the concentration of this MAA and the arcsine- transformed proportion of zooxanthellae in the anemones (;•- = , P = , n = 5). No other MAA con- centration showed any significant relationship to the pro- portion of zooxanthellae (P > in all cases). In the 1996 collection from the same site, the
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
