. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 324 J. M. SHICK ET AL A. 400- 200- _ _ *> control nmol / anemone B "5 -o CD _Q CO n "CD TD C _<D fC CO 1 CO c _0) "o c 20 0 100 CO "6 c 1 n " - ^ 300- 150- 3 4 8 Days since feeding / ^ "o "-. 1 i i -da § u_ 2 0 CD f, S. n 4-day Days since feeding 120- 60- 0 4 Days since feeding. D 0- 4-day Figure 8. (A) Concentrations of the major mycosporine-like amino acids (MAAs) from the lenses of lumpfish (Cyclo/ncrim Imn/nis) present in two specimens of Anthopleura elegantissima 4 and 8 day
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 324 J. M. SHICK ET AL A. 400- 200- _ _ *> control nmol / anemone B "5 -o CD _Q CO n "CD TD C _<D fC CO 1 CO c _0) "o c 20 0 100 CO "6 c 1 n " - ^ 300- 150- 3 4 8 Days since feeding / ^ "o "-. 1 i i -da § u_ 2 0 CD f, S. n 4-day Days since feeding 120- 60- 0 4 Days since feeding. D 0- 4-day Figure 8. (A) Concentrations of the major mycosporine-like amino acids (MAAs) from the lenses of lumpfish (Cyclo/ncrim Imn/nis) present in two specimens of Anthopleura elegantissima 4 and 8 days after ingesting a lens. Shaded area represents 95% confidence interval for pre-feeding concentrations of MAAs based on analyses of three unfed clonemates (controls) of the experimental anemones. Palylhene was not present in the control anemones. (B) Where significant, the increase in total MAA content (AMAA, Fed minus Control) of an anemone eating a lens (solid bars) is compared with the amount of that MAA available in the contralateral lens (shaded bars) from the same tish. Role of al)>iil eiiilosvmhionts in determining the complements of MAAs in the anemones The foregoing says nothing of the possible role of the algal endosymbionts—another layer of genotypic complex- ity to be considered—although the adoption of symbiosis itself is a trait that has been important in the evolution of the genus (Geller and Walton. 2001). Our data for the Wash- ington specimens of A. elegantissima that harbored exclu- sively zooxanthellae or zoochlorellae (the extremes of the continuum in Fig. 2B) clearly demonstrate that the identity of the alga does not qualitatively affect the MAAs that are present in the consortium. This in turn strongly suggests that, in these anemones, the algal endosymbionts are not the source of the MAAs in the consortium, although the algae might provide a necessary precursor (such as deoxygadusol: Shick and Dunlap, 2002). That the algae do not determine the M
Size: 1973px × 1267px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
