. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 294 S. G. DOVE ET AL similar to those of Pocillopora damicornis. All five species have a peak related to the presence of mycosporine-like amino acids that elutes at about 37 min (MAA, Fig. 6), a group of peaks that elute between 20 and 30 min. and a void volume peak that elutes at approximately 14 min (I,,. Fig. 6). S. hystrix and S. pistillata had Xmax about equal to 560 nm (Fig. 6). had Xmax about equal to 578 nm and a shoulder at about 550 nm (Fig. 6). In the blue Acropora species. A. formosa, there is a shift i
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 294 S. G. DOVE ET AL similar to those of Pocillopora damicornis. All five species have a peak related to the presence of mycosporine-like amino acids that elutes at about 37 min (MAA, Fig. 6), a group of peaks that elute between 20 and 30 min. and a void volume peak that elutes at approximately 14 min (I,,. Fig. 6). S. hystrix and S. pistillata had Xmax about equal to 560 nm (Fig. 6). had Xmax about equal to 578 nm and a shoulder at about 550 nm (Fig. 6). In the blue Acropora species. A. formosa, there is a shift in the native molecular weight (MW) of the pigment from 54 kD (native MW of P. damicornis, S. hystrix. S. pistil- lata. and Acropora digitifera) to kD (cf. peak position relative to dotted line. Fig. 7). However, in all coral species examined, SDS-PAGE of corresponding gel filtration fractions showed a single band with a subunit molecular weight of about 28 kD (Fig. 8, data not shown for A. dig- itifera). The front shoulder fractions, which absorb min- imally at X = max (560-590) nm and variably at 400 nm (Fig. 7), show a more complex banding pattern that con- tains both the 28-kD subunit and a 40-kD subunit amongst a smear of other bands (Fig. 8: S pistillata. lane 1; P damicornis, lane 1; S. hystrix, lane 5). Gel filtration chromatograms suggest that compounds absorbing at about 400 nm are more closely associated with a peak whose approximate molecular weight is 112 kD than with the pocilloporin or pocilloporin-like compound peak (Fig. 7). Discussion The colors that typify many members of the animal kingdom have a variety of roles that range from crypsis to courtship (McFall-Ngai, 1990; Dawkins and Guilford, 1993). Although the role of color has been explored ex- tensively in some groups ( insects: Endler. 1981; birds: Owen, 1980; fish: Neal, 1993), an understanding of the function of color in others is lacking. Reef-building corals fall into the latter category. Thi
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
