Pseudocentrotus depressus

In the sixties, however, sialoglycolipids were found in the tissues of some invertebrates, the sea urchins Arbacia punctuata,64 Pseudocentrotus depressus,6S and Strongylocentrotus intermedius.66 These compounds were soon found in other species belonging to the phylum Echinodermata, and their systematic study began. 

Kitamura, H., Kitahara, S., and Koh, H.B., The induction of larval settlement and metamorphosis of two sea urchins, Pseudocentrotus depressus and Anthocidaris crassispina, by free fatty acids extracted from the coralline red alga Corallina pilulifera, Mar. Biol., 115, 387, 1993. 

Kamerling, J.P., R. Schauer, J.F.G. Vliegenthart, and K. Hotta Identification of the Sialic Acids from the Egg Jelly Coat of the Sea Urchin Pseudocentrotus depressus (Okayama). Hoppe-Seyler s Z. Physiol. Chem. 361, 1511 (1980). 

Kamerling JP, Schauer R, Vliegenthart JF, Hotta K. Identification of the sialic acids from the egg jelly coat of the sea urchin Pseudocentrotus depressus (Okayama). Hoppe-Seylers Zeits-chrift fur Physiologische Chemie 1980 367 1511-1516. 

Tsushima, M., Kawakami, T., and Matsuno, T. (1993b) Metabolism of carotenoids in sea urchin Pseudocentrotus depressus. Comp. Biochem. Physiol., 106B, 737-741. 

In echinoderms, sialic acids are of common occurrence and are detected in most tissues of all species studied (Warren, 1963 Eldredge et al.y 1%3). Most of the sialic acids are of the N-glycolyl type, but the starfish, Asterias forbesi, possesses a unique species, possibly 8-meth-oxyl-N-glycolylneuraminic acid (Warren, 1963). Another novel sialic acid has been identified in the sea urchin, Pseudocentrotus depressus, with the structure N-acetoglycolyl-4-methyl-4,9-dideoxyneuraminic acid (Hotta t al., 1970f>), cf. Chapter 1. 

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