Peltodoris atromaculata

Establishment of the dietary or symbiotic origin of sterols could be a difficult task, unless the tracer sterol has an unusual structure and restricted occurrence. There is little doubt, for example, that petrosterol (59) found in the nudibranch Peltodoris atromaculata [112] arises from predation of the mollusc on the sponge Petrosia ficiformis, from which the sterol was first isolated [113]. However, the origin of gorgosterol (60) in Tridacna species has not yet been established [114] despite its unusual structure. 

Castiello, D., Cimino, G., De Rosa, S., De Stefano, S., Izzo, G., and Sodano, G., Studies on the chemistry of the relationship between the opisthobranch Peltodoris atromaculata and the sponge Petrosiaficiformis, in Biologie des Spongiaires, Levi, C. and Boury-Esnault, N., Eds., Centre Nationale de la Recherche Scientifique, Paris, 1979, 413. 

Castiello, D., G. Cimino, S. de Rosa, S. de Stefano, and G. Sodano High Molecular Weight Polyacetylenes from the Nudibranch Peltodoris atromaculata and the Sponge Petrosia ficiformis. Tetrahedron Lett. 21, 5047 (1980). 

Peltodoris atromaculata Acetylenic compounds Petrosiaficiformis Kazlauskas et o/., 1978 Castiello eto/., 1980... 

---