Lipid composition of marine and estuarine invertebrates. Part II: Mollusca

Sexual Differences in Gonad Fatty Acid Compositions in Dominant Limpets Species from the Sanriku Coast in Northern Japan.

“…of whole gonads without regard to limpet sex (1)(2)(3). Still, this parameter in the testis and ovary in limpets remains essentially unclarif ied, except for the Turbinidae family; Subninella undulata (1).…”

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“…It was suggested that these fatty acids in animals are derived almost exclusively from food sources and are biochemically inert (Paradis and Ackman, 1977). On the other hand, some authors suppose that these in aquatic invertebrates have an endogenous origin (Joseph, 1982;Zhukova, 1986Zhukova, , 1991. As it has been mentioned in most of the other freshwater mollusc studies, in the analyses, none of the tissues of U. elongatulus contained NMID fatty acids which are mostly indicated as constituents of the polar lipids of marine molluscs (Pollero et al, 1981(Pollero et al, , 1983Dembitsky et al, 1992;Fried et al, 1993).…”

“…C20:4ω6 acid accounted for only 0-5% of the total fatty acids in marine bivalves (Gardner and Riley, 1972;Watanabe and Ackman, 1974;Paradis and Ackman, 1977;Joseph, 1982) and 5-10% in marine gastropods (Paradis and Ackman, 1977;Johns et al, 1980;Joseph, 1982). Marine molluscs are generally rich in fatty acids of ω3 (especially C18:3ω3, C20:5ω3 and C22:6ω3).…”

“…Apart from their commercial value for use as a human foodstuff and in the feeding of several marine crustaceans (Deshimaru et al, 1979;Cotronea et al, 1980), the biological and pharmacological role of the polyunsaturated fatty acids (PUFAs) contained in them is of notable interest, above all since it was found that C20:5ω3 acid may be useful in the treatment of some cardiovascular diseases (Joseph, 1982). For these reasons, fatty acid composition of bivalves has been mostly studied (Beninger et al, 1985;Khardin et al, 2003;Milke et al, 2004Milke et al, , 2006Alkanani et al, 2007;Ekin et al, 2008).…”

Profiling of bioactive lipids of the wild edible land snails of the genus Helix

“…We found that the PL was mainly composed of PE, PS, PC, CAEP and DPG. The latter PL is relatively abundant in some invertebrates, and it has been detected previously in many freshwater and marine mollusks [17][18][19][20][21][22][24][25][26]. The relative contents of the major PL classes were 23-33% for PE, 42-48% for PC, and 12-17% for PS (Table 1).…”