Phospholipid patterns of two symbiote-harbouring weevils, the rice weevil, Sitophilus oryzae L., and the corn weevil, Sitophilus zeamais (Mots.) (Coleoptera: Curculionidae)
Yadava, R.P.; Musgrave, A.J.
Comparative Biochemistry and Physiology. B Comparative Biochemistry 42(1): 197-200
1.1. Total lipid content and phopholipid patterns of 0–6-day-old adult Sitophilus oryzae and S. zeamais were investigated by two-dimensional thin-layer chromatography and spectrophotometry.2.2. S. oryzae and S. zeamais had 4·8 and 3·8 per cent total lipids respectively (fresh weight). Phospholipids were 17 per cent total lipids in S. oryzae; 26 per cent in S. zeamais.3.3. In both weevils, phospholipids detected were phosphatidyl ethanolamine, phosphatidyl choline, phosphatidyl serine, lyso-phosphatidyl ethanolamine, lyso-phosphatidyl choline, sphingomyelin, possibly phosphatidyl inositol and three unknowns.4.4. Phosphatidyl ethanolamine was the predominant phospholipid fraction: 53·7 per cent of lipid phosphorus in S. oryzae; 47·8 per cent in S. zeamais. Phosphatidyl choline and phosphatidyl serine fractions were respectively 26·2 per cent and 5·9 per cent of lipid phosphorus in S. oryzae; 26·6 per cent and 10·3 per cent in S. zeamais.