caa a22 4500 465766811 CHVBK 20180323111916.0 cr unu---uuuuu 170327e19901101xx s 000 0 eng 10.1007/BF02544041 doi (NATIONALLICENCE)springer-10.1007/BF02544041 Embryonic fatty acid composition as a function of yolk fatty acid composition in eggs of the lesser spotted dogfish ( Scyliorhinus canicula L.) [Elektronische Daten] [Jose Diez, John Davenport] Yolk and embryonic total lipids were extracted from spotted dogfish eggs at two developmental stages. Total lipids were fractionated into neutral lipids (NL) and polar lipids (PL), and the fatty acid composition of each group was determined. Yolk lipid composition was found to be quantitatively different (NL/PL≊1) from embryo lipid composition (NL/PL≊0.5), for both stages of development. However, individual fatty acid composition did not differ from younger to older eggs for either yolk or embryo. There were significant differences (p<0.05) in major fatty acid groups from yolk and embryonic PL for saturated fatty acids, monounsaturated fatty acids (MUFA) and n−3 polyunsaturated fatty acids (PUFA) for younger eggs, and for MUFA and n−3 PUFA for older eggs. For NL, only MUFA composition from the oldest eggs showed differences between yolk and embryo. Results are discussed in terms of embryonic needs for highly unsaturated fatty acid (HUFA) biosynthesis, as well as to provide some explanations for the unusually high levels of 20∶4n−6 in both yolk and embryonic neutral lipids and polar lipids. American Oil Chemists' Society, 1985 Diez Jose Departamento de Bjoquimica y Biologia Molecular y Fisiologia, Facultad de Ciencias, Universidad de Valladolid, 47005, Valladolid, Spain aut Davenport John Marine Biology Laboratories, School of Ocean Sciences, Menai Bridge, LL59 5EY, Gwynedd, U.K. aut Lipids Springer-Verlag 25/11(1990-11-01), 724-728 0024-4201 25:11<724 1990 25 11745 https://doi.org/10.1007/BF02544041 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02544041 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Diez Jose Departamento de Bjoquimica y Biologia Molecular y Fisiologia, Facultad de Ciencias, Universidad de Valladolid, 47005, Valladolid, Spain aut NATIONALLICENCE 700 1- Davenport John Marine Biology Laboratories, School of Ocean Sciences, Menai Bridge, LL59 5EY, Gwynedd, U.K aut NATIONALLICENCE 773 0- Lipids Springer-Verlag 25/11(1990-11-01), 724-728 0024-4201 25:11<724 1990 25 11745 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer