IIBYT   23944
INSTITUTO DE INVESTIGACIONES BIOLOGICAS Y TECNOLOGICAS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Preliminary study of the fatty acid profile of fertile and infertile eggs of wild Caiman latirostris.
Autor/es:
PAMELA, LEIVA; ; MA. CARLA, LÁBAQUE;; MELINA, SIMONCINI; ; MA EMILIA, FERNÁNDEZ; ; CARLOS I., PIÑA.
Lugar:
Louisiana
Reunión:
Congreso; 23 th Working Meeting Crocodiles Specialist Group- UICN.; 2014
Resumen:
The lipids are the major nutritive components of the eggs of reptiles and, the fatty acids derived from the yolk lipids are the main energy source for embryonic development. Among fatty acids, the essential polyunsaturated fatty acids are vital for the embryo development and, consequently, the lack of some of these components compromises the hatching success. We compared the total fatty acid profile in fertile and infertile eggs of wild C. latirostris. We analyses the fatty acids composition in yolk of eggs collected (9 infertile and 11 fertile eggs) using the technique of methyl esters and, then analyzing them by GCMS. The results showed that fertile eggs had a higher percentage of oleic (C18:1) and total monounsaturated fatty acids and a lower percentage of palmitic (C16:0), heptadecenoic acid (C17:1), linoleic (C18:2), and total saturated fatty acids, respect to infertile eggs. The oleic fatty acids (C18:1) belong to one of the three families of unsaturated fatty acids which have greater biological importance for embryonic development in oviparous species, because they are precursors of polyunsaturated fatty acids of long chain. Thus it is probably that differences in the fatty acid composition of the yolk could be associated with fertility and hatching success of eggs. In this context, it would be interesting to evaluate in future studies whether changes in the chemical composition of fertile eggs may be associated with an increased hatching success of eggs and/or survival of offspring.