INVESTIGADORES
LABAQUE Maria Carla
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 of chicks. 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.