INVESTIGADORES
SIMONCINI Melina Soledad
artículos
Título:
Physical and chemical characteristics of fertile and infertile of wild Caiman latirostris
Autor/es:
LEIVA, P.; LABAQUE, M.C.; FERNÁNDEZ, ME.; PIÑA ,C. I.; SIMONCINI, M.
Revista:
AQUACULTURE
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2018 p. 287 - 291
ISSN:
0044-8486
Resumen:
In oviparous species, physico-chemicalcharacteristics of eggs are an indicator of maternal physiological traits andenvironmental conditions of the site where the females develop. In this study,we aim to (a) determine the physico-chemicalcharacteristics of eggs from wild Caimanlatirostris populations; (b) evaluate if fertile and infertile eggs differin physico-chemical characteristics associated with suchest reproductivesuccess; and (c) compare the present results with findings in other crocodilianspecies to identify characteristics that would be associated with reproductivebiology and adaptations to their environments. Eggs were collected andidentified, and different morphometric variables, percentage of components, andprotein, total lipids and fatty acid composition were determined. Fertile andinfertile eggs did not differ in weight or component (eggshell, yolk and albumen) percentages of total egg weight. Fatty acid profiles of yolk differedbetween fertile and infertile eggs in C14:0, C16:1 and C17:1. However, thecomparison of profiles among clutches showed differences in 12 fatty acids. Wealso observed differences in percentage of egg components respect othercrocodilian species, particularly of albumen,which had a lower proportion in C.latirostris. Our results suggest that egg infertility may not be related tomaternal lipid investment. Wepropose using yolk of infertile eggs (whichis similar to that of fertile eggs) as a non-invasive method to identify and evaluatethe difference in FA composition of eggs for breedings female of varyns diets.