The influence of diet on fatty acids in the egg yolk of green sea turtles, Chelonia mydas

Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
Kathryn S CravenDavid W Owens

Abstract

Fatty acid concentrations found in the yolk of green sea turtles reflect differences in the diet of the mothers. All of the 12 fatty acids measured in yolk samples were significantly different between eggs produced from the pellet and wild-type diets. However, the relative pattern of yolk fatty acids in the green turtle mirrored those of other reptiles. Yolk samples contained mostly (63-67%) 14:0. 16:0, 16:1n-7 and 18:1n-9. Yolks from captive animals on pellet diet contained an additional 17.64% of the total yolk lipid as 12:0 and 18:2n-6. Wild yolks contained an extra 11.41% of lipid as 18:0 and 18:1n-7. Selection of fatty acids for the yolk should balance the energetic and anabolic needs of the embryo. Eggs are provisioned based on maternal metabolism of available nutrients and subtle differences between natural foods and those available in captivity could affect the viability of future eggs.

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Citations

Sep 23, 2011·Proceedings. Biological Sciences·Sam B WeberJonathan D Blount
Oct 12, 2012·Tropical Animal Health and Production·Jamile da Costa AraújoAlanna do Socorro Lima da Silva
Jan 23, 2021·Journal of Zoo and Wildlife Medicine : Official Publication of the American Association of Zoo Veterinarians·Khushboo DassKimberly Ange-van Heugten
Jun 17, 2021·Journal of Zoo and Wildlife Medicine : Official Publication of the American Association of Zoo Veterinarians·Elizabeth A KoutsosCraig A Harms

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