Niveoscincus metallicus is a small viviparous skink which provides a substantial amount of yolk to each of its developing embryos although some organic nutrients are also transferred across the placentae. The total amount of lipid present in the yolk of N. metallicus (37% of dry weight) is very much higher than that in the newborns (19% of dry weight), confirming that the yolk is utilised as an energy source during gestation. Triacylglycerols (TAG), which are storage compounds, are the major lipid resource available to the embryos and are present in relatively large amounts in the yolk of N. metallicus. Polar lipids (PL), which form the structural components of membranes, and sterols (ST), which are involved in the synthesis of hormones and vitamins, are also present in the yolk. The proportions of each of these lipid classes differs markedly between yolks and newborns. This may reflect variations in the role played by each lipid class in the provision of nutrients to, and development of, embryos. Copyright (C) 1998 Elsevier Science Inc.

Item Type:	Refereed Article
Research Division:	Biological Sciences
Research Group:	Physiology
Research Field:	Physiology not elsewhere classified
Objective Division:	Expanding Knowledge
Objective Group:	Expanding Knowledge
Objective Field:	Expanding Knowledge in the Environmental Sciences
UTAS Author:	Jones, SM (Professor Susan Jones)
UTAS Author:	Bennett, EJ (Ms Ellen Bennett)
UTAS Author:	Swadling, KM (Dr Kerrie Swadling)
ID Code:	14245
Year Published:	1998
Web of Science® Times Cited:	24
Deposited By:	Zoology
Deposited On:	1998-08-01
Last Modified:	2011-08-09
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