Lipid metabolism during oöcyte growth in the ovoviviparous cockroaches Eublaberus posticus and Nauphoeta cinerea

Sroka, Paul; Barth, Robert H.

doi:10.1016/0020-1790(75)90044-x

Cited by 4 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2003). Concomitant decreases in the total lipid content of the fat body and accumulation in the ovaries, as described for Eublaberus posticus and Nauphoeta cinerea (Sroka & Barth 1975, 1976), show that lipids are released into the hemolymph from triacylglycerols stored in the fat body. In general, diacylglycerols represent the main lipid component of hemolymph.…”

Section: Introductionmentioning

confidence: 73%

“…These triacylglycerols can be hydrolyzed to diacylglycerols, which are released into the hemolymph when required by other tissues, such as muscles during flight or ovaries during reproduction (Chino 1985;Beenakkers et al 1985;Downer 1985;Arrese et al 2001;Canavoso et al 2001;Jouni et al 2003). Concomitant decreases in the total lipid content of the fat body and accumulation in the ovaries, as described for Eublaberus posticus and Nauphoeta cinerea (Sroka & Barth 1975, show that lipids are released into the hemolymph from triacylglycerols stored in the fat body. In general, diacylglycerols represent the main lipid component of hemolymph.…”

Section: Introductionmentioning

confidence: 92%

See 1 more Smart Citation

Changes in the lipid and fatty acid composition of hemolymph and ovaries during the reproductive cycle of Labidura riparia

Sayah

2008

Entomological Science

View full text Add to dashboard Cite

Lipid metabolism was investigated during the reproductive cycle of Labidura riparia (Pallas). The lipid classes and their constitutive fatty acids present in hemolymph and ovaries were measured using thin-layer chromatography and gas-liquid chromatography. In the hemolymph, total lipids increase steadily from the previtellogenic period to vitellogenic arrest. These lipids are predominantly diacylglycerols and phospholipids. In the ovaries, total lipids increase during vitellogenesis then decrease during the vitellogenesis arrest period. The major lipids are triacylglycerols, followed by phospholipids. In both hemolymph and ovaries, all lipid classes contained variable proportions of seven main fatty acids: the saturated fatty acids myristic acid (14:0), palmetic acid (16:0), and stearic acid (18:0); the monounsaturated fatty acids palmitoleic acid (16:1) and oleic acid (18:1); and the polyunsaturated fatty acids linoleic acid (18:2) and linolenic acid (18:3). Unsaturated fatty acids predominate throughout the reproductive cycle. The percentage compositions of total and triacylglycerol fatty acids do not change markedly during the reproductive cycle in hemolymph nor in ovaries, with 18:2, 18:1 and 16:0 fatty acids being the major components. However, for diacylglycerols and phospholipids, the proportions of fatty acids vary systematically. For phospholipids during the vitellogenesis period, 18:2 increases considerably whereas other fatty acids decrease; for diacylglycerols, these fatty acids vary in the reverse way.

show abstract

Section: Introductionmentioning

confidence: 73%