AGRO 136 |
| Conjugated linoleic acid (CLA) refers to a group of isomers of octadecadienoic acids with double bonds commonly at positions 9 and 11, 10 and 12, or 13 and 15. These unusual fatty acids are produced naturally in the rumen of ruminant mammals by microorganisms. Dietary CLA has been shown to alter the fatty acid profiles of hen body tissues and egg yolk lipids. CLA is thought to inhibit Δ6- and Δ9-desaturases because dietary CLA decreases monounsaturated fatty acids (MUFA) and polyunsaturated fatty acids (PUFA) and increases saturated fatty acids (SFA) in hen eggs. Hen body weight gain and rate of egg production has been shown to be affected adversely by a CLA-enriched diet. Little is known of the effects of a CLA-enriched diet on insects. A published study of dietary CLA effects on the house fly, Musca domestica, demonstrated CLA accumulation in body lipids with no adverse effects on development. However, we have observed that European corn borers, Ostrinia nubilalis, exhibit adverse effects in response to dietary CLA; they demonstrated decreased survival and an increased growth period. Our objective in this study is to examine the effect of dietary CLA on the fatty acid profile of pupa and adult corn borers. We expect to find CLA isomers in the insect tissues and altered fatty acid profiles. |
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Agrochemical Education Awards For Graduate Student Travel: Research Poster Presentations
1:00 PM-5:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster
Sci-Mix
Division of Agrochemicals |