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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Nutritional regulation in the generalist caterpillar Spodoptera exigua (Hübner)

Merkx-Jacques, Magali. January 2006 (has links)
No description available.
2

Nutritional regulation in the generalist caterpillar Spodoptera exigua (Hübner)

Merkx-Jacques, Magali. January 2006 (has links)
Regulation of nutritional intake by herbivorous insects often leads to optimal performance. When given choices, beet armyworm, Spodoptera exigua, caterpillars selected a diet with a protein to digestible carbohydrate ratio of 22p:20c. Restriction to carbohydrate-biased diets led to increased mortality and developmental time. On protein-biased diets, caterpillars possessed metabolic strategies to maintain optimal performance. / Caterpillar glucose oxidase (GOX), which catalyzes the oxidation of glucose, may be a pre-ingestive mechanism to cope with excess dietary carbohydrates. GOX activity was highest in the labial salivary glands of 4th instar caterpillars and was higher in caterpillars reared on a meridic artificial diet (AD) compared to those fed Medicago truncatula. Following transfer from plants, labial salivary GOX activity increased with time spent on AD suggesting that a dietary factor is involved in this enzyme's regulation. Dietary carbohydrate levels do not appear to regulate GOX activity; however nutritional content may play a role its regulation.

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