Effects of Partial Sugar Deprivation on Lifespan and Carbohydrate Mobilization in the Parasitoid Macrocentrus grandii (Hymenoptera: Braconidae)

By H. Fadamiro, G. Heimpel. 2001

90 citations recorded by the source corpus.

Abstract We compared the lifespan of Macrocentrus grandii (Goidanich) adults fed a 50% sucrose solution at various intervals throughout their lives. Treatments included starvation, continuous feeding, feeding on the first day of life only, and feeding every second, third, or fourth day of life. Life expectancy for starved males and females was less than 3 d, and providing sugar during the first day of life increased life expectancy by 2 d for males and 4 d for females. Life expectancy was highest when adults were fed continuously (14 d for males and 21 d for females) or every 2 d (17 d for males and 23 d for females). The life expectancy of adults that were fed either every 3 or every 4 d ranged between 9 and 16 d. Together, these results demonstrate that a constant supply of sugars is not necessary to achieve maximum survivorship, and limited sugar availability may suffice to increase substantially the lifespan of M. grandii over starvation values. A series of anthrone tests was used to determine levels of gut sugars, simple storage sugars (‘body sugars’; primarily trehalose), and glycogen over the first 6 d of life of female and male M. grandii that were either fed 50% sucrose continuously, the first day of life only, or not at all. A single day of sugar feeding led to apparently maximum levels of gut sugars, body sugars, and glycogen, and parasitoids fed only on the first day of life maintained high levels of these nutrients for 1 d postfeeding. After this time, glycogen and gut sugars decreased substantially, but body sugar levels remained essentially constant. This pattern suggests a strategy in which gut sugars and glycogen are mobilized to maintain high levels of body sugars in starving parasitoids.

Subfields: Ecology, Evolution, Behavior and Systematics, Insect Science

View Paper: https://www.semanticscholar.org/paper/493af3c2a5319a83b22d890f9701ef5d76fb55cc

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Citations in the corpus

The impact of adult diet on parasitoid reproductive performance (2017, background): “For Macrocentrus grandii (Goidanich), a constant supply of sugars is not necessary to achieve the maximum survivorship (Fadamiro and Heimpel 2001).”
HPLC sugar analysis reveals the nutritional state and the feeding history of parasitoids (2004, background): “Carbohydrate levels (glycogen and sugars) increase when parasitoids are provided with sucrose and are therefore a suitable indicator of the nutritional state of parasitoids (Fadamiro & Heimpel 2001; Giron & Casas 2003).”
Influence of floral resources on sugar feeding and nutrient dynamics of a parasitoid in the field (2006, result): “…sugar and glycogen levels of fed wasps were elevated compared to wasps that did not feed, consistent with laboratory studies ( Olson et al. , 2000; Fadamiro & Heimpel, 2001; Giron & Casas, 2003; Lee et al. , 2004; Heimpel et al. , 2004 ); however, lipid levels were lower in fed than unfed wasps.”
Effects of feeding frequency and sugar concentration on behavior and longevity of the adult aphid parasitoid: Aphidius ervi (Haliday) (Hymenoptera: Braconidae) (2004, background): “When we compare A. ervi to other braconids it is interesting thatMacrocentrus grandii, a parasitoid of the European corn borer Ostrinia nubilatis, attains a maximum longevity by feeding on 50% (w/w) sucrose solution every two days (Fadamiro and Heimpel, 2001).”
Effects of honeydew sugar composition on the longevity of Aphidius ervi (2007, background): “It can increase reproductive fitness of parasitoids by increasing their longevity, fecundity, and/or parasitism rate (Jervis et al., 1996; Fadamiro & Heimpel, 2001; Siekmann et al., 2001; Wäckers, 2001; Winkler et al., 2006).”
Comparing floral nectar and aphid honeydew diets on the longevity and nutrient levels of a parasitoid wasp (2004, background): “Furthermore, M. grandii fed sucrose and subsequently starved showed a significant drop in body sugars and glycogen within 2 days (Fadamiro & Heimpel, 2001).”