TY - JOUR
T1 - Sugar convertibility in the parasitoid Cotesia glomerata (Hymenoptera: Braconidae)
AU - Hausmann, C.
AU - Wäckers, F.L.
AU - Dorn, S.
N1 - Reporting year: 2005
Metis note: 3749; CTE; MTI; file:///L:/Endnotedatabases/NIOOPUB/pdfs/Pdfs2005/Hausmann_ea_3749.pdf
PY - 2005
Y1 - 2005
N2 - Lack of suitable sugar sources for adult parasitic wasps is an important cause of failure in biological control programs, but the metabolic constraints of sugar feeding are poorly understood. Here we investigated the suitability of 11 naturally occurring sugars as energy sources for the parasitoid Cotesia glomerata (L.) (Hymenoptera: Braconidae). By feeding energy-deprived individuals with given quantities of a 40% (w:w) sugar solution, we assessed recovery time and lifespan after feeding. More than 50% of the wasps recovered within 20 min, and at least 80% within 60 min after uptake of one of the monosaccharides fructose or glucose, the disaccharide sucrose, or the trisaccharide melezitose. Between 40 to 80% of the test insects recovered within an hour after intake of maltose, raffinose, galactose, or mannose. Less than 25% recovered within 1 h after uptake of melibiose, trehalose, rhamnose, or water (control). Parasitoids obtained the highest lifespan benefits after intake of glucose, fructose, sucrose, or melezitose, indicating and confirming their convertibility as an energy source for C. glomerata. In contrast, no lifespan increase was found after consumption of rhamnose and trehalose. The differences in recovery time and lifespan are discussed in terms of parasitoid enzyme activity and metabolic processes. [KEYWORDS: saccharides ; Cotesia glomerata ; parasitoid ; convertibility ; sugar ; longevity ; recovery]
AB - Lack of suitable sugar sources for adult parasitic wasps is an important cause of failure in biological control programs, but the metabolic constraints of sugar feeding are poorly understood. Here we investigated the suitability of 11 naturally occurring sugars as energy sources for the parasitoid Cotesia glomerata (L.) (Hymenoptera: Braconidae). By feeding energy-deprived individuals with given quantities of a 40% (w:w) sugar solution, we assessed recovery time and lifespan after feeding. More than 50% of the wasps recovered within 20 min, and at least 80% within 60 min after uptake of one of the monosaccharides fructose or glucose, the disaccharide sucrose, or the trisaccharide melezitose. Between 40 to 80% of the test insects recovered within an hour after intake of maltose, raffinose, galactose, or mannose. Less than 25% recovered within 1 h after uptake of melibiose, trehalose, rhamnose, or water (control). Parasitoids obtained the highest lifespan benefits after intake of glucose, fructose, sucrose, or melezitose, indicating and confirming their convertibility as an energy source for C. glomerata. In contrast, no lifespan increase was found after consumption of rhamnose and trehalose. The differences in recovery time and lifespan are discussed in terms of parasitoid enzyme activity and metabolic processes. [KEYWORDS: saccharides ; Cotesia glomerata ; parasitoid ; convertibility ; sugar ; longevity ; recovery]
U2 - 10.1002/arch.20093
DO - 10.1002/arch.20093
M3 - Article
SN - 0739-4462
VL - 60
SP - 223
EP - 229
JO - Archives of Insect Biochemistry and Physiology
JF - Archives of Insect Biochemistry and Physiology
IS - 4
ER -