Effect of Carbohydrate Nutrition on Egg Load and Population Parameters of Four Trichogramma Species

Trichogramma parasitoids are the most widely used biocontrol agents and play a crucial role in biological control of agricultural forest pests. Many studies have shown that feeding on carbohydrate rich diet can effectively improve their egg laying capacity longevity. However, few reported impact carbohydrate-rich parameters different species parasitoids. In this study, we compared differences between four (T. dendrolimi, T. chilonis, leucaniae ostriniae) before after diet. The results showed all improved feed After eclosion, dendrolimi had highest load (51.89 eggs) followed by chilonis (26.86 eggs), ostriniae (24.71 (12.44 eggs). an increased trend (66.7–86.21 diet, (33.12–45.56 as to other three species. Furthermore, benefited much less from ingestion only accelerated maturation was observed. Most loads consisted matured eggs, so mature eggs same load. We also tested population using TWOSEX-MSChart. fed with honey higher fecundities, i.e., (146.64), (173.53), (83.69), (80.45), than when water, 78.49, 40.15, 32.45 35.47, respectively. intrinsic rate increase r (0.4178 d−1, 0.3933 d−1), finite λ (1.5186 1.4818 net reproductive R0 (130 offspring, 147.4 offspring), (r = 0.3373 0.3317 d−1; 1.4011 1.3934 73.2 68.1 offspring) conclude significantly enhanced efficacy Trichogramma, but performance differed among study contribute improving efficient application field.