Effect of nutrition of parasites with nectar of melliferous plants on parasitism of the elm bark beetles (Col., Scolytidae)

Abstract

In the forest of Kljestevica, the elm is attacked by four species of elm bark beetles: Scolytus multistriatus (Marsh.), Scolytus scolytus (Fab.), Scolytus pygmaeus (Fab.) and Scolytus ensifer (Rich.) (Col., Scolytidae). Scolytus multistriatus and S. pygmaeus are the most numerous species. Elm bark beetle is parasitized by four species of parasites: Dendrosoter protuberans (Nees), Ecphylus silesiacus (Ratz.), Coeloides scolyticida (Wesm.) (Hym., Braconidae) and Entedon leucogramma (Ratz.) (Hym., Eulophidae). Ecphylus silesiacus and D. protuberans are the most numerous species. The nectar of mustard (Sinapis alba L., Brassicaceae) flowers, sweet basil (Stachys recta L., Lamiaceae) flowers and of wild carrot (Daucus carota L., Umbelliferae), has an important effect on the number of parasites and on the parasitism of the elm bark beetles. Wild carrot is the most attractive plant to the parasites for additional nutrition, especially for D. protuberans. Mustard and sweet basil flowers are suitable for additional nutrition of E. silesiacus imagos. On meadow flowers growing spontaneously in forest clearings, the lowest number of parasite imagos was collected by an entomological catcher, and the lowest percentage of parasitized larvae and eggs of the elm bark beetle was recorded in elm control catch trunks that were not near the cultivated melliferous plants.

Trap Crops and Insectary Plants in the Order Brassicales

“…(Hymenoptera. Braconidae), a parasitoid of elm bark beetles of the genus Scolytus (Coleoptera: Scolytidae) (Manojlovic et al 2001).…”

Selection of flowering plants to enhance the biological control of Tuta absoluta using parasitoids

“…Possibly, its nectar composition is especially suitable to support egg maturation in this insect. The effect of S. alba nectar on parasitoid fitness has not been previously reported in existing literature, although in field surveys, natural parasitism of beetles increased in areas close to margins of this plant species (Manojlovic et al 2000), suggesting that hymenoptera parasitoids may use these flowers as food resources.…”

White Mustard, Sweet Alyssum, and Coriander as Insectary Plants in Agricultural Systems: Impacts on Ecosystem Services and Yield of Crops

“…White mustard flower nectar had a great effect on the average number of parasitoids and parasitism of the Scolytus elm bark beetle, Scolytus scolytus Fabr. (Coleoptera: Curculionidae) [35]. In the catch trunks alongside the areas growing mustard, the numbers of parasitoids were higher (average of 5.53 parasitoids per dm 2 of bark) in the first generation than in the control (average of 2.92 parasitoids per dm 2 of bark).…”