A new chemical compound was tested for its insecticidal activity against several major insect pests. The compound, called "flufenerim", has a core pyrimidine structure and an unknown mode of action and showed potent activity against the sweet potato whitefly Bemisia tabaci (Gennadius), the green peach aphid Myzus persicae (Sulzer), and the African cotton leafworm Spodoptera littoralis (Boisduva...

The green peach aphid, Myzus persicae, is globally distributed and an important pest of many economically valuable food crops, largely due to its ability transmit plant viruses. Almost all aphids, including M. carry the obligate symbiont Buchnera aphidicola, which provides essential amino acids that aphids cannot obtain from phloem plants themselves. Many also harbor facultative (secondary) end...

The combination of a companion plant with cultivated is considered an interesting strategy to reduce pest pressure and, hence, the use pesticides. Although several plants from Alliaceae and Lamiaceae families are known be efficient against aphid pests, only few Geraniaceae family have been studied so far. aim this work was investigate potential effects Geranium macrorrhizum as on colonization s...

The study of environmental stress tolerance in aphids has primarily been at low temperatures. In these cases, and in the rare cases of high temperature tolerance assessments, all exposures had been during a single stress event. In the present study, we examined the physiological consequences of repeated high temperature exposure with recovery periods between these stress events in Myzus persica...

A study was conducted to examine the influence of the hunger level on the prey consumption of Macrolophus pygmaeus Rambur (Hemiptera Miridae) at varying densities of Myzus persicae Sulzer (Hemiptera Aphididae) through laboratory functional response experiments. Newly emerged adult females of the predator were subjected to 24 or 48 h of prey deprivation on pepper plant, as well as to 48 h only o...

Aphids are phloem feeders that cause large damage globally as pest insects. They induce a variety of responses in the host plant, but not much is known about which responses are promoting or inhibiting aphid performance. Here, we investigated whether one of the responses induced in barley by the cereal aphid, bird cherry-oat aphid (Rhopalosiphum padi L.) affects aphid performance in the model p...

Plum pox, an invasive disease recently identified in Pennsylvania stone fruit orchards, is caused by the aphid-transmitted Plum pox virus (genus Potyvirus, family Potyviridae, PPV). To identify potential vectors, we described the aphid species communities and the seasonal dynamics of the dominant aphid species within Pennsylvania peach orchards. Aphids were trapped weekly in 2002 and 2003 from ...

Intercropping of aromatic plants provides an environmentally benign route to reducing pest damage in agroecosystems. However, the effect intercropping on natural enemies, another element which may be vital success integrated management approach, varies different systems. Rosemary, Rosmarinus officinalis L. (Lamiaceae), has been reported repellent many insect species. In this study, impact sweet...

In this study, the development of imidacloprid and acetamiprid resistance in Myzus persicae populations relationship between neonicotinoid esterase enzyme were investigated seven which is collected from greenhouse pepper production areas 2018. order to determine ratios aphid against insecticides, 1 control 6 doses used. Each insecticide dose was used 3 replicates 25 adult female individuals eac...

In most aphid species, facultative parthenogenetic reproduction allows rapid growth and formation of large single-genotype colonies. Upon predator attack, individual aphids emit an alarm pheromone to warn the colony of this danger. (E)-beta-farnesene (EBF) is the predominant constituent of the alarm pheromone in Myzus persicae (green peach aphid) and many other aphid species. Continuous exposur...