Aphid species, their parasitoids and predators on vegetables (bean, cucumber, eggplant, melon, okra, pepper, pumpkin, tomato watermelon) grown in Erzincan province, Turkey were determined. Surveys carried out at weekly intervals from the seedling period until end of harvest Central Üzümlü districts province 2014-2016. 30-40 plants randomly selected surveys all parts investigated with a magnifie...

Field surveys of soybean aphid, Aphis glycines Matsumura, and its natural enemies, as well as natural enemy exclosure experiments, were conducted during 2003 and 2004 in soybean fields near Langfang, China. In 2003, aphid density increased six-fold during 12 d in July from 66+/-12 per 10 plants to a seasonal peak of 401+/-79 per 10 plants. Aphid density remained high for another 10 d and declin...

In 2013, the sugarcane aphid, Melanaphis sacchari (Zehntner) (Hemiptera: Aphididae), a new invasive pest of sorghum species in North America, was confirmed on sorghum in 4 states and 38 counties in the United States. In 2015, the aphid was reported on sorghum in 17 states and over 400 counties as well as all sorghum-producing regions in Mexico. Ability to overwinter on living annual and perenni...

Plant genotypes are known to affect performance of insect herbivores and the community structure of both herbivores and higher trophic levels. Still, only a limited number of studies demonstrate differences in the performance of predators and parasitoids because of plant genotypic effects and most of these focus on gall formers. We designed a greenhouse experiment to investigate the effects of ...

Biological control is a very safe and effective method for the management of pests. In this study, Coccinella undecimpunctata (Reiche) adults were used in Aphid gossypii population. The total mean reduction percentage A. individuals recorded 67.8, 74.7 and   85.26 % at three different levels release treatment 1, 3 5 adult predators/plants respectively. Also, results showed that releasing C. und...

Generalist predators in terrestrial arthropod communities have traditionally been viewed as predators whose dynamics are less tightly coupled to any particular prey species, but whose ecological roles are in other respects analogous to those of specialist predators. Biological-control theory for predator–prey interactions has been based upon a model of communities composed of three discrete tro...

Biological control by natural enemies is a valuable ecosystem service. The predator community in crop field combination of predators dwelling the and those moving into it from surrounding landscape. former mainly affected management, latter more composition Yet, separate combined effects local landscape management on pest suppression have seldom been investigated. We set-up mesocosms within an ...