Results 81 to 90 of about 2,821 (237)
BIOLOGY OF APHIDIUS RHOPALOSIPHI, A PARASITOID OF CEREAL APHIDS
Entomologia Experimentalis et Applicata, 1983 Aphidius rhopalosiphi produced 212 offspring on average but in one case 509 deposited eggs were found. Superparasitization occurred but the frequency distribution of parasitoid larvae in aphids differed significantly from random, indicating a certain degree of host discrimination. Average life span of adults was 13.1 days and sex ratio was 1: 1.
Shirota, Y. +3 more
openaire +2 more sources
Landscape and farm management influence generalist predators [PDF]
, 2002 Chemical pest control is currently the dominant form of pest management against insect pests in agroecosystems, but has negative side effects. Biological control by specialist predators has been successful in greenhouses, but has not been successfully ...
Östman, Örjan
core
Assessing the host plants of the invasive apricot aphid, Myzus mumecola (Hemiptera: Aphididae)
Agricultural and Forest Entomology, EarlyView.We investigated the host plants of the invasive apricot aphid Myzus mumecola (Hemiptera: Aphididae), an emerging pest species in Europe, by combining molecular and ecological approaches. The winter host plant was confirmed as apricot by both methods.
Marta Chignola +2 more
wiley +1 more source
Agricultural and Forest Entomology, EarlyView.We compared soybean plants from untreated and treated seeds across 4 sites and 3 years in Maryland. Neonicotinoid seed treatments (NST) provided little reduction in insect stippling damage and no reduction in chewing damage. NST did not result in increased plant biomass or bean yield. Abstract The use of neonicotinoid insecticides in seed treatments in
Kelsey J. McGurrin +4 more
wiley +1 more source
Frontiers in Physiology, 2015 Wing dimorphism in aphids can be affected by multiple cues, including both biotic (nutrition, crowding, interspecific interactions, the presence of natural enemies, maternal and transgenerational effects, and alarm pheromone) and abiotic factors ...
Fangmei eZhang +5 more
doaj +1 more source
Divergent Switchgrass Cultivars Modify Cereal Aphid Transcriptomes [PDF]
Journal of Economic Entomology, 2019 Abstract Schizaphis graminum Rondani (Hemiptera: Aphididae) and Sipha flava Forbes (Hemiptera: Aphididae) are two common pests of bioenergy grasses. Despite the fact that they are both considered generalists, they differ in their ability to colonize Panicum virgatum cultivars. For example, S. flava colonizes both P. virgatum cv.
Koch, Kyle G. +6 more
openaire +2 more sources
Ants contribute to raspberry pollination in protected cropping systems
Agricultural and Forest Entomology, EarlyView.Ants visited raspberry flowers more frequently than European honey bees (Apis mellifera), Australian stingless bees (Tetragonula carbonaria) and flies, many transporting raspberry pollen on their bodies, indicating potential pollination capacity. Ants were active flower visitors at most times of the day and may extend the daily pollination window and ...
Pia Malm +6 more
wiley +1 more source
Entomologia Experimentalis et Applicata, EarlyView.Using DNA metabarcoding, this study investigates pollen transported by syrphids (Syrphidae) in the Dolomiti Bellunesi National Park and agricultural sites in Northern Italy. The analysis reveals a high diversity of visited plant taxa, including previously undocumented plant–pollinator interactions.
Serena Magagnoli +6 more
wiley +1 more source
European Journal of Entomology, 2000 The potential of the parasitoid Aphidius rhopalosiphi for controlling cereal aphids was tested in 16 m2 field cage experiments in 1998 and 1999. In the first year, aphids and parasitoids were released in cages containing naturally occurring populations ...
Amandine LEVIE +2 more
doaj +1 more source
Entomologia Experimentalis et Applicata, EarlyView.Predation methods vary widely in their ability to quantify biological control. Estimating predation rates (the number of prey killed per predator per time unit) is crucial. Combining predation rates with predator abundance yields real‐time field estimates of pests consumed.
Yann Tricault +4 more
wiley +1 more source