Results 81 to 90 of about 127,737 (232)

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., Scully, Erin D., Palmer, Nathan A., Geib, Scott M., Sarath, Gautam, Heng-Moss, Tiffany, Bradshaw, Jeff D.   +6 more
openaire   +2 more sources

Reconsidering the importance of Metopolophium dirhodum (Walker) (Hemiptera: Aphididae) as a crop pest

Agricultural and Forest Entomology, EarlyView.
Four‐year field monitoring and laboratory studies revealed M. dirhodum occurs regularly in barley with high reproductive potential and extended adult longevity. Populations peaked during vulnerable crop stages, creating optimal conditions for BYDV transmission during critical infection windows. M.
Md Munir Mostafiz, Jack D. C. Perry, Daniel J. Leybourne, Tom W. Pope, Joe M. Roberts, Antoine Pichon, Stephen Byrne, Louise McNamara   +7 more
wiley   +1 more source

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   +1 more source

Bacterial symbionts, Buchnera, and starvation on wing dimorphism in English grain aphid, Sitobion avenae (F.) (Homoptera: Aphididae)

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, Xiangrui eLi, Yunhui eZhang, Brad eCoates, Xuguo eZhou, Dengfa eCheng   +5 more
doaj   +1 more source

Metabarcoding of Pollen Carried by Syrphids Reveals Novel Plant–Pollinator Interactions in a Protected Natural Area and Agricultural Sites

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, Daniele Sommaggio, Claudio Ratti, Riccardo Baroncelli, Andrea Menicucci, Enrico Vettorazzo, Giovanni Burgio   +6 more
wiley   +1 more source

Tachinidae (Diptera) as Floral Visitors and Pollinators in Natural and Managed Systems

Entomologia Experimentalis et Applicata, EarlyView.
We review the roles of bristle flies (Tachinidae) as pollinators in natural and managed systems. We find that most tachinid genera visit flowers and that floral‐adapted mouthparts have evolved repeatedly many times in the family. We review patterns of floral specificity and assess the efficacy of tachinids as pollinators with case studies.
John O. Stireman III, Pierfilippo Cerretti   +1 more
wiley   +1 more source

Release of Aphidius rhopalosiphi (Hymenoptera: Aphidiinae) for cereal aphid control: field cage experiments

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, Pierre DOGOT, Thierry HANCE   +2 more
doaj   +1 more source

A defensive symbiont and a plant virus confer direct and discrete phenotypes to a cereal aphid in a context‐dependent manner

Ecological Entomology, EarlyView.
Different BYDV‐PAV isolates exert contrasting effects on aphid fitness, including reproduction and winged production. Different BYDV‐PAV isolates have contrasting effects on aphid dispersal patterns. Aphid feeding behaviour is modulated by the presence of endosymbionts and plant viruses.
Daniel J. Leybourne, Andrea Ceribelli, Sharon E. Zytynska   +2 more
wiley   +1 more source

Thermal requirements for development and resource partitioning in aphidophagous guilds

European Journal of Entomology, 2005
The duration of the increase, peak and decline in abundance of the immature stages of sycamore and cereal aphids each year is ephemeral. These temporary resources are exploited by a sequence of aphidophagous insect predators. The temporal sequence in the
Anthony F.G. DIXON, Vojtěch JAROŠÍK, Alois HONĚK   +2 more
doaj   +1 more source

Damage effects of cereal aphids in wheat

Netherlands Journal of Plant Pathology, 1981
Laboratory and field studies on aphid damage in wheat are described. Both direct and indirect effects of aphids on the behaviour of the crop were studied. In the laboratory a clear effect of honeydew and yeasts on photosynthesis was found. This effect could not be demonstrated under field conditions, since even at yield loss levels of 700 kg ha−1 the ...
Rabbinge, R., Drees, E.M., van der Graaf, M., Verberne, F.C.M., Wesselo, A.   +4 more
openaire   +3 more sources