Results 101 to 110 of about 13,932 (240)

Comparative chronic toxicity of three neonicotinoids on New Zealand packaged honey bees.

PLoS ONE, 2018
BackgroundThiamethoxam, clothianidin, and imidacloprid are the most commonly used neonicotinoid insecticides on the Canadian prairies. There is widespread contamination of nectar and pollen with neonicotinoids, at concentrations which are sublethal for ...
Sarah C Wood, Ivanna V Kozii, Roman V Koziy, Tasha Epp, Elemir Simko   +4 more
doaj   +1 more source

Russian wheat aphid: a model for genomic plasticity and a challenge to breeders

Insect Science, EarlyView.
Invasive foundress finds suitable habitat and reproduces through pathogenesis. Wingless females produce life offspring quickly, which leads to high population densities. High population densities result in competition, which may induce epigenetic changes and wing development for dispersal.
Astrid Jankielsohn, Vicky L. Tolmay, Marlon‐Schylor Luke le Roux, Lintle Mohase, Mpho S. Mafa, Vittorio F. Nicolis, Eduard Venter, Nicolaas Francois Visser Burger, Anna‐Maria Botha   +8 more
wiley   +1 more source

Degree of insecticide exposure and access to nectar impact survival of Trissolcus japonicus, a hymenopteran parasitoid, in flowering border strips

Agricultural and Forest Entomology, EarlyView.
We applied three thiamethoxam spray treatments to buckwheat border strips: control (no nearby spray), drift (adjacent peach trees directly sprayed) and direct spray (buckwheat and peaches directly sprayed). Drift‐treated buckwheat received about 1.4% the amount of thiamethoxam as direct‐spray buckwheat. This amount has no lethal effects on parasitoids,
Emma O. Waltman, Anne L. Nielsen
wiley   +1 more source

Recent advances in the removal of neonicotinoid insecticides: classical approaches and nanomaterial applications

Discover Chemistry
Neonicotinoids are among the primary insecticides used globally, distinguished by their high efficiency against insects and low toxicity to mammals. They exhibit significant solubility and persistence in soils, making them ideal as systemic insecticides.
Erwin García-Hernández, Rafael Catarino-Centeno, Cristina Cuautli, Hugo Suárez-Hernández   +3 more
doaj   +1 more source

A restatement of recent advances in the natural science evidence base concerning neonicotinoid insecticides and insect pollinators [PDF]

, 2015
A summary is provided of recent advances in the natural science evidence base concerning the effects of neonicotinoid insecticides on insect pollinators in a format (a ‘restatement’) intended to be accessible to informed but not expert policymakers and ...
Blacquiere, Tjeerd, Field, Linda M., Godfray, H. Charles J., Hails, Rosemary S., McLean, Angela R., Potts, Simon G., Raine, Nigel E., Vanbergen, Adam J.   +7 more
core   +3 more sources

The amino terminal domain of the human α7 nicotinic acetylcholine receptor subunit leads to the functional expression of human/insect receptors

British Journal of Pharmacology, EarlyView.
Human α7 receptors have been characterised in terms of pharmacological properties. Insertion of the N‐terminal domain of the human α7 subunit leads to honeybee and cockroach chimeric receptors activated by ACh and inhibited by α‐Bgt. Insertion of the human cys‐loop leads to cockroach chimeric receptors modulated by PNU.
Alison Cartereau, Chloé Veront, Alexandra Cremades, Priscilla Martin, Remi Gojard, Nicolas Galland, Emiliane Taillebois, Dieudonnée Togbé, Jean‐Yves Le Questel, Steeve H. Thany   +9 more
wiley   +1 more source

The neonicotinoid insecticide thiacloprid impacts upon bumblebee colony development under field conditions [PDF]

, 2017
The impacts of pesticides, and in particular of neonicotinoids, on bee health remain much debated. Many studies describing negative effects have been criticised as the experimental protocol did not perfectly simulate real-life field scenarios.
Arthur David, Ciaran Ellis, Dave Goulson, Goulson D., Kirsty J. Park, Laurino D., Penelope Whitehorn   +6 more
core   +3 more sources

Leaf Extracts of Coffea racemosa Inhibit Trypsin Activity and Affect Larval Development in Spodoptera frugiperda and Diatraea saccharalis

Entomologia Experimentalis et Applicata, EarlyView.
Leaf extracts of Coffea racemosa inhibit digestive trypsins and impair the development of two major lepidopteran pests, Spodoptera frugiperda and Diatraea saccharalis. While both species showed significant enzymatic inhibition, biological responses differed markedly. D. saccharalis exhibited high mortality, whereas S.
Nicole de Paula Souza, Diandro Ricardo Barilli, Sandy Souza Fonsêca, Ana Letícia Zero dos Santos   +3 more
wiley   +1 more source

Pesticide reduces bumblebee colony initiation and increases probability of population extinction [PDF]

, 2017
Pollinators are in global decline, and agricultural pesticides are a potential driver of this. Recent studies have suggested that pesticides may significantly impact bumblebee colonies, an important and declining group of pollinators.
Baron, Gemma L., Brown, Mark J.F., Jansen, Vincent A.A., Raine, Nigel   +3 more
core   +1 more source

Bee worries beyond neonicotinoids [PDF]

Current Biology, 2018
Summary As the EU ban on the outdoor use of three neonicotinoids is about to come into force, a study shows a new alternative pesticide has similar sublethal but harmful effects. A good solution to the dilemma of distinguishing between useful insects and pests may not exist, but at least the amounts of pesticides released can be reduced.
openaire   +1 more source