Results 111 to 120 of about 17,728 (250)

Pollinators In Peril: A Systematic Status Review of North American and Hawaiian Native Bees [PDF]

, 2017
While the decline of European honeybees in the United States and beyond has been well publicized in recent years, the more than 4,000 species of native bees in North America and Hawaii have been much less documented. Although these native bees are not as
Kelsey Kopec, Lori Ann Burd
core  

Neonicotinoids target distinct nicotinic acetylcholine receptors and neurons, leading to differential risks to bumblebees [PDF]

, 2016
This research was funded jointly by BBSRC, DEFRA, NERC, the Scottish Government and The Wellcome Trust, under the Insect Pollinators Initiative (UK) grant BB/1000313/1(CNC).There is growing concern over the risk to bee populations from neonicotinoid ...
A David, AJ Vanbergen, BJ Henderson, BK Klatt, C Botías, C Moffat, C Sandrock, C Sandrock, CH Krupke, DA Stanley, DA Stanley, E Pilling, G Rondeau, GA Wright, GC Cutler, GR Williams, H Feltham, H Kayser, H Thompson, H Wellmann, HC Godfray, HM Thompson, JC Biesmeijer, LA Brown, M Heisenberg, M Henry, M Henry, M Rundlöf, M Tomizawa, M Tomizawa, MA Costa, MEM Benwell, MJ Palmer, MP Garratt, MR Picciotto, P Deglise, P Wiesner, PP Hoppe, PR Whitehorn, PR Whitehorn, R Bommarco, R Nauen, RA Oliveira, RJ Gill, S Pons, SC Kessler, SH Thany, SM Williamson, SM Williamson, T Blacquière, TH Oliver, TL Swenson   +51 more
core   +2 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

Longevity of neonicotinoid seed treatments in cotton seedlings under various deficit irrigation levels

Scientific Reports
Neonicotinoids are one of the most widely used classes of insecticides in agriculture. They are systemic insecticides mainly used as seed treatments to manage sucking insect pests in a wide range of field crops.
Aqeela Sehrish, Suhas Vyavhare, Megha Parajulee, Cade Coldren, Haydee Laza, Catherine Simpson   +5 more
doaj   +1 more source

Widespread contamination of wildflower and bee-collected pollen with complex mixtures of neonicotinoids and fungicides commonly applied to crops [PDF]

, 2016
There is considerable and ongoing debate as to the harm inflicted on bees by exposure to agricultural pesticides. In part, the lack of consensus reflects a shortage of information on field-realistic levels of exposure. Here, we quantify concentrations of
Artz, Beekman, Bingham, Bonmatin, Botías, Carreck, Cresswell, Cresswell, David, Demske, du Rand, Dussaubat, Fairbrother, Goulson, Goulson, Goulson, Gupta, Heinrich, Human, Iwasa, Johnson, Johnson, Khan, Kirk, Knight, Lambert, Moore, Mullin, Mullin, Osborne, Rundlöf, Sanchez-Bayo, Sawyer, Schmuck, Suchail, Thompson, Whitehorn, Wood, Yoder, Yoder, Zhu   +40 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

Efficacy of Selected Commercial Bio‐Products in Disrupting Symbiont Acquisition and Survival of Halyomorpha halys (Hemiptera: Pentatomidae)

Entomologia Experimentalis et Applicata, EarlyView.
Targeting the symbiont Candidatus Pantoea carbekii offers a novel way to manage the invasive brown marmorated stink bug (Halyomorpha halys). Among the three commercial bio‐products tested, Dentamet significantly reduced symbiont acquisition and caused up to 75% nymphal mortality in laboratory conditions, which was confirmed by quantitative Real‐Time ...
Celal Tuncer, Abdullah Okan Seçer, I. Oguz Ozdemir, Göksel Özer, Mehtap Alkan, Matteo Masperro, Tommaso De Gregorio   +6 more
wiley   +1 more source

Short- and long-term effects of neonicotinoid application in rice fields, on the mortality and colony collapse of honeybees (Apis mellifera)

Journal of Apicultural Science, 2013
Declines in honeybee (Apis mellifera ) colonies have elicited great concern worldwide. Recently, many Japanese beekeepers have implied that midsummer use of a new insecticide, neonicotinoid, in rice fields, is causing widespread mortality of neighboring ...
Matsumoto Takashi
doaj   +1 more source