(Oilseed Rape)?

Total Page:16

File Type:pdf, Size:1020Kb

(Oilseed Rape)? From: Pywell, Richard F. Sent: 19 June 2013 11:50 To: @syngenta.com; @syngenta.com Cc: ; Bullock, James M. Subject: RE: Landscape study and bee health - CEH comments and costs Dear , Below are some comments on the proposed NNI landscape-scale study and an indication of our costs. 1. Overall impression A very timely study with a strong scientific basis. We agree this should be undertaken by five independent research organisations across Europe as this adds power to the study. CEH would be very keen to be involved in this. A minor comment on the presentation. Would be best to make the project outcomes (slide 2) more objective, i.e. don’t say ‘Demonstrate NNIs have no impacts on bees…’ say something like ‘Measure/quantify the effects of NNIs on wild bees and honeybees in real farming situations etc…’ 2. Project management One of the five partner countries needs to take on an overall leadership and co-ordination role to ensure consistency of design and data collection. It would also be worth involving a qualified statistician in the design to add validity. 3. Experimental design You may not need a fully factorial design to answer your research questions (i.e. all combinations of +/- NNI with +/- BMP). The following might suffice and importantly would allow more replication (within each country): a) -NNI with -BMP (current situation with the EU ban) b) +NNI with -BMP (previous situation before the ban) c) +NNI with +BMP (research treatment) Comparison of a) with b) will tell you what effect NNI has Comparison of b) with c) will tell you if you can mitigate the effects of NNI (if there are any) A treatment of –NNI with +BMP is telling you about mitigation without NNIs so might not be needed. We would recommend some limited replication of these treatments within each country (such that each country could report separately if required and to provide a margin for loss of sites etc). Five replicates of the three treatments per country would seem reasonable. (Total 15 sites/plots per country) Each treatment ‘plot’ should comprise a radius of 1 km of arable land containing a high proportion of oilseed rape to which the treatment is applied. This size is a compromise between mean foraging range of pollinators and cost/practical ability to apply good quality BMP to large areas of farmland. There should be separation between treatment plots such that bees cannot fly between them (say 5km). Blocking of the treatment plots should be by region/landscape to take account of landscape structure etc. It is recommended that the structure / composition of each landscape is quantified using earth observation data at the design stage. CEH could undertake this using the approaches developed for the UK oilseed rape study. 4. Response variables (standard measures across countries) Pollinators – aim to cover response of all major pollinator groups: Honeybee colony health/productivity etc. CEH would need to go into partnership with FERA in the UK as they are the experts in this. Bombus terrestris commercially produced colonies (large number per site as response is variable) – productivity, reproductives etc Osmia rufa commercially produced / or country-specific solitary bees e.g. consider using Andreana sp. For the UK currently cultured by ? Secondary measures – abundance counts, traps nests for solitary bees etc 5. Practical issues Ironically we think the European ban on NNIs makes this project more feasible because we are asking selected farmers to use NNI which will benefit their yield (as opposed to the pre-Ban situation where we would ask some farmers to not use NNI at a major cost to their yield). Syngenta should consider supplying all the seed to each farmer as this will ensure a consistent variety of OSR is grown in each country. It will also encourage the no NNI farmers to join the project. BMP should be a similar concept for each country but may need to be tweaked. Operation Pollinator is a good starting point. Syngenta should consider supplying the seed for this. It is important to ensure all the BMP measures (either habitat or honeybee husbandry) are done to a consistently high standard. This would mean advice and visits to the participating farms and should be costed in. In the UK we would use Wildlife Farming Company to do this as a subcontractor. 6. Costs If CEH were to take on the lead for this project it would require a senior scientist full time (in addition to the time of the field teams, CEH statistician, FERA subcontract, WFC subcontract etc). A ball park estimate for this would be in the region of total for the 3 years. This is a very exciting project and I would be happy to discuss further with you both Best wishes Richard From: @syngenta.com [mailto: @syngenta.com] Sent: 17 June 2013 15:17 To: Pywell, Richard F.; @syngenta.com Subject: Fw: Landscape study and bee health 5.pptx Fyi From: To: Sent: Mon Jun 17 12:58:46 2013 Subject: Landscape study and bee health 5.pptx , Here are a few thoughts, mainly to confirm alignment with your points. We are planning to have a combination of a scientific study with a wider demonstration initiative. This provides a platform to interact with national institutes and supports communication of scientific data to a wider (non- scientific) community, in a credible way. While the statistical robustness is critical for the design of the study and the acceptability of data, this doesn’t imply a regulatory study. Having on board some local institutes should support a direct dialogue with the Commission and EFSA and a blessing on the methodology. We are planning just one single crop, as this would be a great simplification. We may need to check this with the local institutes. Also, other companies will be made aware of the project and have the possibility to join, if interested. CRO capacity, and costs are the real issues. We are waiting for news from our procurement that is currently understanding the availability of few CROs for the demonstration part. I will continue to keep you updated and ask your advice. Best regards, Syngenta UK Limited, Registered in England No 00849037 Registered Office : CPC 4, Capital Park, Fulbourn, Cambridge, CB21 5XE, United Kingdom This message may contain confidential information. If you are not the designated recipient, please notify the sender immediately, and delete the original and any copies. Any use of the message by you is prohibited. From: @syngenta.com Sent: 19 June 2013 12:13 To: Pywell, Richard F.; @syngenta.com Cc: Bullock, James M. Subject: Re: Landscape study and bee health - CEH comments and costs Dear Richard, Thank you for this comprehensive answer. I have a review with out top management tonight. I expect to be able to come back to you soon, with some comments. Best regards, From: Pywell, Richard F. <[email protected]> To: Cc: @ceh.ac.uk>; Bullock, James M. <[email protected]> Sent: Wed Jun 19 12:50:10 2013 Subject: RE: Landscape study and bee health - CEH comments and costs Dear Below are some comments on the proposed NNI landscape-scale study and an indication of our costs. 1. Overall impression A very timely study with a strong scientific basis. We agree this should be undertaken by five independent research organisations across Europe as this adds power to the study. CEH would be very keen to be involved in this. A minor comment on the presentation. Would be best to make the project outcomes (slide 2) more objective, i.e. don’t say ‘Demonstrate NNIs have no impacts on bees…’ say something like ‘Measure/quantify the effects of NNIs on wild bees and honeybees in real farming situations etc…’ 2. Project management One of the five partner countries needs to take on an overall leadership and co-ordination role to ensure consistency of design and data collection. It would also be worth involving a qualified statistician in the design to add validity. 3. Experimental design You may not need a fully factorial design to answer your research questions (i.e. all combinations of +/- NNI with +/- BMP). The following might suffice and importantly would allow more replication (within each country): a) -NNI with -BMP (current situation with the EU ban) b) +NNI with -BMP (previous situation before the ban) c) +NNI with +BMP (research treatment) Comparison of a) with b) will tell you what effect NNI has Comparison of b) with c) will tell you if you can mitigate the effects of NNI (if there are any) A treatment of –NNI with +BMP is telling you about mitigation without NNIs so might not be needed. We would recommend some limited replication of these treatments within each country (such that each country could report separately if required and to provide a margin for loss of sites etc). Five replicates of the three treatments per country would seem reasonable. (Total 15 sites/plots per country) Each treatment ‘plot’ should comprise a radius of 1 km of arable land containing a high proportion of oilseed rape to which the treatment is applied. This size is a compromise between mean foraging range of pollinators and cost/practical ability to apply good quality BMP to large areas of farmland. There should be separation between treatment plots such that bees cannot fly between them (say 5km). Blocking of the treatment plots should be by region/landscape to take account of landscape structure etc. It is recommended that the structure / composition of each landscape is quantified using earth observation data at the design stage. CEH could undertake this using the approaches developed for the UK oilseed rape study.
Recommended publications
  • Effects of Ω-ACTX-Hv1a/GNA, a Novel Protein Biopesticide Targeting Voltage-Gated Calcium Ion Channels, on Target and Non-Target Arthropod Species
    Effects of ω-ACTX-Hv1a/GNA, a novel protein biopesticide targeting voltage-gated calcium ion channels, on target and non-target arthropod species Erich Yukio Tempel Nakasu Thesis submitted for the degree of Doctor of Philosophy (PhD) Faculty of Science, Agriculture and Engineering – School of Biology July/2014 Abstract An increasing human population is met with the challenge of feeding over 10 billion people by 2050. Nowadays, over 20% of crop production is lost to insect pests. Chemical control agents, in general, present broad-spectrum activity, killing both pests and beneficial organisms that would contribute to production (i.e. pollinators and natural enemies). Previously, the insecticidal voltage-gated calcium channel blocker peptide -ACTX-Hv1a (Hv1a) was linked to the ‘carrier’ molecule snowdrop lectin (GNA). The resulting fusion protein, Hv1a/GNA, is highly toxic towards lepidopteran and coleopteran pests, presenting potential for use as a biopesticide. Here, the fusion protein was shown to also be toxic to the hemipteran pests Sitobion avenae and Myzus persicae, via artificial diet and when expressed in transgenic plants. However, its effects on non-target arthropods have not been previously evaluated. Therefore, toxicity of Hv1a/GNA was tested against two beneficial insects, the parasitoid wasp Eulophus pennicornis via its host, Lacanobia oleracea, and the honeybee Apis mellifera. The fusion protein did not present any significant tri- trophic negative effects on E. pennicornis, even when injected into host larvae. Honeybee survival was slightly affected when fed on high doses of fusion protein representing a ‘worst-case scenario’, but lead to no detectable effects when dosed with field-relevant levels.
    [Show full text]
  • Proquest Dissertations
    INFORMATION TO USERS This manuscript has been reproduced from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of computer printer. The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction. In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion. Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at tfie upper left-hand comer and continuing from left to right in equal sections with small overlaps. Photographs included in the original manuscript have been reproduced xerographically in this copy. Higher quality 6” x 9” black and white photographic prints are available for any photographs or illustrations appearing in this copy for an additional charge. Contact UMI directly to order. Bell & Howell Information and Learning 300 North Zeeb Road, Ann Artx)r, Ml 48106-1346 USA UMI 800-521-0600 Towards a Molecular Analysis of Associative Learning in the Honey Bee, Apis mellifera, via Massed Conditioning and Genetic Transformation DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in the Graduate School of The Ohio State University By Kellie Oline Robinson, 8.S.
    [Show full text]
  • Insects and Insecticides
    House of Commons Environmental Audit Committee Insects and Insecticides Written evidence Only those submissions written specifically for the Committee for the inquiry into Insects and Insecticides and accepted as written evidence are included List of written evidence Page 1 Professor Dave Goulson, Stirling University 4 2 Brighton and Lewes Beekeepers 6 3 William Summers 7 4 Soil Association 8 5 Rosemary Mason and Palle Uhd Jepsen 19 6 Dr C Connolly, University of Dundee 51 7 Bee the Change 54 8 Dr Robert Paxton, Queens University, Belfast 56 9 Friends of the Earth 60 10 Bayer CropScience Ltd. 67 11 The Co-operative 71 12 Sussex Beekeepers Association 75 13 Scottish Wildlife Trusts 78 14 Bedfordshire Beekeepers Association 83 15 Pesticide Action Network UK 86 16 John Hoar 98 17 Dr Nigel Raine, University of London 103 18 National Farmers Union (NFU) 105 19 The Wildlife Trusts 113 20 Crop Protection Association 119 21 Buglife 124 22 Dr James Cresswell, University of Exeter 141 23 Syngenta 146 24 Research Councils UK 158 25 Amanda Williams 166 26 Dr Lynn Dicks, Cambridge University 177 27 RSPB 184 28 Georgina Downs, UK Pesticides Campaign 191 29 Professor Graham Stone, Edinburgh University 245 30 Defra 249 31 Advisory Committee on Pesticides 292 32 Paul Matthews 325 33 John Hoar (further submission) 332 34 Professor Simon Potts 333 35 Bayer CropScience (further submission) 337 36 Nonmenclature Committee of the International Union of Pharmacologists 339 37 Orchid Apiaries 340 38 Lord de Mauley, Parliamentary Under Secretary of State, Department
    [Show full text]
  • Neonicotinoid Pesticides and Honey Bees
    Neonicotinoid Pesticides and Honey Bees WASHINGTON STATE UNIVERSITY EXTENSION FACT SHEET • FS122E Introduction noid class of insecticides has become important for use in agriculture and home landscapes. There are currently more Recently, concern has been raised regarding the impact than 465 products containing neonicotinoids (often called of a common class of pesticide known as neonicotinoids “neonics”) approved for use in the state of Washington. (pronounced neo-nih-CAH-tin-oids) on honey bees, (Apis Approximately 150 are approved for use in the home or mellifera, Figure 1) and native bee pollinators. Many people garden. feel the decline in honey bee populations known as Colony Collapse Disorder (CCD) is directly linked to the increased Neonicotinoids are relatively safe for use around people, use of these products. animals, and the environment (Mohamed 2009; Tomizawa 2004). Because of their effectiveness and relative safety, In this paper, we will discuss the use of neonicotinoids as neonicotinoids have become one of the fastest growing well as declines in honey bee populations. Finally, we will classes of pesticides used in agriculture as well as in home review what is currently known about the relationship and garden products (Jeschke and Nauen, 2008). between neonicotinoid pesticides and honey bees. One of the main advantages for using neonicotinoid prod- ucts is that they move systemically within the plant, thus reducing the direct pesticide exposure to both the appli- cator and the environment. Ironically, it is this systemic action that makes the neonicotinoids a problem for honey bees and other pollinators: because a neonicotinoid pesti- cide spreads within the entire plant, it can also be found in the nectar and pollen of the flowers.
    [Show full text]
  • Board of Pesticides Control Commissioner 28 State House Station Henry S
    STATE OF MAINE MAINE DEPARTMENT OF AGRICULTURE, CONSERVATION AND FORESTRY WALTER E. WHITCOMB BOARD OF PESTICIDES CONTROL COMMISSIONER 28 STATE HOUSE STATION HENRY S. JENNINGS DIRECTOR PAUL R. LEPAGE AUGUSTA, MAINE 04333-0028 GOVERNOR BOARD OF PESTICIDES CONTROL June 27, 2014 Cafeteria, Madison Area Memorial High School, 486 Main Street, Madison, Maine AGENDA 10:00 AM 1. Introductions of Board and Staff 2. Minutes of the March 28 and May 16, 2014, Board Meetings Presentation By: Henry Jennings Director Action Needed: Amend and/or Approve 3. Public Forum (limited to one hour) At this time, the Board invites anyone interested to address its members with questions or concerns about any pesticide-related issues. Presentation By: Henry Jennings Director Action Needed: None required 4. Interpretation of the Term “food production” in the Context of the Agricultural Basic Pesticide Applicator License Questions have arisen about the term “food production” in the statute that requires certification for a “private applicator of general use pesticides for food production” (Title 22, Sec. 1471-D [2-D]). The staff is asking the Board to interpret the meaning of the term in this context. Presentation By: Gary Fish Manager of Pesticide Programs Action Needed: Provide guidance to the staff on how to interpret the statute 5. Overview of Board of Pesticides Control Posting/Notification Requirements At the March 28, 2014, meeting, the subject of Board of Pesticides Control sign requirements came up as the Board reviewed a complaint filed by Donna Herczeg. There was Board sentiment to review the BPC sign requirements at a future meeting and determine whether they are serving the intended purpose.
    [Show full text]
  • 14 European Symposium for Insect Taste and Olfaction (ESITO
    14th European Symposium for Insect Taste and Olfaction (ESITO) ABSTRACTS September 20-25, 2015 Villasimius (Cagliari – Italy) www.ice.mpg.de/esito Agustina Falibene, Flavio Roces, Wolfgang Rössler Department of Behavioral Physiology and Sociobiology, Biozentrum, University of Würzburg, Germany, [email protected] Odor learning in ants: synaptic plasticity associated with long-term avoidance memory formation Long-term behavioral changes related to learning and experience have been shown to be associated with structural remodeling in the brain. Leaf-cutting ants learn to avoid previously preferred plants after those are experienced to be harmful for their symbiotic fungus, a process that involves long-term olfactory memory. We studied the dynamics of brain microarchitectural changes after long-term olfactory memory formation following avoidance learning in Acromyrmex ambiguus. Quantification of synaptic complexes (microglomeruli, MG) in olfactory regions of the mushroom bodies (MB) at different times after learning revealed a transient change in MG densities. Two days after learning, lip MG density was higher than before learning. At days 4 and 15 after learning – when ants still showed plant avoidance – MG densities had decreased to the initial state. Changes were observed in the lip but not in the visual collar in which MG densities remained unaffected. Furthermore, enriched experience such as the simultaneous collection of several, instead of one, non-harmful plant species resulted in a decrease in MG densities (pruning). The results indicate that learning and sensory experience affect the synaptic architecture of the MB calyces via different processes. While sensory experience leads to MG pruning in the MB olfactory lip, long-term memory formation appears to involve growth of new MG followed by the elimination of others.
    [Show full text]
  • Miscellaneous Pesticides Articles June 2014
    Maine Board of Pesticides Control Miscellaneous Pesticides Articles June 2014 (identified by Google alerts or submitted by individuals) Pesticide illness cases show jump this spring in Washington | Walla Walla... http://union-bulletin.com/news/2014/may/13/pesticide-illness-cases-show... By Kate Prengaman of the Yakima Herald-Reupblic - As of Tuesday, May 13, 2014 The state Department of Heath reports a spike in pesticide-related illnesses, with 60 people becoming ill so far this spring. In total, 15 pesticide exposure events have been reported to the Health Department in the past two months, which is as many as the agency normally sees in a year, spokeswoman Kelly Stowe said. All of the recent cases have occurred in Eastern Washington in counties with lots of orchards. Most of the exposures are believed to be the result of pesticide drift — when the chemical spray drifts away due to wind or improper application. Stowe said the two cases reported in Yakima County both affected one person. In one case, an employee was exposed and had to be taken to the emergency room for treatment. In another, a bystander was exposed, but declined medical attention. The state Department of Agriculture is investigating 13 drift complaints as of Monday, including nine that affected two or more people, said spokesman Hector Castro. The highest number of cases are in Grant and Chelan counties, he added. “To see this many pesticide drift cases this early in the season is a concern,” Castro said. The Agriculture Department is only investigating one case in Yakima, in which a fungicide drifted from an orchard onto a neighboring residence.
    [Show full text]
  • Pollinators and Pesticides
    House of Commons Environmental Audit Committee Pollinators and Pesticides Seventh Report of Session 2012–13 Volume II Additional written evidence Ordered by the House of Commons to be published 25 March 2013 Published on 5 April 2013 by authority of the House of Commons London: The Stationery Office Limited Environmental Audit Committee The Environmental Audit Committee is appointed by the House of Commons to consider to what extent the policies and programmes of government departments and non-departmental public bodies contribute to environmental protection and sustainable development; to audit their performance against such targets as may be set for them by Her Majesty’s Ministers; and to report thereon to the House. Current membership Joan Walley MP (Labour, Stoke-on-Trent North) (Chair) Peter Aldous MP (Conservative, Waveney) Richard Benyon MP (Conservative, Newbury) [ex-officio] Neil Carmichael MP (Conservative, Stroud) Martin Caton MP (Labour, Gower) Katy Clark MP (Labour, North Ayrshire and Arran) Chris Evans MP (Labour/Co-operative, Islwyn) Zac Goldsmith MP (Conservative, Richmond Park) Mark Lazarowicz MP (Labour/Co-operative, Edinburgh North and Leith) Caroline Lucas MP (Green, Brighton Pavilion) Caroline Nokes MP (Conservative, Romsey and Southampton North) Dr Matthew Offord MP (Conservative, Hendon) Mr Mark Spencer MP (Conservative, Sherwood) Paul Uppal MP (Conservative, Wolverhampton South West) Dr Alan Whitehead MP (Labour, Southampton, Test) Simon Wright MP (Liberal Democrat, Norwich South) The following members were also members of the committee during the parliament: Ian Murray MP (Labour, Edinburgh South) Sheryll Murray MP (Conservative, South East Cornwall) Powers The constitution and powers are set out in House of Commons Standing Orders, principally in SO No 152A.
    [Show full text]
  • BH Smith Curriculum Vitae
    Brian Harvey Smith School of Life Sciences P.O. Box 874501 Citizenship: USA Arizona State University telephone: 480-727-0655 Tempe, AZ 85287-450 [email protected] sols.asu.edu/faculty/bsmith.php Education 1978 Juniata College, BS Biology 1985 University of Kansas, PhD Entomology Postdoctoral Training 1988-90 ARL Division of Neurobiology, University of Arizona, Tucson "Neuroethological Studies of Memory In a Model System" with Dr. John G. Hildebrand 1987 Department of Entomology, University of California at Berkeley, "Olfactory conditioning in Honey Bees" with Dr. Wayne M. Getz 1986 Institute for Neurobiology of the Free University of Berlin, West Germany, "Neurophysiological and behavioral analysis of olfactory learning in Apis mellifera." with Dr. Randolf Menzel 1985 Institute for Developmental Biology, Tübingen, West Germany, "Role of learning and pheromonal communication in primitively social bees." with Dr. Wolf Engels Professional Appointments 2011 Director, School of Life Sciences, Arizona State University 2009 Faculty Leader, Organismal, Integrative and Systems Biology in the School of Life Sciences at Arizona State University 2008 Director, Interdisciplinary Graduate Program in Neuroscience, Arizona State University 2007 Research Professor, Barrow Neurological Institute, Phoenix, Arizona 2005 Professor, School of Life Sciences, Arizona State University 2002 Professor, Mathematical Biosciences Institute, Ohio State University 2001 Adjunct Professor, ARL Division of Neurobiology, University of Arizona 2001 Professor, Department
    [Show full text]
  • Honeybees Fail to Discriminate Floral Scents in a Complex Learning Task After Consuming a Neonicotinoid Pesticide
    University of Texas Rio Grande Valley ScholarWorks @ UTRGV Biology Faculty Publications and Presentations College of Sciences 3-2020 Honeybees fail to discriminate floral scents in a complex learning task after consuming a neonicotinoid pesticide Julie A. Mustard The University of Texas Rio Grande Valley Annie Gott Newcastle University Jennifer Scott Nancy L. Chavarria The University of Texas Rio Grande Valley Geraldine A. Wright University of Oxford Follow this and additional works at: https://scholarworks.utrgv.edu/bio_fac Part of the Animal Sciences Commons, Biochemistry, Biophysics, and Structural Biology Commons, and the Biology Commons Recommended Citation Mustard, J. A., Gott, A., Scott, J., Chavarria, N. L., & Wright, G. A. (2020). Honeybees fail to discriminate floral scents in a complex learning task after consuming a neonicotinoid pesticide. Journal of Experimental Biology, 223(5). https://doi.org/10.1242/jeb.217174 This Article is brought to you for free and open access by the College of Sciences at ScholarWorks @ UTRGV. It has been accepted for inclusion in Biology Faculty Publications and Presentations by an authorized administrator of ScholarWorks @ UTRGV. For more information, please contact [email protected], [email protected]. © 2020. Published by The Company of Biologists Ltd | Journal of Experimental Biology (2020) 223, jeb217174. doi:10.1242/jeb.217174 RESEARCH ARTICLE Honeybees fail to discriminate floral scents in a complex learning task after consuming a neonicotinoid pesticide Julie A. Mustard1, Annie Gott2, Jennifer Scott2,3, Nancy L. Chavarria1 and Geraldine A. Wright2,3,* ABSTRACT 2015). While the main intention of the application of these Neonicotinoids are pesticides used to protect crops but with known substances to plants is to target pests, many of the compounds ‘ ’ secondary influences at sublethal doses on bees.
    [Show full text]
  • Honeybees Fail to Discriminate Floral Scents in a Complex Learning Task After Consuming a Neonicotinoid Pesticide Julie A
    © 2020. Published by The Company of Biologists Ltd | Journal of Experimental Biology (2020) 223, jeb217174. doi:10.1242/jeb.217174 RESEARCH ARTICLE Honeybees fail to discriminate floral scents in a complex learning task after consuming a neonicotinoid pesticide Julie A. Mustard1, Annie Gott2, Jennifer Scott2,3, Nancy L. Chavarria1 and Geraldine A. Wright2,3,* ABSTRACT 2015). While the main intention of the application of these Neonicotinoids are pesticides used to protect crops but with known substances to plants is to target pests, many of the compounds ‘ ’ secondary influences at sublethal doses on bees. Honeybees use affect non-target organisms such as pollinators like bees. their sense of smell to identify the queen and nestmates, to signal Bees encounter pesticides when they contact flower parts to drink danger and to distinguish flowers during foraging. Few behavioural nectar and collect floral pollen from flowering crops such as fruit, studies to date have examined how neonicotinoid pesticides affect nut and seed crops. Consuming nectar and pollen exposes them to the ability of bees to distinguish odours. Here, we used a differential sublethal concentrations of these compounds that can accumulate in learning task to test how neonicotinoid exposure affects learning, stored foods or in body tissues (Moffat et al., 2016; Osterman et al., memory and olfactory perception in foraging-age honeybees. Bees 2019) and affect behaviours such as foraging (Henry et al., 2012; fed with thiamethoxam could not perform differential learning and Muth and Leonard, 2019; Schneider et al., 2012; Yang et al., 2008), could not distinguish odours during short- and long-term memory navigation (Fischer et al., 2014) and dance (Eiri and Nieh, 2016).
    [Show full text]
  • Bna2017 Talk Abstracts Session 2Tuesday 11Th April
    BNA2017 TALK ABSTRACTS SESSION 2TUESDAY 11TH APRIL Symposium 10 – Microglia, neuroinflammation and psychiatric disease: biomarkers and therapeutic potential Theme: Neuronal, glial and cellular mechanisms 10.01. The functions of microglia and their diverse activation states Professor Hugh Perry - University of Southampton, UK The microglia are the resident macrophages of the brain, they are derived from the yolk sac and populate the embryonic brain. They are maintained by local division with little replacement or recruitment from circulating monocytes. Microglia in the adult brain adopt a distinct morphology and phenotype that sets them apart from other tissue macrophages. A growing number of functions in the developing and adult brain have been attributed to microglia including the removal of apoptotic cells, surveillance and removal of supernumerary synapses – so called synaptic stripping- and many others. Apart from these homeostatic functions microglia rapidly respond to perturbations of their local environment and become activated. These activated microglia alter their morphology and phenotype and have often been described in terms of an M1 or M2 phenotype, which is unlikely to reflect the phenotype or potential of these cells in vivo. The microglia are highly plastic cells, and exist in diverse states with the potential to rapidly change in response to other stimuli arising both from within and outside the brain. The relevance of these findings for psychiatric disease will be discussed. Contact email address: [email protected] 10.02. Therapeutic modulation of microglia – opportunities and challenges Dr Irene Knuesel - Roche, Switzerland As the resident immune cells of the central nervous system, microglia play key roles in CNS maintenance, including refinement of synaptic networks, phagocytosis of cellular debris, and secretion of neurotrophic factors.
    [Show full text]