Imperial College London

Dr Richard J. Gill

Faculty of Natural SciencesDepartment of Life Sciences (Silwood Park)

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 2215r.gill Website

 
 
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Location

 

N2.13MunroSilwood Park

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Summary

 

Publications

Publication Type
Year
to

15 results found

Gray REJ, Ewers RM, Boyle MJW, Chung AYC, Gill RJet al., 2018, Effect of tropical forest disturbance on the competitive interactions within a diverse ant community, SCIENTIFIC REPORTS, Vol: 8, ISSN: 2045-2322

JOURNAL ARTICLE

Samuelson AE, Gill RJ, Brown MJF, Leadbeater Eet al., 2018, Lower bumblebee colony reproductive success in agricultural compared with urban environments, PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, Vol: 285, ISSN: 0962-8452

JOURNAL ARTICLE

Arce AN, David TI, Randall EL, Rodrigues AR, Colgan TJ, Wurm Y, Gill RJet al., 2017, Impact of controlled neonicotinoid exposure on bumblebees in a realistic field setting, JOURNAL OF APPLIED ECOLOGY, Vol: 54, Pages: 1199-1208, ISSN: 0021-8901

JOURNAL ARTICLE

Bohan DA, Landuyt D, Ma A, Macfadyen S, Martinet V, Massol F, McInerny G, Montoya JM, Mulder C, Pascual U, Pocock MJO, White P, Blanchemanche S, Bonkowski M, Bretagnolle V, Bronmark C, Dicks L, Dumbrell A, Eisenhauer N, Friberg N, Gessner MO, Gill RJ, Gray C, Haughton A, Ibanez S, Jensen J, Jeppesen E, Jokela J, Lacroix G, Lannou C, Lavorel S, Le Galliard J-F, Lescourret F, Liu S, Loeuille N, McLaughlin O, Muggleton S, Penuelas J, Petanidou T, Petit S, Pomati F, Raffaelli D, Rasmussen J, Raybould A, Reboud X, Richard G, Scherber C, Scheu S, Sutherland WJ, Tamaddoni-Nezhad A, ter Braak C, Termansen M, Thompson MSA, Tscharntke T, Vacher C, van der Geest H, Voigt W, Vonk JA, Zhou X, Woodward Get al., 2016, Networking Our Way to Better Ecosystem Service Provision, TRENDS IN ECOLOGY & EVOLUTION, Vol: 31, Pages: 105-115, ISSN: 0169-5347

JOURNAL ARTICLE

Gill RJ, Baldock KCR, Brown MJF, Cresswell JE, Dicks LV, Fountain MT, Garratt MPD, Gough LA, Heard MS, Holland JM, Ollerton J, Stone GN, Tang CQ, Vanbergen AJ, Vogler AP, Woodward G, Arce AN, Boatman ND, Brand-Hardy R, Breeze TD, Green M, Hartfield CM, O'Connor RS, Osborne JL, Phillips J, Sutton PB, Potts SGet al., 2016, Protecting an Ecosystem Service: Approaches to Understanding and Mitigating Threats to Wild Insect Pollinators, ECOSYSTEM SERVICES: FROM BIODIVERSITY TO SOCIETY, PT 2, Vol: 54, Pages: 135-206, ISSN: 0065-2504

JOURNAL ARTICLE

Samuelson EEW, Chen-Wishart ZP, Gill RJ, Leadbeater Eet al., 2016, Effect of acute pesticide exposure on bee spatial working memory using an analogue of the radial-arm maze, SCIENTIFIC REPORTS, Vol: 6, ISSN: 2045-2322

JOURNAL ARTICLE

Smith DB, Bernhardt G, Raine NE, Abel RL, Sykes D, Ahmed F, Pedroso I, Gill RJet al., 2016, Exploring miniature insect brains using micro-CT scanning techniques., Sci Rep, Vol: 6

The capacity to explore soft tissue structures in detail is important in understanding animal physiology and how this determines features such as movement, behaviour and the impact of trauma on regular function. Here we use advances in micro-computed tomography (micro-CT) technology to explore the brain of an important insect pollinator and model organism, the bumblebee (Bombus terrestris). Here we present a method for accurate imaging and exploration of insect brains that keeps brain tissue free from trauma and in its natural stereo-geometry, and showcase our 3D reconstructions and analyses of 19 individual brains at high resolution. Development of this protocol allows relatively rapid and cost effective brain reconstructions, making it an accessible methodology to the wider scientific community. The protocol describes the necessary steps for sample preparation, tissue staining, micro-CT scanning and 3D reconstruction, followed by a method for image analysis using the freeware SPIERS. These image analysis methods describe how to virtually extract key composite structures from the insect brain, and we demonstrate the application and precision of this method by calculating structural volumes and investigating the allometric relationships between bumblebee brain structures.

JOURNAL ARTICLE

Raine NE, Gill RJ, 2015, Ecology: Tasteless pesticides affect bees in the field., Nature, Vol: 521, Pages: 38-40

JOURNAL ARTICLE

Gill RJ, Raine NE, 2014, Chronic impairment of bumblebee natural foraging behaviour induced by sublethal pesticide exposure, FUNCTIONAL ECOLOGY, Vol: 28, Pages: 1459-1471, ISSN: 0269-8463

JOURNAL ARTICLE

Bryden J, Gill RJ, Mitton RAA, Raine NE, Jansen VAAet al., 2013, Chronic sublethal stress causes bee colony failure, ECOLOGY LETTERS, Vol: 16, Pages: 1463-1469, ISSN: 1461-023X

JOURNAL ARTICLE

Gill RJ, Ramos-Rodriguez O, Raine NE, 2012, Combined pesticide exposure severely affects individual- and colony-level traits in bees., Nature, Vol: 491, Pages: 105-108

Reported widespread declines of wild and managed insect pollinators have serious consequences for global ecosystem services and agricultural production. Bees contribute approximately 80% of insect pollination, so it is important to understand and mitigate the causes of current declines in bee populations . Recent studies have implicated the role of pesticides in these declines, as exposure to these chemicals has been associated with changes in bee behaviour and reductions in colony queen production. However, the key link between changes in individual behaviour and the consequent impact at the colony level has not been shown. Social bee colonies depend on the collective performance of many individual workers. Thus, although field-level pesticide concentrations can have subtle or sublethal effects at the individual level, it is not known whether bee societies can buffer such effects or whether it results in a severe cumulative effect at the colony level. Furthermore, widespread agricultural intensification means that bees are exposed to numerous pesticides when foraging, yet the possible combinatorial effects of pesticide exposure have rarely been investigated. Here we show that chronic exposure of bumblebees to two pesticides (neonicotinoid and pyrethroid) at concentrations that could approximate field-level exposure impairs natural foraging behaviour and increases worker mortality leading to significant reductions in brood development and colony success. We found that worker foraging performance, particularly pollen collecting efficiency, was significantly reduced with observed knock-on effects for forager recruitment, worker losses and overall worker productivity. Moreover, we provide evidence that combinatorial exposure to pesticides increases the propensity of colonies to fail.

JOURNAL ARTICLE

Coston DJ, Gill RJ, Hammond RL, 2011, No evidence of volatile chemicals regulating reproduction in a multiple queen ant, NATURWISSENSCHAFTEN, Vol: 98, Pages: 625-629, ISSN: 0028-1042

JOURNAL ARTICLE

Gill RJ, Hammond RL, 2011, Workers influence royal reproduction, PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, Vol: 278, Pages: 1524-1531, ISSN: 0962-8452

JOURNAL ARTICLE

Gill RJ, Hammond RL, 2011, Workers determine queen inheritance of reproduction in a functionally monogynous ant population, ANIMAL BEHAVIOUR, Vol: 82, Pages: 119-129, ISSN: 0003-3472

JOURNAL ARTICLE

Gill RJ, Arce A, Keller L, Hammond RLet al., 2009, Polymorphic social organization in an ant, PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, Vol: 276, Pages: 4423-4431, ISSN: 0962-8452

JOURNAL ARTICLE

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