A Simple Iterative Model Accurately Captures Complex Trapline Formation by Bumblebees Across Spatial Scales and Flower Arrangements DOI Creative Commons

Andrew Reynolds,

Mathieu Lihoreau, Lars Chittka

et al.

PLoS Computational Biology, Journal Year: 2013, Volume and Issue: 9(3), P. e1002938 - e1002938

Published: March 7, 2013

Pollinating bees develop foraging circuits (traplines) to visit multiple flowers in a manner that minimizes overall travel distance, task analogous the travelling salesman problem. We report on an in-depth exploration of iterative improvement heuristic model bumblebee traplining previously found accurately replicate establishment stable routes by between distributed over several hectares. The critical test for is its predictive power empirical data which has not been specifically developed, and here shown be consistent with observations from different research groups made at spatial scales using configurations flowers. refine account search strategy exploring their environment, unexplored predictions. find predicts 1) increasing propensity optimize scale; 2) cannot establish optimal traplines all rewarding flowers; 3) observed trade-off distance prioritization high-reward sites (with slight modification model); 4) temporal pattern acquire approximate solutions salesman-like problems dozen bouts; 5) instability visitation schedules some 6) observation flower arrays, bees' are highly individually different; 7) searching behaviour leads efficient location them. Our constitutes robust theoretical platform generate novel hypotheses our understanding about how small-brained insects representation space use it navigate complex dynamic environments.

Language: Английский

Neonicotinoids, bee disorders and the sustainability of pollinator services DOI Creative Commons
J.P. van der Sluijs, Noa Simon‐Delso, Dave Goulson

et al.

Current Opinion in Environmental Sustainability, Journal Year: 2013, Volume and Issue: 5(3-4), P. 293 - 305

Published: June 6, 2013

In less than 20 years, neonicotinoids have become the most widely used class of insecticides with a global market share more 25%. For pollinators, this has transformed agrochemical landscape. These chemicals mimic acetylcholine neurotransmitter and are highly neurotoxic to insects. Their systemic mode action inside plants means phloemic xylemic transport that results in translocation pollen nectar. wide application, persistence soil water potential for uptake by succeeding crops wild make bioavailable pollinators at sublethal concentrations year. This frequent presence honeybee hives. At field realistic doses, cause range adverse effects bumblebee colonies, affecting colony performance through impairment foraging success, brood larval development, memory learning, damage central nervous system, susceptibility diseases, hive hygiene etc. Neonicotinoids exhibit toxicity can be amplified various other agrochemicals they synergistically reinforce infectious agents such as Nosema ceranae which together produce collapse. The limited available data suggest likely similar virtually all insect pollinators. worldwide production is still increasing. Therefore transition pollinator-friendly alternatives urgently needed sake sustainability pollinator ecosystem services.

Language: Английский

Citations

456
Minimal navigation solution for a swarm of tiny flying robots to explore an unknown environment DOI Open Access
Kimberly McGuire, Christophe De Wagter, Karl Tuyls

et al.

Science Robotics, Journal Year: 2019, Volume and Issue: 4(35)

Published: Oct. 23, 2019

A minimal navigation solution is presented for swarms of tiny flying robots to explore unknown, GPS-denied environments.

Language: Английский

Citations

204
Neural effects of insecticides in the honey bee DOI
Luc Belzunces, Sylvie Tchamitchian, Jean‐Luc Brunet

et al.

Apidologie, Journal Year: 2012, Volume and Issue: 43(3), P. 348 - 370

Published: April 2, 2012

Language: Английский

Citations

189
Full Flow: Optical Flow Estimation By Global Optimization over Regular Grids DOI
Qifeng Chen, Vladlen Koltun

Published: June 1, 2016

We present a global optimization approach to optical flow estimation. The optimizes classical objective over the full space of mappings between discrete grids. No descriptor matching is used. highly regular structure enables optimizations that reduce computational complexity algorithm's inner loop from quadratic linear and support efficient tens thousands nodes displacements. show one-shot Horn-Schunck-type grids at single resolution sufficient initialize continuous interpolation achieve state-of-the-art performance on challenging modern benchmarks.

Language: Английский

Citations

162
Honeybee Colony Disorder in Crop Areas: The Role of Pesticides and Viruses DOI Creative Commons
Noa Simon‐Delso, Gilles San Martin,

Étienne Bruneau

et al.

PLoS ONE, Journal Year: 2014, Volume and Issue: 9(7), P. e103073 - e103073

Published: July 21, 2014

As in many other locations the world, honeybee colony losses and disorders have increased Belgium. Some of symptoms observed rest unspecific their causes remain unknown. The present study aims to determine role both pesticide exposure virus load on appraisal unexplained field conditions. From July 2011 May 2012, 330 colonies were monitored. Honeybees, wax, beebread honey samples collected. Morbidity mortality information provided by beekeepers, clinical visits availability analytical matrix used form 2 groups: healthy with (n = 29, n 25, respectively). Disorders included: (1) dead or which part appeared dead, had disappeared; (2) weak colonies; (3) queen loss; (4) problems linked brood not related any known disease. Five common viruses 99 pesticides (41 fungicides, 39 insecticides synergist, 14 herbicides, 5 acaricides metabolites) quantified samples.The main group are queens. most frequently found Black Queen Cell Virus, Sac Brood Deformed Wing Virus. No significant difference was between two groups. Three acaricides, 13 fungicides detected analysed samples. A correlation presence fungicide residues disorders. positive link could also be established observation disorder abundance crop surface around beehive. According our results, as a potential stressor for should further studied, either direct and/or indirect impacts bees bee colonies.

Language: Английский

Citations

161
Real-time navigation of mobile robots in problems of border patrolling and avoiding collisions with moving and deforming obstacles DOI
Alexey S. Matveev, Chao Wang, Andrey V. Savkin

et al.

Robotics and Autonomous Systems, Journal Year: 2012, Volume and Issue: 60(6), P. 769 - 788

Published: March 6, 2012

Language: Английский

Citations

152
Pollinators and Global Food Security: the Need for Holistic Global Stewardship DOI Open Access
J.P. van der Sluijs, Nora S. Vaage

Food Ethics, Journal Year: 2016, Volume and Issue: 1(1), P. 75 - 91

Published: May 9, 2016

Language: Английский

Citations

145
Optic Flow Cues Guide Flight in Birds DOI Creative Commons
Partha S. Bhagavatula, Charles Claudianos, Michael R. Ibbotson

et al.

Current Biology, Journal Year: 2011, Volume and Issue: 21(21), P. 1794 - 1799

Published: Oct. 29, 2011

Language: Английский

Citations

133
FicTrac: A visual method for tracking spherical motion and generating fictive animal paths DOI
Richard J. D. Moore, Gavin J. Taylor, Angelique C. Paulk

et al.

Journal of Neuroscience Methods, Journal Year: 2014, Volume and Issue: 225, P. 106 - 119

Published: Feb. 2, 2014

Language: Английский

Citations

132
Simultaneous mastering of two abstract concepts by the miniature brain of bees DOI Open Access
Aurore Avarguès‐Weber, Adrian G. Dyer,

Maud Combe

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2012, Volume and Issue: 109(19), P. 7481 - 7486

Published: April 19, 2012

Sorting objects and events into categories concepts is a fundamental cognitive capacity that reduces the cost of learning every particular situation encountered in our daily lives. Relational such as “same,” “different,” “better than,” or “larger than”—among others—are essential human cognition because they allow highly efficient classifying irrespective physical similarity. Mastering relational concept involves encoding relationship by brain independently linked relation is, therefore, consistent with abstraction capacities. Processing several at time presupposes an even higher level sophistication not expected invertebrate. We found miniature brains honey bees rapidly learn to master two abstract simultaneously, one based on spatial relationships (above/below right/left) another perception difference. Bees learned classify visual targets using this dual transferred their choices unknown stimuli offered best match terms dual-concept availability: components presented appropriate differed from another. This study reveals surprising facility extract set complex pictures combine them rule for subsequent choices. finding thus provides excellent opportunities understanding how processing achieved relatively simple neural architectures.

Language: Английский

Citations

124