Effects of field-realistic doses of glyphosate on honeybee appetitive behaviour
Glyphosate (GLY) is a broad-spectrum herbicide used for weed control. The sub-lethal impact of GLY on non-target organisms such as insect pollinators has not yet been evaluated. Apis mellifera is the main pollinator in agricultural environments and is a well-known model for behavioural research. Hon...
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todo:paper_00220949_v217_n19_p3457_Herbert2023-10-03T14:26:07Z Effects of field-realistic doses of glyphosate on honeybee appetitive behaviour Herbert, L.T. Vázquez, D.E. Arenas, A. Farina, W.M. Apis mellifera Associative learning Glyphosate Sensitivity to reward Sub-lethal effects glycine glyphosate herbicide sucrose analogs and derivatives animal appetite bee conditioned reflex drug effects learning odor physiology reward short term memory Animals Appetitive Behavior Association Learning Bees Conditioning, Classical Glycine Herbicides Memory, Short-Term Reward Smell Sucrose Glyphosate (GLY) is a broad-spectrum herbicide used for weed control. The sub-lethal impact of GLY on non-target organisms such as insect pollinators has not yet been evaluated. Apis mellifera is the main pollinator in agricultural environments and is a well-known model for behavioural research. Honeybees are also accurate biosensors of environmental pollutants and their appetitive behavioural response is a suitable tool with which to test sub-lethal effects of agrochemicals. We studied the effects of field-realistic doses of GLY on honeybees exposed chronically or acutely to the herbicide. We focused on sucrose sensitivity, elemental and non-elemental associative olfactory conditioning of the proboscis extension response (PER), and foraging-related behaviour. We found a reduced sensitivity to sucrose and learning performance for the groups chronically exposed to GLY concentrations within the range of recommended doses. When olfactory PER conditioning was performed with sucrose reward with the same GLY concentrations (acute exposure), elemental learning and short-term memory retention decreased significantly compared with controls. Non-elemental associative learning was also impaired by an acute exposure to GLY traces. Altogether, these results imply that GLY at concentrations found in agro-ecosystems as a result of standard spraying can reduce sensitivity to nectar reward and impair associative learning in honeybees. However, no effect on foragingrelated behaviour was found. Therefore, we speculate that successful forager bees could become a source of constant inflow of nectar with GLY traces that could then be distributed among nestmates, stored in the hive and have long-term negative consequences on colony performance. © 2014. Published by The Company of Biologists Ltd JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00220949_v217_n19_p3457_Herbert |
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Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Apis mellifera Associative learning Glyphosate Sensitivity to reward Sub-lethal effects glycine glyphosate herbicide sucrose analogs and derivatives animal appetite bee conditioned reflex drug effects learning odor physiology reward short term memory Animals Appetitive Behavior Association Learning Bees Conditioning, Classical Glycine Herbicides Memory, Short-Term Reward Smell Sucrose |
| spellingShingle |
Apis mellifera Associative learning Glyphosate Sensitivity to reward Sub-lethal effects glycine glyphosate herbicide sucrose analogs and derivatives animal appetite bee conditioned reflex drug effects learning odor physiology reward short term memory Animals Appetitive Behavior Association Learning Bees Conditioning, Classical Glycine Herbicides Memory, Short-Term Reward Smell Sucrose Herbert, L.T. Vázquez, D.E. Arenas, A. Farina, W.M. Effects of field-realistic doses of glyphosate on honeybee appetitive behaviour |
| topic_facet |
Apis mellifera Associative learning Glyphosate Sensitivity to reward Sub-lethal effects glycine glyphosate herbicide sucrose analogs and derivatives animal appetite bee conditioned reflex drug effects learning odor physiology reward short term memory Animals Appetitive Behavior Association Learning Bees Conditioning, Classical Glycine Herbicides Memory, Short-Term Reward Smell Sucrose |
| description |
Glyphosate (GLY) is a broad-spectrum herbicide used for weed control. The sub-lethal impact of GLY on non-target organisms such as insect pollinators has not yet been evaluated. Apis mellifera is the main pollinator in agricultural environments and is a well-known model for behavioural research. Honeybees are also accurate biosensors of environmental pollutants and their appetitive behavioural response is a suitable tool with which to test sub-lethal effects of agrochemicals. We studied the effects of field-realistic doses of GLY on honeybees exposed chronically or acutely to the herbicide. We focused on sucrose sensitivity, elemental and non-elemental associative olfactory conditioning of the proboscis extension response (PER), and foraging-related behaviour. We found a reduced sensitivity to sucrose and learning performance for the groups chronically exposed to GLY concentrations within the range of recommended doses. When olfactory PER conditioning was performed with sucrose reward with the same GLY concentrations (acute exposure), elemental learning and short-term memory retention decreased significantly compared with controls. Non-elemental associative learning was also impaired by an acute exposure to GLY traces. Altogether, these results imply that GLY at concentrations found in agro-ecosystems as a result of standard spraying can reduce sensitivity to nectar reward and impair associative learning in honeybees. However, no effect on foragingrelated behaviour was found. Therefore, we speculate that successful forager bees could become a source of constant inflow of nectar with GLY traces that could then be distributed among nestmates, stored in the hive and have long-term negative consequences on colony performance. © 2014. Published by The Company of Biologists Ltd |
| format |
JOUR |
| author |
Herbert, L.T. Vázquez, D.E. Arenas, A. Farina, W.M. |
| author_facet |
Herbert, L.T. Vázquez, D.E. Arenas, A. Farina, W.M. |
| author_sort |
Herbert, L.T. |
| title |
Effects of field-realistic doses of glyphosate on honeybee appetitive behaviour |
| title_short |
Effects of field-realistic doses of glyphosate on honeybee appetitive behaviour |
| title_full |
Effects of field-realistic doses of glyphosate on honeybee appetitive behaviour |
| title_fullStr |
Effects of field-realistic doses of glyphosate on honeybee appetitive behaviour |
| title_full_unstemmed |
Effects of field-realistic doses of glyphosate on honeybee appetitive behaviour |
| title_sort |
effects of field-realistic doses of glyphosate on honeybee appetitive behaviour |
| url |
http://hdl.handle.net/20.500.12110/paper_00220949_v217_n19_p3457_Herbert |
| work_keys_str_mv |
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