Biological and Biochemical Effects of Chronic Exposure to Very Low Levels of Dietary Cypermethrin (Cymbush) on Honeybee Colonies (Hymenoptera: Apidae)

Bendahou, Najib; Fléché, C.; Bounias, M.

doi:10.1006/eesa.1999.1812

Cited by 30 publications

(16 citation statements)

References 31 publications

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“…These new regulatory tests need to assess the toxicity of these molecules and their metabolites. They might be elaborated on the grounds of existing experimental studies which have investigated the chronic impacts of these molecules on honeybees (Stoner et al, 1982;Suchail et al, 2001;Moncharmont et al, 2003), as well as their sublethal effects on honeybees behaviour (Cox and Wilson, 1984;Johansen, 1984;Taylor et al, 1987;Decourtye et al, 2003;Thompson, 2003) and physiology (Bounias et al, 1985;Bendahou et al, 1999;Papaefthimiou and Theophilidis, 2001).…”

Section: Discussionmentioning

confidence: 99%

Modes of honeybees exposure to systemic insecticides: estimated amounts of contaminated pollen and nectar consumed by different categories of bees

et al. 2005

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-The hazard posed to honeybees by systemic insecticides is determined by toxicity tests that are designed to study the effects of insecticides applied on the aerial parts of plants, but are not adapted to systemic substances used as soil or seed treatments. Based on the available data found in the literature, this paper proposes modes of honeybees exposure to systemic insecticides by estimating their pollen and nectar consumption. Estimates are given for larvae and for the categories of adults which consume the highest amounts ofpollen, the nurse bees, and -nectar, the wax-producing bees, the brood attending bees, the winter bees, and the foraging bees. As a case study, we illustrate these estimates with the example of imidacloprid because its concentrations in sunflower nectar and in sunflower and maize pollens of seed-dressed plants have been precisely determined, and because its levels of lethal, sublethal, acute, and chronic toxicities have been extensively investigated.Apis mellifera / systemic insecticide / exposure / imidacloprid / nectar / pollen

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Section: Discussionmentioning

confidence: 99%

Modes of honeybees exposure to systemic insecticides: estimated amounts of contaminated pollen and nectar consumed by different categories of bees

et al. 2005

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“…When package bees containing a laying queen were fed with the 2, 4, 5 T and 2, 4 D herbicides at 100 mg/kg, some of the eggs were unable to hatch, thus presenting as a bad brood pattern (Morton and Moffett, 1972). Bendahou et al (1999) Ovicidal effects, suggested by egg replacement in the cells, can occur after exposure to IGR insecticides such as fenoxycarb or diflubenzuron (Thompson et al, 2005). The maximum replacement rate measured in the first week after treatment was 60% and 90% for fenoxycarb-and diflubenzuron-treated colonies respectively.…”

Section: Reduction In Egg Productionmentioning

confidence: 99%

Standard methods for toxicology research inApis mellifera

Mędrzycki

Giffard²,

Aupinel³

et al. 2013

Journal of Apicultural Research

153

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SummaryModern agriculture often involves the use of pesticides to protect crops. These substances are harmful to target organisms (pests and pathogens). Nevertheless, they can also damage non-target animals, such as pollinators and entomophagous arthropods. It is obvious that the undesirable side effects of pesticides on the environment should be reduced to a minimum. Western honey bees (Apis mellifera) are very important organisms from an agricultural perspective and are vulnerable to pesticide-induced impacts. They contribute actively to the pollination of cultivated crops and wild vegetation, making food production possible. Of course, since Apis mellifera occupies the same ecological niche as many other species of pollinators, the loss of honey bees caused by environmental pollutants suggests that other insects may experience a similar outcome. Because pesticides can harm honey bees and other pollinators, it is important to register pesticides that are as selective as possible. In this manuscript, we describe a selection of methods used for studying pesticide toxicity/selectiveness towards Apis mellifera. These methods may be used in risk assessment schemes and in scientific research aimed to explain acute and chronic effects of any target compound on Apis mellifera. Métodos estándar para la investigación toxicológica en Apis mellifera ResumenLa agricultura moderna a menudo implica el uso de plaguicidas para proteger los cultivos. Estas sustancias son dañinas para los organismos objetivo (plagas y patógenos). Sin embargo, también pueden dañar a animales que no son objetivo, como artrópodos polinizadores y entomófagos. Obviamente los efectos secundarios indeseables de los plaguicidas sobre el medio ambiente deben ser reducidos al mínimo. Las abejas occidentales (Apis mellifera) son organismos muy importantes desde el punto de vista agrícola y son vulnerables a los impactos inducidos por los plaguicidas. Contribuyen activamente a la polinización de los cultivos y de la vegetación silvestre, lo que hace posible la producción de alimentos. Como Apis mellifera ocupa el mismo nicho ecológico que muchas otras especies de polinizadores, la pérdida de las abejas melíferas causada por contaminantes ambientales sugiere que otros insectos pueden experimentar un resultado similar. Ya que los plaguicidas pueden dañar a las abejas y a otros polinizadores, es importante registrar los plaguicidas que sean lo más selectivos posible. En este artículo, se describe una selección de los métodos utilizados para el estudio de la toxicidad y el efecto selectivo de los plaguicidas hacia Apis mellifera. Estos métodos se pueden utilizar en sistemas de evaluación de riesgo y en la investigación científica para explicar los efectos agudos y crónicos en Apis mellifera de cualquier compuesto objetivo.

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“…Depending on the methods, different Lowest Observed Effect Concentrations were found, which questioned the value of these bioassays in terms of their representation of effects found under natural conditions. Sublethal effects were also reported for other pesticides, such as delayed mortality or disappearance after low dose treatment with cypermethrin (Bendahou et al, 1999), decreased egg laying due to sublethal doses of dimethoate (Lensing, 1986), or disruption of homing flights after exposure to sublethal doses of deltamethrin (Vandame et al, 1995).…”

Section: Methods To Assess Behavioural Effects Of Pesticidesmentioning

confidence: 89%

Behavioural methods to assess the effects of pesticides on honey bees

et al. 2002

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-We reported on the use of experimental procedures dealing with these behavioural skills in the assessment of pesticide effects. The relevance of the following methods are discussed: (1) use of automatic activity counters set at the hive entrance to establish the balance between outgoing and incoming worker bees; (2) observation of the homing flights of bees; (3) the analysis of the information encoded in the dances of returning foragers; and (4) recording of the conditioned proboscis extension response on restrained bees to evaluate individual learning performances involved in foraging behaviour. These behavioural assays could be developed for sublethal toxicity assessment. However, careful validation of the tests is needed before being used in a routine evaluation procedure. At a minimum, they are valuable tools to understand the mechanisms underlying insecticide toxicity.Apis mellifera / ecotoxicology / risk assessment / pesticide / behaviour

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Biological and Biochemical Effects of Chronic Exposure to Very Low Levels of Dietary Cypermethrin (Cymbush) on Honeybee Colonies (Hymenoptera: Apidae)

Cited by 30 publications

References 31 publications

Modes of honeybees exposure to systemic insecticides: estimated amounts of contaminated pollen and nectar consumed by different categories of bees

Modes of honeybees exposure to systemic insecticides: estimated amounts of contaminated pollen and nectar consumed by different categories of bees

Standard methods for toxicology research inApis mellifera

Behavioural methods to assess the effects of pesticides on honey bees

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