Overview of Pesticide Residues in Stored Pollen and Their Potential Effect on Bee Colony (Apis mellifera) Losses in Spain

Garrido-Bailón, Encarna; Nozal, Marı́a J.; González-Porto, Amelia V.; Martín-Hernández, Raquel; Diego, Juan; Jiménez, Juan J.; Bernal, José; Higes, Mariano

doi:10.1603/ec10235

Cited by 111 publications

(91 citation statements)

References 35 publications

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“…Even if chemical residues are found in the pollen grains of plants, the concentrations found are lower than the LD 50 of these insecticides (Schumuck et al, 2001, Bernal et al, 2010. Thus when adult bees collect and feed on pollen grains cotton plants that received seed treatment these do not pose a risk to adult of A. mellifera, as observed in this study.…”

Section: Toxicity Of Pollen To a Mellifera Workerssupporting

confidence: 52%

Pollen Toxicity from Seed-Treated Cotton on Bees and Pollen Collection Capacity

Souza¹,

Degrande²,

Azambuja³

et al. 2017

JAS

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Apis mellifera bees that forage in agricultural fields may be exposed to pesticides through many routes. One of them is the collection of pollen contaminated with insecticides. In this study, we evaluate the mortality of adult honeybees exposed to pollen from cotton plants whose seeds were treated with insecticides thiamethoxam, clothianidin, imidacloprid and fipronil, and the pollen collection capacity of adult honeybees in cotton fields. Bee mortality based on linear regression analysis showed significant differences, but no differences were noted among treatments. According to the contrast analysis of the mean groups of insecticides against the mean of the control group, no significant differences were found, indicating a natural mortality for all treatments including the control. Quantitative analysis of the pollen revealed the presence of only cotton pollen grains on bees, indicating floral fidelity of Africanized honeybees. Pearson's correlation coefficient was positive, but statistically insignificant, for increase in pollen collection with time.

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Section: Toxicity Of Pollen To a Mellifera Workerssupporting

confidence: 52%

Pollen Toxicity from Seed-Treated Cotton on Bees and Pollen Collection Capacity

Souza¹,

Degrande²,

Azambuja³

et al. 2017

JAS

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“…Nosema apis, Nosema ceranae, Paenibacillus larvae, Varroa destructor, tripanosomatids, AIV, APV, BQCV, CPV, DWV, IAPV, KBV, and SBV. 2009; Bernal et al, 2010) to detect the presence of 40 different residues (Table 1).…”

Section: List Of Pathogens Tested (N=15)mentioning

confidence: 99%

Risk factors associated with honey bee colony loss in apiaries in Galicia, NW Spain

Meana

Llorens-Picher

Euba

et al. 2017

Span. j. agric. res.

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A cross-sectional study was carried out in Galicia, NW Spain, in order to estimate the magnitude of honey bee colony losses and to identify potential risk factors involved. A total of 99 samples from 99 apiaries were collected in spring using simple random sampling. According to international guidelines, the apiaries were classified as affected by colony loss or asymptomatic. Each sample consisted of worker bees, brood and comb-stored pollen. All worker bees and brood samples were analysed individually in order to detect the main honey bee pathogens. Moreover, the presence of residues of the most prevalent agrotoxic insecticides and acaricides was assessed in comb-stored pollen. The general characteristics of the apiaries and sanitary information regarding previous years was evaluated through questionnaires, while the vegetation surrounding the apiaries sampled was assessed by palynological analysis of comb-stored pollen. The colony loss prevalence was 53.5% (CI 95% =43.2-63.9) and Nosema ceranae was found to be the only risk factor strongly associated with colony loss. The decision tree also pointed out the impact of the Varroa mite presence while variables such as apiary size, the incorrect application of Varroa mite treatments, and the presence of Acarapis woodi and Kashmir bee virus (KBV) were identified as possible co-factors.Additional key words: colony collapse; Apis mellifera; Nosema ceranae; Varroa destructor; imidacloprid; fipronil; comb-stored pollen.Correspondence should be addressed to Aránzazu Meana Mañes: ameana@ucm.es (Tables S1, S2 and S3) accompanies the paper on SJAR's website.

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“…CCD is an abrupt disappearance of a honey bee colony. 20,21 One hypothesis for the disappearance of bee populations is the use of some insecticide groups such as neonicotinoids. 22 Given the importance of A. monuste as a pest of brassica and the role of natural enemies and pollinators in the natural environment and in agroecosystems, this study aimed to determine the toxicity of synthetic amides (whose insecticidal activity is unknown) to A. monuste and its selectivity in favor of the predator S. saevissima and the pollinator T. angustula.…”

Section: Introductionmentioning

confidence: 99%

Insecticidal Activity of Dienamides on Cabbage Caterpillar and Beneficial Insects

Lopes¹,

Alvarenga²,

Aguiar³

et al. 2018

Quim. Nova

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Recebido em 15/08/2017; aceito em 21/12/2017; publicado na web em 01/02/2018The demand for new insecticides is increasing due to the appearance of insect populations that are resistant to currently used products. New insecticides should be efficient in controlling pests and present low toxicity to non-target organisms. Ascia monuste (Lepidoptera: Pieridae) is a destructive pest of cole vegetables, and the fire ant Solenopsis saevissima (Hymenoptera: Formicidae) is an important predator of these caterpillars in brassica crops. Tetragonisca angustula (Hymenoptera: Apidae) is very important in pollinating many plants and providing honey. Therefore, this study evaluated the toxicity of synthetic amides to A. monuste and its selectivity in favor of S. saevissima and T. angustula. The amides (2E,4E)-N-propylhexa-2,4-dienamide (3) and (2E,4E)-N-butylhexa-2,4-dienamide (4) caused high (96 and 93%, respectively) and fast (48 h) mortality of A. monuste. The amides 3 and 4 were not harmful to the predator (mortality of 5.7% for amide 3 and 7.14% for amide 4) and were slightly harmful to the pollinator (mortality of 38.57% for amide 3 and 28.12% for amide 4). The amides 3 and 4 are promising, as insecticides, due to the high and rapid mortality of A. monuste with low and moderate toxicity to S. saevissima and T. angustula, respectively.

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Overview of Pesticide Residues in Stored Pollen and Their Potential Effect on Bee Colony (Apis mellifera) Losses in Spain

Cited by 111 publications

References 35 publications

Pollen Toxicity from Seed-Treated Cotton on Bees and Pollen Collection Capacity

Pollen Toxicity from Seed-Treated Cotton on Bees and Pollen Collection Capacity

Risk factors associated with honey bee colony loss in apiaries in Galicia, NW Spain

Insecticidal Activity of Dienamides on Cabbage Caterpillar and Beneficial Insects

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