Honey Bees: Estimating the Environmental Impact of Chemicals - Chapter 5 pdf

Honey Bees: Estimating the Environmental Impact of Chemicals - Chapter 3 pps

... to classifying the product into one of the following categories:high-, medium-, and low-risk products. Each stage of the procedure leadsto either an assessment of the risk (and therefore classification ... being the CEB test No. 95 method of the Commis-sion des essais biologiques (CEB) [ 13] .ã Assessment of the effects of application of the product outdoors undera wire meshed tunnel; the of cial ... remain,particularly in relation to the reliability of the tests requested and theirfeasibility. The assessment of the effects of plant protection products isbased on the calculation of the Hazard Quotient,...

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Honey Bees: Estimating the Environmental Impact of Chemicals - Chapter 5 pdf

... to testing), the motivation of the bees to get food wouldnot overpass the fifth trial, the level of the CR then starting to decrease.Most often the level of CR reaches a maximum by the third trial. ... sublethal effects of chemicals on the memorization of the CS. Honey bees exposed to pyrethroids at the LC 50 exhibited maximum CR levels of 30 50 percent, while bees exposed onlyto acetone-treated filter ... response as a measure of the sub-lethal effects of chemicals on honey bees can be a reliable indicator of the hazards associated with the exposure to sublethal doses of toxic com-pounds, and consequently...

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Honey Bees: Estimating the Environmental Impact of Chemicals - Chapter 6 pps

... channel. Imidacloprid (IMI) {1–[ ( 6- chloro- 3- pyridinyl)methyl ]-4 ,5-dihydro-N-nitro-1H-imidazol-2-amine} is one of these new molecules (Figure 6. 1). According to the literature, IMI ininsects acts ... labeling (Figure 6. 5C). In the basal ring the mean gray level of the 10 6 M group was significantly lower compared to the saline group.In the 10Ϫ4M IMI-treated group, the CO staining in the upper ... acetylcholine-induced currents [2, 4].Finally, the dual effect of IMI can be explained by the presence in the central nervous system of the honey bee of two types of nicotinic receptorsas shown in the...

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Honey Bees: Estimating the Environmental Impact of Chemicals - Chapter 8 pptx

... site [32]. These studies indicated that the onlymajor source of cobalt-56, cobalt-60, manganese-54, sodium-22, and tung-sten- 181 near the study site was the waste lagoon. Because the bees wereonly ... taking up the contaminantsdirectly from the lagoon water; and therefore, the redistribution of conta-minants to the plants in the area was somewhat limited. The levels of cobalt-60 and sodium-22 ... Pol-lution monitoring of Puget Sound with honey bees. Science 227, 80 0 80 1. 8 Wallwork-Barber, M.K., Ferenbaugh, R.W. and Gladney, E.S. (1 982 ). The use of honey bees as monitors of environmental pollution....

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Honey Bees: Estimating the Environmental Impact of Chemicals - Chapter 10 pdf

... segments. The concentrations or activities of the major-ity of the elements studied were lower in the 1-year-old branch segmentscompared to the branch tops. In the case of Rb, 40K, and 137Cs they ... Only Ca with a value of 0. 810 percent was even near the 1 percent level.Among the honey types studied, honeydew honey exhibited the best indi-cator capabilities of all of the elements and radionuclides. ... beenmeasured. The analysis of the transfer of these radionuclides and selectedelements from soils through conifers and into various types of honeysclearly reveals the relevance of the honeydew honey...

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Honey Bees: Estimating the Environmental Impact of Chemicals - Chapter 12 pptx

... types of honeys, have clearly addressed these problems. They have shown that in the acacia honey, the concentrations of most of the trace elements werelower than those generally found in the other ... amounts of Ca and P,all the other elements are present in small quantities. The particular loca-tion of Al on Figure 12. 4A, but also on Figures 12. 2A and 12. 3A, has to berelated to the ubiquity of ... parts of the information. Conversely, with HCA, all the information of the data matrix is displayed through two dendrograms: one for the vari-ables and another for the objects. Therefore, the...

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Honey Bees: Estimating the Environmental Impact of Chemicals - Chapter 13 ppt

... 1996 of lepidopteran-insect-resistant cotton in the USA [7]. The expression of an insecticidal protein in plants presents many advan-tages over the exogenous application of chemicals. The “toxin,” ... of these Cry proteins isabout 130 kDa and they are produced in an inactive form. After ingestion, the alkaline environment of the insect midgut causes the crystals to dis-solve and release their ... 9C), and the promoter associ-ated with the coding sequence (which affects the quantity and location of the Cry protein). In 1999, 30 percent of the cultivated area in the USAconsisted of transgenic...

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Honey Bees: Estimating the Environmental Impact of Chemicals - Chapter 15 (end) docx

... conclusion, there are two possibilities to avoid risk for honey bees: the nonexpression of the toxin in the tissues bees feed on, or the innocu-ousness of the toxin for bees. The risk assessment of the ... investigated such as the location of the bee on the plant (flowers or green parts, rank from the top of the flower visited on the plant), or the type of behavior (exploration of the flower, foraging ... of the sublethal effects of chemical pesticides and the risk assessment of GM plants, the main dif-ference relies on the fact that the evaluation of GM plant implies speci - cally the study of...

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