The Effects of Neonicotinoids on the Honeybee Population

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Introduction: Honeybees, bumblebees, and solitary bees are the most important pollinators worldwide, with 35% of the world’s crop production dependent upon them (Blacquière et al. 2012). The declination of the honeybee problem is not just a problem in Canada, it is an issue worldwide. Worker bees are disappearing and not returning to their hives, this is known as colony collapse disorder (CCD) and it results in reduced colony growth and reduced queen production (Girolami et al. 2009; Whitehorn et al. 2012). In the agricultural industry chemical insecticides are extremely important for crop production; they are responsible for preserving approximately one fifth of our crop yield. Spraying insecticides produces many negative effects such as killing beneficial insects like pollinators. One method to alleviate this problem was to coat the seed with insecticide, such as neonicotinoid, so when the plant germinates and grows the chemical is distributed throughout the entirety of the plant. The goal was to protect the plant from pests that consume the crop tissue, thereby not affecting the pollinators or other beneficial species (Cresswell 2010).
Risk Characterization:
Step 1: Hazard/ Problem Identification: Neonicotinoids are applied to the surface of the seed and then are distributed throughout the entire plant, giving the plant lasting protection from insects (Girolami et al. 2009; Marzaro et al. 2011). Neonicotinoids pose a risk to many different insects including honeybees, as well as arthropods, birds and smaller mammals (Goulson 2013). Neonicotinoid is registered for use in 120 countries, and for use on over 140 crops (Whitehorn et al. 2012).
Aerial contamination can occur when the seeds are planted and the insecticide can result in being blown into the air (Marzaro et al. 2011). It was found that various concentrations of neonicotinoids are present in guttation

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