Colony collapse disorder (CCD), which has caused high colony mortality rates in the European honeybee (Apis mellifera), is a pressing economical and ecological problem. I revisited Woodcock et al.'s (2017a) paper, \"Country-specic Effects of Neonicotinoid Pesticides on Honey Bees and Wild Bees\", in light of unsound statistical methods used in the original study. In the first part of this paper, I attempted to replicate the analysis underlying key findings in the original paper. In the second part, I reanalyzed the data using mostly non-parametric methods in order to obtain robust results. I did not find any evidence for a harmful effect from neonicotinoids (NNIs). There was weak evidence that NNI exposure was associated with lower colony mortality in UK sites. ii
","abstract_html":"<p>Colony collapse disorder (CCD), which has caused high colony mortality rates in the European honeybee (Apis mellifera), is a pressing economical and ecological problem. I revisited Woodcock et al.'s (2017a) paper, "Country-specic Effects of Neonicotinoid Pesticides on Honey Bees and Wild Bees", in light of unsound statistical methods used in the original study. In the first part of this paper, I attempted to replicate the analysis underlying key findings in the original paper. In the second part, I reanalyzed the data using mostly non-parametric methods in order to obtain robust results. I did not find any evidence for a harmful effect from neonicotinoids (NNIs). There was weak evidence that NNI exposure was associated with lower colony mortality in UK sites. ii</p>","abstract_has_math":false,"creators":["Liang, Qingchen"],"institution":null,"degree_name":"Master of Arts (MA)","degree_level":"Open Access Thesis","degree_discipline":"Mathematics and Statistics","degree_department":null,"school":null,"contributors":["Khairul Islam, Ph.D.","Rita Chattopadhyay, Ph.D.","Tanweer Shapla, Ph.D."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2019,"date_issued":"2019-01-01T08:00:00Z","date_published":"2019-01-01T08:00:00Z","updated_at":"2026-07-24T02:17:47Z","subjects":["Bootstrapping","Colony Collapse Disorder","Honeybee","Neonicotinoids","Non-parametric Data Analysis","Reanalysis","Ecology and Evolutionary Biology","Statistics and Probability"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://commons.emich.edu/theses/1134","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Khairul Islam, Ph.D.","Rita Chattopadhyay, Ph.D.","Tanweer Shapla, Ph.D."]},{"key":"dc:creator","label":"Author","values":["Liang, Qingchen"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2022-06-01T07:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mathematics and Statistics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Open Access Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Arts (MA)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Bootstrapping","Colony Collapse Disorder","Honeybee","Neonicotinoids","Non-parametric Data Analysis","Reanalysis","Ecology and Evolutionary Biology","Statistics and Probability"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://commons.emich.edu/theses/1134"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Colony collapse disorder (CCD), which has caused high colony mortality rates in the European honeybee (Apis mellifera), is a pressing economical and ecological problem. I revisited Woodcock et al.'s (2017a) paper, \"Country-specic Effects of Neonicotinoid Pesticides on Honey Bees and Wild Bees\", in light of unsound statistical methods used in the original study. In the first part of this paper, I attempted to replicate the analysis underlying key findings in the original paper. In the second part, I reanalyzed the data using mostly non-parametric methods in order to obtain robust results. I did not find any evidence for a harmful effect from neonicotinoids (NNIs). There was weak evidence that NNI exposure was associated with lower colony mortality in UK sites. ii
"]},{"key":"dc:title","label":"Title","values":["The effect of neonicotinoids on Apis mellifera: A revisit"]}]}],"canonical_facts":{"dc:contributor":["Khairul Islam, Ph.D.","Rita Chattopadhyay, Ph.D.","Tanweer Shapla, Ph.D."],"dc:creator":["Liang, Qingchen"],"dc:date.available":["2022-06-01T07:00:00Z"],"dc:description.abstract":["Colony collapse disorder (CCD), which has caused high colony mortality rates in the European honeybee (Apis mellifera), is a pressing economical and ecological problem. I revisited Woodcock et al.'s (2017a) paper, \"Country-specic Effects of Neonicotinoid Pesticides on Honey Bees and Wild Bees\", in light of unsound statistical methods used in the original study. In the first part of this paper, I attempted to replicate the analysis underlying key findings in the original paper. In the second part, I reanalyzed the data using mostly non-parametric methods in order to obtain robust results. I did not find any evidence for a harmful effect from neonicotinoids (NNIs). There was weak evidence that NNI exposure was associated with lower colony mortality in UK sites. ii
"],"dc:identifier":["https://commons.emich.edu/theses/1134"],"dc:subject":["Bootstrapping","Colony Collapse Disorder","Honeybee","Neonicotinoids","Non-parametric Data Analysis","Reanalysis","Ecology and Evolutionary Biology","Statistics and Probability"],"dc:title":["The effect of neonicotinoids on Apis mellifera: A revisit"],"thesis:degree_discipline":["Mathematics and Statistics"],"thesis:degree_level":["Open Access Thesis"],"thesis:degree_name":["Master of Arts (MA)"]},"updated_at":"2026-07-24T02:17:47Z"}