D. Susan Willis Chan

ORCID: 0000-0003-1910-0768
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About
Contact & Profiles
Research Areas
  • Plant and animal studies
  • Insect and Pesticide Research
  • Insect-Plant Interactions and Control
  • Insect and Arachnid Ecology and Behavior
  • Environmental DNA in Biodiversity Studies
  • Lepidoptera: Biology and Taxonomy
  • Identification and Quantification in Food
  • Hymenoptera taxonomy and phylogeny
  • Species Distribution and Climate Change
  • Ecology and Vegetation Dynamics Studies
  • Plant Parasitism and Resistance
  • Health, Environment, Cognitive Aging
  • Fossil Insects in Amber
  • Genomics and Phylogenetic Studies
  • Culture, Economy, and Development Studies
  • COVID-19 diagnosis using AI
  • Genetic diversity and population structure

University of Guelph
2018-2024

Trent University
2022

Swedish University of Agricultural Sciences
2021

Abstract Using the hoary squash bee ( Peponapis pruinosa ) as a model, we provide first probabilistic risk assessment of exposure to systemic insecticides in soil for ground-nesting bees. To assess acute and chronic scenarios Cucurbita field crops, concentrations clothianidin, thiamethoxam imidacloprid (neonicotinoids) chlorantraniliprole (anthranilic diamide) cropped were plotted produce an environmental distribution each insecticide. The probability exceedance several endpoints (LC 50 s)...

10.1038/s41598-019-47805-1 article EN cc-by Scientific Reports 2019-08-14

Abstract Insect pollinators are threatened by multiple environmental stressors, including pesticide exposure. Despite being important pollinators, solitary ground-nesting bees inadequately represented risk assessments reliant almost exclusively on honeybee ecotoxicology. Here we evaluate the effects of realistic exposure via squash crops treated with systemic insecticides (Admire-imidacloprid soil application, FarMore FI400-thiamethoxam seed-coating, or Coragen-chlorantraniliprole foliar...

10.1038/s41598-021-83341-7 article EN cc-by Scientific Reports 2021-02-19

To associate specimens identified by molecular characters to other biological knowledge, we need reference sequences annotated Linnaean taxonomy. In this study, (1) report the creation of a comprehensive library DNA barcodes for arthropods an entire country (Finland), (2) publish library, and (3) deliver new identification tool insects spiders, as based on resource. The contains mtDNA COI 11,275 (43%) 26,437 arthropod species known from Finland, including 10,811 (45%) 23,956 insect species....

10.1111/1755-0998.13510 article EN cc-by-nc Molecular Ecology Resources 2021-09-25

In North America, approximately 21 % (739 species) of the total wild bee diversity is known to be associated with crops, species varying in extent this association. While current evaluations pesticide effects on bees primarily focus a limited subset species, new needed ensure comprehensive protection all agricultural contexts. This study introduces novel approach characterize and compare relative potential risk for their association crops. Using intrinsic vulnerability traits extrinsic...

10.1016/j.scitotenv.2024.175378 article EN cc-by-nc The Science of The Total Environment 2024-08-08

Considering the critical importance of insect pollination to food security and documented declines in wild bee populations, it is imperative develop effective conservation management strategies that promote health communities associated with agroecosystems. Identifying visitors crops, including crop-flower species nest within cropping areas, may prove this endeavor as optimal differ among and/or guilds, regions, systems. Although lists are North American crops scattered throughout...

10.3389/fsufs.2022.943237 article EN cc-by Frontiers in Sustainable Food Systems 2022-11-04

The increasing demand for insect-pollinated crops highlights the need crop pollination paradigms that include all available pollinators. In North America, Cucurbita (pumpkin, squash) depend on both wild (solitary and Bombus spp.: Hymenoptera: Apidae) managed honey bees (Apis mellifera L. 1758: pollination. Temporal spatial differences in abundance may determine which bee taxa are most important pollinators of crops. We surveyed visiting flowers 19 farms over four years (2015-2018) during...

10.1093/ee/nvab045 article EN Environmental Entomology 2021-04-17

Abstract Using the hoary squash bee ( Peponapis pruinosa ) as a model, we provide first probabilistic risk assessment of exposure to systemic insecticides in soil for ground-nesting bees. To assess acute and chronic scenarios Cucurbita field crops, concentrations clothianidin, thiamethoxam imidacloprid (neonicotinoids) chlorantraniliprole (anthranilic diamide) cropped were plotted produce an environmental distribution each insecticide. The probability exceedance several endpoints (LC 50 s)...

10.1101/434498 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2018-10-31

The phenology of crop flowering and pollinator reproduction can become asynchronous at the edge their respective ranges. At a northern site in Peterborough County, Ontario, we evaluated offspring emergence Cucurbita pollen specialist hoary squash bees (Eucera pruinosa) from nests enclosures to determine phenological synchrony with (Cucurbita pepo). For crop, percentage that emerged time provide pollination services during window. bees, compared period when both male females were present...

10.1016/j.cris.2021.100022 article EN cc-by-nc-nd Current Research in Insect Science 2021-01-01

Despite their indispensable role in food production 1,2 , insect pollinators are threatened by multiple environmental stressors, including pesticide exposure 2-4 . Although honeybees important, most pollinating species wild, solitary, ground-nesting bees 1,4-6 that inadequately represented honeybee-centric regulatory risk assessment frameworks 7,8 Here, for the first time, we evaluate effects of realistic to systemic insecticides (imidacloprid, thiamethoxam or chlorantraniliprole) on a bee...

10.1101/2020.10.07.330605 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2020-10-08

BOLD, the Barcode of Life Data System, supports acquisition, storage, validation, analysis, and publication DNA barcodes, activities requiring integration molecular, morphological, distributional data. Its pivotal role in curating reference library coupled with its data management analysis capabilities, make it a central resource for biodiversity science. It enables rapid, accurate identification specimens also reveals patterns genetic diversity evolutionary relationships among taxa....

10.48550/arxiv.2404.05696 preprint EN arXiv (Cornell University) 2024-04-08

To associate specimens identified by molecular characters to other biological knowledge, we need reference sequences annotated Linnaean taxonomy. In this paper, 1) report the creation of a comprehensive library DNA barcodes for arthropods an entire country (Finland), 2) publish library, and 3) deliver new identification tool based on resource. The contains mtDNA COI 11,275 (43%) 26,437 arthropod species known from Finland, including 10,811 (45%) 23,956 insect species. quantify improvement in...

10.22541/au.162245457.73290867/v1 preprint EN Authorea (Authorea) 2021-05-31
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