World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
59
Citations
12960
World Ranking
12489
National Ranking
5345

Thomas C. Sparks publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Thomas C. Sparks sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 413 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 848 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 949 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 840 scientists 207–216 publications: 733 scientists 217–226 publications: 708 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 417 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 196 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 59 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 168 publications — 35th percentile

35% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Thomas C. Sparks D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Thomas C. Sparks sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 316 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 899 scientists 52–53 D-Index: 1,025 scientists 54–55 D-Index: 1,149 scientists 56–57 D-Index: 1,235 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,162 scientists 62–63 D-Index: 1,130 scientists 64–65 D-Index: 1,031 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 714 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 71 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 59 D-Index — 38th percentile

38% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Overview

Thomas C. Sparks is affiliated with Dow Chemical in the United States. Their research primarily focuses on agricultural and biological sciences, with significant contributions to biochemistry, genetics, and molecular biology. The scientist's work covers multiple subfields, including insect science, plant science, molecular biology, ecology, evolution, behavior, systematics, and pollution.

The main topics addressed in Thomas C. Sparks's research include insect resistance and genetics, insect and pesticide research, insect pest control strategies, fungal plant pathogen control, weed control and herbicide applications, insect-plant interactions and control, and pesticide and herbicide environmental studies.

Thomas C. Sparks has published extensively in several scientific journals. Frequent publication venues include:

  • Pesticide Biochemistry and Physiology
  • Pest Management Science
  • Journal of Agricultural and Food Chemistry
  • SSRN Electronic Journal
  • Insect Biochemistry and Molecular Biology

Recent published papers demonstrate the focus and scope of the scientist's work:

  • Insecticides, biologics and nematicides: Updates to IRAC's mode of action classification - a tool for resistance management (2020, Pesticide Biochemistry and Physiology)
  • Insecticide resistance management and industry: the origins and evolution of the Insecticide Resistance Action Committee (IRAC) and the mode of action classification scheme (2021, Pest Management Science)
  • Structure Simplification of Natural Products as a Lead Generation Approach in Agrochemical Discovery (2021, Journal of Agricultural and Food Chemistry)
  • Impact of natural products on discovery of, and innovation in, crop protection compounds (2021, Pest Management Science)
  • Natural Product-Based Crop Protection CompoundsOrigins and Future Prospects (2023, Journal of Agricultural and Food Chemistry)

Thomas C. Sparks frequently collaborates with several co-authors, including:

  • Stephen O. Duke
  • Melissa Siebert
  • Robert J Bryant
  • Gerald B. Watson
  • Frank J. Wessels

The scientist's work spans a wide array of topics related to pest management and agrochemical research, contributing to the understanding of insecticide resistance and the development of novel crop protection strategies. Their publications demonstrate involvement in advancing knowledge on resistance management tools, mode of action classification, and the role of natural products in agrochemical innovation.

Best Publications

  • IRAC: Mode of action classification and insecticide resistance management

    Thomas C. Sparks;Ralf Nauen

  • Spinosad – a case study: an example from a natural products discovery programme

    Gary D Thompson;Robert Dutton;Thomas C Sparks

  • Natural products as insecticides: the biology, biochemistry and quantitative structure-activity relationships of spinosyns and spinosoids.

    Thomas C Sparks;Gary D Crouse;Gregory Durst;Gregory Durst

  • Discovery and characterization of sulfoxaflor, a novel insecticide targeting sap-feeding pests.

    Yuanming Zhu;Michael R Loso;Gerald B Watson;Thomas C Sparks

  • Sulfoxaflor and the sulfoximine insecticides: Chemistry, mode of action and basis for efficacy on resistant insects

    Thomas C. Sparks;Gerald B. Watson;Michael R. Loso;Chaoxian Geng

  • A rapid assay for insect juvenile hormone esterase activity.

    Bruce D. Hammock;Thomas C. Sparks

  • Insecticides, biologics and nematicides: Updates to IRAC's mode of action classification - a tool for resistance management.

    Thomas C. Sparks;Andrew J. Crossthwaite;Ralf Nauen;Shinichi Banba

  • Insecticide discovery: an evaluation and analysis.

    Thomas C. Sparks

  • Natural products for pest control: an analysis of their role, value and future

    B Clifford Gerwick;Thomas C Sparks

  • Biological Activity of the Spinosyns, New Fermentation Derived Insect Control Agents, on Tobacco Budworm (Lepidoptera: Noctuidae) Larvae

    Thomas C. Sparks;Gary D. Thompson;Herbert A. Kirst;Mark B. Hertlein

  • Biological characterization of sulfoxaflor, a novel insecticide.

    Jonathan M Babcock;Clifford B Gerwick;Jim X Huang;Michael R Loso

  • Resistance and cross-resistance to the spinosyns – A review and analysis

    Thomas C. Sparks;James E. Dripps;Gerald B. Watson;Doris Paroonagian

  • A METHOD TO CONTROL INSECTS RESISTANT TO COMMON INSECTICIDES USING SULFOXIMINES

    Huang Jim X;Rogers Richard B;Orr Nailah;Sparks Thomas C

  • Perspectives on the agrochemical industry and agrochemical discovery.

    Thomas C Sparks;Beth A Lorsbach

  • Evolution of Insect Resistance to Insecticides: A Reevaluation of the Roles of Physiology and Behavior

    Jeffrey A. Lockwood;Thomas C. Sparks;Richard N. Story

  • Novel nicotinic action of the sulfoximine insecticide sulfoxaflor.

    Gerald B. Watson;Michael R. Loso;Jonathan M. Babcock;James M. Hasler

  • Natural products, their derivatives, mimics and synthetic equivalents: role in agrochemical discovery

    Thomas C Sparks;Donald R Hahn;Negar V Garizi

  • A spinosyn-sensitive Drosophila melanogaster nicotinic acetylcholine receptor identified through chemically induced target site resistance, resistance gene identification, and heterologous expression.

    Gerald B. Watson;Scott W. Chouinard;Kevin R. Cook;Chaoxian Geng;Chaoxian Geng

  • Trifluoromethylketones as possible transition state analog inhibitors of juvenile hormone esterase

    Bruce D. Hammock;Keith D. Wing;James McLaughlin;Victor M. Lovell

  • Insecticide resistance management and industry: the origins and evolution of the Insecticide Resistance Action Committee (IRAC) and the mode of action classification scheme.

    Thomas C Sparks;Nicholas Storer;Alan Porter;Russell Slater

Frequent Co-Authors

Bruce D. Hammock
Bruce D. Hammock University of California, Davis
Patrick F. Dowd
Patrick F. Dowd Agricultural Research Service
Mark J. Kurth
Mark J. Kurth University of California, Davis
Ralf Nauen
Ralf Nauen Bayer (Germany)
Thomas J. Meade
Thomas J. Meade Northwestern University
Ian Denholm
Ian Denholm University of Hertfordshire
Philip J. Batterham
Philip J. Batterham Australian National University
Christine Martin
Christine Martin University of Clermont Auvergne
James C. Fettinger
James C. Fettinger University of California, Davis
Lane D. Foil
Lane D. Foil Louisiana State University Agricultural Center

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