Re-publish Scharf Insecticide MOA session with updated deliverables

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-17 22:16:54 -04:00
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-<h1 id="youtube-description-scharf-insecticide-moa">YouTube Description — Scharf, Insecticide MOA<a class="headerlink" href="#youtube-description-scharf-insecticide-moa" title="Permanent link">&para;</a></h1>
-<blockquote>
-<p><strong>Placeholder</strong> — Paste your Stage 3 pipeline output here.</p>
-</blockquote>
-<hr />
-<p><em>Processed for UGA Center for Urban Agriculture / GTBOP Archives</em></p>
+<p>Principles of Insecticide Mode of Action | Dr. Michael Scharf | GTBOP Structural Pest Control Webinar Series</p>
+<p>Dr. Michael Scharf of Purdue University presents a comprehensive overview of insecticide classification and mode of action for pest management professionals. Scharf covers insect physiology fundamentals, the key-and-lock relationship between insecticides and target sites, and nine insecticide classifications — five neurotoxic and four non-neurotoxic. The presentation concludes with practical factors affecting performance including formulations, pest behavior, sanitation, and resistance management. Q&amp;A moderated by Dr. Dan Suiter.</p>
+<p>Presented: October 18, 2017
+Series: Getting the Best of Pests — Structural Pest Control Webinar Series
+Host: UGA Center for Urban Agriculture
+CEU Credits: GA — 2 HPC (Cat 35)</p>
+<p>TIMESTAMPS
+0:00 Introduction and Speaker Credentials
+1:45 Why Understanding Mode of Action Matters
+6:03 Presentation Outline
+7:13 Additional Resources — PCT Article and UGA Publication
+8:26 Insect Physiology Overview — Nervous System, Cuticle, Gut, Trachea, Muscles
+14:02 Insecticide Classification Basics — Chemical Structure
+16:01 Target Site and Mode of Action — Key and Lock Analogy
+17:51 Four Basic Modes of Action — Stimulation, Blockage, Modulation, Inhibition
+19:41 The LD50 Concept and Mammalian Safety
+22:46 Overview of Neurotoxic and Non-Neurotoxic Classifications
+23:36 The Insect Nervous System — Neurons, Synapses, Neurotransmitters
+26:45 Neurophysiology Demonstration — Fipronil and Nerve Excitation
+28:40 Nervous System Target Sites — Roadmap of Ion Channels and Receptors
+32:24 Sodium Channel Insecticides — Pyrethroids, Indoxacarb, Metaflumizone
+34:12 Chloride Channel Insecticides — Fipronil, Isoxazolines, Abamectin
+36:20 Acetylcholine Receptor Insecticides — Nicotinoids, Sulfoximines, Spinosyns
+37:28 Acetylcholinesterase Inhibitors — Organophosphates and Carbamates
+38:04 Combination Products — Nicotinoid-Pyrethroid Potentiation
+39:07 Non-Neurotoxic Insecticides Overview
+40:02 Muscular Calcium Channel Agents — Diamides
+41:42 Insect Growth Regulators — JH Analogs and Chitin Synthesis Inhibitors
+45:18 Inhibitors of Energy Production — Hydramethylnon, Chlorfenapyr, Fumigants
+46:56 Cuticle Dehydrating Dusts — Silica Gel and Diatomaceous Earth
+48:15 Factors Affecting Insecticide Efficacy
+48:46 Stability, Persistence, and Formulations
+51:02 Pest Behavior — Secondary and Tertiary Kill, Trophallaxis
+53:04 Sanitation and IPM
+54:19 Resistance Management — Rotation Strategies
+56:30 Summary Points
+57:44 Additional Resources
+57:53 Q&amp;A — Combination Product Resistance
+59:53 Q&amp;A — Flow of New Active Ingredients to Market
+1:01:08 Q&amp;A — Chlorantraniliprole and Non-Target Invertebrates
+1:01:40 Q&amp;A — IRAC Classification System
+1:02:38 Q&amp;A — Nicotinoids vs. Neonicotinoids
+1:03:43 Q&amp;A — Oral vs. Dermal Toxicity Routes
+1:04:43 Q&amp;A — Repellent vs. Non-Repellent Insecticides
+1:05:32 Q&amp;A — Essential Oils and 25B Exempt Products</p>
+<p>FREQUENTLY ASKED QUESTIONS</p>
+<p>Q: What are the four basic insecticide modes of action?
+A: All insecticides disrupt target sites through stimulation, blockage, modulation, or inhibition. Understanding these four mechanisms provides a framework for classifying any product a professional might encounter.</p>
+<p>Q: Why are diamide insecticides considered especially safe for mammals?
+A: Diamides target insect-specific muscular calcium channels. Their mammalian toxicity is so low that the EPA initially required no signal word, though manufacturers voluntarily adopted a "caution" label.</p>
+<p>Q: Why is resistance a major concern in cockroach management?
+A: Research has documented cockroaches surviving on bait as their sole food source for a month. Even combination products face dual resistance. Rotate active ingredients every three months or monthly.</p>
+<p>Q: How does the IRAC help pest management professionals?
+A: The Insecticide Resistance Action Committee classifies active ingredients by mode of action, helping professionals plan rotations between different target site groups rather than simply switching trade names.</p>
+<p>Q: What is the difference between repellent and non-repellent insecticides?
+A: The distinction largely comes down to pyrethroids versus everything else. Pyrethroids are highly detectable to insects — like "pepper spray" — while most other actives are not nearly as detectable.</p>
+<p>RESOURCES
+• Scharf &amp; Suiter, "Insecticide Primer and Insecticide Mode of Action," PCT Magazine, 2011
+• Scharf &amp; Suiter, "Insecticide Basics for the Pest Management Professional," UGA publication
+• IRAC Mode of Action Classification Chart: https://irac-online.org</p>
+<h1 id="pestmanagement-insecticides-modeofaction-ceu-structuralpestcontrol-ipm-uga-gtbop">PestManagement #Insecticides #ModeOfAction #CEU #StructuralPestControl #IPM #UGA #GTBOP<a class="headerlink" href="#pestmanagement-insecticides-modeofaction-ceu-structuralpestcontrol-ipm-uga-gtbop" title="Permanent link">&para;</a></h1>