SRT Transcript Correction Summary

File: Principles of Insecticide Mode of Action — Mike Scharf

Date Corrected: February 10, 2026 Webinar Date: October 18, 2017 Series: Structural Pest Control Topic: Entomology — Insecticide Classification and Mode of Action Speaker: Dr. Michael Scharf, O.W. Rawlins Orkin Endowed Chair in Urban Entomology and Molecular Physiology, Department of Entomology, Purdue University, West Lafayette, IN Moderator: Dr. Dan Suiter, Extension Entomologist, University of Georgia

SOURCE VERIFICATION

  • Original blocks: 742
  • Corrected blocks: 742 ✓ MATCH CONFIRMED
  • Time range: 00:00:00,020 to 01:07:06,220
  • Runtime: ~67 minutes
  • File reading: COMPLETE ✓
  • Coverage proof:
    • Early [~1:45]: Speaker states overarching goal to improve general knowledge of how insecticides work; discusses nervous system targeting vs. insect growth regulators
    • Middle [~40:00]: Discusses muscular calcium channels and diamide insecticides (chlorantraniliprole, cyantraniliprole); notes EPA initially required no signal word due to low mammalian toxicity
    • Late [~55:00]: Identifies resistance as probably the #1 cause of callbacks in cockroach accounts; cockroaches observed surviving on bait as sole food source for a month; recommends rotating active ingredients every 3 months or monthly

Corrections Applied

Proper Nouns — Speaker Names

  • "Dr. Sharf" → "Dr. Scharf" (Line 23)
  • "Dan Suter" → "Dan Suiter" (Line 311)
  • "Dave Oy" → "Dave Oi" (Line 2243) — Confirmed via webinar announcement: Dr. David Oi, USDA-ARS, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, FL; presented "Fire Ants and Crazy Ants" in the same session

Chemical/Product Names

  • "chlorenterniliprol" → "chlorantraniliprole" (Line 559)
  • "terniliprol" → "traniliprole" (Line 563 — continuation of "cyantraniliprole" split across blocks 140–141)
  • "Metaflumazone" → "metaflumizone" (Line 1431)
  • "Furilander and Sarlander" → "fluralaner and sarolaner" (Line 1499)
  • "sulfoxyms or sulfoxifluor" → "sulfoximines or sulfoxaflor" (Line 1583)
  • "spinosid" → "spinosad" (Line 1595)
  • "chlorantraniliprol" → "chlorantraniliprole" (Line 1747)
  • "cyan triniliprol" → "cyantraniliprole" (Line 1747)
  • "pyroprosythin" → "pyriproxyfen" (Line 1883)
  • "hydromethyl non" → "hydramethylnon" (Line 1951)
  • "chlorphenipir" → "chlorfenapyr" (Line 1959)
  • "sulfurofluoride" → "sulfuryl fluoride" (Line 1967)
  • "disodium octoborate" → "disodium octaborate" (Line 1971)
  • "chlorthenopyr" → "chlorfenapyr" (Line 2387)
  • "chlorantrinoliprol" → "chlorantraniliprole" (Line 2691)
  • "Amidocloprid" → "imidacloprid" (Line 2771)

Technical Terms

  • "semi-carbazone" → "semicarbazone" (Line 1435 — IRAC chemical subclass name)
  • "spinosins" → "spinosyns" (Line 1347 — IRAC Group 5 class name)
  • "aloe grooming" → "allogrooming" (Line 2247)
  • "the nicotines target" → "the nicotinoids target" (Line 1663 — speaker consistently uses "nicotinoids" elsewhere; Whisper truncated the word)
  • "Pubigants" → "Fumigants" (Line 1967)
  • "acetylcholinesterase, which is a neurotransmitter" → "acetylcholine, which is a neurotransmitter" (Line 1287 — acetylcholinesterase is an enzyme, not a neurotransmitter; the speaker is clearly describing acetylcholine crossing the synapse to bind its receptor; Whisper appended "-esterase" to "acetylcholine")

Grammar

  • "Dr. Thank you very much Dan." → "Thank you very much, Dan." (Line 43 — "Dr." is a Whisper artifact from the end of the moderator's introduction bleeding into the speaker's first line; comma added after "Dan")

Flagged for Verification

  • None remaining. Line 1207 ("need this acetylcholinesterase enzyme") was reviewed against audio and confirmed as accurate speech. Speaker is casually listing target sites from a slide; phrasing is informal but intelligible and left as-is per the principle of maintaining natural speech patterns.

Notes

Speaker Not in Reference Roster

Dr. Michael Scharf (Purdue University) is not currently listed in the GTBOP Common Speakers reference. Recommend adding:

Name Affiliation
Dr. Michael Scharf Purdue University, Urban Entomology

Additional Speaker Confirmed for Roster

Dr. David Oi is confirmed via webinar announcement as a GTBOP presenter but is not currently in the Common Speakers reference. Recommend adding:

Name Affiliation
Dr. David Oi USDA-ARS, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, FL

Nicotinoid vs. Neonicotinoid Terminology

The speaker intentionally uses "nicotinoids" (not "neonicotinoids") throughout most of the presentation. In the Q&A section (~01:02:46), he and Dr. Suiter discuss the distinction: nicotinoids structurally resemble nicotine, while neonicotinoids have evolved further structurally but still target the acetylcholine receptor. This is the speaker's deliberate classification framework and has not been altered.

Webinar Date Confirmation

Date confirmed as October 18, 2017 via original program announcement email from Tami Adams Boyle. The event ran 7:00–10:00 AM EDT as part of the Structural Pest Control Webinar Series. Dr. Scharf's presentation "Principles of Insecticide Mode of Action" was paired with Dr. David Oi's "Fire Ants and Crazy Ants."

SRT Format Compliance

✅ All timestamps preserved exactly as original ✅ All sequence numbers maintained (1–742) ✅ Blank lines between segments preserved ✅ Maximum 2 lines per subtitle segment maintained ✅ No segments merged or split ✅ Block count: 742 original = 742 corrected ✓ ✅ Line count: 2,968 original = 2,968 corrected ✓

Total Corrections: 24 individual corrections across 24 lines Flagged for Verification: 0 items (1 resolved via audio review) Processing: Complete file (742 subtitle blocks, 2,968 lines)