Cited by 39Insect Pest Control StrategiesDermatological diseases and infestationsInsect Resistance and Genetics

Mode of Action of Lufenuron on Larval Cat Fleas (Siphonaptera: Pulicidae)

Dean, Susan R., Meola, Roger W., Meola, Shirlee M., Sittertz-Bhatkar, Helga, Schenker, Rudolf·1998·Journal of Medical Entomology

Abstract

Adult cat fleas, Ctenocephalides felis (Bouché), were fed suboptimal in vitro concentrations of lufenuron in blood to allow hatching of flea larvae for cytological study. At concentrations of 0.125, 0.25, and 0.5 ppm, larval hatch was 64, 15, and 4%, respectively. Larvae hatching from eggs laid by adults fed lufenuron at concentrations of 0.025, 0.08, or 0.125 ppm did not differ significantly from the control. However, many larvae from the 0.08-ppm group and higher concentrations died during the 1st instar. Examination of these larvae revealed that they were dying from desiccation caused by bleeding from microscopic lesions in the cuticle or the inability to complete the molt to the next instar. Electron micrographs showed that lufenuron often disrupted formation of the endocuticle resulting in the deposition of an amorphous mass of randomly oriented chitin microfibrils. Other larvae formed normal endocuticle but were unable to digest the old endocuticle or produce new procuticle after apolysis. Failure of larvae to digest old cuticle or form new cuticle was caused by degeneration of the epidermal cells needed for the synthesis of molting fluid and chitin.

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Crossref · 10.1093/jmedent/35.5.720

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  • Lufenuron provides flea control on the animal and in the environment because female fleas biting treated animals will generate eggs from which no larvae will hatch and juveniles feeding on pre-digested blood in the environment are unable to moult to the next stage.

    “This molecule provides flea control on the animal and in the environment because female fleas biting treated animals will generate eggs from which no larvae will hatch and juveniles feeding on pre-digested blood in the environment are unable to moult to the next stage [125,127,128].”

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Authors
Dean, S. R., Meola, R. W., Meola, S. M., Sittertz-Bhatkar, H., & Schenker, R.
Affiliations
  • Texas A&M University (US)
  • Agricultural Research Service (US)
  • Novartis (Switzerland) (CH)
Venue
Journal of Medical Entomology
Published
1998-09-01
Volume
35
Issue
5
Pages
720-724
ISSN
  • 0022-2585 (ISSN-L)
  • 1938-2928
OpenAlex
W2042490073
Cited by
38
References
0
Citations by year
2025: 1 · 2023: 1 · 2021: 1 · 2020: 1 · 2019: 2 · 2018: 1 · 2017: 3 · 2013: 1 · 2012: 2
FWCI
2.91
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Medical Entomology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Insect Pest Control Strategies
  • Health Sciences › Medicine › Infectious Diseases › Dermatological diseases and infestations
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Insect Resistance and Genetics
Keywords
lufenuron, Ctenocephalides felis, flea larvae, larval development, molting, cuticle formation, endocuticle, chitin microfibrils, insect growth regulators, mechanism of action
MeSH terms
Animals, Benzamides, Cat Diseases, Cats, Female, Siphonaptera, Fluorocarbons, Larva, Myiasis, Oviposition

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