Larvicidal efficacy of nitenpyram on the treatment of myiasis caused by Cochliomyia hominivorax (Diptera: Calliphoridae) in dogs

Veterinary Parasitology
Thaís R CorreiaFrancisco A Ribeiro

Abstract

The purpose of our study was to evaluate the larvicidal efficacy of nitenpyram for the treatment of screwworm myiasis caused by Cochliomyia hominivorax in naturally infested dogs. Seven Beagle dogs presenting with myiasis were treated with nitenpyram twice at an interval of 6 h. The animals received dosages between 1.43 and 4.42 mg/kg body weight of nitenpyram in each given treatment. The criteria used to determine the drug efficacy were larval expulsion and fall. These were quantified at 15 min intervals within the first hour followed by 2, 3, 4, 6, and 18 h post-treatment. The highest larval expulsion happened between 1 and 2 h post-treatment. The spontaneous larval expulsion percentages were 86% and 94.11% for 6 and 18 h after the first treatment, respectively. Larvae were expelled until 18 h post-treatment. After this period the remaining dead larvae were mechanically removed. Nitenpyram showed 100% efficacy on the treatment of myiasis by C. hominivorax in naturally infested dogs.

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Citations

Jan 16, 2014·Parasites & Vectors·Filipe Dantas-Torres, Domenico Otranto
Apr 10, 2013·Parasites & Vectors·Vincent ObandaSamer Alasaad
Jul 24, 2015·Ecotoxicology and Environmental Safety·Saihong YanJun Wang
Mar 23, 2017·Tropical Medicine & International Health : TM & IH·Sonia Ares Gomez, Albert Picado
Aug 2, 2018·Veterinary Dermatology·Hock Siew HanYin Yin Ng
Sep 5, 2019·Revista brasileira de parasitologia veterinária = Brazilian journal of veterinary parasitology : Órgão Oficial do Colégio Brasileiro de Parasitologia Veterinária·Livio Martins Costa-JúniorAntonio Thadeu Medeiros Barros
Jan 1, 2012·Insects·Thiago Mastrangelo, John B Welch
Sep 18, 2020·International Journal of Environmental Research and Public Health·Carlos Brisola MarcondesGiovanni Benelli
May 15, 2021·Journal of Feline Medicine and Surgery·Brittany N SchlesenerEric C Ledbetter
Nov 24, 2019·Veterinary Parasitology·Priscila Cardim de OliveiraFabio Barbour Scott

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