Field efficacy of the insect growth regulator dicyclanil for flystrike prevention on lambs

Schmid, H.R.; Tulder, G. van; Junquera, P.

doi:10.1016/s0304-4017(99)00139-9

Cited by 23 publications

(9 citation statements)

References 10 publications

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“…Since the doses were based on body surface area, the small lambs received a larger dose (in mg/kg) than the larger animals. The results obtained in the present study are comparable with those obtained in other clinical studies with the same formulation of dicyclanil at the same dose rates on lambs (Schmid and others 1999) and on larger adult sheep (Bowen and others 1999). They all confirm the appropriateness of the doses used to provide adequate fly strike protection for small and large animals.…”

Section: Discussionsupporting

confidence: 91%

Prevention of blowfly strike on lambs with the insect growth regulator dicyclanil

Lonsdale

Schmid

Junquera³

2000

Veterinary Record

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In three multicentered field trials run during 1995 to 1997, involving a total of 12,928 lambs, the preventive effects on blowfly strike of a ready-to-use 5 per cent dicyclanil pour-on formulation and of a ready-to-use 6 per cent cyromazine pour-on formulation were compared with untreated controls for periods of up to 22 weeks. Their efficacy was assessed by calculating the consolidated cumulative strike rate for each treatment group and the consolidated percentage reduction of flystrike achieved by the two formulations. The consolidated cumulative strike rate for all three years together reached 29.2 per cent for the untreated control lambs at week 22, 2.8 per cent for the dicyclanil-treated lambs at week 22, and 6.9 per cent for the cyromazine-treated lambs at week 20. The consolidated cumulative percentage reduction of blowfly strike remained above 89 per cent for the dicyclanil-treated lambs. For the cyromazine-treated lambs the consolidated cumulative percentage reduction of blowfly strike reached 90 per cent during weeks 9 to 10, and 80 per cent during weeks 11 to 12.

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Section: Discussionsupporting

confidence: 91%

Prevention of blowfly strike on lambs with the insect growth regulator dicyclanil

Lonsdale

Schmid

Junquera³

2000

Veterinary Record

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“…In addition, ubiquitous OP resistance in larvae was shown to cause lowlevel cross-resistance to diflubenzuron, a benzoylurea-type insecticide of the benzamide class (Kotze et al, 1997). The introduction of dicyclanil, a chemical with a similar mode of action to cyromazine, followed and had a 10-fold higher efficacy than cyromazine and diflubenzuron, and provided season-long flystrike prevention (Schmid et al, 1999). Dicyclanil continues to be used as a successful preventative compound against flystrike, even partially cyromazine-resistant individuals, which can be controlled using a thorough application of the recommended therapeutic doses of this and cyromazine products (Levot et al, 2014;Sandeman et al, 2014).…”

Section: Treatment and Insecticide Resistance Problemsmentioning

confidence: 99%

A blow to the fly — Lucilia cuprina draft genome and transcriptome to support advances in biology and biotechnology

Anstead

Batterham

Korhonen

et al. 2016

Biotechnology Advances

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The blow fly, Lucilia cuprina (Wiedemann, 1830) is a parasitic insect of major global economic importance. Maggots of this fly parasitize the skin of animal hosts, feed on excretions and tissues, and cause severe disease (flystrike or myiasis). Although there has been considerable research on L. cuprina over the years, little is understood about the molecular biology, biochemistry and genetics of this parasitic fly, as well as its relationship with its hosts and the disease that it causes. This situation might change with the recent report of the draft genome and transcriptome of this blow fly, which has given new and global insights into its biology, interactions with the host animal and aspects of insecticide resistance at the molecular level. This genomic resource will likely enable many fundamental and applied research areas in the future. The present article gives a background on L. cuprina and myiasis, a brief account of past and current treatment, prevention and control approaches, and provides a perspective on the impact that the L. cuprina genome should have on future research of this and related parasitic flies, and the design of new and improved interventions for myiasis.

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“…Cyromazine has been shown to provide a 90 per cent reduction in strike in lambs for up to nine weeks and an 80 per cent reduction between 10 to 12 weeks in England (Lonsdale and others 2000), although it is becoming less available in the UK. Dicyclanil, has in vitro activity against dipteran larvae more than 10‐fold higher than cyromazine, and can provide substantially longer protection against flystrike, depending on its formulation (Graf 1993, Schmid and others 1999) and due, in part, to the oily vehicle that binds it to wool grease. A 100 per cent reduction in blowfly strike for up to 16 weeks after application was recorded in the Netherlands after sheep were treated with dicyclanil (Schmid and others 1999); even 22 weeks after application, the number of strikes in a dicyclanil‐treated flock were reduced by 89 per cent (Lonsdale and others 2000).…”

Section: Strike Controlmentioning

confidence: 99%

“…Dicyclanil, has in vitro activity against dipteran larvae more than 10‐fold higher than cyromazine, and can provide substantially longer protection against flystrike, depending on its formulation (Graf 1993, Schmid and others 1999) and due, in part, to the oily vehicle that binds it to wool grease. A 100 per cent reduction in blowfly strike for up to 16 weeks after application was recorded in the Netherlands after sheep were treated with dicyclanil (Schmid and others 1999); even 22 weeks after application, the number of strikes in a dicyclanil‐treated flock were reduced by 89 per cent (Lonsdale and others 2000). Anecdotally, farmers complain that these products do not give the duration of protection in the field, but generally in such cases pharmacovigilance investigations indicate poor application of product and/or periods of particularly prolonged summer rain.…”

Section: Strike Controlmentioning

confidence: 99%

Blowfly strike: biology, epidemiology and control

Wall¹,

Lovatt²

2015

In Practice

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Blowfly strike is one of the most unpleasant yet familiar annual problems that sheep farmers need to deal with. Strike causes significant welfare problems for sheep and costs for farmers in terms of both time and money. The development of good prevention strategies is an important opportunity for sheep veterinarians to engage with their clients; this requires a clear understanding of the scope of the problem and the challenge it presents. This article explains the biology of the blowfly, the risk factors and how to control strike. It also considers the costs involved in managing this problem.

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Field efficacy of the insect growth regulator dicyclanil for flystrike prevention on lambs

Cited by 23 publications

References 10 publications

Prevention of blowfly strike on lambs with the insect growth regulator dicyclanil

Prevention of blowfly strike on lambs with the insect growth regulator dicyclanil

A blow to the fly — Lucilia cuprina draft genome and transcriptome to support advances in biology and biotechnology

Blowfly strike: biology, epidemiology and control

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