The prevalence of <i>Stephanofilaria</i> sp. in buffalo fly, <i>Haematobia irritans exigua</i>, in Central Queensland

Shaw, Sarah A.; Sutherland, I.A.

doi:10.1111/j.1440-6055.2006.00545.x

Cited by 16 publications

(14 citation statements)

References 12 publications

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“…nematodes. These nematodes have been implicated in the development of buffalo fly lesions, a significant production and welfare issue in north-Australian cattle [64]. Stephanofilaria has an extrinsic incubation period of up to 3 weeks in Haematobia spp.…”

Section: Discussionmentioning

confidence: 99%

Transinfection of buffalo flies (Haematobia irritans exigua) with Wolbachia and effect on host biology

et al. 2020

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Background: Buffalo flies (Haematobia irritans exigua) (BF) and closely related horn flies (Haematobia irritans irritans) (HF) are invasive haematophagous parasites with significant economic and welfare impacts on cattle production. Wolbachia are intracellular bacteria found widely in insects and currently of much interest for use in novel strategies for the area wide control of insect pests and insect-vectored diseases. In this paper, we report the transinfection of BF towards the development of area-wide controls. Methods: Three stages of BF; embryos, pupae and adult female flies, were injected with different Wolbachia strains (wAlbB, wMel and wMelPop). The success of transinfection and infection dynamics was compared by real-time PCR and FISH and fitness effects were assessed in transinfected flies. Results: BF eggs were not easily injected because of their tough outer chorion and embryos were frequently damaged with less than 1% hatch rate of microinjected eggs. No Wolbachia infection was recorded in flies successfully reared from injected eggs. Adult and pupal injection resulted in higher survival rates and somatic and germinal tissue infections, with transmission to the succeeding generations on some occasions. Investigations of infection dynamics in flies from injected pupae confirmed that Wolbachia were actively multiplying in somatic tissues. Ovarian infections were confirmed with wMel and wMelPop in a number of instances, though not with wAlbB. Measurement of fitness traits indicated reduced longevity, decreased and delayed adult emergence, and reduced fecundity in Wolbachiainfected flies compared to mock-injected flies. Effects varied with the Wolbachia strain injected with most marked changes seen in the wMelPop-injected flies and least severe effects seen with wAlbB. Conclusions: Adult and pupal injection were the most suitable methods for transinfecting BF and all three strains of Wolbachia successfully replicated in somatic tissues. The Wolbachia-induced fitness effects seen in transinfected BF suggest potential for use of the wMel or wMelPop strains in Wolbachia-based biocontrol programmes for BF.

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Section: Discussionmentioning

confidence: 99%

Transinfection of buffalo flies (Haematobia irritans exigua) with Wolbachia and effect on host biology

et al. 2020

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“…These species breed outside feedlots and are attracted to the feedlot by the presence of animals, feed and dung (Hughes 1981). Buffalo fly, Haematobia exigua de Meijere (Diptera: Muscidae), was not captured in any traps, although it is the most common fly on pastured cattle in Queensland (Shaw & Sutherland 2006). A few H. exigua were observed on cattle in the Queensland feedlots, but they had undoubtedly dispersed from nearby pastured cattle.…”

Section: Discussionmentioning

confidence: 99%

Temporal and spatial trends in adult nuisance fly populations at Australian cattle feedlots

Urech

Bright

Green

et al. 2011

Australian Journal of Entomology

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A comprehensive trapping program to determine the species composition, seasonality and distribution of adult nuisance fly populations at a southern Queensland feedlot was conducted from 2001 to 2003. Short-term information on nuisance fly populations was also collected from two feedlots located in other climatic regions. Twenty-five species of Diptera were identified. The more commonly trapped species were the house fly, Musca domestica L. (Muscidae) (38%), the hairy maggot blowfly, Chrysomya rufifacies (Macquart) (Calliphoridae) (27%) and the bush fly, Musca vetustissima Walker (Muscidae) (15%). Seasonal effects were the major determinant of fly populations. All commonly trapped fly species had low abundance during the coldest winter months, July and August. Musca domestica had one annual, broad peak in abundance starting in spring and extending over about 8 or 9 months. Musca vetustissima had a major abundance peak in October/November and a smaller peak around April. Stomoxys calcitrans (L.) (stable fly) (Muscidae) showed two annual peaks in abundance, with the major peak in May. Chrysomya spp. were most abundant during spring, summer and autumn, whereas the highest numbers of Calliphora augur (F.) (blue-bodied blowfly) (Calliphoridae) were trapped in winter.The sites within the feedlot with the highest catches of M. domestica were the feed mill, cattle pens and the hospital area and of S. calcitrans the manure piles, silage pits and the feed mill. The lowest catches of M. domestica and S. calcitrans were obtained in the traps situated a few kilometres outside the feedlot. In contrast, M. vetustissima and blowfly catches were higher in outside traps and traps near the manure piles than any other feedlot site.There was a correlation between the animals' number of fly avoidance movements and M. domestica catches and between the number of leg stomps and stable fly catches, respectively.

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“…The horn fly is a vector for the filarial nematode, Stephanofilaria stilesi (Filaroidea: Filariidae: Stephanofilariinae) in the U.S.A. and Canada (Watrelot‐Virieux & Pin, 2006), as is the buffalo fly in Australia (Shaw & Sutherland, 2006). Furthermore, the horn fly has been reported to act as a porter for eggs of the human bot fly, Dermatobia hominis (Diptera: Cuterebridae) (Leite et al , 1998).…”

Section: Economic Impactmentioning

confidence: 99%

Insecticide resistance in the horn fly: alternative control strategies

Oyarzún

Quiróz

Birkett

2008

Medical Vet Entomology

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. The horn fly, Haematobia irritans (Linnaeus 1758) (Diptera: Muscidae) is one of the most widespread and economically important pests of cattle. Although insecticides have been used for fly control, success has been limited because of the development of insecticide resistance in all countries where the horn fly is found. This problem, along with public pressure for insecticide-free food and the prohibitive cost of developing new classes of compounds, has driven the investigation of alternative control methods that minimize or avoid the use of insecticides. This review provides details of the economic impact of horn flies, existing insecticides used for horn fly control and resistance mechanisms. Current research on new methods of horn fly control based on resistant cattle selection, semiochemicals, biological control and vaccines is also discussed.

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The prevalence of Stephanofilaria sp. in buffalo fly, Haematobia irritans exigua, in Central Queensland

Cited by 16 publications

References 12 publications

Transinfection of buffalo flies (Haematobia irritans exigua) with Wolbachia and effect on host biology

Transinfection of buffalo flies (Haematobia irritans exigua) with Wolbachia and effect on host biology

Temporal and spatial trends in adult nuisance fly populations at Australian cattle feedlots

Insecticide resistance in the horn fly: alternative control strategies

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