Dinâmica populacional da mosca-dos-chifres (Haematobia irritans) em bovinos da raça Guzerá e mestiço em Selvíria, MS

Almeida, Fabiana Alves de; Basso, Fernanda Gonçalves; Seno, Maria Conceição Zocoller; Filho, Walter Veriano Valério

doi:10.5433/1679-0359.2010v31n1p157

Cited by 7 publications

(7 citation statements)

References 8 publications

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“…These results corroborate the data from previous study conducted in the same location, which recorded peak infestation of 104 flies (ALMEIDA et al 2010). These data demonstrate that the animals in this region are not greatly infested by H. irritans.…”

Section: Resultssupporting

confidence: 83%

“…Every 14 days, the animals from each group were taken to the management corral, where they were contained so the flies on the cervico-dorsal-lumbar region could be counted (ALMEIDA et al, 2010).…”

Section: Methodsmentioning

confidence: 99%

“…In group G33, only 33.3% of the cows were treated, selecting the most infested ones; in group G100, 100% of the animals were treated; and group GC was not treated (control). Selection of the five cows in the G33 group for the ear tag treatment was based on their previous infestation history, from a study on the dynamics of horn flies that was conducted on the same farm and published by Almeida et al (2010).…”

Section: Introductionmentioning

confidence: 99%

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Efficiency of partial treatment of cattle infested with horn fly using 40% diazinon

Almeida

Alari

Seno

et al. 2013

Rev. Bras. Parasitol. Vet.

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The aim of this investigation was to evaluate the efficiency of partial treatment of animals infested with horn flies. Forty-five Guzerat cows between 4 and 7 years of age were divided into three groups (15 cows per group). The treatments were as follows: in groups G33 and G100, 33.3 and 100% of the cows were treated with one insecticide-impregnated ear tag/animal (40% diazinon), respectively, while in the group GC, the cows were not treated (control). The flies on the cervico-dorsal-lumbar region of the cows, in all three groups, were counted every 14 days. The experiment lasted from September 2006 to September 2009. Over this period, six four-month ear tag treatments, with intervals of one to two months, were conducted on both treated groups. The animals of group G33 had a higher infection than those of group G100, and the number of flies ranged from 12 to 27 (group G33) and from 3 to 11 (group G100). However, groups G33 and G100 had lower infection levels than group GC, which presented from 45 to 87 flies. Partial treatment of cattle infested with horn flies using 40% diazinon insecticide is an efficient alternative for controlling this ectoparasite.

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Section: Resultssupporting

confidence: 83%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Efficiency of partial treatment of cattle infested with horn fly using 40% diazinon

Almeida

Alari

Seno

et al. 2013

Rev. Bras. Parasitol. Vet.

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“…No estado do Mato Grosso do Sul foi constatado maiores infestações por mosca-dos-chifres em bovinos mestiços, apresentando contagem média de 125 moscas por animal. Já na raça pura, Nelore, os autores observaram contagem média de 88 moscas [1]. Resultados similares foram relatados no município de São Carlos, estado de São Paulo ambos na região sudeste do Brasil, sendo observadas menores infestações em animais da raça Nelore se comparado aos mestiços [39,40].…”

Section: Discussionunclassified

“…Resultados semelhantes foram descritos no Pantanal, indicando picos populacionais de moscas após o início e final da estação chuvosa, respectivamente de novembro a dezembro e de maio a junho [7]. Outros estudos também relataram que na época chuvosa ocorre aumento de infestação da mosca-dos-chifres em sistemas extensivos, associado ao aumento de temperatura ambiente e umidade, favorecendo o ciclo da mosca [1,16,21]. É importante conhecer a dinâmica populacional das moscas, pois essa informação permitirá estabelecer com maior precisão o programa de controle estratégico em épocas do aumento das infestações nos animais [43].…”

Section: Discussionunclassified

Control of Haematobia irritans in the Minas Gerais Semiarid

Costa

Carneiro

Bastos

et al. 2016

Acta Scientiae. Vet.

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Background:Beef cattle is considered to be one of the most important economic activities, however, it presents problems in the production chain such as the occurrence of parasites that reduce the growth, performance, productivity and may cause mortalities occasionally. The chemical control is the most used alternative to reduce ectoparasites. Nevertheless, inappropriate management of insecticides has contributed to the selection of population resistant to the products available on the market. This paper aimed to evaluate the practices of management and the application of insecticides used to control horn flies in farms of dairy cattle in the North of the state of Minas Gerais. Materials, Methods & Results:It was visited 62 rural properties, which produce milk. Semi-structured questionnaires were applied in order to obtain information on the characteristics of the properties (location, size and type of the cattle), on the knowledge about the epidemiology of the horn flies, and on the practices adopted to the control of those parasites. The practices adopted include the moment of application of the insecticides, frequency of the cattle treatment, used products, method of application, number of animals treated, and choice and substitution criteria of insecticides. The data collected were tabulated in contingency tables, and they were analyzed using the chi-square test, considering a significance of 5%. The racial composition of the cattle in the farms was mainly mixed-race of unknown origin, representing 77% of the animals evaluated. In this research, it was reported a greater incidence of horn flies infestation on adult beef herd, and 23.6% of the producers reported occurrences of infestation in the whole herd, not differing by categories. The infestation peaks of the fly occurred from November to March. It was also found a greater frequency of pyrethroid use in the region (P < 0.001), where 43.1% of the producers used associations of pyrethroid or organophosphate to control the flies, high efficiency being reported. From the properties assessed, 92% presented inadequacy in the practices of control of horn flies, for instance, the lack of using cattle manure tank, the accumulation of open waste, the lack of rotation of insecticides, which can favor the selection of resistant flies. Discussion: In this paper, it was reported 77.19% of predominance of Haematobia irritans infestation from November to March mainly in animals with a higher percentage of European or mixed-race genetics. Such results corroborate with the literature, because it was verified the influence of race and hair color in the level of infestation in the animals, although, in the same race, each individual presents different susceptibilities. Taurine beef cattle are more susceptible to infestation by horn flies than zebu cattle. Thus, the lower the proportion of zebu cattle genetics in the herd, the greater the infestation. Taurine beef cattle are more infested because shows a greater number of sebaceous glands and greater concentration of testoster...

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Potential of Macrocheles species (Acari: Mesostigmata: Macrochelidae) as control agents of harmful flies (Diptera) and biology of Macrocheles embersoni Azevedo, Castilho and Berto on Stomoxys calcitrans (L.) and Musca domestica L. (Diptera: Muscidae)

et al. 2018

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The stable fly (Stomoxys calcitrans) and horn fly (Haematobia irritans) are mainly parasites of cattle that spend the early phase of their life cycle in decaying vegetation, manure and soil, as members of a wide range of other harmful and beneficial arthropods. Predators of the family Macrochelidae are considered beneficial mites that have been considered promising biological control agents of fly eggs and larvae and of other harmful organisms. The objectives of this study were: a) to compare the predation and oviposition rates of three Macrocheles species, M. embersoni, M. muscaedomesticae and M. robustulus, on six prey species: S. calcitrans, Musca domestica , H. irritans, Bradysia matogrossensis, Rhizoglyphus echinopus and the free living nematode Rhabditella axei; b) to evaluate the life cycle of the best performing predator (M. embersoni) on the most suitable prey species at 30 ± 2°C, 95 ± 5% RH and in the dark. The three macrochelid species consumed all evaluated prey species, but M. embersoni had higher predation and daily oviposition rates on larvae of S. calcitrans (23.8 larvae consumed and laid about 4.0 eggs, respectively) than other species. Total immature development of M. embersoni was completed in at most about 1.3 days on eggs of S. calcitrans and M. domestica and 1.5 days on R. axei. Macrocheles embersoni produced most eggs (0.28-0.34 female/female/day; r m : 0.28-0.34) on those same prey. The results of this study suggest that M. embersoni is a promising biological control agent of S. calcitrans and M. domestica.

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Dinâmica populacional da mosca-dos-chifres (Haematobia irritans) em bovinos da raça Guzerá e mestiço em Selvíria, MS

Cited by 7 publications

References 8 publications

Efficiency of partial treatment of cattle infested with horn fly using 40% diazinon

Efficiency of partial treatment of cattle infested with horn fly using 40% diazinon

Control of Haematobia irritans in the Minas Gerais Semiarid

Potential of Macrocheles species (Acari: Mesostigmata: Macrochelidae) as control agents of harmful flies (Diptera) and biology of Macrocheles embersoni Azevedo, Castilho and Berto on Stomoxys calcitrans (L.) and Musca domestica L. (Diptera: Muscidae)

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