Ticks on birds in a forest fragment of Brazilian cerrado (savanna) in the municipality of Uberlândia, State of Minas Gerais, Brazil

This is a report of ticks species, parasite prevalence and infestation intensity of birds in a forest fragment (18º 56' 57" S and 48º 12' 14" W) within the Brazilian cerrado (savanna), in the municipality of Uberlândia, State of Minas Gerais, Brazil. A total of 162 birds from 26 species were captured. One adult tick, 296 larvae and 67 nymphs were found on passerine birds. Of these, it was identified 31 larvae and 27 nymphs of Amblyomma longirostre, 17 nymphs of A. nodosum, one A. cajennense larvae and one male of Rhipicephalus sanguineus. All other ticks were identified as Amblyomma sp. larvae (n = 264) or nymphs (n = 26). Overall tick infestation intensity and prevalence were 4.32 ticks/infested bird and 52%, respectively. Sampling of host-seeking ticks on the ground within the forest during a two-year period showed only five Amblyomma sp. nymphs and one adult male of A. nodosum whereas a search for ticks on domestic animals (cattle, horses and dogs) found Rhipicephalus (Boophilus) microplus ticks. Although identification was possible in only 27% of bird ticks there seemed to be no correlation between environmental and domestic animal and bird infestation. It can be assumed that bird infestation may occur above the ground or at specific sites not sampled.

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Caracterização da população de ectoparasitos em cães de núcleos de expansão urbana de Juiz de Fora, Minas Gerais, Brasil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612008000400003 ◽

2008 ◽

Vol 17 (4) ◽

pp. 185-188 ◽

Cited By ~ 11

Author(s):

Denise F. Rodrigues ◽

Erik Daemon ◽

André Flávio S.F. Rodrigues

Keyword(s):

Rhipicephalus Sanguineus ◽

Minas Gerais ◽

Ctenocephalides Felis ◽

Boophilus Microplus ◽

Amblyomma Cajennense ◽

Tunga Penetrans

No presente trabalho caracterizou-se a população de ectoparasitos em cães de núcleo de expansão urbana de Juiz de Fora, MG. As coletas foram realizadas de julho a setembro de 2003, examinando-se 101 cães SRD (sem raça definida). Os ectoparasitos foram coletados através de inspeção visual e tátil dos animais e acondicionados em frascos com etanol 70°GL e identificados sob estereoscopia. Espécimes foram clarificados e montados para análise em microscopia fotônica. Dentre os sifonápteros, Ctenocephalides felis foi mais prevalente (64,35%) com intensidade média de 6,12 ± 5,37 sifonápteros/cão, seguido por Rhopalopsyllus lutzi (3,96%), híbrida C. felis X C. canis (1,98%), Tunga penetrans (1,98%). Aúnica espécie de fitiráptero encontrada foi Trichodectes canis (7,92%) com 1,3 ± 0,51 fitiráptero/cão. Dentre os ixodídeos, Rhipicephalus sanguineus foi a espécie mais prevalente (49,50%) com intensidade média de 6,44 ± 10,2 ixodídeos/ cão, seguido por Amblyomma cajennense (3,96%), Boophilus microplus (2,97%), A. ovale (1%) e A. aureolatum (1%). As ninfas de ixodídeos foram separadas em ninfas de Amblyomminae (58,41%) com 10,11 ± 10,09 ninfas/cão e ninfas Rhipicephalinae (24,75%) com 2,64 ± 3,25 ninfas/cão. Em 3,96 % dos cães foram encontradas larvas de ixodídeo.

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Influence of seasonality in plant bug species (Hemiptera – Heteroptera) associated with lobeira (Solanum Lycocarpum A.ST.HIL. – Solanaceae) in the Brazilian cerrado, Minas Gerais state

O Biológico ◽

10.31368/1980-6221v82a10005 ◽

2020 ◽

Vol 82 (1) ◽

pp. 1-17

Author(s):

Luciano Santana Fiuza Ferreira ◽

Paulo Sérgio Fiuza Ferreira ◽

Fagner de Souza ◽

Jocélia Grazia ◽

José Antônio Fernandes ◽

...

Keyword(s):

Minas Gerais ◽

Wild Animals ◽

Brazilian Cerrado ◽

Livestock Farming ◽

Insect Fauna ◽

True Bugs ◽

Cerrado Savanna ◽

Minas Gerais State ◽

Perennial Shrub ◽

One Year

Solanum lycocarpum A. St-Hil (wolf’s fruit or lobeira) (Solanaceae) is a perennial shrub typical of the Brazilian Cerrado (savanna), under constant cutting and burning due to anthropic activities for the development of agricultural and livestock farming. It presents therapeutic medicinal attributes for humans and wild animals primarily as an anthelmintics. Little is known about the insect fauna associated with S. lycocarpum, and no study has been conducted on the true bugs (Heteroptera) associated with it. For the study, the true bugs were sampled from ten points in the mesoregion of Triangulo Mineiro and Alto Paranaiba for one year in two seasonal periods of drought and rain. In each locality, 20 shrubs of S. lycocarpum were selected.

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Ticks on birds in a savanna (Cerrado) reserve on the outskirts of Uberlândia, Minas Gerais, Brazil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612013005000004 ◽

2013 ◽

Vol 22 (1) ◽

pp. 46-52 ◽

Cited By ~ 11

Author(s):

Jamile de Oliveira Pascoal ◽

Marcus do Prado Amorim ◽

Maria Marlene Martins ◽

Celine Melo ◽

Eurípedes Luciano da Silva Júnior ◽

...

Keyword(s):

Urban Area ◽

Tick Species ◽

Tick Infestation ◽

Rhipicephalus Sanguineus ◽

Domestic Animals ◽

Minas Gerais ◽

Boophilus Microplus ◽

Amblyomma Cajennense ◽

Mean Intensity ◽

Natural Reserve

We report tick infestations on birds, in the environment and on domestic animals in a non-forested phytophysiognomy, the savanna-like Cerradosensu stricto, in a natural reserve on the outskirts of the urban area of Uberlândia, Minas Gerais, Brazil. Overall, 238 birds within 50 species, 15 families and six orders were caught. Passeriformes were the most numerous, with 216 birds (90.75%), among which 22 had ticks (n = 31). Within this order, the prevalence of tick infestation was 10.2%, and the abundance and mean intensity were 0.14 and 1.41, respectively. Only immature ticks of the species Amblyomma nodosum were found on the birds. The tick species found both on animals (Rhipicephalus sanguineus,Rhipicephalus (Boophilus)microplus, Amblyomma cajennense andDermacentor nitens) and in the environment (Amblyomma dubitatum, Rhipicephalus(B.) microplus andAmblyomma cajennense) were as expected. This difference in tick species between the environment and birds possibly occurred because the sampling of the environment was limited to the ground. This study also highlights the importance of the diverse microenvironments used by ticks and hosts in the same area and the complex ecology of bird-tick relationships. Ecological and epidemiological aspects of the findings are discussed.

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Habitat differences affect the nuclear morphology of the erythrocytes and the hepatic melanin in Leptodactylus fuscus (Anura) in the Brazilian Cerrado savanna

Environmental Science and Pollution Research ◽

10.1007/s11356-021-14974-4 ◽

2021 ◽

Author(s):

Rhayane Alves Assis ◽

Wadson Rodrigues Rezende ◽

Cirley Gomes Araújo dos Santos ◽

Marcelino Benvindo-Souza ◽

Nathan Pereira Lima Amorim ◽

...

Keyword(s):

Nuclear Morphology ◽

Brazilian Cerrado ◽

Habitat Differences ◽

Cerrado Savanna

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Principal component analysis on the perceptions of milk producers about Rhipicephalus (Boophilus) microplus control in Minas Gerais

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612012000300009 ◽

2012 ◽

Vol 21 (3) ◽

pp. 224-231 ◽

Cited By ~ 3

Author(s):

Christiane Maria Barcellos Magalhães da Rocha ◽

Fábio Raphael Pascoti Bruhn ◽

Romário Cerqueira Leite ◽

Antônio Marcos Guimarães ◽

Ivan Barbosa Sampaio ◽

...

Keyword(s):

Principal Component Analysis ◽

Principal Component ◽

Component Analysis ◽

Production Quality ◽

Minas Gerais ◽

Boophilus Microplus ◽

Basic Knowledge ◽

Positive Correlation ◽

Perceptions And Attitudes ◽

Technological Level

Milk producers in Lavras, Passos and Divinópolis, Minas Gerais, were interviewed with the aim of evaluating their perceptions and attitudes regarding control over Rhipicephalus (Boophilus) microplus. Multivariate correlation between the variables was done by means of principal component analysis. The producers' perceptions and attitudes regarding R. (B.) microplus were similar: most of them did not have any basic knowledge of tick biology or control, and they applied acaricide products through backpack spraying, without any defined technical criteria. Some of the results obtained were: I. a negative correlation between schooling level and the frequency of spraying cattle with acaricides; II. a positive correlation between milk production, quality of equipment for acaricide application and technological level of the farm; III. farm properties with greater production and technification tended to keep the intervals between acaricide applications constant over the course of the year. After applying principal component analysis, a positive correlation was observed between schooling level, technological level of the farm and perceptions regarding R. (B.) microplus, but without any correlation with attitudes towards controlling this tick. It was concluded that higher technological level and schooling level improved the producers' perceptions relating to the biology of the tick R. (B.) microplus, but did not achieve effectiveness with regard to using controls more rationally.

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The structure of the Spiracles of the cattle tick, Boophilus microplus

Australian Journal of Zoology ◽

10.1071/zo9670941 ◽

1967 ◽

Vol 15 (5) ◽

pp. 941 ◽

Cited By ~ 16

Author(s):

HE Hinton

Keyword(s):

Electron Microscope ◽

Ambient Air ◽

Adult Tick ◽

Boophilus Microplus ◽

Ixodid Ticks ◽

Cattle Tick ◽

Serial Sections ◽

Peripheral Part ◽

Gas Exchanges ◽

Spiracular Plate

The structures of the nymphal and adult spiracles of the tick, Boophilus microplus, have been examined by means of serial sections and a stereoscan electron microscope. Contrary to the views of recent writers, the functional openings of the spiracle have been found to be holes or aeropyles in the peripheral part of the spiracular plate of the adult tick. The ostium of previous writers is shown to be the ecdysial tube, which is present only in the spiracles of adult ixodid ticks. After the nymphal-adult ecdysis, the ecdysial tube is closed. There is thus no ostium in this stage, as has been claimed by previous writers who supposed that the chief or only route for gas exchanges between the atrium of the spiracle and the ambient air was through the so-called ostium. The ecdysial process of the spiracles of ticks is shown to be basically similar to the ecdysial process of the spiracles of certain insects such as scarabaeid larvae and the larvae of some Diptera-Cyclorrhapha.

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Evaluation of Rhipicephalus (Boophilus) microplus (Acari: Ixodidae) resistance to different acaricide formulations using samples from Brazilian properties

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612016026 ◽

2016 ◽

Vol 25 (2) ◽

pp. 163-171 ◽

Cited By ~ 14

Author(s):

Leandro de Oliveira Souza Higa ◽

Marcos Valério Garcia ◽

Jacqueline Cavalcante Barros ◽

Wilson Werner Koller ◽

Renato Andreotti

Keyword(s):

Immersion Test ◽

Minas Gerais ◽

Boophilus Microplus ◽

Economic Losses ◽

Mato Grosso ◽

Main Method ◽

Espírito Santo ◽

Distrito Federal ◽

Espirito Santo ◽

Mato Grosso Do Sul

Abstract The Rhipicephalus (Boophilus) microplus tick is responsible for considerable economic losses in Brazil, causing leather damage, weight loss and reduced milk production in cattle and results in the transmission of pathogens. Currently, the main method for controlling this tick is using acaricides, but their indiscriminate use is one of the major causes of resistance dissemination. In this study, the adult immersion test (AIT) was used to evaluate resistance in ticks from 28 properties located in five different states (Mato Grosso do Sul, Mato Grosso, Ceará, São Paulo, e Minas Gerais) and the Distrito Federal (DF) of Brazil. The resistance was found in 47.64% of the repetitions demonstrating an efficacy of less than 90% in various locations throughout the country. The larvae packet test was used to evaluate samples from ten properties in four states (Mato Grosso do Sul, Mato Grosso, Minas Gerais and Espírito Santo). Spray products belonging to the main classes of acaricides, including combination formulations, were used in both types of test. New cases of resistance were found on properties within the states of Ceará, Espírito Santo and Mato Grosso, where such resistance was not previously reported.

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Two new species of Aegopsis Burmeister, 1847 (Coleoptera: Scarabaeidae: Dynastinae) from the central Brazilian Cerrado

Zootaxa ◽

10.11646/zootaxa.4526.2.4 ◽

2018 ◽

Vol 4526 (2) ◽

pp. 175

Author(s):

RAFAEL SOBRAL ◽

PASCHOAL C. GROSSI ◽

JOSÉ W. DE MORAIS

Keyword(s):

New Species ◽

Minas Gerais ◽

Brazilian Cerrado ◽

Distribution Map ◽

Mato Grosso ◽

Male And Female ◽

Two New Species

Two new species of Aegopsis Burmeister, 1847 (Coleoptera: Scarabaeidae: Dynastinae: Agaocephalini), Aegopsis diceratops Sobral & Grossi new species and Aegopsis vazdemelloi Sobral & Grossi new species, are described and illustrated based on specimens collected in Cerrado habitat in the Brazilian states of Minas Gerais and Mato Grosso. The new species are similar to A. bolboceridus (Thomson, 1860). A redescription of A. bolboceridus is provided along with remarks comparing characters among these three species. A distribution map and a male and female key to the species in the genus are provided.

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Brown dog tick Rhipicephalus sanguineus parasitizing the bird Coereba flaveola in the Brazilian cerrado

Ciência Rural ◽

10.1590/s0103-84782008000200041 ◽

2008 ◽

Vol 38 (2) ◽

pp. 543-545 ◽

Cited By ~ 11

Author(s):

Matias Pablo Juan Szabó ◽

Graziela Virginia Tolesano Pascoli ◽

Oswaldo Marçal Júnior ◽

Alexandre Gabriel Franchin ◽

Khelma Torga

Keyword(s):

Tick Species ◽

Bird Species ◽

Rhipicephalus Sanguineus ◽

Brazilian Cerrado ◽

Male Adult ◽

Unknown Route ◽

Brown Dog Tick ◽

Dog Tick ◽

Coereba Flaveola

During a survey for ectoparasites on birds in a small reserve of the Brazilian cerrado (savannah) a male adult Rhipicephalus sanguineus tick was found attached to the eyelid of the bird Coereba flaveola. Both tick and bird are presently common in Brazil, however, to best of our knowledge, the association of this tick species with this bird species has not been reported before. This observation may be an accidental finding but might also be an unknown route for the dissemination of the tick. The species R. sanguineus was introduced in the country with the colonization and should be considered a research target for the surveillance of tick-borne diseases.

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