Haematophagous
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Identification of blood meal sources of Lutzomyia longipalpis using polymerase chain reaction-restriction fragment length polymorphism analysis of the cytochrome B gene
An analysis of the dietary content of haematophagous insects can provide important information about the transmission networks of certain zoonoses. The present study evaluated the potential of polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis of the mitochondrial cytochrome B (cytb) gene to differentiate between vertebrat
Mem. Inst. Oswaldo Cruz. Publicado em: 07/05/2014
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2. Demographic fitness of Belminus ferroae (Hemiptera: Triatominae) on three different hosts under laboratory conditions
Triatominae are widely recognised for their role as vectors of Trypanosoma cruzi. One of the main biological characteristics of this subfamily is their obligate haematophagous condition. However, previous studies on Belminus herreri and Belminus ferroae suggested that cockroaches are their principal hosts in domiciles. Due to this peculiar behaviour, the aim
Mem. Inst. Oswaldo Cruz. Publicado em: 2013-11
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3. Approaches towards tick and tick-borne diseases control
Ticks are obligate haematophagous ectoparasites of wild and domestic animals as well as humans, considered to be second worldwide to mosquitoes as vectors of human diseases. Tick-borne diseases are responsible worldwide for great economic losses in terms of mortality and morbidity of livestock animals. This review concerns to the different tick and tick-para
Rev. Soc. Bras. Med. Trop.. Publicado em: 02/04/2013
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4. Circadian rhythms in insect disease vectors
Organisms from bacteria to humans have evolved under predictable daily environmental cycles owing to the Earth’s rotation. This strong selection pressure has generated endogenous circadian clocks that regulate many aspects of behaviour, physiology and metabolism, anticipating and synchronising internal time-keeping to changes in the cyclical environment. I
Mem. Inst. Oswaldo Cruz. Publicado em: 2013
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5. Behavioural biology of Chagas disease vectors
Many arthropod species have adopted vertebrate blood as their main food source. Blood is rich in nutrients and, except for the presence of parasites, sterile. However, this food source is not freely available, nor is obtaining it devoid of risk. It circulates inside vessels hidden underneath the skin of mobile hosts that are able to defend themselves and eve
Mem. Inst. Oswaldo Cruz. Publicado em: 2013
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6. Pharmacological action of tick saliva upon haemostasis and the neutralization ability of sera from repeatedly infested hosts
Ticks are blood-feeding arthropods widely distributed in the world and vectors of several diseases. As haematophagy demands evasion strategies and repeatedly infested hosts develop protective immune responses, we investigated the mechanisms of the Rhipicephalus (Boophilus) microplus saliva anti-haemostatic activity and the possible relationship between the a
Publicado em: 2011
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7. Detecção do virus da diarréia bovina em carrapatos Rhipicephalus (boophilus) microplus alimentados em bovino persistentemente infectado
Background: Bovine viral diarrhea virus (BVDV) is one of the main agents that cause economical losses in cattle worldwide. Congenitally infected calves that are born persistently infected (PI) to BVDV are the main sources of infection to susceptible cattle. Direct contact is the most important form of transmission, but indirect contact can also spread BVDV,
Publicado em: 2011
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8. Detecção do vírus da diarreia viral bovina em carrapatos Rhipicephalus (Boophilus) microplus alimentados em bovino persistentemente infectado= Detection of bovine viral diarrhea virus in Rhipicephalus (Boophilus) microplus ticks fed on persistently infected cattle / Detection of bovine viral diarrhea virus in Rhipicephalus (Boophilus) microplus ticks fed on persistently infected cattle
Background: Bovine viral diarrhea virus (BVDV) is one of the main agents that cause economical losses in cattle worldwide. Congenitally infected calves that are born persistently infected (PI) to BVDV are the main sources of infection to susceptible cattle. Direct contact is the most important form of transmission, but indirect contact can also spread BVDV,
Publicado em: 2011
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9. Clonagem, expressão e caracterização de um inibidor de tripsina presente no mosquito Aedes aegypti / Cloning, expression and characterization of a trypsin inhibitor from Aedes aegypti mosquito.
The Aedes aegypti mosquito is the classic vector of yellow fever and dengue fever. In haematophagous insects, blood digestion is carried out by proteolitic enzymes, which can also be envolved in parasite-vector relationship. Blood feeding requires that haematophagous insects are able to inhibit host hemostatic defenses, containing inhibitors of coagulation c
Publicado em: 2010
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10. Análise proteômica das salivas dos triatomíneos Rhodnuis brethesi, Rhodnius robustus e Panstrongylus megistus, vetores da doença de Chagas
Triatomine bugs acting as vectors of Chagas‟ disease are haematophagous organisms in all of its evolvement phases. Their feeding success is greatly related to their salivary glands content. The presence of a pool of specific proteins allows this insect to access its food by counteracting host haemostatic mechanisms, such as platelet aggregation, clotti
Publicado em: 2009
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11. Caracterização de amostras do vírus da raiva, isoladas nas regiões Norte e Centro-Oeste do Brasil, com anticorpos monoclonais antilissavírus
The occurrence of rabies virus antigenic variants in North and Central West regions of Brazil was studied using 61 rabies viruses isolated from different species: 30 from domestic dogs, 20 from cattle, four from horses, two from cats, one from a human and four from unidentified species. The isolates were submitted to antigenic analyses by indirect immunofluo
Arquivo Brasileiro de Medicina Veterinária e Zootecnia. Publicado em: 2008-02
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12. Estudos biológico, imunológico e genético de amostras do vírus da raiva isoladas de morcegos no Estado do Rio de Janeiro - Sudeste, Brasil / Biological, immunological and genetic studies of rabies virus samples isolated from bats in Rio de Janeiro State - Southeast, Brazil
In the present study we analyzed the biological behavior in mice of 10 rabies virus samples isolated from haematophagous and non-haematophagous bats in Rio de Janeiro State, its genetic characterization from genes N and G, and we also studied the response of mice vaccinated with cell culture rabies vaccine, produced with the Pitman-Moore strain, after viral
Publicado em: 2008