scholarly journals The palm tree Copernicia cerifera (carnaúba) as an ecotope of Rhodnius nasutus in rural areas of the State of Piauí Northeastern Brazil

1986 ◽  
Vol 19 (4) ◽  
pp. 243-245 ◽  
Author(s):  
Artur da S. Pinto ◽  
Dalva N. da C. Bento
Keyword(s):  
Trypanosoma Cruzi ◽  
Rural Areas ◽  
The State ◽  
Northeastern Brazil ◽  
Palm Tree ◽  
Palm Trees ◽  
Triatomine Species

The C. cerifera palm tree (carnaúba) is widely distributed in the Northeastem Brazil, including the State of Piauí. This investigation revealed that R. nasutus is the ortly triatomine species captured on that palm tree, in five different localities. 78% of palm trees were infested with triatomines, and 4.0% were infected with flagellates morphologically and biologically indistinguishable from Trypanosoma cruzi. Birds, rodents and marsupials were found as major blood meai sources for R. nasutus.

scholarly journals Epidemiologic studies of chagas' disease in the urban zone of Teresina. State of Piauí, northeastern Brazil

1984 ◽  
Vol 17 (4) ◽  
pp. 199-203 ◽  
Author(s):  
Dalva N. da C. Bento ◽  
Ana Z. C. L Branco ◽  
Marise R. Freitas ◽  
Artur da S. Pinto
Keyword(s):  
Chagas Disease ◽  
Epidemiologic Studies ◽  
Northeastern Brazil ◽  
Palm Tree ◽  
Natural Focus ◽  
Predominant Species ◽  
Palm Trees ◽  
Urban Zone ◽  
Triatomine Species ◽  
Infection Index

The triatomine species Rhodnius nasutus and Triatoma pseudomaculata were captured on palm trees Orbignya martiana "babaçu ", in the urban zone of Teresina. This kind of palm tree is largely distributed in Piauí State. The predominant species was R. nasutus; the young in stars predominated. The infestation index of palm trees and the infection index of triatomines by flagellates were 96.0 ana 29.1%, respectively. Marsupiais, bats and a rodent were captured in palm trees. The flagellates found in both triatomines ana marsupiais were morphologically and biologically indistinguishable from Trypanosoma cruzi. Forty seven percent (481/1,025) of triatomines were found concentrated in six palm trees where marsupiais circulated. Of the total of 1,025 triatomines 230 (22%) were infected by flagellates and 53.0% (123/230) of these infected triatomines were present in the same six palm trees. No evidence of triatomine domiciliation or human transmission was observed in the houses in the vicinity of palm trees. The results suggest that marsupiais play an important role in the life-cycle of T. cruzi in this region. The natural focus of Chagas' disease, demonstrated in the present study could represent a potential epidemiological threat.

Trypanosoma cruzi-triatomine associations and the presence of mixed infections in single triatomine bugs in Paraná state, Brazil

2007 ◽  
Vol 52 (1) ◽  
Author(s):  
Fernanda Spitzner ◽  
Jorge Freitas ◽  
Andréa Macedo ◽  
Max Ornelas Toledo ◽  
Silvana Araújo ◽  
...  
Keyword(s):  
Trypanosoma Cruzi ◽  
Mitochondrial Gene ◽  
Reference Sample ◽  
The State ◽  
Panstrongylus Megistus ◽  
Transmission Cycle ◽  
Triatomine Bugs ◽  
Triatoma Sordida ◽  
Triatomine Species ◽  
Coii Gene

AbstractEighteen strains of Trypanosoma cruzi isolated from two species of triatomines in the state of Paraná, Brazil, were characterized molecularly using three strategies: RAPD (randomly amplified polymorphic DNA) with four primers, analysis of the D7 polymorphic region of the 24Sα rDNA, and RFLP (restriction fragment length polymorphism) of region 5′ of the mitochondrial gene COII (cytochrome oxidase subunit 2). The phenogram constructed with the RAPD data showed that only three strains isolated from Panstrongylus megistus collected in the Municipality of Arapongas were grouped together in a sub-branch. None of the other 15 strains could be clustered according to triatomine species or geographical origin. The strains were grouped with the T. cruzi I reference sample, indicating closer association with the sylvatic transmission cycle of T. cruzi in the state of Paraná. However, analyses of the rDNA and COII gene polymorphisms revealed the presence of populations from both T. cruzi I and II major lineages. In half of the analyzed triatomines, we found parasites from both lineages coinfecting the same bugs. Of these, most (6/9) were isolated from Triatoma sordida, and 3/9 from Panstrongylus megistus. These results contribute to a better comprehension of the ecoepidemiology of Chagas’ disease in Paraná, and raise questions about the role of studies of polyclonal population dynamics for controlling the transmission of T. cruzi to humans in this region.

scholarly journals Risk factors associated with seropositivity for Leishmania spp. and Trypanosoma cruzi in dogs in the state of Paraiba, Brazil

2016 ◽  
Vol 25 (1) ◽  
pp. 90-98 ◽  
Author(s):  
Annielle Regina da Fonseca Fernandes ◽  
Carla Lauise Rodrigues Menezes Pimenta ◽  
Ivana Fernandes Vidal ◽  
Gabriela Capriogli Oliveira ◽  
Raissa Saran Sartori ◽  
...  
Keyword(s):  
Risk Factors ◽  
Trypanosoma Cruzi ◽  
Fluorescent Antibody ◽  
Antibody Test ◽  
The State ◽  
Control Measures ◽  
Northeastern Brazil ◽  
Soil Cement ◽  
Canine Population ◽  
Leishmania Spp

Abstract The aim of this survey was to determine the seropositivity and risk factors forLeishmania spp. and Trypanosoma cruzi in dogs in the State of Paraíba, Northeastern Brazil. A total of 1,043 dogs were tested, and the serological diagnoses of Chagas disease (CD) and canine visceral leishmaniasis (CVL) was performed by the indirect fluorescent antibody test (IFAT). Animals that tested seropositive for both diseases (by IFAT) were further subjected to ELISA. Of the 1,043 dogs 81 (7.8%; 95% CI = 6.1-9.4%) tested seropositive for Leishmania spp., while 83 were seropositive for T. cruzi (7.9%; 95% CI = 6.3-9.6%). Simultaneous serological reactions were detected in 49 animals (4.6%; 95% CI= 3.6-6.2%). Semi-domiciled housing (OR = 2.044), free housing (OR = 4.151), and soil (OR = 3.425) and soil/cement (OR = 3.065) environmental conditions were identified as risk factors for CVL seropositivity. The risk factors identified for CD seropositivity were semi-domiciled (OR = 2.353) or free housing (OR = 3.454), and contact with bovine (OR = 2.015). This study revealed the presence of dogs in the Paraíba State seropositive for CVL and CD, suggesting the need for revisiting and intensification of disease control measures through constant monitoring of the canine population.

scholarly journals Wide distribution of Trypanosoma cruzi-infected triatomines in the State of Bahia, Brazil

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Gilmar Ribeiro ◽  
Carlos G. S. dos Santos ◽  
Fernanda Lanza ◽  
Jamylle Reis ◽  
Fernanda Vaccarezza ◽  
...  
Keyword(s):  
Spatial Analysis ◽  
Trypanosoma Cruzi ◽  
Potential Risk ◽  
Blood Meal ◽  
Species Complex ◽  
Domestic Animals ◽  
Wide Distribution ◽  
The State ◽  
Northeastern Brazil ◽  
Epidemiologic Surveillance

Abstract Background The identification of Trypanosoma cruzi and blood-meal sources in synanthropic triatomines is important to assess the potential risk of Chagas disease transmission. We identified T. cruzi infection and blood-meal sources of triatomines caught in and around houses in the state of Bahia, northeastern Brazil, and mapped the occurrence of infected triatomines that fed on humans and domestic animals. Methods Triatominae bugs were manually captured by trained agents from the Epidemiologic Surveillance team of Bahia State Health Service between 2013 and 2014. We applied conventional PCR to detect T. cruzi and blood-meal sources (dog, cat, human and bird) in a randomized sample of triatomines. We mapped triatomine distribution and analyzed vector hotspots with kernel density spatial analysis. Results In total, 5906 triatomines comprising 15 species were collected from 127 out of 417 municipalities in Bahia. The molecular analyses of 695 triatomines revealed a ~10% T. cruzi infection rate, which was highest in the T. brasiliensis species complex. Most bugs were found to have fed on birds (74.2%), and other blood-meal sources included dogs (6%), cats (0.6%) and humans (1%). Trypanosoma cruzi-infected triatomines that fed on humans were detected inside houses. Spatial analysis showed a wide distribution of T. cruzi-infected triatomines throughout Bahia; triatomines that fed on dogs, humans, and cats were observed mainly in the northeast region. Conclusions Synanthropic triatomines have a wide distribution and maintain the potential risk of T. cruzi transmission to humans and domestic animals in Bahia. Ten species were recorded inside houses, mainly Triatoma sordida, T. pseudomaculata, and the T. brasiliensis species complex. Molecular and spatial analysis are useful to reveal T. cruzi infection and blood-meal sources in synanthropic triatomines, identifying areas with ongoing threat for parasite transmission and improving entomological surveillance strategies.

Rhodnius spp. infestation in palm trees and natural infection by Trypanosoma cruzi and Trypanosoma rangeli in periurban and rural areas of state of the Rondônia, in the Brazilian Amazon.

Acta Tropica ◽  
2021 ◽  
pp. 105963
Author(s):  
Genimar Rebouças Julião ◽  
Iasmin Ferreira Pimentel ◽  
Andonai Krauze de França ◽  
Luiz Herman Soares Gil ◽  
Marlon Ferreira Simplício ◽  
...  
Keyword(s):  
Trypanosoma Cruzi ◽  
Rural Areas ◽  
Natural Infection ◽  
Brazilian Amazon ◽  
Trypanosoma Rangeli ◽  
Palm Trees

scholarly journals Peridomiciliary colonies of Triatoma vitticeps (Stal, 1859) (Hemiptera, Reduviidae, Triatominae) infected with Trypanosoma cruzi in rural areas of the state of Espírito Santo, Brazil

2005 ◽  
Vol 100 (5) ◽  
pp. 471-473 ◽  
Author(s):  
Claudiney Biral dos Santos ◽  
Adelson Luiz Ferreira ◽  
Gustavo Rocha Leite ◽  
Gabriel Eduardo Melim Ferreira ◽  
Andressa Alencastre Fuzari Rodrigues ◽  
...  
Keyword(s):  
Trypanosoma Cruzi ◽  
Rural Areas ◽  
The State ◽  
Espírito Santo ◽  
Espirito Santo

scholarly journals Animais peçonhentos do estado do Piauí: epidemiologia dos acidentes e lista de espécies de importância médica

2019 ◽  
Vol 20 (1) ◽  
pp. 1-14
Author(s):  
Ronildo Alves Benício ◽  
Leonardo Sousa Carvalho ◽  
Mariluce Gonçalves Fonseca
Keyword(s):  
Rural Areas ◽  
The State ◽  
Lower Limbs ◽  
Northeastern Brazil ◽  
Venomous Animals ◽  
High Incidence ◽  
Identification Of Species ◽  
Medical Importance ◽  
Epidemiological Profile ◽  
Epidemiological Characteristics

Cases of poisoning have increased considerably in Brazil, however for state of Piauí only two studies were carried out so far. Here, we investigated, through the notification forms, the epidemiological characteristics of cases of poisoning that occurred during 11 years in a macro-region of Picos, state of Piauí, Northeastern Brazil. Furthermore, we also check whether the species recorded in the notification forms correspond to the species that occur in the region. We recorded 1.249 cases of envenomations, being 41% caused by scorpions, 35% caused by snakes and 24% caused by spiders. Most cases (arachnids = 99%, scorpions = 93%, snakes = 52%) there was no identification of species causing the accident. Most of the victims of the accidents (66%) were male individuals between 18 and 24 years from rural areas, stung during field activities in the rainy season (January-March). The most common injury sites were the lower limbs (37%) and the majority (53%) of the accidents was the mild type. This is the first study that reports the epidemiological profile of a series of envenomations (including arachnids and snakes) during 11 years of records in the state of Piauí. Furthermore, we also present the first list of species of arachnids and snakes of medical importance to the state. Our results demonstrate that there was a high incidence of accidents by venomous animals in the Center-South region of the state, most of the records was not notified in SINAN, most records does not present the identification of the species responsible for the accident, and there are records whose species was incorrectly identified.

scholarly journals Carnaúba (Copernicia prunifera (Miller) H. E. Moore uma nova hospedeira de Raoiella indica Hirst (Acari: Tenuipalpidae)

2021 ◽  
Vol 3 ◽  
pp. ec03045
Author(s):  
Eduardo P. Sousa Neto ◽  
Izabel V. Souza ◽  
Elio C. Guzzo ◽  
José Wagner S. Melo
Keyword(s):  
Host Range ◽  
Potential Risk ◽  
Neotropical Region ◽  
Northeastern Brazil ◽  
High Population ◽  
Palm Tree ◽  
Suitable Host ◽  
Red Palm Mite ◽  
Palm Trees ◽  
Raoiella Indica

The red palm mite, Raoiella indica Hirst, 1924 (Tenuipalpidae), has been spreading rapidly and expanding its host range in the Neotropical region. Most of the hosts are palm trees (Arecaceae). In the present work, high population levels of R. indica are reported on “carnauba” [Copernicia prunifera (Miller) H. E. Moore, Arecaceae] in the states of Alagoas and Ceará, northeastern Brazil. This is the first report of R. indica causing damage and injuries on this palm tree native to Brazil in field. Our results allow us to conclude that carnauba is a suitable host for R. indica, with potential risk to its cultivation and exploitation.

Obstetrical Care by Traditional Birth Attendance in Rural Areas of the State of Ceará, Brazil

1985 ◽  
Vol 1 (4) ◽  
pp. 863-869
Author(s):  
José Galba Araújo
Keyword(s):  
Minimum Wage ◽  
Rural Areas ◽  
Living Conditions ◽  
The State ◽  
Farm Workers ◽  
Northeastern Brazil ◽  
Subsistence Farming ◽  
Obstetrical Care ◽  
Birth Attendance ◽  
Low Incomes

Ceará occupies an area of 146,817 km2 in northeastern Brazil, where the climate is tropical and there are only two seasons, rainy and dry. Frequent droughts have serious consequences for subsistence farming, resulting in precarious living conditions for the rural inhabitants. In the absence of any industry to provide employment for labor, low incomes prevail, with 90% of the population receiving incomes below the minimum wage for farm workers (9).

Trypanosoma cruzi infection in triatomines (Hemiptera: Reduviidae) from rural areas of the state of Pará, Brazil

2021 ◽  
Author(s):  
Flávia de Nazaré Leite Barros ◽  
Juliana dos Santos Cruz Vieira ◽  
Francisco Dantas Sampaio Júnior ◽  
Jaqueline dos Santos Lima ◽  
Adriana Vasconcelos Nobre ◽  
...  
Keyword(s):  
Trypanosoma Cruzi ◽  
Rural Areas ◽  
The State ◽  
Cruzi Infection
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