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.

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 On the possibility of autochthonous Chagas disease in Roraima, Amazon region, Brazil, 2000-2001

2005 ◽  
Vol 47 (1) ◽  
pp. 45-54 ◽  
Author(s):  
José Francisco Luitgards-Moura ◽  
José Borges-Pereira ◽  
Jane Costa ◽  
Patrícia Lago Zauza ◽  
Maria Goreti Rosa-Freitas
Keyword(s):  
Chagas Disease ◽  
Pcr Amplification ◽  
Epidemiological Survey ◽  
Amazon Region ◽  
Northeastern Brazil ◽  
Arid Zones ◽  
Serological Tests ◽  
Transmission Cycle ◽  
Triatomine Species ◽  
Panstrongylus Geniculatus

Chagas disease has been almost entirely eradicated from the arid zones in Central and Northeastern Brazil where rare or no autochthonous cases have been reported. However, in the last 10 years the disease has increasingly been registered in the Amazon Region. Aiming to investigate the possibility of the occurrence of autochthonous cycle of Chagas disease in Roraima, triatomine collections, vectorial susceptibility studies (this one to be shown elsewhere), parasitological and serological analyses were conducted in three agricultural settlement areas (Rorainópolis, Passarão Project and Ilha Community). Blood-donor candidates were also investigated. This is the first epidemiological survey on Chagas disease conducted in agricultural settlements in Roraima. Triatomine species found were Triatoma maculata, Rhodnius pictipes, Rhodnius robustus and Panstrongylus geniculatus. Trypanosoma cruzi detection analyses included xenodiagnosis, indirect immunofluorescence, indirect hemaglutination, ELISA and kinetoplast PCR amplification. Natural triatomine infection was not found in intestinal contents. Twenty-five adult settlers (1.4% out of 1821, all > 15 year-old, 20 migrants) presented anti-T. cruzi antibodies. Two migrant settlers (from Minas Gerais and Maranhão) tested positive for more than two serological tests, besides either being positive for xenodiagnosis or PCR. Results show that Chagas disease is not endemic in the areas studied. However, all elements of the transmission cycle are present, demanding for an adequate and continuous vigilance.

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.

scholarly journals Spatial Distribution of Tibraca limbativentris (Heteroptera: Pentatomidae) in Babassou Palms

2021 ◽  
Vol 9 (2) ◽  
pp. 537
Author(s):  
Elizabeth Araújo Costa ◽  
Raimunda Nonata Santos Lemos ◽  
Keneson Klay Gonçalves Machado ◽  
Gislane Da Silva Lopes ◽  
Janaina Marques Mondego ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Solar Radiation ◽  
Abiotic Factors ◽  
Gaussian Model ◽  
Spatial Arrangement ◽  
Northeastern Brazil ◽  
Palm Tree ◽  
Monthly Basis ◽  
Palm Trees ◽  
Significant Difference

The babassou plant (Attalea speciosa Mart. Ex. Spreng, Arecaceae) is an important palm tree in the state of Maranhão, northeastern Brazil. This plant is the main arboreal component in extensive geographical areas including agricultural areas. However, limited research studies exist on its role as an alternative pest host in this region. This study investigated the occurrence of Tibraca limbativentris Stal (1860) in young babassou palm trees, the effect of abiotic factors (temperature, solar radiation and rainfall) on the number of T. limbativentris adults and postures, and this insect’s spatial arrangement during the rice crop off-season. The research team inspected young babassou plants on a monthly basis in 2012 and 2013 to collect and quantify postures and adults. They collected a total of 1418 live adults, 13 dead and ten postures of T. limbativentris. There was a significant difference between the first and the other collections of live adults carried out in 2012 and 2013. Abiotic factors including rainfall, temperature and solar radiation, had no influence on the number of adults (alive and dead) and postures. The semivariogram adjusted to the Gaussian model showed that in 2013, the spatial distribution of living adults, that had an aggregate pattern, was highly dependent on the season. However, in 2012 there was a pure nugget effect. These results imply that young babassou plants are alternative T. limbativentris hosts.

scholarly journals Potential Distribution of Chagas Disease Vectors (Hemiptera, Reduviidae, Triatominae) in Colombia, Based on Ecological Niche Modeling

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Gabriel Parra-Henao ◽  
Laura C. Suárez-Escudero ◽  
Sebastián González-Caro
Keyword(s):  
Chagas Disease ◽  
Sierra Nevada ◽  
Geographic Distribution ◽  
Ecological Niche ◽  
Ecological Niche Modeling ◽  
Climatic Factors ◽  
Niche Modeling ◽  
Triatomine Species ◽  
Local Risk ◽  
And Control

Ecological niche modeling of Triatominae bugs allow us to establish the local risk of transmission of the parasiteTrypanosoma cruzi,which causes Chagas disease.This information could help to guide health authority recommendations on infection monitoring, prevention, and control. In this study, we estimated the geographic distribution of triatomine species in Colombia and identified the relationship between landscape structure and climatic factors influencing their occurrence. A total of 2451 records of 4 triatomine species (Panstrongylus geniculatus,Rhodnius pallescens,R. prolixus, andTriatoma maculata) were analyzed.The variables that provided more information to explain the ecologic niche of these vectors were related to precipitation, altitude, and temperature. We found that the species with the broadest potential geographic distribution wereP. geniculatus,R. pallescens, andR. prolixus. In general, the models predicted the highest occurrence probability of these vectors in the eastern slope of the Eastern Cordillera, the southern region of the Magdalena valley, and the Sierra Nevada of Santa Marta.

scholarly journals Emerging Chagas Disease: Trophic Network and Cycle of Transmission ofTrypanosoma cruzifrom Palm Trees in the Amazon

2001 ◽  
Vol 7 (1) ◽  
pp. 100-112 ◽  
Author(s):  
Antonio R.L. Teixeira ◽  
Pedro Sadi Monteiro ◽  
José M. Rebelo ◽  
Enrique R. Argañaraz ◽  
Daniela Vieira ◽  
...  
Keyword(s):  
Chagas Disease ◽  
Palm Trees ◽  
Trophic Network

EFFECTS OF REPLACING CEMENT BY DATE PALM TREES WASTES ON CONCRETE PERFORMANCE

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Ahmad Salah Edeen Nassef ◽  
Kalifa Hamed AlMuqbali ◽  
Sheikha Mahmood Al Naqabi
Keyword(s):  
Compressive Strength ◽  
Date Palm ◽  
Cement Content ◽  
Concrete Strength ◽  
Palm Tree ◽  
Compression Tests ◽  
Tree Leaves ◽  
Concrete Compressive Strength ◽  
Sustainable Environment ◽  
Palm Trees

This paper was studying the effects of palm tree wastes on the behavior of the concrete to reduce cement content in the concrete to ensure a sustainable environment. Both fibers of palm tree and the ash of palm tree leaves are used in this study considering different percentages of palm tree wastes, which are replaced the cement, to investigate both of workability and strength of the concrete. Also, the combination of palm tree leaves ash and fibers of palm trees is investigated. The slump and compression tests are carried out to evaluate both workability and concrete strength. The palm fibers were reducing the workability of concrete at both of different percentage of replacement and different fiber lengths. The slump is reduced by 26.667% at 2 cm fibers length and it is completely lost at 5 cm length fibers at the same percentage of replacement of 5% of the cement content. The palm fibers were weakening concrete compressive strength at different percentages and different fiber lengths. Palm leaves ash was enhancing concrete workability and concrete compressive strength.

Enumeration of Plant Species Inhabiting Oil Palm Trees (Elaeis-guineensis) at Zawlpui Plantation Site, Serchhip District, Mizoram

2021 ◽  
Vol 9 (1) ◽  
pp. 32-35
Author(s):  
Lal awmpuia ◽  
◽  
H. Lalruatsanga ◽  
Keyword(s):  
Species Diversity ◽  
Plant Species ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Vascular Plant ◽  
Fungal Species ◽  
Small Scale ◽  
Palm Tree ◽  
Palm Trees ◽  
Plant Stem

A survey of plant species inhabiting oil palm trees was conducted in Zawlpui area of Serchhip district, Mizoram. The study area is a tropical potent agriculture zone, wherein small-scale business of Elaeis guineensis plantation is carried out by several farmers mainly within the gentle sloppy terrain. Oil palm with a rough bark harbors immense inhabitation by a variety plants, that rooted mostly on the debris at leaf base. Species diversity on the plant stem supposedly encourage insects and termites to establish herewith, thus causing harming to the tree. The sample stands within 400 m–800 m altitude were picked randomly. A total of 50 palm tree were accounted and all associated plants on the stem above 30 cm from the ground are all recorded. Species that cannot be identified on the site were pressed and observed at Botany Research lab, Pachhunga University College. The survey documented 38 vascular plant species which include 4 epiphytes and 1 non-vascular species of lichen, 1 bryophyte and 4 fungal species at that time. Invasive Peperomia pellucida and epiphytic pteridophytes Nephrolepis biserrata was found in most of the stand sample; however, Peperomia population decreases with the increasing elevation. Dynamics of inhabitant species diversity also correlate to location of tree. The study also established that diversity of inhabiting species was comparatively high on parts of the stem facing sunlight.

The Continuity of Palm Sugar Production: A Literature Review

2021 ◽  
Vol 6 (2) ◽  
pp. 37
Author(s):  
Liska Simamora ◽  
Damara Dinda Nirmalasari Zebua ◽  
Yoga Aji Handoko ◽  
Nugraheni Widyawati
Keyword(s):  
Developing Countries ◽  
Literature Review ◽  
Developed Countries ◽  
Palm Tree ◽  
Sugar Production ◽  
Food Ingredients ◽  
Palm Trees ◽  
Important Benefit ◽  
Palm Sugar ◽  
Increasing Demand

The demand for palm sugar is increasing since people prefer natural ingredients. Natural and organic food ingredients have the reputation of being healthier and safer than synthetic ingredients. This study will discuss one particular ingredient namely palm sugar which is known as a natural sweetener. Developed countries have started to import palm sugar as a natural sweetener from developing countries. The production of palm sugar in developing countries has an important benefit in the craftsman household economy. However, current production of palm sugar does not meet the increasing demand, which is caused mainly by the lack of farmers, palm sugar craftsmen’s inadequate knowledge of palm sugar production, and poor incorporation of technology both in the cultivation of palm tree and the production process of palm sugar. This literature review study aims to understand the continuity of palm sugar production within the following framework which consists of four steps: (1) identifying current situation, (2) identifying the problems, (3) presenting the resolution, (4) proposing programs and strategies. Based on this framework a few programs and strategies are generated to maintain the continuity of palm sugar production, they are: (1) Palm trees domestication, (2) research and development center for Indonesian palm sugar, and (3) ensuring a good collaboration among the stake holders involved.

scholarly journals Identifying and Quantifying the Abundance of Economically Important Palms in Tropical Moist Forest Using UAV Imagery

2019 ◽  
Vol 12 (1) ◽  
pp. 9 ◽  
Author(s):  
Ximena Tagle Casapia ◽  
Lourdes Falen ◽  
Harm Bartholomeus ◽  
Rodolfo Cárdenas ◽  
Gerardo Flores ◽  
...  
Keyword(s):  
Sustainable Management ◽  
Forest Products ◽  
Palm Tree ◽  
Kappa Index ◽  
Small Areas ◽  
Tree Crowns ◽  
Palm Trees ◽  
Object Based ◽  
Non Timber Forest Products ◽  
Palm Fruits

Sustainable management of non-timber forest products such as palm fruits is crucial for the long-term conservation of intact forest. A major limitation to expanding sustainable management of palms has been the need for precise information about the resources at scales of tens to hundreds of hectares, while typical ground-based surveys only sample small areas. In recent years, small unmanned aerial vehicles (UAVs) have become an important tool for mapping forest areas as they are cheap and easy to transport, and they provide high spatial resolution imagery of remote areas. We developed an object-based classification workflow for RGB UAV imagery which aims to identify and delineate palm tree crowns in the tropical rainforest by combining image processing and GIS functionalities using color and textural information in an integrative way to show one of the potential uses of UAVs in tropical forests. Ten permanent forest plots with 1170 reference palm trees were assessed from October to December 2017. The results indicate that palm tree crowns could be clearly identified and, in some cases, quantified following the workflow. The best results were obtained using the random forest classifier with an 85% overall accuracy and 0.82 kappa index.

Sign in / Sign up

Export Citation Format

Share Document