scholarly journals An updated and illustrated dichotomous key for the Chagas disease vectors of Triatoma brasiliensis species complex and their epidemiologic importance

ZooKeys ◽  
2018 ◽  
Vol 805 ◽  
pp. 33-43 ◽  
Author(s):  
Carolina Dale ◽  
Carlos Eduardo Almeida ◽  
Vagner José Mendonça ◽  
Jader Oliveira ◽  
João Aristeu da Rosa ◽  
...  
Keyword(s):  
Geometric Morphometrics ◽  
Vector Control ◽  
Chagas Disease ◽  
Species Complex ◽  
Natural Infection ◽  
Control Measures ◽  
Disease Vectors ◽  
Dichotomous Key ◽  
High Prevalence ◽  
Chagas Disease Vectors

In the subfamily Triatominae, Triatoma exhibits the largest number of species, which are arranged in complexes. For the T.brasiliensis species complex, recent investigations based on results of geometric morphometrics combined with phylogeny have provided evidence that it should be composed of seven species: T.brasiliensis, T.bahiensis, T.juazeirensis, T.lenti, T.melanica, T.petrocchiae, and T.sherlocki, in which T.brasiliensis is divided in two subspecies: T.b.brasiliensis and T.b.macromelasoma. A taxonomic key is presented to identify each taxon. Among members of this complex, T.b.brasiliensis is the most important in an epidemiologic context, due to its high prevalence in natural infection by Trypanosomacruzi combined with a pronounced adaptation to domiciliary habitats. However, some members may be currently invading and colonizing homes, a process known as domiciliation. Therefore, the key presented here may be potentially useful for researchers as well as those involved in vector control measures.

scholarly journals Molecular eco-epidemiology on the sympatric Chagas disease vectors Triatoma brasiliensis and Triatoma petrocchiae: Ecotopes, genetic variation, natural infection prevalence by trypanosomatids and parasite genotyping

Acta Tropica ◽  
2020 ◽  
Vol 201 ◽  
pp. 105188 ◽  
Author(s):  
Tarcianne M. Lima-Oliveira ◽  
Fernanda von Hertwig M. Fontes ◽  
Maurício Lilioso ◽  
Dayane Pires-Silva ◽  
Marta Maria Geraldes Teixeira ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Chagas Disease ◽  
Natural Infection ◽  
Disease Vectors ◽  
Infection Prevalence ◽  
Chagas Disease Vectors

Chagas Disease Vectors of Paraguay: Entomoepidemiological Aspects of Triatoma sordida (Stål, 1859) and Development of an Identification Key for Paraguayan Triatomines Based on Cytogenetics Data

2021 ◽  
Author(s):  
Nilsa Elizabeth Gonzalez Britez ◽  
Kaio Cesar Chaboli Alevi ◽  
Ariane Cristina Caris Garcia ◽  
Clara Elena Martínez Purroy ◽  
Cleber Galvão ◽  
...  
Keyword(s):  
Vector Control ◽  
Chagas Disease ◽  
Natural Infection ◽  
Identification Key ◽  
Triatoma Infestans ◽  
Eastern Region ◽  
Control Programs ◽  
Cytogenetic Data ◽  
Triatoma Sordida ◽  
Chagas Disease Vectors

Approximately 150,000 people are living with Chagas disease in Paraguay. Although the country has been since 2008 considered as one of the countries that succeeded in interrupted the vector transmission of Chagas by Triatoma infestans in houses of the eastern region, there are nine other species notified in the country that are potential vectors and also deserve attention from vector control programs. Thus, we carried out an entomoepidemiological study of T. sordida in the eastern and western regions of the country and we developed an identification key for Paraguay's triatomines based on cytogenetic data. Between the years 2003 to 2004, 271 specimens of T. sordida were captured in domestic, peridomestic, and wild ecotopes, with 131 insects caught in the eastern (Alto Paraguay, Boquerón and Pte. Hayes) and 140 in the western region of Paraguay (Guairá and Paraguarí). High rates of peridomicillary infestation were observed for both regions. Besides that, the natural infection of the captured insects was detected by optical microscopy in 12% and 10%, and by PCR in 21% and 20% in the eastern and western regions, respectively. Based on cytogenetic data from nine of ten species notified in Paraguay, an identification key was developed to differentiate all taxa. Thus, given the vectorial importance of T. sordida, we highlight the need for continued attention from Paraguay's vector control programs for this species. Further, we provide a taxonomic key that assists in the correct classification of Paraguayan triatomines.

scholarly journals Surveillance of Chagas disease vectors in municipalities of the state of Ceará, Brazil

2009 ◽  
Vol 104 (8) ◽  
pp. 1159-1164 ◽  
Author(s):  
Teresa Cristina Monte Gonçalves ◽  
Assilon Lindoval Carneiro Freitas ◽  
Simone Patrícia Carneiro Freitas
Keyword(s):  
Chagas Disease ◽  
The State ◽  
Disease Vectors ◽  
Chagas Disease Vectors

scholarly journals First Report ofAprostocetus asthenogmus(Hymenoptera: Eulophidae) in South America and Parasitizing Eggs of Triatominae Vectors of Chagas Disease

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Claudiney Biral dos Santos ◽  
Marcelo Teixeira Tavares ◽  
Gustavo Rocha Leite ◽  
Adelson Luiz Ferreira ◽  
Leonardo de Souza Rocha ◽  
...  
Keyword(s):  
South America ◽  
Chagas Disease ◽  
Biological Control Agent ◽  
Control Agent ◽  
Triatoma Infestans ◽  
Disease Vectors ◽  
Parasitoid Species ◽  
Triatomine Species ◽  
Chagas Disease Vectors ◽  
First Time

We report for the first time the parasitism of eggs of two triatomine Chagas disease vectors,Triatoma infestansandT. vitticeps, by the microhymenopterous parasitoidAprostocetus asthenogmus. We also describe the first identification of this parasitoid in South America.A. asthenogmuswere captured near unparasitized triatomine colonies in the municipality of Vitória, state of Espírito Santo, Brazil, and placed into pots with recently laid triatomine eggs. After 24 days, we observed wasps emerging fromT. infestansandT. vitticepseggs. Several characteristics of this parasitoid species suggest that it could be a potential biological control agent of triatomine species.

An oral dose of Fluralaner administered to dogs kills pyrethroid-resistant and susceptible Chagas disease vectors for at least four months

2019 ◽  
Vol 268 ◽  
pp. 98-104 ◽  
Author(s):  
M.A. Laiño ◽  
M.V. Cardinal ◽  
G.F. Enriquez ◽  
A. Alvedro ◽  
M.S. Gaspe ◽  
...  
Keyword(s):  
Oral Dose ◽  
Chagas Disease ◽  
Disease Vectors ◽  
Chagas Disease Vectors

scholarly journals Structure Determination of Juvenile Hormone from Chagas Disease Vectors, Rhodnius prolixus and Triatoma infestans

2020 ◽  
Vol 49 (5) ◽  
pp. 538-541
Author(s):  
Keiji Matsumoto ◽  
Yoko Yasuno ◽  
Kohei Yasuda ◽  
Tsuyoshi Hayashi ◽  
Shin G. Goto ◽  
...  
Keyword(s):  
Juvenile Hormone ◽  
Chagas Disease ◽  
Structure Determination ◽  
Rhodnius Prolixus ◽  
Triatoma Infestans ◽  
Disease Vectors ◽  
Chagas Disease Vectors
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