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.

scholarly journals Trends in Taxonomy of Chagas Disease Vectors (Hemiptera, Reduviidae, Triatominae): From Linnaean to Integrative Taxonomy

Pathogens ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1627
Author(s):  
Kaio Cesar Chaboli Alevi ◽  
Jader de Oliveira ◽  
Dayse da Silva Rocha ◽  
Cleber Galvão
Keyword(s):  
Chagas Disease ◽  
State Of The Art ◽  
Integrative Taxonomy ◽  
Disease Vectors ◽  
Neglected Tropical Disease ◽  
Cryptic Speciation ◽  
Triatomine Species ◽  
Chagas Disease Vectors ◽  
First Time ◽  
Five Tribes

Chagas disease is a neglected tropical disease caused by the protozoan Trypanosoma cruzi and transmitted mainly by members of the subfamily Triatominae. There are currently 157 species, grouped into 18 genera and five tribes. Most descriptions of triatomine species are based on classical taxonomy. Facing evolutionary (cryptic speciation and phenotypic plasticity) and taxonomic (more than 190 synonymizations) problems, it is evident that integrative taxonomy studies are an important and necessary trend for this group of vectors. Almost two-and-a-half centuries after the description of the first species, we present for the first time the state-of-the-art taxonomy of the whole subfamily, covering from the initial classic studies to the use of integrative taxonomy.

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

scholarly journals Alien Invasion: The Case of the Western Conifer-Seed Bug (Heteroptera: Coreidae) in Chile, Overreaction, and Misidentifications

2019 ◽  
Vol 57 (1) ◽  
pp. 297-303
Author(s):  
Eduardo I Faúndez ◽  
Mariom A Carvajal ◽  
Javier Villablanca
Keyword(s):  
Invasive Species ◽  
South America ◽  
Chagas Disease ◽  
Disease Vectors ◽  
Leptoglossus Occidentalis ◽  
Chagas Disease Vectors ◽  
Conifer Seed ◽  
Alien Invasion ◽  
Western Conifer Seed Bug

Abstract Leptoglossus occidentalis (Heidemann) is an invasive species introduced in Europe, Asia, and most recently South America. In the present study, we report the overreaction situation caused by this bug in Chile, as it has been confused with kissing bugs (Reduviidae: Triatominae), Chagas’ disease vectors. During 2018 and first months of 2019, we received 74 alleged cases of kissing bugs to confirm identification. From these, a total of 63 were identified as L. occidentalis, representing a 85% of the total denounces. Additionally, the first bite case in a human is described. The situation caused by L. occidentalis in Chile is discussed, and an illustrated table is provided to correctly identify this species and tell it apart from Triatomines. It is concluded that L. occidentalis is well established in Chile, and it is necessary to educate the population on recognition of the bug and to avoid overreaction as the species can inflict painful bites, but not transmit any disease.

scholarly journals Triatoma vitticeps subcomplex (Hemiptera, Reduviidae, Triatominae): a new grouping of Chagas disease vectors from South America

2017 ◽  
Vol 10 (1) ◽  
Author(s):  
Kaio Cesar Chaboli Alevi ◽  
Jader de Oliveira ◽  
Maria Tercília Vilela de Azeredo-Oliveira ◽  
João Aristeu da Rosa
Keyword(s):  
South America ◽  
Chagas Disease ◽  
Disease Vectors ◽  
Chagas Disease Vectors

scholarly journals Analysis of Chagas disease vectors occurrence data: the Argentinean triatomine species database

2020 ◽  
Vol 8 ◽  
Author(s):  
Soledad Ceccarelli ◽  
Agustín Balsalobre ◽  
Maria Cano ◽  
Delmi Canale ◽  
Patricia Lobbia ◽  
...  
Keyword(s):  
Chagas Disease ◽  
Disease Vectors ◽  
Ecological Analysis ◽  
Policy Makers ◽  
Occurrence Data ◽  
Triatomine Species ◽  
Chagas Disease Vectors ◽  
Comprehensive Picture ◽  
And Control ◽  
Panstrongylus Geniculatus

Chagas disease is a neglected tropical disease and Trypanosoma cruzi (its etiological agent) is mainly transmitted by triatomines (Hemiptera: Reduviidae). All triatomine species are considered as potential vectors; thus, their geographic distribution and habitat information should be a fundamental guide for the surveillance and control of Chagas disease. Currently, of the 137 species distributed in the Americas (Justi and Galvão 2017), 17 species are cited for Argentina: Panstrongylus geniculatus, P. guentheri, P. megistus, P. rufotuberculatus, Psammolestes coreodes, Triatoma breyeri, T. delpontei, T. eratyrusiformis, T. garciabesi, T. guasayana, T. infestans, T. limai, T. patagonica, T. platensis, T. rubrofasciata, T. rubrovaria and T. sordida. Almost 20 years have passed since the publication of the “Atlas of the Triatominae” by Carcavallo et al. (1998) and no work has been done to provide an updated complete integration and analysis of the existing information for Argentinean triatomine species. Here we provide a detailed temporal, spatial and ecological analysis of updated occurrence data for triatomines present in Argentina. This is the first database of the 17 triatomine species present in Argentina (15917 records), with a critical analysis of the temporal, spatial and ecological characteristics of 9788 records. The information spans the last 100 years (1918–2019) and it was mostly obtained from the DataTri database and from the Argentinean Vector Reference Center. As 70% of the occurrences corresponded to the last 20 years, the information was split into two broad periods (pre-2000 and post-2000). Occurrence data for most species show distribution range contractions, which, from the pre-2000 to post-2000 period, became restricted mainly to the dry and humid Chaco ecoregions. Concurrently, the highest species richness foci occurred within those ecoregions. The species T. infestans, T. sordida, T. garciabesi and T. guasayana mostly colonise human dwelling habitats. This study provides the most comprehensive picture available for Argentinean triatomine species and we hope that any knowledge gaps will encourage others to keep this information updated to assist health policy-makers to make decisions based on the best evidence.

Thermal Tolerance Plasticity in Chagas Disease Vectors Rhodnius prolixus (Hemiptera: Reduviidae) and Triatoma infestans

2019 ◽  
Vol 56 (4) ◽  
pp. 997-1003 ◽  
Author(s):  
Silvina A Belliard ◽  
Gerardo J De la Vega ◽  
Pablo E Schilman
Keyword(s):  
Chagas Disease ◽  
Thermal Tolerance ◽  
Rhodnius Prolixus ◽  
Triatoma Infestans ◽  
Disease Vectors ◽  
Abiotic Factor ◽  
Seasonal Temperature ◽  
Positive Effects ◽  
Wide Range ◽  
Chagas Disease Vectors

Abstract Temperature is recognized as the most influential abiotic factor on the distribution and dispersion of most insect species including Rhodnius prolixus (Stål, 1859) and Triatoma infestans (Klug, 1834), the two most important Chagas disease vectors. Although, these species thermotolerance range is well known their plasticity has never been addressed in these or any other triatomines. Herein, we investigate the effects of acclimation on thermotolerance range and resistance to stressful low temperatures by assessing thermal critical limits and ‘chill-coma recovery time’ (CCRT), respectively. We found positive effects of acclimation on thermotolerance range, especially on the thermal critical minimum of both species. In contrast, CCRT did not respond to acclimation in either. Our results reveal the plasticity of these Triatomines thermal tolerance in response to a wide range of acclimation temperatures. This presumably represents a physiological adaptation to daily or seasonal temperature variation with concomitant improvement in dispersion potential.

scholarly journals Geographic Distribution of Chagas Disease Vectors in Brazil Based on Ecological Niche Modeling

2012 ◽  
Vol 2012 ◽  
pp. 1-15 ◽  
Author(s):  
Rodrigo Gurgel-Gonçalves ◽  
Cléber Galvão ◽  
Jane Costa ◽  
A. Townsend Peterson
Keyword(s):  
Chagas Disease ◽  
Geographic Distribution ◽  
Disease Transmission ◽  
Ecological Niche Modeling ◽  
Transmission Risk ◽  
Triatoma Infestans ◽  
Ecological Niches ◽  
Triatoma Sordida ◽  
Triatomine Species ◽  
Chagas Disease Vectors

Although Brazil was declared free from Chagas disease transmission by the domestic vectorTriatoma infestans, human acute cases are still being registered based on transmission by native triatomine species. For a better understanding of transmission risk, the geographic distribution of Brazilian triatomines was analyzed. Sixteen out of 62 Brazilian species that both occur in>20 municipalities and present synanthropic tendencies were modeled based on their ecological niches.Panstrongylus geniculatusandP. megistusshowed broad ecological ranges, but most of the species sort out by the biome in which they are distributed:Rhodnius pictipesandR. robustusin the Amazon;R. neglectus,Triatoma sordida, andT. costalimaiin the Cerrado;R. nasutus,P. lutzi,T. brasiliensis,T. pseudomaculata,T. melanocephala, andT. petrocchiaein the Caatinga;T. rubrovariain the southern pampas;T. tibiamaculataandT. vitticepsin the Atlantic Forest. Although most occurrences were recorded in open areas (Cerrado and Caatinga), our results show that all environmental conditions in the country are favorable to one or more of the species analyzed, such that almost nowhere is Chagas transmission risk negligible.

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