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Article ; Online: Description of the spermathecae and testicles of Triatoma melanocephala Neiva & Pinto, 1923 (Hemiptera

Jader de Oliveira / Kaio Cesar Chaboli Alevi / Juliana Damieli Nascimento / Vagner José Mendonça / Renato Freitas de Araújo / João Aristeu da Rosa

Revista Chilena de Entomología, Vol 49, Iss 2, Pp 271-

Reduviidae: Triatominae)

2023 Volume 278

Abstract: Triatoma melanocephala is an endemic species of Brazil. Phenotypic (external morphology) and molecular studies were performed to contribute to the taxonomy and phylogeny of triatomines, since few studies on the internal morphology of these were found. In ...

Abstract	Triatoma melanocephala is an endemic species of Brazil. Phenotypic (external morphology) and molecular studies were performed to contribute to the taxonomy and phylogeny of triatomines, since few studies on the internal morphology of these were found. In order to contribute to the biological, morphological and taxonomic knowledge of the subfamily Triatominae, this work describes the internal morphology of the reproductive apparatus of adult males and females of T. melanocephala. For this work 30 specimens from Jequié, Bahia, Brazil were used. Triatoma melanocephala’s reproductive system included slim spermathecae insertions, large/medium rounded terminal bodies, and irregular ellipsoid-shaped testicles with a transparent, vitreous appearance. These results contribute to the knowledge of the reproductive biology of this species of vectorial importance and show taxonomic relevance, as well as possible application in systematic studies.
Keywords	chagas disease ; gonads ; internal morphology ; triatomine ; vectors ; Science ; Q ; Zoology ; QL1-991
Subject code	590
Language	English
Publishing date	2023-04-01T00:00:00Z
Publisher	Sociedad Chilena de Entomología
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Checklist and phenetics studies of nymphs of two species of triatomines

Leandro Augusto Rosseto / Vinícius Fernandes De Paiva / Tiago Belintani / Jader de Oliveira / Vagner José Mendonça / João Aristeu Da Rosa

Revista da Sociedade Brasileira de Medicina Tropical, Vol

Triatoma lenti Sherlock & Serafim, 1967 and Triatoma sherlocki Papa, Jurberg, Carcavallo, Cerqueira, Barata, 2002 (Hemiptera: Reduviidae: Triatominae)

2021 Volume 54

Abstract: Abstract INTRODUCTION: Triatoma lenti and Triatoma sherlocki are endemic species of the State of Bahia, located in northeastern Brazil, where they have records of domiciliation in the human environment. In view of the epidemiological aspect and taxonomic ...

Abstract	Abstract INTRODUCTION: Triatoma lenti and Triatoma sherlocki are endemic species of the State of Bahia, located in northeastern Brazil, where they have records of domiciliation in the human environment. In view of the epidemiological aspect and taxonomic importance of these species for the systematics of the Triatoma genus, a study was carried out with nymphs of all five instars. METHODS An extensive review of studies on nymphs from the subfamily Triatominae is presented. Morphology was studied using a scanning electron microscope and morphometric analyses. RESULTS: The morphological study allowed us to characterize and discriminate species by means of scanning electron microscope of the last abdominal segment. In addition, the results show morphometric variability, with the total size of the head that best discriminates the species. CONCLUSIONS: Studies on nymphs are fundamental to the ecosystem; however, the literature on the immature forms of certain groups is scarce, difficult to use, or nonexistent. Therefore, this study includes morphological and morphometric data of the nymphal instars of T. lenti and T. sherlocki, corroborating the specific taxonomy of these species.
Keywords	Chagas disease ; Morphometric ; Morphology of nymphal ; Scanning electron microscope ; Taxonomy ; Triatoma immature instars ; Arctic medicine. Tropical medicine ; RC955-962
Subject code	590
Language	English
Publishing date	2021-12-01T00:00:00Z
Publisher	Sociedade Brasileira de Medicina Tropical (SBMT)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Differentiation of Rhodnius neglectus and Rhodnius prolixus (Hemiptera

Rossana Falcone / Aline Rimoldi Ribeiro / Jader de Oliveira / Vagner José Mendonça / Márcia Graminha / João Aristeu da Rosa

Revista da Sociedade Brasileira de Medicina Tropical, Vol

Reduviidae: Triatominae) by multiple parameters

2020 Volume 53

Abstract: Abstract Introduction: The genus Rhodnius in the subfamily Triatominae comprises 20 species, which can transmit Trypanosoma cruzi and Trypanosoma rangeli. Due to the development of molecular techniques, Triatominae species can now be characterized by ... ...

Abstract	Abstract Introduction: The genus Rhodnius in the subfamily Triatominae comprises 20 species, which can transmit Trypanosoma cruzi and Trypanosoma rangeli. Due to the development of molecular techniques, Triatominae species can now be characterized by mitochondrial and nuclear markers, making it possible to verify and/or correct the existing data on these species. The results achieved in this study provide a more detailed and accurate differentiation of the Rhodnius species, helping the establishment of a more appropriate classification. Methods: Data collection was performed by DNA analysis, morphological and morphometric studies to distinguish four populations of R. neglectus and four of R. prolixus. Phylogenetic data were compared to morphological and morphometric data. Results: The analysis of Cytb fragments suggests that the four colonies designated to Rhodnius neglectus as well as those of R. prolixus were correctly identified. Conclusions: The morphological characters observed in the specimens of the colonies originally identified as R. prolixus and R. neglectus, such as the presence or absence of collar in the eggs, the patterns of the median process of the pygophore, and anterolateral angle, are consistent with the species. Geometric morphometrics also show an intraspecific variability in R. prolixus.
Keywords	Taxonomy ; Phylogeny ; Cytochrome b ; Morphology ; Geometric morphometrics ; Arctic medicine. Tropical medicine ; RC955-962
Subject code	590
Language	English
Publishing date	2020-04-01T00:00:00Z
Publisher	Sociedade Brasileira de Medicina Tropical (SBMT)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Perfil epidemiológico e tendência temporal da leishmaniose visceral

Francisca Miriane de Araújo Batista / Roniele Araújo de Sousa / Bruno Guedes Alcoforado Aguiar / Andressa Barros Ibiapina / Layana Pachêco de Araújo Albuquerque / Vagner José Mendonça / Carlos Henrique Nery Costa

Cadernos de Saúde Pública, Vol 37, Iss

Piauí, Brasil, 2008 a 2018

2021 Volume 11

Abstract: A leishmaniose visceral (LV) ou calazar é uma das principais doenças tropicais negligenciadas, de grande importância devido ao caráter letal desta zoonose causada por protozoários do gênero Leishmania. Objetivou-se analisar a tendência temporal dos casos ...

Abstract	A leishmaniose visceral (LV) ou calazar é uma das principais doenças tropicais negligenciadas, de grande importância devido ao caráter letal desta zoonose causada por protozoários do gênero Leishmania. Objetivou-se analisar a tendência temporal dos casos de LV no Estado do Piauí, Brasil, de 2008 a 2018, inserindo-o dentro do período total de 1971 a 2018. Utilizaram-se dados do Sistema de Informação de Agravos de Notificação (SINAN) e do Sistema de Informações sobre Mortalidade (SIM). Para análise da carga da doença, foram coletados dados do Instituto de Métricas e Avaliação em Saúde através do estudo Carga Global de Doenças, Lesões e Fatores de Risco. Foi empregada a análise de regressão Prais-Winsten. Foram registrados 2.374 casos com provável local de infecção no Piauí e 2.492 casos em residentes do estado. A série histórica analisada, de 1971 a 2018, reafirma o caráter cíclico da doença, pela presença dos picos epidêmicos identificados em 1983 e 1984, 1993 e 1994, 2003 e 2004 e 2013 e 2014. Não foram identificadas alterações significativas na tendência dos coeficientes de incidência, mortalidade e letalidade no estado. No entanto, houve aumento significativo do coeficiente de incidência no Território de Desenvolvimento (TD) Chapada das Mangabeiras (variação percentual anual de 17,5%) e redução no TD Vale do Sambito (-18,3%) e TD Vale do Rio Guaribas (-8,1%). A LV tem a maior carga de doença medida em anos de vida ajustados por deficiência entre as doenças tropicais negligenciadas do estado. Recomenda-se o aprimoramento das medidas de vigilância e controle do agravo.
Keywords	Leishmaniose Visceral ; Epidemiologia ; Zoonoses ; Vigilância Epidemiológica ; Medicine ; R ; Public aspects of medicine ; RA1-1270
Language	English
Publishing date	2021-12-01T00:00:00Z
Publisher	Escola Nacional de Saúde Pública, Fundação Oswaldo Cruz
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: An updated and illustrated dichotomous key for the Chagas disease vectors of Triatoma brasiliensis species complex and their epidemiologic importance

Carolina Dale / Carlos Eduardo Almeida / Vagner José Mendonça / Jader Oliveira / João Aristeu da Rosa / Cleber Galvão / Jane Costa

ZooKeys, Vol 805, Iss , Pp 33-

2018 Volume 43

Abstract: 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 ... ...

Abstract	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 Trypanosoma cruzi 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.
Keywords	Zoology ; QL1-991
Subject code	590
Language	English
Publishing date	2018-12-01T00:00:00Z
Publisher	Pensoft Publishers
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Phenotypic and genetic variation of Triatoma costalimai (Hemiptera

Daniel Pagotto Vendrami / Walter Ceretti-Junior / Marcos Takashi Obara / Vagner José Mendonça / Eduardo Oyama Lins Fonseca / Antonio Ralph Medeiros-Sousa / Mauro Toledo Marrelli / Rodrigo Gurgel-Gonçalves

Revista da Sociedade Brasileira de Medicina Tropical, Vol

Reduviidae)

2020 Volume 54

Abstract: Abstract INTRODUCTION: We aimed to study intraspecific variation in Triatoma costalimai, a potential vector of Chagas disease present in Brazil and Bolivia. METHODS: We analyzed phenotypic (connexivum color patterns, wing morphometrics) and genetic ... ...

Abstract	Abstract INTRODUCTION: We aimed to study intraspecific variation in Triatoma costalimai, a potential vector of Chagas disease present in Brazil and Bolivia. METHODS: We analyzed phenotypic (connexivum color patterns, wing morphometrics) and genetic variation (16S mtDNA) of three Brazilian T. costalimai populations. We compared 16S sequences with those of putative Bolivian T. costalimai and its sister species, T. jatai. RESULTS: Brazilian populations had different connexivum color patterns and forewing shapes. A 16S mtDNA haplotype network showed a clear separation of Brazilian T. costalimai from both T. jatai and Bolivian T. costalimai. CONCLUSIONS: We report considerable variability in T. costalimai populations.
Keywords	Triatoma costalimai ; 16S mtDNA ; Connexivum color patterns ; Wing morphometry ; Chagas disease ; Arctic medicine. Tropical medicine ; RC955-962
Language	English
Publishing date	2020-12-01T00:00:00Z
Publisher	Sociedade Brasileira de Medicina Tropical (SBMT)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Triatoma brasiliensis Neiva, 1911 and Triatoma pseudomaculata Corrêa and Espínola, 1964 (Hemiptera, Reduviidae, Triatominae) in rural communities in Northeast Brazil

Ana Laura da Silva Ferreira / Maricélia de Aquino Santana / Luan Victor Brandão dos Santos / Daniel Pereira Monteiro / José Henrique Furtado Campos / Layara Larice Jesuíno Sena / Vagner José Mendonça

Revista do Instituto de Medicina Tropical de São Paulo, Vol

2020 Volume 62

Abstract: ABSTRACT Chagas disease is an important endemic morbidity in Latin America affecting millions of people in the American continent. It is caused by the protozoan Trypanosoma cruzi, and transmitted through the feces of the insect vector belonging to the ... ...

Abstract	ABSTRACT Chagas disease is an important endemic morbidity in Latin America affecting millions of people in the American continent. It is caused by the protozoan Trypanosoma cruzi, and transmitted through the feces of the insect vector belonging to the subfamily Triatominae. The present conducted an entomological survey of triatomines and analyzed entomological indicators, such as the rate of infestation, colonization, triatomine density and natural infection in rural communities in the municipality of Campinas do Piaui, Piaui State, in the Northeast region of Brazil. Data on the search of triatomines performed in 167 domiciliary units (DUs), harvested during the period of February to July 2019, in 12 rural communities were analyzed. The capture of triatomines occurred in all studied communities, being 76 the number of positive DUs, of the 167 surveyed, presenting a global rate of infestation of 45.51%. Two triatomines species were collected: Triatoma brasiliensis (98.49%) and T. pseudomaculata (1.51%), the first was found in the domiciliary and peridomiciliary areas, while the second was captured only in peridomiciliary areas. The index of colonization was 17.1%. Natural infection was observed only in 5.44% of T. brasiliensis samples. The entomological survey was conducted in rural communities, showingthe risk of transmission of Chagas disease to the local population, requiring continuous entomological surveillance and vector control.
Keywords	Chagas disease ; Surveillance ; Epidemiology ; Complex Triatoma brasiliensis ; Triatoma pseudomaculata ; Trypanosoma cruzi ; Arctic medicine. Tropical medicine ; RC955-962
Language	English
Publishing date	2020-09-01T00:00:00Z
Publisher	Universidade de São Paulo
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Automated identification of insect vectors of Chagas disease in Brazil and Mexico

Rodrigo Gurgel-Gonçalves / Ed Komp / Lindsay P. Campbell / Ali Khalighifar / Jarrett Mellenbruch / Vagner José Mendonça / Hannah L. Owens / Keynes de la Cruz Felix / A Townsend Peterson / Janine M. Ramsey

PeerJ, Vol 5, p e

the Virtual Vector Lab

2017 Volume 3040

Abstract: Identification of arthropods important in disease transmission is a crucial, yet difficult, task that can demand considerable training and experience. An important case in point is that of the 150+ species of Triatominae, vectors of Trypanosoma cruzi, ... ...

Abstract	Identification of arthropods important in disease transmission is a crucial, yet difficult, task that can demand considerable training and experience. An important case in point is that of the 150+ species of Triatominae, vectors of Trypanosoma cruzi, causative agent of Chagas disease across the Americas. We present a fully automated system that is able to identify triatomine bugs from Mexico and Brazil with an accuracy consistently above 80%, and with considerable potential for further improvement. The system processes digital photographs from a photo apparatus into landmarks, and uses ratios of measurements among those landmarks, as well as (in a preliminary exploration) two measurements that approximate aspects of coloration, as the basis for classification. This project has thus produced a working prototype that achieves reasonably robust correct identification rates, although many more developments can and will be added, and—more broadly—the project illustrates the value of multidisciplinary collaborations in resolving difficult and complex challenges.
Keywords	Identification ; Chagas disease ; Triatominae ; Automation ; Primary occurrence data ; Medicine ; R ; Biology (General) ; QH301-705.5
Subject code	006
Language	English
Publishing date	2017-04-01T00:00:00Z
Publisher	PeerJ Inc.
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Characterization of the external female genitalia of six species of Triatominae (Hemiptera

João Aristeu da Rosa / Vagner José Mendonça / Cláudia Solano Rocha / Sueli Gardim / Mario Cilense

Memórias do Instituto Oswaldo Cruz., Vol 105, Iss 3, Pp 286-

Reduviidade) by scanning electron microscopy

2010 Volume 292

Abstract: By macroscopic and microscopic dorsal side observation, it was noted that the IX and X segments of two species each of Panstrongylus and Triatoma terminate in an elongated way, whereas they terminate abruptly in the two species of Rhodnius. Scanning ... ...

Abstract	By macroscopic and microscopic dorsal side observation, it was noted that the IX and X segments of two species each of Panstrongylus and Triatoma terminate in an elongated way, whereas they terminate abruptly in the two species of Rhodnius. Scanning observation of the dorsal, ventral, lateral and posterior sides of the female genitalia of Panstrongylus herreri, Panstrongylus megistus, Rhodnius colombiensis, Rhodnius prolixus, Triatoma infestans and Triatoma vitticeps revealed that these six species are generally and specifically distinguished based on these elements. We describe several components that distinguish P. herreri from P. megistus: four on the dorsal side: the VII, VIII, IX and X segments, on the ventral view, three: VII sternite, VIII gonocoxite and VIII gonapophyse, on the lateral view one character, VIII gonocoxite and on the posterior view three characters: VIII and IX gonocoxite and XI gonopophyse. Comparing R. colombiensis and R. prolixus, there were three distinct characters on the dorsal side: the VII, VIII and X segments, on the ventral view three characters: the IX and X segments and VIII gonocoxite and on the posterior view four characters: the VIII, IX, X segments and VIII gonapophyse that distinguish the two species. T. infestans and T. vitticeps have four different characters on the dorsal side: the VII, VIII, IX and X segments, on the ventral view four characters: the VII and X segments, VIII gonocoxite and VIII gonapophyse, on the lateral view two characters, IX and X segments and on the posterior view four characters: the IX and X segments, VIII gonocoxite and VIII gonapophyse that distinguish the two species. Examination of the external female genitalia of six triatomine species by scanning suggests that these components are useful for taxonomical studies.
Keywords	Triatominae ; taxonomy ; external female genitalia ; Arctic medicine. Tropical medicine ; RC955-962 ; Microbiology ; QR1-502
Subject code	590
Language	English
Publishing date	2010-05-01T00:00:00Z
Publisher	Instituto Oswaldo Cruz, Ministério da Saúde
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: A new species of Rhodnius from Brazil (Hemiptera, Reduviidae, Triatominae)

João Aristeu da Rosa / Hernany Henrique Garcia Justino / Juliana Damieli Nascimento / Vagner José Mendonça / Claudia Solano Rocha / Danila Blanco de Carvalho / Rossana Falcone / Maria Tercília Vilela de Azeredo-Oliveira / Kaio Cesar Chaboli Alevi / Jader de Oliveira

ZooKeys, Vol 675, Iss , Pp 1-

2017 Volume 25

Abstract: A colony was formed from eggs of a Rhodnius sp. female collected in Taquarussu, Mato Grosso do Sul, Brazil, and its specimens were used to describe R. taquarussuensis sp. n. This species is similar to R. neglectus, but distinct characters were observed ... ...

Abstract	A colony was formed from eggs of a Rhodnius sp. female collected in Taquarussu, Mato Grosso do Sul, Brazil, and its specimens were used to describe R. taquarussuensis sp. n. This species is similar to R. neglectus, but distinct characters were observed on the head, thorax, abdomen, female external genitalia and male genitalia. Chromosomal differences between the two species were also established.
Keywords	Zoology ; QL1-991
Language	English
Publishing date	2017-05-01T00:00:00Z
Publisher	Pensoft Publishers
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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