A study of the scutellum in eight Chagas disease vector species from genus Triatoma (Hemiptera, Reduviidae) using optical and scanning electron microscopy

Obara, Marcos Takashi; Rosa, João Aristeu da; Ceretti, Walter; Urbinatti, Paulo Roberto; Quintero, Lisardo Osório; Barata, José Maria Soares; Galvão, Cléber; Jurberg, José

doi:10.1590/s0074-02762007005000027

Cited by 10 publications

(11 citation statements)

References 7 publications

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“…n. and R. neglectus differs in the shape of the apex and also the position on which that apex reaches urotergite I, since there is no significant difference in terms of length (Table 1). The taxonomic importance of the scutellum was tackled by Obara et al (2007), who verified the differences of that character in eight species of Triatoma . Rosa et al (2012) and Souza et al (2016) also used it to describe R. montenegrensis and R. marabaensis , respectively.…”

Section: Discussionmentioning

confidence: 99%

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A new species of Rhodnius from Brazil (Hemiptera, Reduviidae, Triatominae)

Rosa

Justino

Nascimento

et al. 2017

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Section: Discussionmentioning

confidence: 99%

“…n. and the same number of specimens of R. neglectus , according to Barata (1981), Quintero (2003), Obara et al (2007), Rosa et al (2012), Rosa et al (2014), Souza et al (2016) (Figs 3–9). …”

Section: Methodsmentioning

confidence: 99%

A new species of Rhodnius from Brazil (Hemiptera, Reduviidae, Triatominae)

Rosa

Justino

Nascimento

et al. 2017

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“…To obtain images of eggs, external female genitalia, scutellum, and first urotergite of 35 specimens of the new species of Rhodnius and 32 specimens of R. robustus, samples were examined by scanning electron microscopy under a Topcon SM-300 microscope (Barata 1981;Rosa et al 1999;Quintero 2002;Obara et al 2007;Rosa et al 2010).…”

Section: Methodsmentioning

confidence: 99%

Description of Rhodnius montenegrensis n. sp. (Hemiptera: Reduviidae: Triatominae) from the state of Rondônia, Brazil

Rosa

Rocha

Gardim

et al. 2012

Zootaxa

103

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We present here a multisource approach that takes advantage of several disciplines to address a taxonomic issue. A triatomine related to Rhodnius robustus Larrousse, 1927 was recently found in the state of Rondônia, Brazil. The name Rhodnius montenegrensis n. sp. is suggested because it was found in the municipality of Monte Negro. The main differences between these two species can be detected in the female and male genitalia, but there are also noticeable differences in their eggs. Molecular analysis using PCR-RFLP technique and Bayesian inferences based on a fragment of the Cytochrome b (Cyt b) gene corroborated the morphological findings. We used this integrative approach to address the taxonomic decision for a new Rhodnius species and its relationship with others of this genus. Results obtained herein stress that morphology must be used as the major approach for obtaining phenotypic information, and molecular data should be taken as a complementary tool.

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“…The current classification of the Triatominae into five tribes and 15 genera is largely based on morphological characters, including chromatic ones (Lent and Wygodzinsky, 1979). The most commonly used characters are head and wing shape (Dujardin et al, 1999b;dos Santos et al, 2003;Dumonteil et al, 2007), but a number of other characters have been used such as the structure of the male genitalia (Obara et al, 2007), the egg (dos Santos et al, 2009), antenna (Silva et al, 2002;Catala et al, 2005) and rostrum (Silva et al, 2003). Within the triatomines, for example, the monophylly of the Rhodiniini tribe has been supported by apical antenna insertion, body forms, post-ocular callosities, male genital characteristics, egg surface architecture and salivary gland protein composition (Tartarotti et al, 2006).…”

Section: Systematics and Phylogenymentioning

confidence: 99%

Genetics and evolution of triatomines: from phylogeny to vector control

et al. 2011

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Triatomines are hemipteran bugs acting as vectors of the protozoan parasite Trypanosoma cruzi. This parasite causes Chagas disease, one of the major parasitic diseases in the Americas. Studies of triatomine genetics and evolution have been particularly useful in the design of rational vector control strategies, and are reviewed here. The phylogeography of several triatomine species is now slowly emerging, and the struggle to reconcile the phenotypic, phylogenetic, ecological and epidemiological species concepts makes for a very dynamic field. Population genetic studies using different markers indicate a wide range of population structures, depending on the triatomine species, ranging from highly fragmented to mobile, interbreeding populations. Triatomines transmit T. cruzi in the context of complex interactions between the insect vectors, their bacterial symbionts and the parasites; however, an integrated view of the significance of these interactions in triatomine biology, evolution and in disease transmission is still lacking. The development of novel genetic markers, together with the ongoing sequencing of the Rhodnius prolixus genome and more integrative studies, will provide key tools to expanding our understanding of these important insect vectors and allow the design of improved vector control strategies.

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A study of the scutellum in eight Chagas disease vector species from genus Triatoma (Hemiptera, Reduviidae) using optical and scanning electron microscopy

Cited by 10 publications

References 7 publications

A new species of Rhodnius from Brazil (Hemiptera, Reduviidae, Triatominae)

A new species of Rhodnius from Brazil (Hemiptera, Reduviidae, Triatominae)

Description of Rhodnius montenegrensis n. sp. (Hemiptera: Reduviidae: Triatominae) from the state of Rondônia, Brazil

Genetics and evolution of triatomines: from phylogeny to vector control

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