Phylogenetic and phenotypic relationships of the Triatoma sordida subcomplex (Hemiptera: Reduviidae: Triatominae)

Belintani, Tiago; Oliveira, Jader de; Pinotti, Heloisa; Silva, Lucas Abrantes; Alevi, Kaio Cesar Chaboli; Galvão, Cléber; Rosa, João Aristeu da

doi:10.1016/j.actatropica.2020.105679

Cited by 21 publications

(21 citation statements)

References 47 publications

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“…Panzera et al, 22 considering the species T. sordida, T. patagonica, T. guasayana, and T. garciabesi, suggested cryptic speciation for the T. sordida subcomplex proposed by Schofield and Galvão 48 (currently the T. sordida subcomplex is a monophyletic group formed by the species T. sordida, T. rosai, T. garciabesi, T. jurbergi, T. matogrossensis, and T. vandae). 6,49 However, even if subtle, there are morphological and/or morphometric differences between all studied species. 24,25,[50][51][52][53] Besides, our results point out significant morphological/morphometric differences between T. rosai and T. sordida (Brazil, Bolivia and Paraguay) and between the different T. sordida populations from Brazil, Bolivia, and Paraguay, confirming the morphology/morphometry data presented by Alevi et al 6 and geometric morphometry data presented by Naterro et al 25 Therefore, once more, the term cryptic speciation does not apply.…”

Section: Discussionmentioning

confidence: 99%

Intraspecific and Interspecific Phenotypic Differences Confirm the Absence of Cryptic Speciation in Triatoma sordida (Hemiptera, Triatominae)

Garcia

Oliveira

Cristal

et al. 2021

The American Journal of Tropical Medicine and Hygiene

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Triatoma sordida is an endemic Chagas disease vector in South America, distributed in Brazil, Bolivia, Paraguay, and Uruguay. Chromosomal, molecular, isoenzimatic, and cuticular hydrocarbon pattern studies indicate cryptic speciation in T. sordida. Recently, T. rosai was described from specimens from Argentina initially characterized as T. sordida. Although several authors assume that the speciation process that supports this differentiation in T. sordida is the result of cryptic speciation, further morphological and/or morphometric studies are necessary to prove the application of this evolutionary event, because the only morphological intraspecific comparison performed in T. sordida is based on geometric morphometry and the only interspecific comparison made is between T. rosai and T. sordida from Brazil that evaluated morphological and morphometric differences. Based on this, morphological analyses of thorax and abdomen using Scanning Electron Microscopy and morphometric analyses of the head, thorax, and abdomen among T. sordida from Brazil, Bolivia, and Paraguay, as well as T. rosai, were performed to assess whether the evolutionary process responsible for variations is the cryptic speciation phenomenon. Morphological differences in the thorax and female external genitalia, as well as morphometric differences in the head, thorax, abdomen, pronotum, and scutellum structures, were observed. Based on this, the evolutionary process that supports, so far, these divergences observed for T. sordida populations/T. sordida subcomplex is not cryptic speciation. Moreover, we draw attention to the necessity for morphological/morphometric studies to correctly apply the cryptic species/speciation terms in triatomines.

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Section: Discussionmentioning

confidence: 99%

Intraspecific and Interspecific Phenotypic Differences Confirm the Absence of Cryptic Speciation in Triatoma sordida (Hemiptera, Triatominae)

Garcia

Oliveira

Cristal

et al. 2021

The American Journal of Tropical Medicine and Hygiene

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“…Recently two subcomplexes of the genus Triatoma were studied by means of geometric morphometrics, which indicated the potential of the technique to study specimens that are phylogenetically close [43,45]. Geometric morphometrics allowed describing the differences in head shape and size of the ve nymphal instars.…”

Section: Discussionmentioning

confidence: 99%

“…The technique is used in paleontological, anthropological, ecological, zoological, and botanical studies [29,33]. In triatomines, geometric morphometry is used to assess the shape and size variables of hemelytra [43,44], heads [12,45], and eggs [46]. Also, for ontogenetic studies [47,48,49].…”

Section: Discussionmentioning

confidence: 99%

Immature Instars of Three Species of Rhodnius (Hemiptera, Reduviidae, Triatominae): Morphological and Morphometric Studies

Cacini

Oliveira

Belintani

et al. 2021

Preprint

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Background: Among the 18 genera of the Triatominae subfamily, three stand out for their diversity and epidemiological importance: Triatoma, Panstrongylus, and Rhodnius. The genus Rhodnius includes 21 species that can transmit Trypanosoma cruzi (the etiological agent of Chagas disease, also known as American trypanosomiasis) and Trypanosoma rangeli. The Rhodnius prolixus complex comprises seven species, including Rhodnius marabaensis, Rhodnius prolixus, and Rhodnius robustus, which occur in Northern region of Brazil. Since both adults and immatures can carry T. cruzi, in this study the five nymphal instars of the three species mentioned were dorsally characterized. Methods: By means of light microscopy, morphometrics and geometric morphometrics, the present work measures and describes the morphological characters of the five nymphal instars of Rhodnius marabaensis, Rhodnius prolixus, and Rhodnius robustus. Results: The study allowed the characterization of all the five nymphal instars, as well as the distinction between the three species in each of their instars. Conclusions: The morphological, morphometrics of the head, thorax, and abdomen and geometric morphometrics studies of the head enabled the specific distinction of these three species in all the five instars.

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“…In Triatominae, biometric studies are used to characterize new species, detect populations, and define structures 18 . For example, geometric morphometry allows the collection of information about the shape and size of organisms, which helps in systematic and phylogenetic studies 10 , 19 , 20 .…”

Section: Introductionmentioning

confidence: 99%

Checklist and phenetics studies of nymphs of two species of triatomines: Triatoma lenti Sherlock & Serafim, 1967 and Triatoma sherlocki Papa, Jurberg, Carcavallo, Cerqueira, Barata, 2002 (Hemiptera: Reduviidae: Triatominae)

Rosseto

Paiva

Belintani

et al. 2021

Rev. Soc. Bras. Med. Trop.

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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.

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Phylogenetic and phenotypic relationships of the Triatoma sordida subcomplex (Hemiptera: Reduviidae: Triatominae)

Cited by 21 publications

References 47 publications

Intraspecific and Interspecific Phenotypic Differences Confirm the Absence of Cryptic Speciation in Triatoma sordida (Hemiptera, Triatominae)

Intraspecific and Interspecific Phenotypic Differences Confirm the Absence of Cryptic Speciation in Triatoma sordida (Hemiptera, Triatominae)

Immature Instars of Three Species of Rhodnius (Hemiptera, Reduviidae, Triatominae): Morphological and Morphometric Studies

Checklist and phenetics studies of nymphs of two species of triatomines: Triatoma lenti Sherlock & Serafim, 1967 and Triatoma sherlocki Papa, Jurberg, Carcavallo, Cerqueira, Barata, 2002 (Hemiptera: Reduviidae: Triatominae)

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