Can body traits, other than wings, reflect the flight ability of Triatominae bugs?

Hernández, María Laura; Dujardin, Jean; Gorla, David Eladio; Catalá, Silvia

doi:10.1590/0037-8682-0249-2015

Cited by 17 publications

(18 citation statements)

References 73 publications

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“…For example, wing geometric morphometrics was successfully applied to delimit species within the T. brasiliensis [ 28 ] and T. dimidiata [ 29 ] species complexes, with results being in agreement with those of molecular systematics studies [ 30 , 31 ]. To our knowledge, the pronotum, has been used to evaluate the dispersive capacity of other species of the Triatominae [ 32 , 33 ], but not to differentiate closely related species, subspecies or varieties.…”

Section: Introductionmentioning

confidence: 99%

Morphometric variability among the species of the Sordida subcomplex (Hemiptera: Reduviidae: Triatominae): evidence for differentiation across the distribution range of Triatoma sordida

et al. 2017

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BackgroundThe Sordida subcomplex (Triatominae) comprises four species, Triatoma garciabesi, T. guasayana, T. patagonica and T. sordida, which differ in epidemiological importance and adaptations to human environments. Some morphological similarities among species make taxonomic identification, population differentiation and species delimitation controversial. Triatoma garciabesi and T. sordida are the most similar species, having been considered alternatively two and a single species until T. garciabesi was re-validated, mostly based on the morphology of male genitalia. More recently, T. sordida from Argentina has been proposed as a new cryptic species distinguishable from T. sordida from Brazil, Bolivia and Paraguay by cytogenetics. We studied linear and geometric morphometry of the head, wings and pronotum in populations of these species aiming to find phenotypic markers for their discrimination, especially between T. sordida and T. garciabesi, and if any set of variables that validates T. sordida from Argentina as a new species.ResultsHead width and pronotum length were the linear variables that best differentiated species. Geometric morphometry revealed significant Mahalanobis distances in wing shape between all pairwise comparisons. Triatoma patagonica exhibited the best discrimination and T. garciabesi overlapped the distribution of the other species in the morphometric space of the first two DFA axes. Head shape showed differentiation between all pairs of species except for T. garciabesi and T. sordida. Pronotum shape did not differentiate T. garciabesi from T. guasayana. The comparison between T. garciabesi and T. sordida from Argentina and T. sordida from Brazil and Bolivia revealed low differentiation based on head and pronotum linear measurements. Pronotum and wing shape were different between T. garciabesi and T. sordida from Brazil and Bolivia and T. sordida from Argentina. Head shape did not differentiate T. garciabesi from T. sordida from Argentina.ConclusionsWing shape best delimited the four species phenotypically. The proposed cryptic species, T. sordida from Argentina, differed from T. sordida from Brazil and Bolivia in all measured shape traits, suggesting that the putative new species may not be cryptic. Additional studies integrating cytogenetic, phenotypic and molecular markers, as well as cross-breeding experiments are needed to confirm if these three entities represent true biological species.Electronic supplementary materialThe online version of this article (10.1186/s13071-017-2350-y) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Morphometric variability among the species of the Sordida subcomplex (Hemiptera: Reduviidae: Triatominae): evidence for differentiation across the distribution range of Triatoma sordida

et al. 2017

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“…The absence of walls in the pens in the Chaco zone allows T. infestans to easily fly to homes, leading to frequent peri-domicile to intra-domicile re-infestation, mainly at the end of summer when people usually sleep in the open air or with the door open. Studies of T. infestans collections with light traps revealed significant dispersal of the insect during summer [39,40].…”

Section: Discussionmentioning

confidence: 99%

Assessment of Shape Variation Patterns in Triatoma infestans (Klug 1834) (Hemiptera: Reduviidae: Triatominae): A First Report in Populations from Bolivia

Vilaseca

Méndez

Pinto

et al. 2020

Insects

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The morphological variations of four populations of geographically isolated Triatoma infestans located in the area of inter-Andean valleys and Chaco of Chuquisaca, Bolivia, were evaluated. Fifty-three females and sixty-one males were collected in the peri-domicile and analyzed with geometric morphometrics tools to study the patterns of the head and wing shape variation. The principal component analysis and canonical variate analysis revealed morphological variations between the populations studied, which were then confirmed by the permutation test of the differences between populations using Mahalanobis and Procustes distances. The multivariate regression analysis shows that the centroid size influences the shape of the heads and wings. T. infestans of the inter-Andean valleys are longer in the head and wings compared to the population of the Chaco. We propose that the geometric shape variation may be explained by geographical changes in climatic conditions, peri-domiciliar habitats, food source quality, and the use of insecticides.

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“…Ésta es una herramienta matemática con fundamentos biológicos que ha demostrado ser muy efectiva para descomponer la variación resultante de la fisiología del individuo, de aquella más estable, propia de una población y producto principalmente de un componente genético (Dujardin, 2008). Debido a ésto, la MG ha logrado resolver exitosamente problemas taxonómicos, ha sido utilizada para identificar marcadores de hábitats, en estudios de estructuración poblacional, de dispersión y diferenciación sexual, en arácnidos e insectos entre otros grupos (Bechara y Liria, 2012;Carvalho et al, 2010;Crews y Hedin, 2006;Dujardin, 2008Dujardin, , 2011Hernández et al, 2011Hernández et al, , 2013Hernández et al, , 2015Hernández et al, , 2018Hernández et al, , 2020Pretorius, 2005;Sasakawa, 2016).…”

Section: Introductionunclassified

Caracterización del dimorfismo sexual y reconocimiento de machos dimórficos en el complejo Discocyrtus prospicuus (Arachnida: Opiliones: Gonyleptidae): una aproximación desde la morfometría geométrica

Hernández

Acosta

2021

Rev.Mex.Biodiv.

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Can body traits, other than wings, reflect the flight ability of Triatominae bugs?

Cited by 17 publications

References 73 publications

Morphometric variability among the species of the Sordida subcomplex (Hemiptera: Reduviidae: Triatominae): evidence for differentiation across the distribution range of Triatoma sordida

Morphometric variability among the species of the Sordida subcomplex (Hemiptera: Reduviidae: Triatominae): evidence for differentiation across the distribution range of Triatoma sordida

Assessment of Shape Variation Patterns in Triatoma infestans (Klug 1834) (Hemiptera: Reduviidae: Triatominae): A First Report in Populations from Bolivia

Caracterización del dimorfismo sexual y reconocimiento de machos dimórficos en el complejo Discocyrtus prospicuus (Arachnida: Opiliones: Gonyleptidae): una aproximación desde la morfometría geométrica

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