Origin and Evolution of Triatominae

Weirauch, Christiane

doi:10.1007/978-3-030-64548-9_1

Cited by 3 publications

(1 citation statement)

References 35 publications

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“…The abundance of GATA repeats on the Y chromosome in all analyzed Triatomini species likely represents an ancestral trait of this tribe that is not shared with Rhodniini. Therefore, it can be used as a comparative genomic marker with the putative predatory ancestors of triatomines such as the Zelurus clade and the Opisthacidius genus, a genus closely related to Rhodniini [ 47 , 48 , 49 ]. Preliminary analyses on the reduviid Zelurus femoralis revealed enrichment of GATA and AG repeats in its Y chromosome, like in the Triatomini tribe species.…”

Section: Discussionmentioning

confidence: 99%

Differential Spreading of Microsatellites in Holocentric Chromosomes of Chagas Disease Vectors: Genomic and Evolutionary Implications

Panzera,

Cuadrado,

Mora

et al. 2023

Insects

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This study focused on analyzing the distribution of microsatellites in holocentric chromosomes of the Triatominae subfamily, insect vectors of Chagas disease. We employed a non-denaturing FISH technique to determine the chromosomal distribution of sixteen microsatellites across twenty-five triatomine species, involving five genera from the two principal tribes: Triatomini and Rhodniini. Three main hybridization patterns were identified: strong signals in specific chromosomal regions, dispersed signals dependent on microsatellite abundance and the absence of signals in certain chromosomal regions or entire chromosomes. Significant variations in hybridization patterns were observed between Rhodniini and Triatomini species. Rhodniini species displayed weak and scattered hybridization signals, indicating a low abundance of microsatellites in their genomes. In contrast, Triatomini species exhibited diverse and abundant hybridization patterns, suggesting that microsatellites are a significant repetitive component in their genomes. One particularly interesting finding was the high abundance of GATA repeats, and to a lesser extent AG repeats, in the Y chromosome of all analyzed Triatomini species. In contrast, the Y chromosome of Rhodniini species did not show enrichment in GATA and AG repeats. This suggests that the richness of GATA repeats on the Y chromosome likely represents an ancestral trait specific to the Triatomini tribe. Furthermore, this information can be used to elucidate the evolutionary relationships between Triatomini and other groups of reduviids, contributing to the understanding of the subfamily’s origin. Overall, this study provides a comprehensive understanding of the composition and distribution of microsatellites within Triatominae genomes, shedding light on their significance in the evolutionary processes of these species.

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Section: Discussionmentioning

confidence: 99%

Differential Spreading of Microsatellites in Holocentric Chromosomes of Chagas Disease Vectors: Genomic and Evolutionary Implications

Panzera,

Cuadrado,

Mora

et al. 2023

Insects

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Ultraconserved elements reconstruct the evolution of Chagas disease‐vectoring kissing bugs (Reduviidae: Triatominae)

Kieran

Gordon

Zaldívar‐Riverón

et al. 2021

Systematic Entomology

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Triatominae are the largest radiation of haematophagous species within the true bugs (Hemiptera) and the sole vectors of Trypanosoma cruzi Chagas, the causative agent of Chagas disease, a neglected human disease that affects millions. We used a combined ultraconserved element (UCE) and ribosomal dataset from ethanol‐preserved and pinned specimens in a museomics approach to elucidate the phylogenetic relationships among triatomines, including taxa of four of the five tribes with substantial representation of the Old World fauna. We conclude that: (i) Triatominae are monophyletic and Opisthacidius Berg is their predatory sister taxon; (ii) the three large genera (Rhodnius Stål, Triatoma Laporte and Panstrongylus Berg) are not monophyletic; (iii) Triatomini fall into nine well‐supported clades, only two of which are identical in composition to previously recognized groups; and (iv) the Old World clade is deeply nested within Triatomini. Ancestral character state reconstructions of specific character traits provide insights into the evolutionary history of Triatominae.

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Chapter 10: Olfactory-driven behaviours in kissing bugs

Lorenzo

2022

Sensory Ecology of Disease Vectors

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Origin and Evolution of Triatominae

Cited by 3 publications

References 35 publications

Differential Spreading of Microsatellites in Holocentric Chromosomes of Chagas Disease Vectors: Genomic and Evolutionary Implications

Differential Spreading of Microsatellites in Holocentric Chromosomes of Chagas Disease Vectors: Genomic and Evolutionary Implications

Ultraconserved elements reconstruct the evolution of Chagas disease‐vectoring kissing bugs (Reduviidae: Triatominae)

Chapter 10: Olfactory-driven behaviours in kissing bugs

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