Genetic diversity in peridomiciliary populations of Triatoma mexicana (Hemiptera: Reduviidae: Triatominae) in central Mexico

Rivas, Nancy; Martínez‐Hernández, Fernando; Antonio-Campos, Alberto; Sánchez‐Cordero, Víctor; Alejandre‐Aguilar, Ricardo

doi:10.1007/s00436-022-07608-2

Cited by 5 publications

(5 citation statements)

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“…This proposal is also supported by the noticeable genetic variation among specimens of a population of T. mexicana from Hidalgo (morphologically typical) and those from Guanajuato (Espinoza et al 2013). That genetic variability was also detected in a recent study where 10 populations of T. mexicana from 10 localities in Queretaro, Hidalgo, and Guanajuato (including those studied on this current study) were analyzed with Cyt-b gene as a genetic marker (Rivas et al 2022).…”

Section: Discussionsupporting

confidence: 81%

“…One of these is Triatoma mexicana HerrichSchaeffer, which is distributed in four states (Guanajuato, Hidalgo, San Luis Potosí, and Querétaro; Fig. 1) (Rivas et al 2021, 2022). Triatoma mexicana is an important vector in some areas of San Luis Potosí and Guanajuato and is the most distributed and main vector of T. cruzi in Hidalgo and Querétaro (Villagrán-Herrera et al 2018, Buekens et al 2020, Gámez-Hidalgo 2020, Chico-Avelino et al 2022).…”

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confidence: 99%

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Biological aspects of crosses between populations of Triatoma mexicana (Hemiptera: Reduviidae: Triatominae)

Martínez-Ibarra

Villagrán-Herrera

Diego-Cabrera

et al. 2023

Journal of Medical Entomology

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We examined the degree of reproductive isolation in four populations of Triatoma mexicana Herrich-Schaeffer from Mexico along with fertility and the segregation of morphological characteristics in two generations of offspring from crosses between these populations. The percentage of couples with (fertile) offspring was high among all sets of crosses between cohorts from Peñamiller, Meztitlán, and Orizabita. It was low in crosses involving a cohort from Tierra Blanca, mainly in crosses with Meztitlán. Among sets of crosses involving Tierra Blanca specimens, whole first-generation (F1) individuals were morphologically similar to the specimens from other locations. All F1 individuals of crosses involving Peñamiller looked like Peñamiller. However, in crosses between F1 and F1 progeny of parental crosses, alleles for size, overall color, length of head, ante and post ocular distance, and humeral angle apparently had Mendelian dominant/recessive relationships. The cohorts from Peñamiller and Meztitlán seemed to be dominant with respect to Orizabita and Tierra Blanca. Results indicated that cohorts from Peñamiller, Meztitlán, and Orizabita were not reproductively isolated. In contrast, Tierra Blanca was reproductively isolated from the other three populations of T. mexicana and is apparently undergoing an early divergence process of speciation for allopatry.

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Section: Discussionsupporting

confidence: 81%

mentioning

confidence: 99%

Biological aspects of crosses between populations of Triatoma mexicana (Hemiptera: Reduviidae: Triatominae)

Martínez-Ibarra

Villagrán-Herrera

Diego-Cabrera

et al. 2023

Journal of Medical Entomology

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“…Due to their high mutation rates and high polymorphism levels, microsatellite loci are suitable for the analysis of relatively recent genetic events in populations, rather than evolutionary events in the distant past (Coates et al, 2009). The Cytb gene is used in many studies of the genetic diversity and genetic structure of Myriapoda, and even other arthropod groups (Cao & Wu, 2019; Men et al, 2017; Rivas et al, 2022; Xu et al, 2022). For this study, the genetic diversity and gene flow of S. mutilans were studied using mitochondrial Cytb sequences and eight novel microsatellite loci.…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity and gene flow of the soil arthropod (Scolopendra mutilans) in urban landscapes: The roles of rivers, mountains and fragmentation

Xu,

Zhou,

et al. 2023

Insect Conserv Diversity

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Soil invertebrates are a major element of soil biodiversity, which play critical roles in soil ecosystems. However, the impacts of urban landscapes on the genetic diversity and gene flows of soil arthropods remain unclear. Here, we studied the genetic diversity and gene flow of Scolopendra mutilans in an urban area using mitochondrial Cytb genes and eight novel microsatellite loci. A total of 22 haplotypes and 24 variation sites were identified based on 556 bp Cytb sequences from 84 individuals of five populations in Nanjing, Jiangsu Province, China. There were 5.63–8.00 alleles in the average of eight microsatellites found in the S. mutilans arthropod populations, which showed high genetic diversity in urban landscapes. There was no correlation between the natural habitat size and genetic diversity of S. mutilans. The global Fst value based on microsatellites was 0.115, which suggested a medium genetic differentiation and population isolation. The genetic structure of S. mutilans might be affected by urbanisation, as urban patches might hinder gene flow between populations. Ecological corridors preserved in cities might serve as pathways for population migration, which increases gene flow. The gene flows of S. mutilans might not be hindered by natural barriers within cities, as there were strong relationships between populations separated by rivers. These results may contribute to the conservation of S. mutilans diversity and elucidate its adaptation to urbanisation.

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“…This finding suggests several possible scenarios, one being that this species was passively introduced, such as in the recently reported case of Triatoma infestans in Mexico 5 , and another being that this species is present in at least one neighboring state. The latter scenario is most likely related to the species’ presence in Queretaro State, which borders Hidalgo to the south and Guanajuato to the north, and where T. longipennis and T. mexicana have already been found 13 . Nevertheless, future studies are necessary to expand the search area and conduct a phylogeographic analysis that will allow the dynamics of this triatomine species to be elucidated with respect to different regions where its presence has been reported.…”

mentioning

confidence: 99%

“…The presence of T. barberi , T. dimidiata , T. mexicana , and T. gerstaeckeri has been commonly described in Hidalgo. However, recent studies have also provided morphological and phylogenetic evidence of the presence of the cryptic species T. mexicana 13 and T. pallidipennis 15 . Thus, with the added presence of T. longipennis , there are currently eight known species of triatomines in Hidalgo, with several being of public health importance, such as T. barberi , T. dimidiata , T. mexicana 6 , T. longipennis 7 , and T. pallidipennis 15 .…”

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confidence: 99%

First record of Triatoma longipennis, Usinger, 1939 (Hemiptera: Reduviidae: Triatominae) in Tecozautla, Hidalgo

Rivas¹,

Antonio-Campos²,

Noguéz-García

et al. 2023

Rev. Soc. Bras. Med. Trop.

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Background: We report the presence of Triatoma longipennis for the first time in two localities in Hidalgo, Mexico. Methods: This study was conducted at Tecozautla municipality, Hidalgo. Collection was performed in April 2022. Results: We collected eight triatomines from Guadalupe: two fourth-instar nymphs, three fifth-instar nymphs, one female, and two males. In San Miguel Caltepantla, a female was collected inside a dwelling. One sample tested positive for Trypanosoma cruzi . Conclusions: These findings suggest the need to investigate the dynamics of this species with respect to the inhabitants of the study area.

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Genetic diversity in peridomiciliary populations of Triatoma mexicana (Hemiptera: Reduviidae: Triatominae) in central Mexico

Cited by 5 publications

References 54 publications

Biological aspects of crosses between populations of Triatoma mexicana (Hemiptera: Reduviidae: Triatominae)

Biological aspects of crosses between populations of Triatoma mexicana (Hemiptera: Reduviidae: Triatominae)

Genetic diversity and gene flow of the soil arthropod (Scolopendra mutilans) in urban landscapes: The roles of rivers, mountains and fragmentation

First record of Triatoma longipennis, Usinger, 1939 (Hemiptera: Reduviidae: Triatominae) in Tecozautla, Hidalgo

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