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17 July 2023 Crossing experiments detect partial reproductive isolation among populations of Triatoma longipennis (Hemiptera: Reduviidae: Triatominae)
José Alejandro Martínez-Ibarra, Benjamín Nogueda-Torres, Tzintli Meraz-Medina, Gumercindo Goicochea del Rosal
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Abstract

Chagas disease is an important vector-borne disease endemic in Mexico. Of the 33 triatomine species found in Mexico, Triatoma longipennis (Usinger) is considered among the most important because of its infection indices, capacity for transmitting Trypanosoma cruzi (Chagas), and its distribution areas. Here, we describe the results of a reproductive isolation analysis among 5 populations of T. longipennis collected from representative areas of Mexico. Fertility and segregation of morphological characteristics were examined in two generations of hybrids.The percentage of pairs with (fertile) offspring varied from 30% to 100% in the parental crosses, while these values varied from 0 to 100% in the intersite crosses. Our results indicate partial reproductive isolation among these populations. These findings shed light on the potential presence of a cryptic species complex of T. longipennis in Mexico.

Graphical Abstract

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José Alejandro Martínez-Ibarra, Benjamín Nogueda-Torres, Tzintli Meraz-Medina, and Gumercindo Goicochea del Rosal "Crossing experiments detect partial reproductive isolation among populations of Triatoma longipennis (Hemiptera: Reduviidae: Triatominae)," Journal of Medical Entomology 60(5), 998-1007, (17 July 2023). https://doi.org/10.1093/jme/tjad087
Received: 23 February 2023; Accepted: 22 June 2023; Published: 17 July 2023
JOURNAL ARTICLE
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KEYWORDS
Chagas disease vector
cryptic species complex
Mexico
reproductive isolation
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