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4 November 2021 Biological parameters and estimation of the vectorial capacity of two subspecies of Triatoma protracta (Uhler) and their laboratory hybrids in Mexico
José Alejandro Martínez-Ibarra, Miguel Alejandro Cárdenas-Sosa, Oziel Dante Montañez-Valdez, J. Guadalupe Michel-Parra, Benjamín Nogueda-Torres
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Abstract

Chagas disease is one of the most important vector-borne diseases in Latin America. Studying the biological parameters of each vector species or subspecies contributes to our understanding of their epidemiologic importance. The aim of our study was to compare the biological parameters and start to estimate the vectorial capacity of Triatoma protracta protracta Ryckman, T. p. nahuatlae Ryckman, and their laboratory hybrids. Specifically, we estimated nine biological parameters to increase knowledge about the potential role of triatomine hybrids in the transmission of T. cruzi to reservoir hosts. Nine biological parameters related to the lifecycle, feeding and defecation patterns, number of females, fecundity, and egg eclosion rates in cohorts of T. p. protracta, T. p. nahuatlae, and their hybrids were evaluated and compared. Eight parameters (exception: number of laid eggs) indicated that T. p. nahuatlae was a potentially effective vector of T. cruzi. Our results showed that the hybrid cohorts had better fitness and could potentially have higher vectorial capacity than the parental cohorts. The outstanding characteristics of the hybrids found in our study could lead to an increase in the epidemiologic risks caused by transmission of T. cruzi to humans.

José Alejandro Martínez-Ibarra, Miguel Alejandro Cárdenas-Sosa, Oziel Dante Montañez-Valdez, J. Guadalupe Michel-Parra, and Benjamín Nogueda-Torres "Biological parameters and estimation of the vectorial capacity of two subspecies of Triatoma protracta (Uhler) and their laboratory hybrids in Mexico," Journal of Vector Ecology 46(2), 148-154, (4 November 2021). https://doi.org/10.52707/1081-1710-46.2.148
Received: 23 March 2021; Accepted: 19 May 2021; Published: 4 November 2021
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KEYWORDS
BIOLOGY
Chagas disease
hybrids
laboratory conditions
Mexico
Triatominae
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