Variability of the Biological Characteristics between<i>Meccus longipennis</i>(Usinger) (Hemiptera: Reduviidae) Populations under Laboratory Conditions

Martínez-Ibarra, José Alejandro; Nogueda‐Torres, Benjamín; Seda-Gaspar, Gustavo; Ambriz-Galván, Fausto; Cruz, Maria De Los Angeles Cardenas De La; Martínez-Vargas, Martha Cecilia

doi:10.3958/059.038.0409

Cited by 5 publications

(1 citation statement)

References 9 publications

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“…Studies of the cytochrome b (CytB) and cytochrome oxidase I (COI) genes indicate a relationship of T. recurva to the Phyllosoma complex and its closeness to M. longipennis (Pfeiler et al ). Both species share part of their geographical distribution, being sympatric in Sinaloa, Chihuahua, and Durango (Licón‐Trillo et al , Martinez‐Ibarra et al , ). However, despite sympatry, adults of both species are morphologically different (Lent and Wygodzinsky ).…”

Section: Introductionmentioning

confidence: 99%

Comparative egg morphology of six Meccus species and Triatoma recurva (Stål, 1868) Hemiptera: Reduviidae

Rivas¹,

Sánchez-Espíndola

Camacho³

et al. 2016

Journal of Vector Ecology

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We investigated the morphology and morphometry of eggs from the colonies of the Entomology Laboratory at ENCB-IPN belonging to six species of the genus Meccus and Triatoma recurva, using both light and scanning electron microscopy. Egg ornamentation is an important parameter to consider in the differentiation of species. Samples were observed under a scanning electron microscope. Measurements of fifty eggs per species included length, width, and opercular diameter, which were used for the morphometric analysis. The results showed that the seven species display a polygonal ornamentation dominated by hexagons; the operculum shows also a polygonal ornamental characteristic in each species. Morphometry provided valuable information for discriminating between closely related species of the genus Meccus and Triatoma recurva, a species akin to this group, thereby facilitating the complete discrimination of these species. Journal of Vector Ecology 41 (1): 135-141. 2016.

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Section: Introductionmentioning

confidence: 99%

Comparative egg morphology of six Meccus species and Triatoma recurva (Stål, 1868) Hemiptera: Reduviidae

Rivas¹,

Sánchez-Espíndola

Camacho³

et al. 2016

Journal of Vector Ecology

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Biological Characteristics of Geographically Isolated Populations of Meccus mazzottii (Hemiptera: Reduviidae) in Southern Mexico

Martínez-Ibarra

Nogueda‐Torres

Vargas-Llamas

et al. 2014

Journal of Insect Science

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Chagas disease, caused by Trypanosoma cruzi Chagas, is one of the most epidemiologically important vector-borne zoonoses in Mexico. Among the 32 reported triatomine species from Mexico, Meccus mazzottii (Usinger) (Hemiptera: Reduviidae) is one of the most important vectors of T. cruzi in the southern part of the country. Variability among populations of triatomines has been recorded for several species ( Meccus longipennis (Usinger) and Meccus pallidipennis (Stal)) that are closely related to M. mazzottii , showing an apparent influence of local environmental conditions on the biology of each population, which could modify the impact of vector control measurements. Therefore, this study sought to compare the biological features of populations of M. mazzottii from two geographically far apart areas that have similar environmental characteristics and to compare populations from close geographical areas that have different environmental characteristics. The mean longevity, percentages of mortality of nymphs, the total mean number of bloodmeals to molt (considered instar by instar), the mean number of eggs laid by females, and the percentage of hatched eggs were similar between the two localities that are geographically far apart but have similar environmental characteristics. On the other hand, important differences were noticed when a comparison was carried out on the two localities with similar environmental conditions with respect to that locality with different conditions, independent of geographic distance. Most of the studied parameters led us to conclude that the three studied populations are very highly influenced by local environmental conditions. The results of this study indicate the importance of studying the biological characteristics of local populations of triatomines to carry out specific control measurements, instead of using standard ones that could fail if they are not adapted to the target population.

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Crossing experiments detect partial reproductive isolation among populations of Triatoma longipennis (Hemiptera: Reduviidae: Triatominae)

Martínez-Ibarra,

Nogueda-Torres,

Meraz-Medina

et al. 2023

Journal of Medical Entomology

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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.

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Variability of the Biological Characteristics betweenMeccus longipennis(Usinger) (Hemiptera: Reduviidae) Populations under Laboratory Conditions

Cited by 5 publications

References 9 publications

Comparative egg morphology of six Meccus species and Triatoma recurva (Stål, 1868) Hemiptera: Reduviidae

Comparative egg morphology of six Meccus species and Triatoma recurva (Stål, 1868) Hemiptera: Reduviidae

Biological Characteristics of Geographically Isolated Populations of Meccus mazzottii (Hemiptera: Reduviidae) in Southern Mexico

Crossing experiments detect partial reproductive isolation among populations of Triatoma longipennis (Hemiptera: Reduviidae: Triatominae)

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