TY - JOUR
T1 - Morphological and morphometric analysis of scutella of six species and two subspecies of Triatoma (Hemiptera: Reduviidae) in Mexico
AU - Rivas, Nancy
AU - Sánchez-Cordero, Víctor
AU - Camacho, Alejandro D.
AU - Córdoba-Aguilar, Alejandro
AU - Alejandre-Aguilar, Ricardo
N1 - Publisher Copyright:
© 2017, John Wiley and Sons Inc. All rights reserved.
PY - 2017/12
Y1 - 2017/12
N2 - Morphological characters can be used to distinguish the vast majority of triatomine species, but the existence of high levels of phenotypic plasticity and recently diverged species can lead to erroneous determinations. To approach this problem, we analyzed the male and female morphologies of the scutella of Triatoma barberi, T. dimidiata, T. lecticularia, T. mexicana, T. recurva, T. rubida, and two sub-species, T. protracta protracta and T. protracta nahuatlae. Scutellum samples were observed by scanning electron microscopy and subjected to morphological analysis and morphometric investigation using a canonical discriminant analysis. The results revealed differences primarily in central depression shape, posterior process, and vestiture. We observed clear dimension-based differences in scutellum morphometry in all the taxa under study, providing sound evidence for species and subspecies differentiation. On the other hand, there is no difference between sexes in T. lecticularia, T. protracta protracta, and T. protracta nahuatlae. Our methodology can be implemented to differentiate species of the genus Triatoma.
AB - Morphological characters can be used to distinguish the vast majority of triatomine species, but the existence of high levels of phenotypic plasticity and recently diverged species can lead to erroneous determinations. To approach this problem, we analyzed the male and female morphologies of the scutella of Triatoma barberi, T. dimidiata, T. lecticularia, T. mexicana, T. recurva, T. rubida, and two sub-species, T. protracta protracta and T. protracta nahuatlae. Scutellum samples were observed by scanning electron microscopy and subjected to morphological analysis and morphometric investigation using a canonical discriminant analysis. The results revealed differences primarily in central depression shape, posterior process, and vestiture. We observed clear dimension-based differences in scutellum morphometry in all the taxa under study, providing sound evidence for species and subspecies differentiation. On the other hand, there is no difference between sexes in T. lecticularia, T. protracta protracta, and T. protracta nahuatlae. Our methodology can be implemented to differentiate species of the genus Triatoma.
KW - Chagas disease vectors
KW - Morphology
KW - Morphometry
KW - Scanning electron microscopy
KW - Scutellum
KW - Triatoma
UR - http://www.scopus.com/inward/record.url?scp=85044773329&partnerID=8YFLogxK
U2 - 10.1111/jvec.12271
DO - 10.1111/jvec.12271
M3 - Artículo
SN - 1081-1710
VL - 42
SP - 308
EP - 318
JO - Journal of Vector Ecology
JF - Journal of Vector Ecology
IS - 2
ER -