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Abstract:

The epidemiological importance of Chagas disease vectors largely depends on their spreading ability and adaptation to domestic habitats. Triatoma patagonica is a secondary vector of Chagas disease endemic of Argentina, and it has been found colonizing domiciles and most commonly peridomiciliary structures in several Argentine provinces and morphological variation along its distribution range have been described. To asses if population differentiation represents geographic variants or true biological species, multiple genetic and phenotypic approaches and laboratory cross-breeding were performed in T. patagonica peridomestic populations. Analyses of chromatic variation of forewings, their size and the content of C-heterochromatin on chromosomes revealed that populations are structured following a North-South latitudinal variation. Cytochrome c oxidase I mitochondrial gene (COI) nucleotide analysis showed a mean genetic distance of 5.2% between the most distant populations. The cross-breeding experiments suggest a partial reproductive isolation between some populations with 40% of couples not laying eggs and low hatching efficiency. Our findings reveal phenotypic and genetic variations that suggest an incipient differentiation processes among T. patagonica populations with a pronounced phenotypic and genetic divergence between the most distant populations. The population differentiation here reported is probably related to differential environmental conditions and it could reflect the occurrence of an incipient speciation process in T. patagonica. © 2016 Nattero et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Registro:

Documento: Artículo
Título:Morphological and genetic differentiation within the southernmost vector of chagas disease: Triatoma patagonica (hemiptera-reduviidae)
Autor:Nattero, J.; Pita, S.; Calleros, L.; Crocco, L.; Panzera, Y.; Rodríguez, C.S.; Panzera, F.
Filiación:Cátedra de Introducción A la Biología, Facultad de Ciencias Exactas Físicas Y Naturales, Inst. de Investigaciones Biologicas Y Tecnologicas -IIByT (CONICET-Universidad Nacional de Cordoba), Avda. Vélez Sarsfield, piso 2, Córdoba, Argentina
Laboratorio de Eco-Epidemiología, Instituto de Ecología, Genet. Y Evolucion de Buenos Aires, CONICET, EGE, FCEyN, UBA Intendente Guiraldes 2160 - Cd. Univ., Pabellón 2, Buenos Aires, Argentina
Sección Genética Evolutiva, Facultad de Ciencias, Universidad de la República. Iguá, Montevideo, Uruguay
Palabras clave:Article; Chagas disease; chromosome analysis; controlled study; cross breeding; cytochrome c oxidase I mitochondrial gene; DNA sequence; genetic distance; genetic variability; heterochromatin; insect vector; mitochondrial gene; morphological trait; nonhuman; phenotype; population differentiation; Triatoma; Triatoma patagonica; anatomy and histology; animal; animal dispersal; Chagas disease; genetic variation; genetics; physiology; reproductive isolation; transmission; Triatoma; wing; Animal Distribution; Animals; Chagas Disease; Genetic Variation; Insect Vectors; Phenotype; Reproductive Isolation; Sequence Analysis, DNA; Triatoma; Wings, Animal
Año:2016
Volumen:11
Número:12
DOI: http://dx.doi.org/10.1371/journal.pone.0168853
Título revista:PLoS ONE
Título revista abreviado:PLoS ONE
ISSN:19326203
CODEN:POLNC
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19326203_v11_n12_p_Nattero

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Citas:

---------- APA ----------
Nattero, J., Pita, S., Calleros, L., Crocco, L., Panzera, Y., Rodríguez, C.S. & Panzera, F. (2016) . Morphological and genetic differentiation within the southernmost vector of chagas disease: Triatoma patagonica (hemiptera-reduviidae). PLoS ONE, 11(12).
http://dx.doi.org/10.1371/journal.pone.0168853
---------- CHICAGO ----------
Nattero, J., Pita, S., Calleros, L., Crocco, L., Panzera, Y., Rodríguez, C.S., et al. "Morphological and genetic differentiation within the southernmost vector of chagas disease: Triatoma patagonica (hemiptera-reduviidae)" . PLoS ONE 11, no. 12 (2016).
http://dx.doi.org/10.1371/journal.pone.0168853
---------- MLA ----------
Nattero, J., Pita, S., Calleros, L., Crocco, L., Panzera, Y., Rodríguez, C.S., et al. "Morphological and genetic differentiation within the southernmost vector of chagas disease: Triatoma patagonica (hemiptera-reduviidae)" . PLoS ONE, vol. 11, no. 12, 2016.
http://dx.doi.org/10.1371/journal.pone.0168853
---------- VANCOUVER ----------
Nattero, J., Pita, S., Calleros, L., Crocco, L., Panzera, Y., Rodríguez, C.S., et al. Morphological and genetic differentiation within the southernmost vector of chagas disease: Triatoma patagonica (hemiptera-reduviidae). PLoS ONE. 2016;11(12).
http://dx.doi.org/10.1371/journal.pone.0168853