Chagas vectors Panstrongylus chinai (Del Ponte, 1929) and Panstrongylus howardi (Neiva, 1911): chromatic forms or true species?
| Autor: | Jean-Pierre Dujardin, Anita G. Villacís, Marco I Orozco, Sebastián Pita, Soledad Santillán-Guayasamín, César A. Yumiseva, Katherine D Mosquera, Francisco Panzera, Mario J. Grijalva |
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| Přispěvatelé: | Villacís A. G., Dujardin J. P., Panzera Arballo Francisco, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología, Yumiseva C. A., Pita Mimbacas Sebastián, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología., Santillán‑Guayasamín S., Orozco M. I., Mosquera K. D., Grijalva M. J. |
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Entomology 030231 tropical medicine Allopatric speciation Zoology lcsh:Infectious and parasitic diseases 03 medical and health sciences Cytogenetics 0302 clinical medicine Animals Chagas Disease lcsh:RC109-216 Experimental hybridization Triatoma dimidiata Pathology Molecular Triatominae Geometric morphometry Panstrongylus Morphometrics biology Research biology.organism_classification Hemiptera Insect Vectors 030104 developmental biology Infectious Diseases Phenotype Reduviidae Ecological niche modeling Parasitology Ecuador Antennal phenotype |
| Zdroj: | COLIBRI Universidad de la República instacron:Universidad de la República Parasites & Vectors, Vol 13, Iss 1, Pp 1-21 (2020) Parasites & Vectors |
| Popis: | Background Chagas disease is a parasitic infection transmitted by “kissing bugs” (Hemiptera: Reduviidae: Triatominae) that has a huge economic impact in Latin American countries. The vector species with the upmost epidemiological importance in Ecuador are Rhodnius ecuadoriensis (Lent & Leon, 1958) and Triatoma dimidiata (Latreille, 1811). However, other species such as Panstrongylus howardi (Neiva, 1911) and Panstrongylus chinai (Del Ponte, 1929) act as secondary vectors due to their growing adaptation to domestic structures and their ability to transmit the parasite to humans. The latter two taxa are distributed in two different regions, they are allopatric and differ mainly by their general color. Their relative morphological similarity led some authors to suspect that P. chinai is a melanic form of P. howardi. Methods The present study explored this question using different approaches: antennal phenotype; geometric morphometrics of heads, wings and eggs; cytogenetics; molecular genetics; experimental crosses; and ecological niche modeling. Results The antennal morphology, geometric morphometrics of head and wing shape and cytogenetic analysis were unable to show distinct differences between the two taxa. However, geometric morphometrics of the eggs, molecular genetics, ecological niche modeling and experimental crosses including chromosomal analyses of the F1 hybrids, in addition to their coloration and current distribution support the hypothesis that P. chinai and P. howardi are separate species. Conclusions Based on the evidence provided here, P. howardi and P. chinai should not be synonymized. They represent two valid, closely related species. |
| Databáze: | OpenAIRE |
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