IBBEA   24401
INSTITUTO DE BIODIVERSIDAD Y BIOLOGIA EXPERIMENTAL Y APLICADA
Unidad Ejecutora - UE
artículos
Título:
Ecological and physiological thermal niches in vectors of Chagas disease
Autor/es:
DE LA VEGA, G.J.; SCHILMAN, P.E.
Revista:
MEDICAL AND VETERINARY ENTOMOLOGY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2018 vol. 32 p. 1 - 13
ISSN:
0269-283X
Resumen:
Inorder to assess how triatomines (Hemiptera, Reduviidae), Chagas disease vectors,are distributed along Latin America, we analyzed the relationship between theecological niche and the limits of the physiological thermal niche in sevenspecies of triatomines. We combined two methodological approaches: speciesdistribution models, and physiological tolerances. First, we modeled theecological niche and identified the most important abiotic factor for theirdistribution. Then, thermal tolerance limits were analyzed by measuring CTmax,CTmin, upper lethal temperature, and "chill-coma recovery time".Finally, we used phylogenetic independent contrasts to analyze the link betweenlimiting factors and the thermal tolerance range for the assessment ofecological hypotheses which provide a different outlook for thegeo-epidemiology of Chagas disease. In triatomines, thermo-tolerance rangeincreases with increasing latitude mainly due to better cold tolerances, suggestingan effect of thermal selection. In turn, physiological analyses show that speciesreaching southernmost areas have a higher thermo-tolerance than those with tropicaldistributions, denoting that thermo-tolerance is limiting the southerndistribution. Understanding the latitudinal range along its physiologicallimits of disease vectors, may prove useful to test ecological hypotheses, and improvestrategies and efficiency of vector control at the local and regional levels.