CEPAVE   05420
CENTRO DE ESTUDIOS PARASITOLOGICOS Y DE VECTORES
Unidad Ejecutora - UE
artículos
Título:
Invasion speeds of Triatoma dimidiata, vector of Chagas disease: An application of orthogonal polynomials method
Autor/es:
SÉBASTIEN GOURBIÈRE; TEWFIK MAHDJOUB; FRÉDÉRIC MENU; MOHAMMED MESK; JORGE RABINOVICH
Revista:
JOURNAL OF THEORETICAL BIOLOGY
Editorial:
ACADEMIC PRESS LTD-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2016 vol. 395 p. 126 - 143
ISSN:
0022-5193
Resumen:
Demographic processes and spatial dispersal ofTriatoma dimidiata, a triatomine species vector of Chagasdisease, are modeled by integrodifference equations to estimate invasion capacity of this species underdifferent ecological conditions. The application of the theory of orthogonal polynomials and the steepestdescent method applied to these equations, allow a good approximation of the abundance of the adultfemale population and the invasion speed. We show that: (1) under the same mean conditions ofdemography and dispersal, periodic spatial dispersal results in an invasion speed 2.5 times larger thanthe invasion speed when spatial dispersal is continuous; (2) when the invasion speed of periodic spatialdispersal is correlated to adverse demographic conditions, it is 34.7% higher as compared to a periodicdispersal that is correlated to good demographic conditions. From our results we conclude, in terms oftriatomine population control, that the invasive success of T. dimidiatamay be most sensitive to theprobability of transition from juvenile to adult stage. We discuss our main theoretical predictions in thelight of observed data in different triatomines species found in the literature.