A model for the development of Aedes (Stegomyia) aegypti as a function of the available food

We discuss the preimaginal development of the mosquito Aedes aegypti from the point of view of the statistics of developmental times and the final body-size of the pupae and adults. We begin the discussion studying existing models in relation to published data for the mosquito. The data suggest a de...

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Autores principales:	De Majo, María Sol, Fischer, Sylvia Cristina, Francisco, Diego Hernán, Natiello, Mario Alberto, Solari, Hernán Gustavo
Publicado:	2015
Materias:	Aedes aegypti Body-size Larvae maturation Statistics Time biological development body size food availability larva maturation modeling mosquito statistical analysis adult Article body weight data processing developmental stage dispersion female food deprivation food intake larval development male mathematical model mortality nonhuman pupation qualitative research quantitative study sensitivity analysis window model Aedes anatomy and histology animal biological model biomass food growth, development and aging physiology probability pupa time Animals Biomass Body Size Female Food Larva Male Models, Biological Probability Pupa Time Factors
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00225193_v365_n_p311_RomeoAznar http://hdl.handle.net/20.500.12110/paper_00225193_v365_n_p311_RomeoAznar
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00225193_v365_n_p311_RomeoAznar
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spelling	paper:paper_00225193_v365_n_p311_RomeoAznar2023-06-08T14:51:24Z A model for the development of Aedes (Stegomyia) aegypti as a function of the available food De Majo, María Sol Fischer, Sylvia Cristina Francisco, Diego Hernán Natiello, Mario Alberto Solari, Hernán Gustavo Aedes aegypti Body-size Larvae maturation Statistics Time biological development body size food availability larva maturation modeling mosquito statistical analysis adult Aedes aegypti Article body size body weight data processing developmental stage dispersion female food availability food deprivation food intake larval development male mathematical model mortality nonhuman pupation qualitative research quantitative study sensitivity analysis window model Aedes anatomy and histology animal biological model biomass food growth, development and aging larva physiology probability pupa time Aedes aegypti Aedes Animals Biomass Body Size Female Food Larva Male Models, Biological Probability Pupa Time Factors We discuss the preimaginal development of the mosquito Aedes aegypti from the point of view of the statistics of developmental times and the final body-size of the pupae and adults. We begin the discussion studying existing models in relation to published data for the mosquito. The data suggest a developmental process that is described by exponentially distributed random times. The existing data show as well that the idea of cohorts emerging synchronously is verified only in optimal situations created at the laboratory but it is not verified in field experiments. We propose a model in which immature individuals progress in successive stages, all of them with exponentially distributed times, according to two different rates (one food-dependent and the other food-independent). This phenomenological model, coupled with a general model for growing, can explain the existing observations and new results produced in this work. The emerging picture is that the development of the larvae proceeds through a sequence of steps. Some of the steps depend on the available food. While food is in abundance, all steps can be thought as having equal duration, but when food is scarce, those steps that depend on food take considerably longer times. For insufficient levels of food, increase in larval mortality sets in. As a consequence of the smaller rates, the average pupation time increases and the cohort disperses in time. Dispersion, as measured by standard deviation, becomes a quadratic function of the average time indicating that cohort dispersion responds to the same causes than delays in pupation and adult emergence. During the whole developmental process the larva grows monotonically, initially at an exponential rate but later at decreasing rates, approaching a final body-size. Growth is stopped by maturation when it is already slow. As a consequence of this process, there is a slight bias favoring small individuals: Small individuals are born before larger individuals, although the tendency is very weak. © 2014 Elsevier Ltd. Fil:De Majo, M.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fischer, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Francisco, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Natiello, M.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Solari, H.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00225193_v365_n_p311_RomeoAznar http://hdl.handle.net/20.500.12110/paper_00225193_v365_n_p311_RomeoAznar
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Aedes aegypti Body-size Larvae maturation Statistics Time biological development body size food availability larva maturation modeling mosquito statistical analysis adult Aedes aegypti Article body size body weight data processing developmental stage dispersion female food availability food deprivation food intake larval development male mathematical model mortality nonhuman pupation qualitative research quantitative study sensitivity analysis window model Aedes anatomy and histology animal biological model biomass food growth, development and aging larva physiology probability pupa time Aedes aegypti Aedes Animals Biomass Body Size Female Food Larva Male Models, Biological Probability Pupa Time Factors
spellingShingle	Aedes aegypti Body-size Larvae maturation Statistics Time biological development body size food availability larva maturation modeling mosquito statistical analysis adult Aedes aegypti Article body size body weight data processing developmental stage dispersion female food availability food deprivation food intake larval development male mathematical model mortality nonhuman pupation qualitative research quantitative study sensitivity analysis window model Aedes anatomy and histology animal biological model biomass food growth, development and aging larva physiology probability pupa time Aedes aegypti Aedes Animals Biomass Body Size Female Food Larva Male Models, Biological Probability Pupa Time Factors De Majo, María Sol Fischer, Sylvia Cristina Francisco, Diego Hernán Natiello, Mario Alberto Solari, Hernán Gustavo A model for the development of Aedes (Stegomyia) aegypti as a function of the available food
topic_facet	Aedes aegypti Body-size Larvae maturation Statistics Time biological development body size food availability larva maturation modeling mosquito statistical analysis adult Aedes aegypti Article body size body weight data processing developmental stage dispersion female food availability food deprivation food intake larval development male mathematical model mortality nonhuman pupation qualitative research quantitative study sensitivity analysis window model Aedes anatomy and histology animal biological model biomass food growth, development and aging larva physiology probability pupa time Aedes aegypti Aedes Animals Biomass Body Size Female Food Larva Male Models, Biological Probability Pupa Time Factors
description	We discuss the preimaginal development of the mosquito Aedes aegypti from the point of view of the statistics of developmental times and the final body-size of the pupae and adults. We begin the discussion studying existing models in relation to published data for the mosquito. The data suggest a developmental process that is described by exponentially distributed random times. The existing data show as well that the idea of cohorts emerging synchronously is verified only in optimal situations created at the laboratory but it is not verified in field experiments. We propose a model in which immature individuals progress in successive stages, all of them with exponentially distributed times, according to two different rates (one food-dependent and the other food-independent). This phenomenological model, coupled with a general model for growing, can explain the existing observations and new results produced in this work. The emerging picture is that the development of the larvae proceeds through a sequence of steps. Some of the steps depend on the available food. While food is in abundance, all steps can be thought as having equal duration, but when food is scarce, those steps that depend on food take considerably longer times. For insufficient levels of food, increase in larval mortality sets in. As a consequence of the smaller rates, the average pupation time increases and the cohort disperses in time. Dispersion, as measured by standard deviation, becomes a quadratic function of the average time indicating that cohort dispersion responds to the same causes than delays in pupation and adult emergence. During the whole developmental process the larva grows monotonically, initially at an exponential rate but later at decreasing rates, approaching a final body-size. Growth is stopped by maturation when it is already slow. As a consequence of this process, there is a slight bias favoring small individuals: Small individuals are born before larger individuals, although the tendency is very weak. © 2014 Elsevier Ltd.
author	De Majo, María Sol Fischer, Sylvia Cristina Francisco, Diego Hernán Natiello, Mario Alberto Solari, Hernán Gustavo
author_facet	De Majo, María Sol Fischer, Sylvia Cristina Francisco, Diego Hernán Natiello, Mario Alberto Solari, Hernán Gustavo
author_sort	De Majo, María Sol
title	A model for the development of Aedes (Stegomyia) aegypti as a function of the available food
title_short	A model for the development of Aedes (Stegomyia) aegypti as a function of the available food
title_full	A model for the development of Aedes (Stegomyia) aegypti as a function of the available food
title_fullStr	A model for the development of Aedes (Stegomyia) aegypti as a function of the available food
title_full_unstemmed	A model for the development of Aedes (Stegomyia) aegypti as a function of the available food
title_sort	model for the development of aedes (stegomyia) aegypti as a function of the available food
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00225193_v365_n_p311_RomeoAznar http://hdl.handle.net/20.500.12110/paper_00225193_v365_n_p311_RomeoAznar
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A model for the development of Aedes (Stegomyia) aegypti as a function of the available food

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