Abundant Ecological Messages from Temperature-dependent Population-level Models for Exponential Data

文献类型： 外文期刊

第一作者： Wu, Fuan

作者： Wu, Fuan;Wu, Tao

作者机构：

关键词： Ecological messages;Temperature-dependent Model;Population level;Tetranychus cinnabarinus

期刊名称：ICMS2010: PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON MODELLING AND SIMULATION, VOL 4: MODELLING AND SIMULATION IN BIOLOGY, ECOLOGY & ENVIRONMENT

ISSN：

年卷期： 2010 年

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收录情况： SCI

摘要： Temperature is a pivotal factor that influences the course of life, specifically the rate of its change-physiological time. Thermal time provides a measure of physiological time as it relates to many poikilothermic species of plants and invertebrate animals. Most poikilothermic species are adapted to particular temperature ranges and temperature is often a major environmental factor influencing their distribution. Within those ranges, as the environmental temperature decreases, their rates of development slow and, if the temperature falls low enough, development will cease at their lower developmental (base) temperature. As temperature increases, their rates of development increase up to a temperature optimum, above which they again decrease and eventually cease at their temperature maximum. Such a relationship between developmental rate and temperature can often be divided into three bounds. In the bound of low temperatures, this rate increased quickly with the temperatures rise, then it is often close to linear during the intermediate temperatures while it hard decreases with temperature rise in the bound of high temperature. Moreover the developmental rate curve always skews to the low-temperature part. The above mentioned phenomenon can often be characterized mathematically as the non-linear models of temperature-developmental rate, as based on the credible physiological and biochemical process. As a result of these models containing abundant ecological messages, they are widely used in many areas of life sciences. Among these non-linear models, 'Wang-Lan-Ding' model with seven parameters is the appropriate. Inappropriate fitting methods, however, brought frequently about fallacious estimation to parameters of this model, and more unfortunately, these can further result in non-realistic ecological conclusions. The present study provides for considerable information on the ecological aspects by appropriate methods to fit the 'Wang-Lan-Ding' model with seven parameters based on the population specific data from the carmine spider mite Tetranychus cinnabarinus, which be bred by mulberry under laboratory conditions. Results suggest that the high and low temperature more than optimum temperature-bound has different inhibitions towards the various life cycle stages of the population. The population in extreme temperatures, demonstrated resistance to temperature, there are also significant differences in the reproductive and developmental stages. These results are expected to explain that the mechanism of the population size fluctuations with the oscillation temperature in winter.

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