ANALYTICAL MODELS FOR LABORATORY POPULATIONS OF CALLOSOBRUCHUS-CHINENSIS AND CALLOSOBRUCHUS-MACULATUS (COLEOPTERA, BRUCHIDAE)
ANALYTICAL MODELS FOR LABORATORY POPULATIONS OF CALLOSOBRUCHUS-CHINENSIS AND CALLOSOBRUCHUS-MACULATUS (COLEOPTERA, BRUCHIDAE)
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DOI：
10.2307/4324
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发表时间：
1982-01-01
影响因子：
4.8
通讯作者：
BELLOWS, TS
中科院分区：
文献类型：
--
作者：
BELLOWS, TS
C的人口。和C.当用有限的食物供应培养时，斑点鱼显示出依赖于密度的生长限制。这些依赖密度的过程可以分为两类：在成虫阶段起作用的过程，它限制了幼虫阶段的新兵数量;在幼虫阶段起作用的过程，它限制了下一代成虫的数量。通过单代实验研究了这些过程。成虫阶段的竞争导致了较低的人均繁殖力和卵死亡率的增加。这些过程在两个物种中都以过度补偿的方式发挥作用，并且是生殖曲线中观察到的过度补偿的原因，在C中更为严重。maculatus比C. chinensis。在幼虫期的竞争是在两个物种的竞争类型。随着幼虫招募数量的增加，幸存者的数量达到一个平台期，其中C的幸存者数量最高。chinensis比C.斑点的密度依赖的分析模型被用来描述在幼虫和成人阶段的竞争的结果。然后，这些模型用于开发单个和2年龄组模型的人口增长为每个物种。两个物种的所有模型都显示出一种振荡的稳定平衡的方法; maculatus比C. chinensis。根据成虫和幼虫阶段的密度依赖性，讨论了模型的稳定性。这些结果与长期的研究结果进行了比较，这些物种的实验室种群动态的文献和模型的C。中国人与他们相比毫不逊色。发表了C.然而，斑，一般表现出更持久的周期性行为比在这里开发的模型所示。这些差异是由于不同的密度依赖性的反应，在成人和幼虫阶段所使用的以前的工人。
Populations of C. chinensis and C. maculatus show density-dependent restrictions on growth when cultured with a limited food supply. These density-dependent processes may be grouped into 2 categories: those acting during the adult stage, which restrict the number of recruits to the larval stage, and those acting during the larval stage, which restrict the number of adults in the next generation. The processes were investigated by single generation experiments. Competition in the adult stage resulted in lower per capita fecundity and increased egg mortality. The processes acted in an overcompensatory manner in both species and were the cause of the observed overcompensation in the reproduction curves, more severe in C. maculatus than in C. chinensis. Competition in the larval stages was of the contest type in both species. The number of survivors reaches a plateau as the number of larval recruits increases, where the number of survivors was highest for C. chinensis than for C. maculatus. Analytical models for density dependence are used to describe the outcomes of competition in the larval and adult stages. These models are then used to develop single and 2 age-class models for population growth for each species. All the models for both species showed an oscillatory approach to a stable equilibrium; the models for C. maculatus were less stable than those for C. chinensis. The stability properties of the models are discussed in the light of the density dependence shown in adult and larval stages. These results are compared with results of long-term studies on laboratory population dynamics of these species from the literature and models for C. chinensis compare favorably with them. Published long-term studies of C. maculatus, however, generally showed more sustained cyclical behavior than indicated by the models developed here. The differences are attributed to different density-dependent responses in the adult and larval stages used by previous workers.