Influence of temperature and humidity on populations of Callosobruchus maculatus (Coleoptera: Bruchidae) and its parasitoid Dinarmus basalis (Pteromalidae) in two climatic zones of Burkina Faso
Influence of temperature and humidity on populations of Callosobruchus maculatus (Coleoptera: Bruchidae) and its parasitoid Dinarmus basalis (Pteromalidae) in two climatic zones of Burkina Faso
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DOI：
10.1017/s0007485300039213
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发表时间：
1996-12-01
影响因子：
1.9
通讯作者：
Credland, PF
中科院分区：
文献类型：
--
作者：
Ouedraogo, PA;Sou, S;Credland, PF
在非洲萨赫勒地区的长爪豇豆种子中发育出斑点豆象（Fabricius）。在瓦加杜古和博博迪乌拉索（布基纳法索）这两个气候条件不同的地区，在旱季期间对该物种的生殖活动及其后代的发育进行了研究。雌性成虫寿命的长度和发育时间随气候条件的变化而变化，这两个参数的最低值被发现在旱季结束时，温度和湿度增加。在这两个区域，在实验商店的豆象种群的密度变化进行了研究。研究开始时，豆象种群密度较低，随着温度和湿度的升高而增加。引入基甲螨成虫后，库内的基甲螨数量明显减少。斑点成虫D. basalis人口低，从12月到2月，增加时，温度和湿度变得更高。D.在博博迪乌拉索的basalis种群和寄生率高于瓦加杜古。实验室研究表明，生殖力、成虫寿命和发育时间取决于湿度。这项研究表明，当地的气候条件对寄生蜂的繁殖和发展的重要性，也在商店的豆象种群的控制。
Callosobruchus maculatus (Fabricius) develops in the seeds of Vigna unguiculata in the Sahel region of Africa. The reproductive activity of this species and the development of its offspring were studied during the dry season at Ouagadougou and Bobo Dioulasso (Burkina Faso), two zones with different climatic conditions. The length of imaginal life of the females and the developmental time varied with changes in climatic conditions, the lowest values for both parameters being found at the end of the dry season when temperature and humidity increased. In the two zones, variations in the density of the bruchid populations have been studied in experimental stores. The density of the bruchid population was low at the beginning of the study and increased when temperature and humidity rose. The introduction of Dinarmus basalis (Rondani) adults to the stores caused a significant reduction in the numbers of C. maculatus adults. The density of the D. basalis populations was low from December to February and increased when temperatures and then humidity became higher. The increase of the D. basalis population and the rate of parasitism were greater at Bobo Dioulasso than at Ouagadougou. Laboratory studies have demonstrated that fecundity, duration of adult life and developmental times depend on humidity. This study has shown the importance of local climatic conditions on parasitoid reproduction and development and also in the control of bruchid populations in stores.