掠食性虫Amblyseius orientalis更喜欢蛋阶段和低密度的Carpoglyphus lactis猎物
Jiaxing Wei1, Yifan Liu1, Fujing Sheng2
1Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
Experimental & applied acarology
|June 27, 2023
概括
优化Amblyseius orientalis (A. orientalis) 掠食性虫的养殖需要仔细选择猎物. 这项研究发现,A. orientalis更喜欢蛋而不是成年人,猎物密度会影响繁殖,这对于大规模生产至关重要.
科学领域:
- 农业昆虫学 农业昆虫学
- 生物控制 生物控制
- 捕食者和猎物的动力学
背景情况:
- 东方 (A. orientalis) 是一个关键的掠食虫,用于控制中国果树上的蜘蛛虫.
- 东方的商业生产依赖于大规模养,使用储存虫Carpoglyphus lactis (C. lactis) 作为猎物.
- 在大规模培养中,优化猎物-掠食者比率对于有效的A. orientalis种群增加至关重要.
研究的目的:
- 为了研究A. orientalis在C. lactis.不同发育阶段的掠食能力.
- 为了确定猎物密度和发育阶段对A. orientalis繁殖和生育能力的影响.
- 为了确定A. orientalis大规模生产的最佳条件.
主要方法:
- 评估A. orientalis成人的C. lactis蛋和不同密度的成人的掠食率.
- 计算A. orientalis对C. lactis蛋与成人的偏好指数.
- 评估A. orientalis在不同发育阶段和密度的C. lactis养时的繁殖和生育能力.
主要成果:
- A. orientalis在成年C. lactis身上表现出最大的掠食率为2.21/天,在C. lactis蛋身上表现出最大的掠食率为45.07/天.
- 偏好指数表明,对C. lactis蛋 (0.4312) 的偏好比对成人的偏好更强 (-0.9249).
- 繁殖发生在卵或双胞胎细胞中,但生育能力取决于密度:较高的双胞胎细胞密度降低了生育能力,而较高的卵密度增加了它.
结论:
- 猎物的发育阶段显著影响A. orientalis的掠食率和偏好,其中蛋受到青.
- 生殖成功和生育能力是由猎物的密度和发育阶段调节的,而不仅仅是猎物的可用性.
- 战略性选择猎物密度和发育阶段 (特别是蛋) 对于提高A. orientalis在商业环境中的生产效率至关重要.
更多相关视频
12:14Exploring Life History Choices: Using Temperature and Substrate Type as Interacting Factors for Blowfly Larval and Female Preferences
Published on: November 17, 2023
1.4K
10:17Laboratory Protocol for Genetic Gut Content Analyses of Aquatic Macroinvertebrates Using Group-specific rDNA Primers
Published on: October 5, 2017
8.9K
相关概念视频
Predator-Prey Interactions
16.3K
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
16.3K
Epiphytes, Parasites, and Carnivores
13.1K
Plants often form mutualistic relationships with soil-dwelling fungi or bacteria to enhance their roots’ nutrient uptake ability. Root-colonizing fungi (e.g., mycorrhizae) increase a plant’s root surface area, which promotes nutrient absorption. While root-colonizing, nitrogen-fixing bacteria (e.g., rhizobia) convert atmospheric nitrogen (N2) into ammonia (NH3), making nitrogen available to plants for various biological functions. For example, nitrogen is essential for the...
13.1K
