Effect of host density, temperature, and photoperiod on the fitness of Anagyrus kamali, a parasitoid of the hibiscus mealybug Maconellicoccus hirsutus
Effect of host density, temperature, and photoperiod on the fitness of Anagyrus kamali, a parasitoid of the hibiscus mealybug Maconellicoccus hirsutus
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寄主密度、温度和光周期对木槿粉蚧寄生蜂 Anagyrus kamali 适应度的影响
DOI：
10.1046/j.1570-7458.2000.00689.x
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发表时间：
2000
影响因子：
1.9
通讯作者：
R. K. Stewart
中科院分区：
文献类型：
--
作者：
L. Sagarra;Charles Vincent;N. Peters;R. K. Stewart
研究了寄生蜂kamali Moursi（膜翅目：蜂科）的寄生性能与寄主密度、温度和光周期的关系，目的是在生物防治的背景下优化大规模饲养系统。在2-100个密度范围内，被寄生的木芙蓉粉蚧（HMB）， Maconellicoccus hirsutus Green[同翅目：假球虫科]的寄主数量在固定时间条件下对应II - III型功能反应，在可变时间条件下对应III型功能反应。无论寄主密度如何，26%的受精卵能羽化后代，性别比为0.49±0.102 （M/F）。测定了6种非生物组合(即2种温度（26±2°C和32±2°C）和3种光周期（L0:D24、L12:D12、L24:D0）下的产卵量和产卵期。温度和光周期条件对终生繁殖力和生殖寿命有显著影响。在26±2°C， L0:D24条件下，雌寄生蜂终生产卵量最佳，平均产卵量为116.1±17.43个。在32±2°C条件下，L24:D0和L12:D12，平均产蛋量分别为79.4±34.57和85.8±35.81。生殖寿命在26±2°C， L0:D24, 12±4.85 d时达到最大值。因为A. kamali寄生虫可以在没有光线的情况下进行最佳饲养，这可能会节省大量的能源成本。
The peformance of the parasitoid Anagyrus kamali Moursi [Hymenoptera: Encyrtidae], as a function of host density, temperature, and photoperiod was investigated with the objective to optimize a mass‐rearing system in the context of a biological control program. The number of hosts parasitized at densities varying from 2–100 hibiscus mealybug (HMB), Maconellicoccus hirsutus Green [Homoptera: Pseudococcidae], corresponded to a type II‐III functional response in fixed‐time conditions and a type III in variable‐time conditions. Twenty‐six percent of the oviposited eggs led to progeny emergence with a sex ratio of 0.49±0.102 (M/F), regardless of host density. Fecundity and oviposition period under six abiotic combinations (i.e., two temperatures (26±2 °C and 32±2 °C) and three photoperiods (L0:D24, L12:D12, L24:D0)) were measured. Lifetime fecundity and reproductive life were significantly affected by temperature and photoperiod conditions. Optimum female parasitoid lifetime fecundity was attained at 26±2 °C, L0:D24 with an average of 116.1±17.43 eggs. At 32±2 °C, L24:D0 and L12:D12, an average of 79.4±34.57 and 85.8±35.81 eggs were laid, respectively. Reproductive longevity was maximal at 26±2 °C, L0:D24 with 12±4.85 days of oviposition. Because the parasite A. kamali can be reared optimally without light, this may save tremendous energy costs.