CEFE, Univ Montpellier, CNRS, EPHE, IRD, Univ Paul Valéry Montpellier 3, Montpellier, France.
Pest Manag Sci. 2020 Nov;76(11):3711-3719. doi: 10.1002/ps.5920. Epub 2020 Jun 11.
Analysis of the poorly explored food webs of henhouse-dwelling arthropods would improve biological control against the poultry red mite (PRM) Dermanyssus gallinae (De Geer). This study aimed to identify trophic links among native predatory arthropods, PRM, and alternative preys. In vitro predation tests were carried out to assess (i) the ability of native predators to feed on PRM juvenile and adult stages in two physiological statuses (unfed and freshly blood-fed) in the absence of any physical barrier, (ii) predator preferences between PRM and astigmatic mites, and (iii) predation interactions between PRM predators.
Ten arthropod taxa fed on PRM with predation rates ranging from 4% to 95% in our experimental conditions. They belonged to (i) Acari: Androlaelaps casalis (Berlese), Cheyletus spp., Macrocheles muscaedomesticae (Scopoli), M. penicilliger (Berlese), Parasitus fimetorum (Berlese), Dendrolaelaps spp. and Uroobovella fimicola (Berlese); (ii) other Arachnida: Lamprochernes nodosus (Schrank) (Pseudoscorpionida) and a linyphiid spider; and (iii) Insecta: Lyctocoris campestris (Fabricius). These predators varied in their preference for PRM stages and physiological statuses (unfed or freshly blood-fed). When given a choice, most predators preferred to feed on PRM than astigmatic mites. Bidirectional predation occurred within two pairs of PRM predators (M. penicilliger-Lamprochernes nodosus and A. casalis-Cheyletus spp.), and M. penicilliger had a 100% predation rate on A. casalis.
Our study highlights the potential of various arthropod predators occurring naturally in poultry houses for conservation and augmentative biological control of PRM. Predation interactions between these predators should be accounted for before developing biocontrol agents against PRM. © 2020 Society of Chemical Industry.
分析鸡舍中探索较少的节肢动物食物网将有助于改善对家禽红螨（PRM）Dermanyssus gallinae（De Geer）的生物防治。本研究旨在确定本地捕食性节肢动物、PRM 和替代猎物之间的营养联系。进行了体外捕食测试，以评估（i）在没有任何物理屏障的情况下，在两种生理状态（未进食和刚吸血）下，本地捕食者对 PRM 幼体和成虫阶段的摄食能力，（ii）PRM 和畸形螨之间的捕食者偏好，以及（iii）PRM 捕食者之间的捕食相互作用。
在我们的实验条件下，有 10 个节肢动物类群以 4%至 95%的捕食率摄食 PRM。它们属于（i）节肢动物：Androlaelaps casalis（Berlese），Cheyletus spp.，Macrocheles muscaedomesticae（Scopoli），M. penicilliger（Berlese），Parasitus fimetorum（Berlese），Dendrolaelaps spp.和 Uroobovella fimicola（Berlese）；（ii）其他蛛形纲动物：Lamprochernes nodosus（Schrank）（Pseudoscorpionida）和一种狼蛛；以及（iii）昆虫：Lyctocoris campestris（Fabricius）。这些捕食者对 PRM 阶段和生理状态（未进食或刚吸血）的偏好程度不同。当有选择时，大多数捕食者更喜欢捕食 PRM 而不是畸形螨。在两对 PRM 捕食者（M. penicilliger-Lamprochernes nodosus 和 A. casalis-Cheyletus spp.）之间发生了双向捕食，并且 M. penicilliger 对 A. casalis 的捕食率为 100%。
本研究强调了在鸡舍中自然发生的各种节肢动物捕食者在保护和增强 PRM 的生物防治方面的潜力。在开发针对 PRM 的生物防治剂之前，应考虑这些捕食者之间的捕食相互作用。 © 2020 化学工业协会。
