天然和商业性昆虫病原线虫对甜菜根萤叶甲（鞘翅目：叩头甲科）的防治效果。
Efficacy of Naturally Occurring and Commercial Entomopathogenic Nematodes Against Sugar Beet Wireworm (Coleoptera: Elateridae).
机构信息
Department of Entomology, Plant Pathology and Nematology, University of Idaho, 875 Perimeter Drive, MS 2329, Moscow, ID, USA.
Department of Entomology, Plant Pathology and Nematology, University of Idaho, Aberdeen Research and Extension Center, Aberdeen, ID, USA.
出版信息
J Econ Entomol. 2021 Oct 13;114(5):2241-2244. doi: 10.1093/jee/toab140.
Wireworms are the larval stage of click beetles (Coleoptera: Elateridae), and some of their species are serious pests of many crops. In the present study, we evaluated the efficacy of naturally occurring and commercial entomopathogenic nematode species against the sugar beet wireworm, Limonius californicus (Mannerheim), in the laboratory. First, efficacies of Steinernema feltiae (Filipjev) (Rhabditida: Steinernematidae) collected from an irrigated (S. feltiae-SSK) and a dryland (S. feltiae-SSC) field and the two commercial entomopathogenic nematode species, S. carpocapsae (Weiser) (Rhabditida: Steinernematidae) and Heterorhabditis bacteriophora Poinar (Rhabditida: Heterorhabditidae), were examined. Efficacies of the two field-collected S. feltiae isolates were also compared against a commercial S. feltiae strain. In the first bioassay, S. feltiae-SSK caused 63.3% wireworm mortality, followed by 30% caused by S. carpocapsae, 23.3% by S. feltiae-SSC, and 6.7% by H.bacteriophora. In the second assay, S. feltiae-SSK killed 56.7% of the wireworms, ≈2.1- and ≈5.7-fold higher than S. feltiae-SSC and the commercial isolate, respectively.
钢丝虫是叩头虫（鞘翅目：叩头虫科）的幼虫阶段，其某些物种是许多作物的严重害虫。在本研究中，我们评估了天然存在和商业性的昆虫病原线虫对加利福尼亚甜菜钢丝虫（Limonius californicus （Mannerheim））的功效，在实验室中进行了评估。首先，我们检查了从灌溉地（S. feltiae-SSK）和旱地（S. feltiae-SSC）采集的自然发生的和商业性的斯氏线虫（Steinernema feltiae）（Rhabditida：Steinernematidae）、两种商业性的昆虫病原线虫，斯氏线虫（Steinernema carpocapsae）（Weiser）（Rhabditida：Steinernematidae）和异小杆线虫（Heterorhabditis bacteriophora）（Rhabditida：Heterorhabditidae）的功效。还比较了这两种田间采集的斯氏线虫分离物与商业性的斯氏线虫菌株的功效。在第一次生物测定中，S. feltiae-SSK 导致 63.3%的钢丝虫死亡，其次是 S. carpocapsae 导致 30%，S. feltiae-SSC 导致 23.3%，H.bacteriophora 导致 6.7%。在第二次测定中，S. feltiae-SSK 杀死了 56.7%的钢丝虫，比 S. feltiae-SSC 和商业分离物分别高约 2.1 倍和 5.7 倍。
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