Chinese oak silkworm (Antheraea pernyi) and mulberry silkworm (Bombyx mori) are economically important insects used for silk production and food resource. Entomopathogenic nematodes (EPNs) from the families of Steinernematidae and Heterorhabditidae are beneficial organisms currently considered in biological control. In this paper, we evaluated survival of two silkworm species exposed to four Steinernema species which are widely applied in pest control. The results showed that among four Steinernema species, S. bicornutum and S. feltiae did not have an effect on the larval survival to the two silkworm species, whereas S. carpocapsae and S. glaseri did have an effect. Each Steinernema species poses no threat to hatchability of eggs, pupation rate, larval durations and cocoon shell ratio.

中文翻译：

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四种昆虫病原线虫对两种家蚕的安全性评价

柞蚕（Antheraea pernyi）和桑蚕（Bombyx mori）是重要的经济昆虫，用于丝绸生产和食物资源。来自 Steinernematidae 和 Heterorhabditidae 科的昆虫病原线虫 (EPNs) 是目前被认为用于生物控制的有益生物。在本文中，我们评估了两种蚕种暴露于四种广泛应用于害虫防治的 Steinernema 物种的存活率。结果表明，在四种Steinernema 种中，S. bicornutum 和S. Feeliae 对两种家蚕的幼虫存活率没有影响，而S. carpocapsae 和S. glaseri 确实有影响。每种 Steinernema 物种对卵的孵化率、化蛹率、幼虫持续时间和茧壳比率均不构成威胁。