Agrochemical and weed influences on Neoseiulus californicus predation in soybean.

The olfactory system is one of the primary decision-making mechanisms in arthropod foraging. Plants emit volatile compounds when attacked by herbivores, which can directly influence predator foraging. Given the diversity of agrochemicals used in soybean cultivation, it is necessary to investigate their possible effects indirect on natural enemies. In this study, the olfactory responses of the predatory mite Neoseiulus californicus were evaluated in soybean plants infested by Tetranychus urticae in the presence of the fungicides Strobilurin and Triazole, the herbicide Glyphosate, and the invasive plant "hairy fleabane" (Conyza bonariensis). The assays were conducted in the laboratory using a Y-tube olfactometer, where the following treatments were evaluated: clean soybean × soybean + T. urticae; soybean + T. urticae × soybean + T. urticae + "hairy fleabane"; soybean + T. urticae × soybean + T. urticae + herbicide; soybean + T. urticae × soybean + T. urticae + fungicide. N. californicus prefers soybean plants infested with T. urticae. In treatments with the application of the fungicides, the herbicide, and the presence of the weed, N. californicus equally preferred plants infested with T. urticae. It is concluded that the foraging behavior of N. californicus is not influenced by the presence of the fungicides (Strobilurin and Triazole), the herbicide (Glyphosate), or "hairy fleabane" (Conyza bonariensis). Our results demonstrate that N. californicus is capable of locating T. urticae-infested plants in the presence of odors commonly found in conventional agricultural systems in soybean crops.

• Publication year

  2025

• Venue

  Brazilian journal of biology = Revista brasleira de biologia

• Publication date

  Unknown publication date

• Fields of study

  Agricultural and Food Sciences, Medicine

• Identifiers
  DOI 10.1590/1519-6984.294337PMID 41221932
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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