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- Title
Attack efficacy by Brontocoris tabidus and Podisus nigrispinus (Hemiptera: Pentatomidae) on Thyrinteina arnobia (Lepidoptera: Geometridae) with different pre-release food-free intervals.
- Authors
Pires, Evaldo Martins; Nogueira, Roberta Martins; Beber, Roberto Carlos; Júnior, Wilson Faustino; Soares, Marcus Alvarenga; Serrão, José Eduardo; Zanuncio, José Cola
- Abstract
Predatory stink bugs are important biological control agents in agricultural and forest crops. The use of these natural enemies by companies, growers, and research centers has been an important tactic in controlling larvae pest outbreaks. Brontocoris tabidus (Signoret) and Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae) were kept for 24, 36, or 48 hours without food, and the time taken by these predators for the first attack and to kill a sixth-instar Thyrinteina arnobia (Stoll) (Lepidoptera: Geometridae) larvae and the number of attacks during four-hour period evaluated. In addition, the size of the mouthparts (mandibular stylets and maxillary bristles), important in prey control, and the enzymatic activity of amylase, lipase, and protease in the salivary glands content of these predators were also evaluated. The efficacy of B. tabidus in killing T. arnobia larvae was higher than that of P. nigrispinus with a death of about 72% of them in the first attack, compared to 30% for P. nigrispinus. The higher success of B. tabidus is probably due to its larger mouthparts and amylase activity stimulating phytophagy. The first attack was faster for P. nigrispinus with 36 and 48 hours without food. The attack by B. tabidus was faster when this predator stayed for 48 hours without food than for 24 and 36 hours. Biofactories could keep these insects for up to 48 hours without food before releasing them in the field to improve their impact on biological control.
- Subjects
LEPIDOPTERA; STINKBUGS; HEMIPTERA; GEOMETRIDAE; BIOLOGICAL pest control agents; DIGESTIVE enzymes; AMYLASES
- Publication
Phytoparasitica, 2023, Vol 51, Issue 5, p967
- ISSN
0334-2123
- Publication type
Article
- DOI
10.1007/s12600-023-01104-8