Effect of Sitotroga cerealella egg diets (Olivier, 1789) of different cold storage ages on the reproduction of Orius insidiosus (Say, 1832)

Authors

  • L. F. Moreno Mayorga National Autonomous University of Nicaragua, Leon. Nicaragua https://orcid.org/0000-0002-5431-5230
  • S. M. Palacios-Muñoz Specific Directorate of Agroecology and Agribusiness, Area of ​​Knowledge of Agricultural Sciences and Veterinary Medicine, National Autonomous University of Nicaragua, León, Nicaragua https://orcid.org/0009-0007-5226-391X
  • Bryan Aryel Romero González Specific Directorate of Agroecology and Agribusiness, Area of ​​Knowledge of Agricultural Sciences and Veterinary Medicine, National Autonomous University of Nicaragua, León, Nicaragua https://orcid.org/0009-0007-3525-1634
  • E.D. Silva-López Specific Directorate of Agroecology and Agribusiness, Area of ​​Knowledge of Agricultural Sciences and Veterinary Medicine, National Autonomous University of Nicaragua, León, Nicaragua https://orcid.org/0009-0004-0265-6553
  • P. F. Silva-Illescas Specific Directorate of Agroecology and Agribusiness, Area of ​​Knowledge of Agricultural Sciences and Veterinary Medicine, National Autonomous University of Nicaragua, León, Nicaragua https://orcid.org/0000-0002-4531-4121
  • C. I. Real-Baca Center for Agricultural and Veterinary Sciences Research, National Autonomous University of Nicaragua, León, Nicaragua https://orcid.org/0000-0002-7831-4064
  • C. R. Quiroz Medina Centro de Investigación de Ciencias Agrarias y Veterinaria, Universidad Nacional Autónoma de Nicaragua, León. Nicaragua https://orcid.org/0000-0003-4723-6144

DOI:

https://doi.org/10.5377/ul.v17i1.22064

Keywords:

Gelechiidae, Anthocoridae, Pirate girdle, Entomophagous

Abstract

Pest management in agriculture is essential to ensure productivity, quality, and consumer health. Orius insidiosus is a valuable natural predator capable of regulating pest insect populations. This study evaluated the effect of cold-stored Sitotroga cerealella eggs of different ages on the reproduction of Orius insidiosus under controlled conditions. Six treatments were established: eggs of 24 hours, 4, 8, 12, and 16 days stored at 11°C, and L1 larvae of S. cerealella. Variables analyzed included oviposition rate, hatching, consumption, and adult longevity. The treatment with eggs stored for 16 days at 11°C produced the highest cumulative and daily egg laying. Treatments with eggs stored for 4 and 12 days at low temperatures showed higher hatching rates, while treatments with eggs stored for 1 and 4 days showed the highest consumption levels, with 24.8% and 21%, respectively. Females lived longer compared to males. This study not only demonstrates the effectiveness of O. insidiosus as a biological control agent but also contributes to the promotion of sustainable agricultural practices.

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Author Biographies

L. F. Moreno Mayorga, National Autonomous University of Nicaragua, Leon. Nicaragua

Entomophagous Coordinator, Biological Controllers Research and Reproduction Unit Research Professor, Agroecology and Agribusiness Directorate ACCAV/UNANLEON

S. M. Palacios-Muñoz, Specific Directorate of Agroecology and Agribusiness, Area of ​​Knowledge of Agricultural Sciences and Veterinary Medicine, National Autonomous University of Nicaragua, León, Nicaragua

Researcher

Bryan Aryel Romero González, Specific Directorate of Agroecology and Agribusiness, Area of ​​Knowledge of Agricultural Sciences and Veterinary Medicine, National Autonomous University of Nicaragua, León, Nicaragua

Researcher

E.D. Silva-López, Specific Directorate of Agroecology and Agribusiness, Area of ​​Knowledge of Agricultural Sciences and Veterinary Medicine, National Autonomous University of Nicaragua, León, Nicaragua

Researcher

P. F. Silva-Illescas, Specific Directorate of Agroecology and Agribusiness, Area of ​​Knowledge of Agricultural Sciences and Veterinary Medicine, National Autonomous University of Nicaragua, León, Nicaragua

Researcher

C. I. Real-Baca, Center for Agricultural and Veterinary Sciences Research, National Autonomous University of Nicaragua, León, Nicaragua

Professor Researcher

C. R. Quiroz Medina, Centro de Investigación de Ciencias Agrarias y Veterinaria, Universidad Nacional Autónoma de Nicaragua, León. Nicaragua

Professor Researcher

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Published

2026-02-25

How to Cite

Moreno Mayorga, L. F., Palacios Muñoz, S. M., Romero González, B. A., Silva López, E. D., Silva Illescas, P. F., Real Baca, C. I., & Conrado Ronaldo. (2026). Effect of Sitotroga cerealella egg diets (Olivier, 1789) of different cold storage ages on the reproduction of Orius insidiosus (Say, 1832). Universitas (León) , 17(1), pp. 10–19. https://doi.org/10.5377/ul.v17i1.22064

Issue

Vol. 17 No. 1 (2025)

Section

Original Scientific Papers

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