A new biocontrol agent against old enemies: The potential of Trichogramma foersteri for the control of Spodoptera frugiperda and Spodoptera eridania

Biological Control, Journal Year: 2024, Volume and Issue: 192, P. 105504 - 105504

Published: March 16, 2024

Species of the genus Trichogramma Westwood (Hymenoptera: Trichogrammatidae) are widely used for pest control, highlighting importance exploring new species advancement biological control programs. The study aimed to evaluate efficacy foersteri Takahashi, a recently discovered species, in controlling Spodoptera frugiperda (JE Smith) and S. eridania (Stoll), two significant pests numerous cash crops. Over three days, research examined parasitism, non-reproductive mortality, emergence rates both species. demonstrated effective reducing 144.1 ± 6.0 eggs (one layer) 55.4 4.0 (two layers) frugiperda, as well 150.7 5.6 eridania. Non-reproductive effects contributed significantly causing demise 192.6 4.7 118.6 3.8 one layers 294.7 7.0 Within T. controlled approximately 334.2 7.6 174.0 layers, respectively, 445.4 7.2 highest occurred on first day evaluation, with 80.4 % 23.0 These findings underscore potential an agent provide valuable insights development sustainable strategies.

Language: Английский

---

Dual Effects of Cold Storage and Stored Host Eggs of Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) on the Reproductive Capacity of Telenomus remus Nixon (Hymenoptera: Scelionidae)

Insects, Journal Year: 2024, Volume and Issue: 15(4), P. 233 - 233

Published: March 28, 2024

Spodoptera frugiperda is the preferred host of parasitoid Telenomus remus. Cold storage can preserve a sufficient quantity parasitoids and their hosts in laboratory colony for mass release. First, effects cold on reproductive capacity T. remus reared non-stored S. eggs hatching rate unparasitized were investigated. Further, dual stored studied to determine optimal conditions maximal shelf life both parasitoid. The emergence rate, number adults produced, female proportion affected by factors. Pupae at 13 °C 15 days optimum eggs. could only be 10 five suitable rearing parasitizing 7 5 larval stage. lives cold-stored days. eggs, thereby further affecting findings suggest that different should used when mass-rearing reproduced using fresh laid maximum life.

Language: Английский

---

Pre-emptive augmentative biological control of Spodoptera frugiperda in Europe using Trichogramma spp.

CABI Agriculture and Bioscience, Journal Year: 2024, Volume and Issue: 5(1)

Published: Oct. 4, 2024

Language: Английский

---

Oviposition behavior of the parasitoid Telenomus remus (Hymenoptera: Scelionidae) on eggs of Spodoptera frugiperda (Lepidoptera: Noctuidae)

Anais da Academia Brasileira de Ciências, Journal Year: 2024, Volume and Issue: 96(4)

Published: Jan. 1, 2024

Telenomus remus (Hymenoptera: Scelionidae) is an efficient parasitoid of Spodoptera eggs. However, biological control programs require taxonomic, bioecological and behavioral studies agents. Although the performance T. in pest has been evaluated, little known about its aspects that can influence IPM tactics. The aim this study was therefore to parameters related oviposition behavior on frugiperda (Lepidoptera: Noctuidae) experiment conducted laboratory, where 17 females were transferred individually arenas containing a mass S. Oviposition recorded for 30 minutes. average walking speed 0.116 mm.s-1 total distance covered 203.3 mm. remained egg masses 16.7 min, which corresponds more than half time. number parasitized eggs 15.1 per female Females with larger antennae had lower values covered. results evaluated show standard help us better understand species.

Language: Английский

---

Biological and population parameters of Telenomus remus and Trichogramma atopovirilia as biological control agents for Spodoptera frugiperda

Crop Protection, Journal Year: 2024, Volume and Issue: unknown, P. 106995 - 106995

Published: Oct. 1, 2024

Language: Английский

---

Performance of Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae) on Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) eggs at laboratory and field conditions

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Nov. 5, 2024

Abstract The fall armyworm (FAW), Spodoptera frugiperda (Smith), is a significant pest threatening crops like maize across Africa, necessitating sustainable management alternatives. This study evaluates the efficacy of Trichogramma evanescens as biological control agent against FAW egg masses in Egypt under laboratory and semi-field conditions. larvae were initially collected from infested fields reared on castor-oil plant leaves. Meanwhile, T. was propagated using Sitotroga cerealella eggs hosts. host eggs, aged 18 to 24 h, sterilized with UV light prevent development while maintaining suitability for parasitism. Using custom-designed parasitoid incubators hemisphere clip-cages, experiments focused various mass configurations, assessing effects scales layering. Laboratory conditions controlled at 25 ± 2ºC 55 5% relative humidity, trials used large cages approximate natural results showed that settings, parasitism rates averaged 5.96%, 2.00%, 1.56% non-, average-, dense-scale masses, respectively. For varying layers, 5.24% single-layer, 3.09% double-layer, 1.18% ple-layer, regardless scale presence. In conditions, 1.01% 1.13% 0.59% triple-layer masses. Correspondingly, 1.85%, 0.60% 0.27%. concludes shows promise integrated programs; however, its effectiveness constrained by physical environmental variables. Optimizing timing releases selecting robust strains could enhance control, reducing reliance chemical pesticides Egypt.

Language: Английский

---

Correction: Variation in egg mass scale thickness of three Spodoptera species and its effects on egg parasitoid performance

Journal of Pest Science, Journal Year: 2023, Volume and Issue: 96(4), P. 1403 - 1403

Published: April 13, 2023

Language: Английский

---