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Lima BSA, Martínez LC, Rocha FAD, Plata-Rueda A, Zanuncio JC, Motta JVO, Silva LLD, Schultz H, Nere PHA, Serrão JE. Effects of the insecticide flupyradifurone on Anticarsia gemmatalis caterpillar and its predator Podisus nigrispinus. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:43927-43940. [PMID: 38913262 DOI: 10.1007/s11356-024-34010-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 06/11/2024] [Indexed: 06/25/2024]
Abstract
The caterpillar Anticarsia gemmatalis (Lepidoptera: Noctuidae) is a prevalent pest in soybean plantations, managed using both natural and synthetic chemical products. However, the emergence of resistance in some populations emphasizes the need to explore alternative insecticides. Flupyradifurone, a neurotoxic insecticide, has not been previously used for controlling A. gemmatalis. This study evaluated the potential of flupyradifurone in the management of A. gemmatalis. Initially, the toxicity and anti-feeding effects, as well as histopathological and cytotoxic impacts, of flupyradifurone on A. gemmatalis were evaluated. Subsequently, the indirect effects of flupyradifurone on the midgut and fat body of the predator Podisus nigrispinus (Hemiptera: Pentatomidae) were verified. The results indicate the susceptibility of caterpillars to flupyradifurone, with an LC50 of 5.10 g L-1. Furthermore, the insecticide adversely affects survival, induces an anti-feeding response, and inflicts damage on the midgut of the caterpillars. However, flupyradifurone also leads to side effects in the predator P. nigrispinus through indirect intoxication of the caterpillars, including midgut and fat body damage. While flupyradifurone demonstrates toxicity to A. gemmatalis, suggesting its potential for the chemical control of this pest, the indirect negative effects on the predator indicate the need for its controlled use in integrated pest management programs with the insecticide and the predator.
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Affiliation(s)
| | | | | | | | - José Cola Zanuncio
- Departamento de Entomologia/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Brazil
| | | | - Laryssa Lemos da Silva
- Departamento de Biologia Geral/BIOAGRO, Universidade Federal de Viçosa, Viçosa, 36570-900, Brazil
| | - Halina Schultz
- Departamento de Entomologia/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Brazil
| | | | - José Eduardo Serrão
- Departamento de Biologia Geral/BIOAGRO, Universidade Federal de Viçosa, Viçosa, 36570-900, Brazil.
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Pent K, Naudi S, Raimets R, Jürison M, Liiskmann E, Karise R. Overlapping exposure effects of pathogen and dimethoate on honeybee ( Apis mellifera Linnaeus) metabolic rate and longevity. Front Physiol 2023; 14:1198070. [PMID: 37346484 PMCID: PMC10279948 DOI: 10.3389/fphys.2023.1198070] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/26/2023] [Indexed: 06/23/2023] Open
Abstract
Introduction: Declines in honeybee abundance have been observed worldwide during last decades. This is partly due to plant protection agents used in intensive farming, landscaping and infrastructure maintenance. Another type of factors negatively affecting honeybees is the spread of diseases caused by different pathogens and pests. Lately, more focus has been paid to the interactions between different overlapping stressors affecting honeybee health, the combination of these often being more detrimental compared to individual stressors. The most widely used stress-evaluating methods take into account lethal- or motorial changes of the individuals or colonies. Comparatively little honeybee research has examined changes in initial recovery potential and physiological symptoms of toxification. The aim of this study was to examine the combined effect of Nosema apis and N. ceranae (according to a newer classification Vairimorpha apis and V. ceranae), the common causes of nosemosis in the honeybee Apis mellifera L., with the insecticide dimethoate. Methods: In this study, honeybee mortality and metabolic rate were used to assess the combined effects interactions of Nosema ssp. and dimethoate. Results: Our results showed that exposure to the low concentration of either dimethoate, either one or both species of Nosema ssp as single factors or in the combination had no significant effect on honeybee metabolic rate. The mortality increased with the two Nosema spp., as well as with infection by N. ceranae alone. The effect of dimethoate was observed only in combination with N. apis infection, which alone had no effect on individual honeybee mortality. Conclusion: This study demonstrates that the overlapping exposure to a non-lethal concentration of a pesticide and a pathogen can be hidden by stronger stressor but become observable with milder stressors.
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Yin F, Hu L, Li Z, Yang X, Kendra PE, Hu Q. Effects of destruxin A on hemocytes of the domestic silkworm, Bombyx mori. Front Microbiol 2023; 14:1210647. [PMID: 37333627 PMCID: PMC10272401 DOI: 10.3389/fmicb.2023.1210647] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 05/15/2023] [Indexed: 06/20/2023] Open
Abstract
Introduction Destruxin A (DA) is a mycotoxin isolated from the entomopathogenic fungus Metarhizium anisopliae which has demonstrated inhibitory activity against various insect species. However, the mechanism of inhibition on target sites in insects remains unknown. Methods In this research, the dose-response relationship between DA and morphological changes in body tissues and organs of domestic silkworm, Bombyx mori, were investigated by histopathological methods to identify the target sites that responded to DA. Results and Discussion The results showed that responses of individual tissues and organs varied with DA dosage and treatment time. At low doses (i.e., 0.01μg/g), the hemocytes were the most sensitive to DA with morphological changes apparent at 6 h after treatment. However, the muscle cells, fat body, and Malpighian tubules were unaltered. At higher doses (i.e., > 0.1μg/g), morphological changes were observed in muscle cells, fat body, and Malpighian tubules at 24 h after treatment. The results indicated that DA can be an immunosuppressant by damaging host cells like hemocytes, and at higher doses may potentially impact other physiological processes, including muscle function, metabolism, and excretion. The information presented in the current study will facilitate development of mycopesticides and novel immunosuppressants.
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Affiliation(s)
- Fei Yin
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- College of Plant Protection, South China Agricultural University, Guangzhou, China
| | - Lina Hu
- College of Plant Protection, South China Agricultural University, Guangzhou, China
| | - Zhenyu Li
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Xiangbing Yang
- Subtropical Horticulture Research Station, USDA-Agricultural Research Service, Miami, FL, United States
| | - Paul E Kendra
- Subtropical Horticulture Research Station, USDA-Agricultural Research Service, Miami, FL, United States
| | - Qiongbo Hu
- College of Plant Protection, South China Agricultural University, Guangzhou, China
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Batista CH, Plata-Rueda A, Zanuncio JC, Serrão JE, Martínez LC. Indoxacarb effects on non-target predator, Podisus distinctus (Hemiptera: Pentatomidae). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:29967-29975. [PMID: 34997483 DOI: 10.1007/s11356-021-17988-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 12/02/2021] [Indexed: 06/14/2023]
Abstract
Forestry pest management includes biological and chemical methods of pest control. Using insecticides and natural enemies can be compatible in forest pest management programs. The compatibility of the predatory stink bug Podisus distinctus with the insecticide indoxacarb, used in forestry, needs to be evaluated in Brazil. This study investigated the mortality, survival, respiration, preference, prey consumption, and locomotor activity of P. distinctus adults exposed to indoxacarb. In concentration-mortality bioassays, the lethality of indoxacarb (LC50 = 2.62 g L-1 and LC90 = 6.11 g L-1) was confirmed in P. distinctus adults. The survival rate was 100% in predator insects not exposed to indoxacarb, declining to 40.7% in predator insects exposed to 2.62 g L-1 and 0.1% in predators treated with 6.11 g L-1. Indoxacarb reduced the respiration of P. distinctus from 18.45 to 14.41 µL CO2 h-1 at 2.62 g L-1 for up to 3 h after insecticide exposure, inhibiting food consumption and displaying hyperexcitation. The harmful effects of indoxacarb to the natural enemy suggest that it should be better assessed for use with P. distinctus for pest management in forestry.
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Affiliation(s)
- Carlos Henrique Batista
- Department of Crop Science, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Angelica Plata-Rueda
- Department of Entomology, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - José Cola Zanuncio
- Department of Entomology, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - José Eduardo Serrão
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Luis Carlos Martínez
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil.
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Non-proteinaceous salivary compounds of a predatory bug cause histopathological and cytotoxic effects in prey. Toxicon 2022; 213:76-82. [DOI: 10.1016/j.toxicon.2022.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/18/2022] [Accepted: 04/19/2022] [Indexed: 11/18/2022]
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Plata-Rueda A, Zanuncio JC, Serrão JE, Martínez LC. Origanum vulgare Essential Oil against Tenebrio molitor (Coleoptera: Tenebrionidae): Composition, Insecticidal Activity, and Behavioral Response. PLANTS (BASEL, SWITZERLAND) 2021; 10:2513. [PMID: 34834876 PMCID: PMC8622527 DOI: 10.3390/plants10112513] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/13/2021] [Accepted: 11/16/2021] [Indexed: 05/15/2023]
Abstract
Tenebrio molitor is one of the main stored product pests. This study characterized oregano essential oil (OEO) by gas chromatography (GC/FID and GC/MS) and assessed its insecticidal properties against T. molitor. Mortality, survival, respiration, and behavioral response in larva, pupa, and adult of this insect were determined. The major components of OEO were carvacrol (25.6%), p-cymene (12.3%), linalool (8.71%), thymol (7.22%), γ-terpinene (7.21%), caryophyllene oxide (4.67%), α-pinene (2.71%), and eucalyptol (2.69%). OEO caused high contact toxicity in larvae (LD50 = 3.03 µg insect-1), pupae (LD50 = 5.01 µg insect-1), and adults (LD50 = 5.12 µg insect-1) of T. molitor. Survival rates were 100% in larvae, pupae, and adults of T. molitor not treated with OEO, declining to 65-54%, 38-44%, 30-23%, and 6-2% in insects treated with LD25, LD50, LD75, and LD90, respectively. Low respiration rates of T. molitor at different developmental stages was observed after OEO exposure. Additionally, OEO exposure affects behavioral avoidance response and causes repellency in larvae and adults. These findings show that OEO exerts insecticidal and repellent effects against T. molitor, suggesting a potent alternative to synthetic insecticides for controlling the beetle.
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Affiliation(s)
- Angelica Plata-Rueda
- Department of Entomology, Federal University of Viçosa, Viçosa 36570-000, Brazil; (A.P.-R.); (J.C.Z.)
| | - José Cola Zanuncio
- Department of Entomology, Federal University of Viçosa, Viçosa 36570-000, Brazil; (A.P.-R.); (J.C.Z.)
| | - José Eduardo Serrão
- Department of General Biology, Federal University of Viçosa, Viçosa 36570-000, Brazil;
| | - Luis Carlos Martínez
- Department of General Biology, Federal University of Viçosa, Viçosa 36570-000, Brazil;
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