Effects of Conventional Pesticides on the Preimaginal Developmental Stages and on Adults of Trichogramma cordubensis (Hymenoptera: Trichogrammatidae)

Vieira, Antônio Rodrigues; Oliveira, Luísa; Garcia, Patrícia

doi:10.1080/09583150120067553

Cited by 34 publications

(36 citation statements)

References 7 publications

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“…Conversely, Symington (2003) observed that the pupation and adult emergence of the larval endoparasitoid, Orgilus lepidus (Hymenoptera: Braconidae), was hastened (approximately 24h and 48h, respectively) when parasitoids were developing in permethrin-treated host larvae. Vieira et al (2001) did not observe changes in the developmental rate of Trichogramma cordubensis (Hymenoptera: Trichogrammatidae) treated with pyrethroids (deltamethrin and lambda-cyhalothrin) at different preimaginal stages; in this case, the chorion of the host egg most probably provided a protection for the immature stages of the parasitoids, and thus the wasp's preimaginal development was not affected by both pyrethroids.…”

Section: Developmentmentioning

confidence: 90%

Sublethal Effects of Pyrethroids on Insect Parasitoids: What We Need to Further Know

Garcia¹

2011

Pesticides - Formulations, Effects, Fate

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Section: Developmentmentioning

confidence: 90%

Sublethal Effects of Pyrethroids on Insect Parasitoids: What We Need to Further Know

Garcia¹

2011

Pesticides - Formulations, Effects, Fate

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“…This methodology is efficient for toxicological tests for pupae received herbicide all over its surface and avoids death of pupae by asphyxiation (Vieira et al, 2001). After this, pupae were put in contact with P. elaeisis female for 2 d in the glass tube.…”

Section: Herbicides Treatmentmentioning

confidence: 99%

Palmistichus elaeisis (Hymenoptera: Eulophidae) as an indicator of toxicity of herbicides registered for corn in Brazil

Menezes

Soares

Fonseca

et al. 2014

Chilean J. Agric. Res.

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The diversity of plants in agricultural systems benefits natural enemies. Herbicides are used in weed management in corn (Zea mays L.) to reduce competition and productivity losses, but they can impact natural enemies and contaminate the environment. The objective was to evaluate toxicity of herbicides on pupae parasitoid Palmistichus elaeisis Delvare and LaSalle, 1993 (Hymenoptera: Eulophidae). The treatments were represented by the host pupae Tenebrio molitor L., 1785 (Coleoptera: Tenebrionidae) and herbicides atrazine, nicosulfuron, paraquat, and tembotrione in commercial doses compared to a control treatment with water. Pupae of T. molitor were immersed in the solution of herbicides and exposed to parasitism by six females of P. elaeisis each. The herbicides atrazine and paraquat were highly toxic and, therefore, not selective to P. elaeisis. Nicosulfuron reduced the sex ratio of P. elaeisis (0.20 ± 0.03), which may affect subsequent generations. Moreover, the herbicide tembotrione was selective to P. elaeisis, showing results comparable to the control. Floristic diversity of weeds can increase food source, habitat, shelter, breeding places and microclimates for insect parasitoids but herbicides formulations can be toxic and these products can affect P. elaeisis or its hosts by direct or indirect contact, showing the importance of selectivity studies for this natural enemy. However, the herbicide tembotrione was selective to P. elaeisis and it can be recommended for programs of sustainable management of weeds in corn crop with this parasitoid.

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“…Their effectiveness can be significantly lowered by insecticide applications that interfere with parasitism and parasite population growth. Negative effects of insecticides on populations of the parasitoid Trichogramma have been reported [7,8] whereas some studies show that insecticides may increase the performance of natural enemies [9]. Another studies showed that the sublethal effects of insecticides can severely reduce the performance of biological control agents [10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Some Insecticides on the Egg Parasitoid, Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae)

Abdulhay

Rathi

2017

JNUS

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In this study, the effects of three insecticides including: Fenvalerate, Thiacloprid and Fenoxycarb on egg parasitoid, Trichogramma evanescens were investigated. The toxicity of insecticide were tested using two laboratory tests: (a) direct spray on Ephestia cautella eggs containing the parasitoid for effects on parasitism and emergence of the adult parasitoids (b) adult parasitoid exposure to dry insecticide films residue in glass vials. All insecticides were prepared according to the manufacturer's recommendations for field application. Results showed that these insecticides varied in toxicity and have different degrees of effect regarding the emergence and parasitism of the parasitoid. Fenoxycarb was non-toxic or low toxic to T. evanescen and did not affect immature stages development and adult emergence. Whereas, Fenvalerate was highly noxious to the parasitoid and significantly reduced the percentage of emergence and parasitism of T. evanescens developing in host eggs. The effects of Thiacloprid were slightly toxic to T. evanescens as it fell into the class 2 when parasitoids were directly exposed to chemical residues. While, Fenvalerate classified as moderately toxic and caused higher mortality than Fenoxycarb and Thiacloprid in both glass surface residues and direct spray of host eggs. Therefore, obtained data provided useful data for implementing both chemical and biological control strategies in integrated pest management.

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Effects of Conventional Pesticides on the Preimaginal Developmental Stages and on Adults of Trichogramma cordubensis (Hymenoptera: Trichogrammatidae)

Abstract: The eVects of seven pesticides sprayed on hosts with parasitoid s at diVerent phases of egg to adult development (24, 24 ± 48, 48± 72, 72 ± 96, 120± 144, 192± 216 h)

Cited by 34 publications

References 7 publications

Sublethal Effects of Pyrethroids on Insect Parasitoids: What We Need to Further Know

Sublethal Effects of Pyrethroids on Insect Parasitoids: What We Need to Further Know

Palmistichus elaeisis (Hymenoptera: Eulophidae) as an indicator of toxicity of herbicides registered for corn in Brazil

Effect of Some Insecticides on the Egg Parasitoid, Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae)

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