Effectiveness of some insecticides against soybean stink bugs and side-effects on Telenomus podisi (Ashmead) and generalist predators

The objective of this on-farm study was to determine if peanuts harbor populations of stink bugs (Heteroptera: Pentatomidae) and their natural enemies in Georgia. Eight species of phytophagous stink bugs were found in peanuts over the 5-yr study. The predominant stink bug species were Nezara viridula (L.), Euschistus servus (Say), Euschistus quadrator (Rolston), and Oebalus pugnax pugnax (F.). The remaining 4 species, Acrosternum hilare (Say), Euschistus tristigmus (Say), Euschistus ictericus (L.), and Thyanta custator accerra McAtee, were found in relatively low numbers. All developmental stages of N. viridula, E. servus, E. quadrator, A. hilare, and O. p. pugnax were collected at various times in the study indicating that these 5 species of stink bugs were developing on this crop. Seasonal abundance of N. viridula and E. servus nymphs and adults provided further support that these 2 species of stink bugs developed on peanuts. At least 1 generation of N. viridula and E. servus occurred in peanuts each year, and generally some of the adults that developed on peanuts oviposited on peanuts producing another generation of nymphs in this crop. Because only adults of T. c. accerra, E. tristigmus, and E. ictericus were found in peanuts, these 3 stink bug species probably were not developing on this crop. Adult stink bugs were parasitized by the tachinid parasitoids Trichopoda pennipes (F.) and Cylindromyia spp. Stink bug eggs were parasitized by the scelionids, Trissolcus basalis (Wollaston), Trissolcus thyantae Ashmead, Trissolcus brochymenae (Ashmead), Telenomus podisi Ashmead, and Gryon obesum Masner, and an unknown encyrtid species. Geocoris punctipes (Say), Geocoris uliginosus (Say), Orius insidiosus (Say), Podisus maculiventris (Say), and Oxyopes salticus Hentz preyed on stink bugs in peanuts. Peanuts harbor populations of stink bugs and their natural enemies, and thus the role peanuts play in landscape ecology of stink bugs needs to be ascertained to better understand how to manage stink bug populations in landscapes in which peanuts are associated with other crops.

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Using Microscopy to Assess Chorion Structural Integrity and Parasitoid Oviposition Sites on Stink Bug (Hemiptera: Pentatomidae) Eggs

Microscopy and Microanalysis ◽

10.1017/s1431927610093906 ◽

2010 ◽

Vol 17 (1) ◽

pp. 114-117 ◽

Cited By ~ 4

Author(s):

A.L. Koppel ◽

D.A. Herbert ◽

E.W. Westbrook

Keyword(s):

Structural Integrity ◽

Stink Bug ◽

Podisus Maculiventris ◽

Stink Bugs ◽

Acrosternum Hilare ◽

Euschistus Servus ◽

Murgantia Histrionica ◽

Telenomus Podisi ◽

Microscopy Images ◽

Oviposition Sites

AbstractPrevious efficacy studies found that many insecticides used by growers could be having an adverse effect on egg parasitoids (Telenomus podisi) developing in the eggs of the brown stink bug (Euschistus servus), while unhatched stink bugs experienced lower levels of mortality. One plausible explanation for this was that insecticides might enter parasitized eggs more readily via oviposition wounds. Parasitized E. servus eggs, as well as nonparasitized stink bug (Acrosternum hilare, E. servus, Murgantia histrionica, and Podisus maculiventris) eggs, were examined using electron microscopy. Egg response to perforation by a tungsten probe served as a control. Microscopy images depicted the chorion surface as characterized by a matrix of ridges and micropylar processes in a ring around the margin of the operculum. Observations of oviposition sites showed a “scab” formed where the ovipositor penetrated the chorion, and at sites penetrated by the probe. These formations appeared to be the result of fluids from inside the egg leaking out, drying, and hardening after oviposition or probe perforation, suggesting that the response was not due to substances secreted by the parasitoid. Further, no open wounds or holes were seen to increase the possibility of insecticides entering parasitized eggs.

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Eavesdropping on sexual vibratory signals of stink bugs (Hemiptera: Pentatomidae) by the egg parasitoid Telenomus podisi

Animal Behaviour ◽

10.1016/j.anbehav.2006.09.011 ◽

2007 ◽

Vol 73 (4) ◽

pp. 637-649 ◽

Cited By ~ 49

Author(s):

Raúl A. Laumann ◽

Maria Carolina Blassioli Moraes ◽

Andrej Čokl ◽

Miguel Borges

Keyword(s):

Egg Parasitoid ◽

Stink Bugs ◽

Telenomus Podisi ◽

Vibratory Signals

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New Records of Egg Parasitoids of Stink Bugs (Hemiptera: Pentatomidae) on Rice in Piauí, Brazil: Rate Parasitism, Incidence and Seasonality

Entomological Communications ◽

10.37486/2675-1305.ec03020 ◽

2021 ◽

Vol 3 ◽

pp. ec03020

Author(s):

Nadja N. P. Silva ◽

Kátia K. A. Sousa ◽

Paulo Henrique S. Silva ◽

Ranyse B. Querino

Keyword(s):

Rainy Season ◽

New Records ◽

Egg Parasitoids ◽

Stink Bugs ◽

Parasitoid Species ◽

Naturally Occurring ◽

Euschistus Heros ◽

Dry Seasons ◽

Telenomus Podisi

This study was conducted to investigate parasitism of naturally occurring pentatomid eggs in rice crops in a Cerrado-Caatinga ecosystem during the rainy and dry seasons in Teresina, Piauí, Brazil. Also, it provides information on the incidence and seasonality of parasitoid species. Parasitism was registered only during the rainy season, where Telenomus podisi (Ashmead, 1893) parasitized Oebalus poecilus (Dallas, 1851), Tibraca limbativentris (Stal, 1860) and Euschistus heros (Fabricius, 1798) eggs. Additionally, Trissolcus urichi (Crawford, 1913) was collected from O. poecilus and T. limbativentris eggs. Ooencyrtus anasae (Ashmead, 1887) was found in O. poecilus eggs. Such findings provide information that can be used to supplement the management of pentatomid pests in the rice agroecosystems, in Piauí, Brazil.

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Effects of Insecticides Used in Organic Agriculture on Anastatus reduvii (Hymenoptera: Eupelmidae) and Telenomus podisi (Hymenoptera: Scelionidae), Egg Parasitoids of Pestivorous Stink Bugs

Journal of Economic Entomology ◽

10.1093/jee/toy340 ◽

2018 ◽

Vol 112 (1) ◽

pp. 108-114 ◽

Cited By ~ 5

Author(s):

Emily C Ogburn ◽

James F Walgenbach

Keyword(s):

Organic Agriculture ◽

Egg Parasitoids ◽

Stink Bugs ◽

Anastatus Reduvii ◽

Telenomus Podisi

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Side Effects of Organic Products on Telenomus podisi (Hymenoptera: Platygastridae)

Journal of Economic Entomology ◽

10.1093/jee/toaa119 ◽

2020 ◽

Vol 113 (4) ◽

pp. 1694-1701

Author(s):

Lucas Battisti ◽

Jheniffer V Warmling ◽

Claudinei F Vieira ◽

Darlin H R Oliveira ◽

Yuri R A Lima ◽

...

Keyword(s):

Natural Products ◽

Side Effects ◽

Production Systems ◽

Control Strategies ◽

Sublethal Effect ◽

Organic Production ◽

Choice Test ◽

Adult Longevity ◽

Offspring Sex Ratio ◽

Telenomus Podisi

Abstract Telenomus podisi Ashmead, 1893 is an important biocontrol agent, both in conventional and organic production systems. It can be used in association with other control strategies, such as natural botanical products and biological insecticides. Studies of selectivity and side effects are fundamental for proper management of insect control strategies because the interaction between different control strategies may negatively affect T. podisi. In this context, the present study evaluated the side effects of commercial natural products on T. podisi under laboratory conditions. Five natural products (insecticide, fungicide, and leaf fertilizer) allowed in organic farming were evaluated at concentrations recommended by the manufacturer in three bioassays. First bioassay (free-choice test), the preference of T. podisi parasitism between treated and non-treated E. heros eggs was assessed. In the second and third bioassay (no-choice tests) the treatments were applied to E. heros eggs, repectively before and after T. podisi parasitism (pre- and post-parasitism) and parasitism, emergence, offspring sex ratio, developmental time, and adult longevity were assessed. The products formulated with Metarhizium anisopliae (Metsch.) Sorok. (Hypocreales), Beauveria bassiana (Bals.) Vuill. (Hypocreales), orange oil fertilizer, and the fungicide copper oxychloride did not have side effects on T. podisi because they did not affect most of the evaluated characteristics. In contrast, azadirachtin A/B had a sublethal effect due to the reduced parasitism in all tests performed and, although it did not affect other aspects, this could compromise the performance of the parasitoid.

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Response of the Egg Parasitoids Trissolcus basalis and Telenomus podisi to Compounds from Defensive Secretions of Stink Bugs

Journal of Chemical Ecology ◽

10.1007/s10886-008-9578-0 ◽

2009 ◽

Vol 35 (1) ◽

pp. 8-19 ◽

Cited By ~ 40

Author(s):

Raúl A. Laumann ◽

Michely F. S. Aquino ◽

Maria C. B. Moraes ◽

Martín Pareja ◽

Miguel Borges

Keyword(s):

Egg Parasitoids ◽

Stink Bugs ◽

Defensive Secretions ◽

Trissolcus Basalis ◽

Telenomus Podisi

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RAPD analysis revealing polymorphism in egg parasitoids of soybean stink bugs (Hemiptera: Pentatomidae)

Anais da Sociedade Entomológica do Brasil ◽

10.1590/s0301-80591998000300009 ◽

1998 ◽

Vol 27 (3) ◽

pp. 413-420 ◽

Cited By ~ 2

Author(s):

Salah M. Aljanabi ◽

Marta S. Loiácono ◽

Rodrigo T. Lourenço ◽

Miguel Borges ◽

Myrian S. Tigano

Keyword(s):

Rapd Markers ◽

Egg Parasitoids ◽

Correct Identification ◽

Stink Bugs ◽

Soybean Field ◽

Random Amplification ◽

Identification Of Species ◽

Glycine Max L ◽

Polymerase Chain ◽

Telenomus Podisi

The solitary egg parasitoids (Hymenoptera: Scelionidae) of Pentatomidae species complex are potential candidates for soybean (Glycine max L.) integrated pest management programs in Brazil. The correct identification of species and strains of these parasitoids is necessary to implement the use of biological control. Polymerase chain reaction (PCR) was used to generate random amplification of polymorphic DNA (RAPD) from male individuals of Telenomus podisi Ashmead and Trissolcus spp. collected in a soybean field in Brasília, Brazil in 1996. The analysis of 18 primers used to screen Trissolcus spp. individuals revealed different patterns related to the species analyzed. These results indicate the potential of RAPD markers to differentiate T. teretis Johnson, T. urichi Crawford and T. basalis (Wollaston). The 13 selected primers used to analyze T. podisi individuals produced 103 clear polymorphic scorable markers. Different genotypes were observed within this population analyzed, although the cluster analysis applied to the RAPD data showed high homogeneity (similarity >78.2%) among individuals.

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