scholarly journals Population Genomics of the Neotropical Brown Stink Bug, Euschistus heros: The Most Important Emerging Insect Pest to Soybean in Brazil

2019 ◽  
Vol 10 ◽  
Author(s):  
Maria I. Zucchi ◽  
Erick M. G. Cordeiro ◽  
Xing Wu ◽  
Letícia Marise Lamana ◽  
Patrick J. Brown ◽  
...  
Keyword(s):  
Population Genomics ◽  
Insect Pest ◽  
Stink Bug ◽  
Euschistus Heros

scholarly journals Spatial distribution of nymphs and adults of Euschistus heros (Fabricius, 1794) (Heteroptera: Pentatomidae) in transgenic soybean cultivars of different maturing cycles

2018 ◽  
Vol 39 (3) ◽  
pp. 905
Author(s):  
Leandro Aparecido de Souza ◽  
José Carlos Barbosa ◽  
Oniel Jeremías Aguirre-Gil ◽  
Daniela De Lima Viana ◽  
Leticia Serpa dos Santos ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Negative Binomial Distribution ◽  
Binomial Distribution ◽  
Negative Binomial ◽  
Insect Pest ◽  
Stink Bug ◽  
Transgenic Soybean ◽  
Distribution Models ◽  
Soybean Cultivars ◽  
Euschistus Heros

The neotropical stink bug Euschistus heros is the predominant and most important insect pest affecting soybean cultivation. Knowledge of the spatial pattern of the pest in an area is critical to understanding its behavior. The objective of this work was to study the spatial distribution of E. heros in transgenic soybean cultivars of different maturing cycles. The experiments were conducted in the seasons 2013/14 and 2014/15 in FCAV/UNESP, Jaboticabal, SP. Three fields were selected, and each was marked an area of 8.000 m2 (0.8 ha), with each area divided into 80 portions of 100 m2 (10 m x 10 m). The transgenic soybean cultivars of different maturing cycles were: SYN 1365 RR (early), M 7908 RR (average), and BRS Valiosa RR (late). Samples were taken weekly using a beat sheet, registering the number of nymphs and adults of E. heros. To study the dispersion of E. heros, the following indices were used: variance/mean ratio, Morisita index, Green coefficient, and the exponent k of the negative binomial distribution. For studies of special distribution models of E. heros, adjustments of Poisson distribution and negative binomial distribution were tested. The spatial distribution of nymphs and adults was aggregated for all the cultivars studied, indicating that cultivars did not alter the distribution behavior of E. heros.

scholarly journals Natural parasitism of Hexacladia smithii Ashmead (Hymenoptera: Encyrtidae) on Euschistus heros (F.) (Hemiptera: Pentatomidae): new record from Mato Grosso State, Brazil

2016 ◽  
Vol 82 (0) ◽  
Author(s):  
Leonardo Morais Turchen ◽  
Vanessa Golin ◽  
Bruna Magda Favetti ◽  
Alessandra Regina Butnariu ◽  
Valmir Antônio Costa
Keyword(s):  
Biological Control ◽  
New Record ◽  
Insect Pest ◽  
First Record ◽  
Insect Control ◽  
Conventional System ◽  
Mato Grosso ◽  
Random Samples ◽  
Euschistus Heros ◽  
Natural Parasitism

The neotropical stink brown bug, Euschistus heros (F.) (Hemiptera: Pentatomidae), is an insect pest to soybean crops in Mato Grosso State, Brazil. In this region, synthetic insecticides are frequently used for insect control. An alternative to the indiscriminate use of insecticides is the biological control with parasitoids. Thus, the objective of this study was to conduct the survey of parasitoids that use E. heros adults as hosts. Random samples were conducted during the harvests of 2009/10 and 2010/11 in two farms that produce soybean (conventional system) in Tangará da Serra, Mato Grosso State, Brazil. The total number of collected E. heros was: 297 (Field 1) and 293 (Field 2) in 2009/10 and 295 (Field 1) and 376 (Field 2) in 2010/11. Of these, 1.50 (Field 1) and 13.99% (Field 2) were parasitized in 2009/10 and 8.47 (Field 1) and 7.45% (Field 2) in 2010/11. The parasitoids found were Hexacladia smithii Ashmead (Hymenoptera: Encyrtidae) in both fields. This is the first record of parasitism in E. heros adults in the state of Mato Grosso, Brazil.

scholarly journals Diapause and different seasonal morphs of Euschistus heros (Fabr.) (Hemiptera: Pentatomidae) in Northern Paraná State

2000 ◽  
Vol 29 (2) ◽  
pp. 205-218 ◽  
Author(s):  
Ana P. M. Mourão ◽  
Antônio R. Panizzi
Keyword(s):  
Mangifera Indica ◽  
Reproductive Organs ◽  
Stink Bug ◽  
Ligustrum Lucidum ◽  
Mango Tree ◽  
Euschistus Heros ◽  
Males And Females ◽  
Fallen Leaves ◽  
Diapause Incidence ◽  
In The Beginning

The Neotropical brown stink bug, Euschistus heros (Fabr.), was collected on sunflower [Helianthus annuus (L.)], soybean [Glycine max (L.) Merrill], star bristle [Acanthospermum hispidum (DC.)], and under fallen leaves of mango tree [Mangifera indica (L.)] and privet (Ligustrum lucidum Ait.), during one year, to evaluate the diapause incidence and the occurrence of different seasonal morphs. The majority of the insects (ca. 90%) with mature reproductive organs was observed during the summer (December-March), when E. heros was found on soybean or on sunflower; in the beginning of autumn, most insects (87%) showed immature reproductive organs, and they were found on star bristle and under fallen leaves. Bugs with mature reproductive organs had more developed shoulders (3.23 and 3.27 mm, for males and females, respectively) than bugs with immature organs (2.91 and 2.89 mm, for males and females, respectively). Two distinct body colors, dark brown and reddish brown, were observed. Nevertheless, the reddish brown was the predominant color of both mature and immature adults during all year. Adults were parasitized by Hexacladia smithii (Ashmead) (Hymenoptera: Encyrtidae) and Tachinidae mainly Trichopoda giacomellii (Blanchard) (Diptera: Tachinidae) (80% and 40% of parasitism in male and female, respectively) during summer (December), when the bugs colonized sunflower. In soybean, 12% of males and 10% of females were parasitized, whereas in fallen leaves, the parasitism rate was 5% in both sexes.These results showed that in autumn/winter (shorter photoperiod) the majority of the insects were inactive under fallen leaves, showing immature reproductive organs and less developed shoulders, indicating that, at this time, these bugs were in diapause.

scholarly journals Sublethal Concentration of Pyriproxyfen Reduces Testicular Connective Tissue Thickness in Euschistus heros Fabr. (Hemiptera: Pentatomidae)

2021 ◽  
Vol 13 (9) ◽  
pp. 27
Author(s):  
Janaina F. Matsumoto ◽  
Paulo S. G. Cremonez ◽  
Samuel Roggia ◽  
Angela M. F. Falleiros ◽  
Sheila M. Levy ◽  
...  
Keyword(s):  
Connective Tissue ◽  
Sublethal Concentration ◽  
Experimental Unit ◽  
Stink Bug ◽  
Hormone Analogue ◽  
Working Pressure ◽  
Morphometric Analyses ◽  
Euschistus Heros ◽  
Different Types ◽  
Randomized Experimental Design

The aim of this study was to determine the effect of the insecticide pyriproxyfen (Tiger™ 100 CE), juvenile hormone analogue, when applied in a sublethal LC30 concentration (0.668 mL a. i. L-1), on the morphological and morphometric parameters of external and internal connective tissue (CT) of the Neotropical-brown stink bug Euschistus heros testicles. The insecticide was applied on nymphs from the 4th instar using a Potter tower with a working pressure of 82.73 kPa (12 lb pol-²) and 1 mL of the emulsion per replicate. A completely randomized experimental design was used, consisting of two treatments (control and pyriproxyfen-treated), five repetitions, and 10 adults of E. heros per experimental unit. The insects were maintained under controlled conditions until the emergence of adults. After 48 h of emergence of adults, the testicles were collected, fixed, and processed for morphological and morphometric analyses. A change was observed in the collagen fibers of the CT of treated insects when compared with those of controls. It was also observed that both types of CT (dense irregular and loose) over the internal tunic of the treated insect were thinner than those in control insects. The analysis showed that pyriproxyfen significantly reduced the external and internal CT width and the conformation of its fibers in all the observed regions when compared with the controls; this may affect the production of the three different types of sperm present in this species.

scholarly journals Parâmetros biológicos de Euschistus heros (Fabricius, 1794) alimentado com diferentes dietas

2021 ◽  
Vol 4 (1) ◽  
pp. 152-159
Author(s):  
Yves Pierre Harry Dalleinne ◽  
◽  
Aline Giothi ◽  
Rosane Betina Wandscheer ◽  
Ivonete Hoss ◽  
...  
Keyword(s):  
Food Preference ◽  
Eating Habits ◽  
Feeding Preference ◽  
Stink Bug ◽  
Euschistus Heros ◽  
Males And Females ◽  
Seeds And Fruits

During their development, insects can suck plant structures like seeds and fruits being the preferred structures. The study aims to monitor the eating habits of these insects are relevant mainly in terms of food preference and development. The objective of this work was to analyze the feeding preference of Euschistus heros (brown stink bug) fed with 5 diets. The different diets studied resulted in insects in adult, with significant differences in the length of the nymph period, differences in the weights of males and females and variation in survival during the experiment.

scholarly journals Pentatomids associated with blackberry

2014 ◽  
Vol 38 (3) ◽  
pp. 256-261
Author(s):  
Mauricio Paulo Batistella Pasini ◽  
Alessandro Dal'Col Lúcio
Keyword(s):  
Rio Grande ◽  
Nezara Viridula ◽  
Brown Spot ◽  
Stink Bug ◽  
Stink Bugs ◽  
Rio Grande Do Sul ◽  
Dark Brown Spot ◽  
Euschistus Heros ◽  
Santa Maria ◽  
Piezodorus Guildinii

Information concerning the presence of stink bugs in blackberry (Rubus spp.) in Brazil is sparse. This study aimed to identify the stink bug species associated with blackberry, to establish the daily dynamics and evaluate the fruits damage. The experiment was conducted in Santa Maria, Rio Grande do Sul State, Brazil, in blackberry orchard. Presence and evaluations of stink bugs were done weekly through visual and sweeping samplings at different day times. Five species of pentatomids were identified: Piezodorus guildinii, Nezara viridula, Euschistus heros, Dichelops furcatus and Edessa meditabunda. The bugs attack the drupelets producing a dark brown spot and wrinkled berries.

Cytotoxicity of Piper aduncum (Piperaceae) essential oil in brown stink bug Euschistus heros (Heteroptera: Pentatomidae)

Ecotoxicology ◽  
2019 ◽  
Vol 28 (7) ◽  
pp. 763-770 ◽  
Author(s):  
Jamile F. S. Cossolin ◽  
Mônica J. B. Pereira ◽  
Luis C. Martínez ◽  
Leonardo M. Turchen ◽  
Muhammad Fiaz ◽  
...  
Keyword(s):  
Essential Oil ◽  
Stink Bug ◽  
Euschistus Heros ◽  
Heteroptera Pentatomidae ◽  
Piper Aduncum

Insect Pests and Yield Potential of Vegetable Soybean (Edamame) Produced in Georgia

2008 ◽  
Vol 43 (2) ◽  
pp. 225-240 ◽  
Author(s):  
R. M. McPherson ◽  
W. C. Johnson ◽  
E. G. Fonsah ◽  
P. M. Roberts
Keyword(s):  
Insect Pests ◽  
Insect Pest ◽  
Organic Production ◽  
Yield Potential ◽  
Stink Bug ◽  
Stink Bugs ◽  
Vegetable Soybean ◽  
Green Seed ◽  
Seed Damage ◽  
Seed Yields

A series of replicated field experiments was conducted with vegetable soybean (edamame), Glycine max (L.) Merrill, to assess the impacts of cultivars, planting dates, and insecticidal controls on insect pest abundance, crop damage and yield potential. The velvetbean caterpillar, Anticarsia gemmatalis Hübner, was the most common lepidopteran defoliator in this study, causing heavy defoliation in some years when left untreated. Other lepidopterans observed included the soybean looper, Pseudoplusia includens (Walker), and the green cloverworm, Hypena scabra (F.). Stink bugs, primarily the southern green stink bug, Nezara viridula (L.), also caused seed damage in some cultivars when left untreated. Stink bug damage exceeded expectations on edamame seeds when exposed to moderate stink bug densities (≤3 bugs per 25 sweeps). Other arthropods that were commonly observed included threecornered alfalfa hoppers, Spissistilus festinus (Say), grasshoppers, Melanoplus spp., and the potato leafhopper, Empoasca fabae (Harris). Arthropod infestations on edamame were similar to reported pest problems on conventional soybeans being produced for oil and meal. Midseason applications of the insecticides diflubenzuron plus l-cyhalothrin reduced insect pest populations, percentage of arthropod-induced defoliation and percentage of seeds damaged by stink bugs, but had little effect on edamame yields. Most defoliation and seed damage occurred during R5 development when seeds were approaching full size, thus only minimal yield reductions were noted. However, seed quality of the untreated vegetable soybeans would be unacceptable for the consumer. Total fresh green yields ranged from 2343–11,895 kg ha−1, depending on year, cultivar and planting date, whereas fresh green seed yields ranged from 1208–6,119 kg ha−1. Early-maturing edamame cultivars planted in April had fewer insect pests and less damage than the cultivars planted later. Avoidance of insect pests is an important production consideration for insect management, especially critical in an organic production system. The fresh green seed yields produced during this study demonstrate that this emerging alternative crop has the potential for economic success in the southern region, assuming that the arthropod pests are effectively managed to maintain acceptable edamame quality and yield.

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