Relative Abundance of Stink bugs (Hemiptera: Pentatomidae) in Southwestern Colombia Rice Fields

1995 ◽  
Vol 30 (4) ◽  
pp. 463-467 ◽  
Author(s):  
Alberto Pantoja ◽  
Eugenia Daza ◽  
César Garcia ◽  
Olga I. Mejía ◽  
Dave A. Rider
Keyword(s):  
Latin America ◽  
Relative Abundance ◽  
Abundant Species ◽  
Rice Fields ◽  
Geographical Range ◽  
Stink Bug ◽  
Stink Bugs ◽  
Valle Del Cauca ◽  
Latin America Countries

Relative abundance of stink bugs was determined from 01 May 1989 to 30 September 1992 in 80 commercial rice fields in Colombia and in 12 selected rice-producing countries of Latin America. Fifteen stink bug species from nine genera were found in Colombia. The species are Oebalus ornatus (Sailer), Mormidea maculata Dallas, Tribraca obscurata Bergroth, M. pictiventris Stål, O. pugnax torridus (Sailer), Proxys punctulatus (Palisot de Beauvois), O. insularis (Stål), T. limbativentris Stål, and O. ypsilongriseus (De Greer). In Valle del Cauca Department in southwestern Colombia, the most abundant species was O. ornatus representing 94.1% of the stink bugs collected. Seven species comprised the remaining 5.9%. Oebalus ornatus and O. ypsilongriseus were recovered from seven Latin America countries and had the widest geographical range of the stink bugs species collected during the study.

Relative Abundance of the Stink Bug (Hemiptera: Pentatomidae) Complex Infesting Rice in the Everglades Agricultural Area of Florida

2020 ◽  
Vol 113 (3) ◽  
pp. 1582-1585
Author(s):  
Matthew T VanWeelden ◽  
Ronald H Cherry ◽  
Michael Karounos
Keyword(s):  
Relative Abundance ◽  
Abundant Species ◽  
The United States ◽  
Rice Fields ◽  
Agricultural Area ◽  
Stink Bug ◽  
Everglades Agricultural Area ◽  
Oebalus Pugnax ◽  
Panicum Dichotomiflorum ◽  
Growing Region

Abstract Florida’s rice stink bug complex comprises three species; Oebalus pugnax (F.), O. insularis (Stal), and O. ypsilongriseus (DeGeer), the latter two of which are invasive and exclusive to Florida within the United States. A series of surveys were conducted in 2017 and 2018 to determine the relative abundance of the three species throughout Florida’s rice growing region within the Everglades Agricultural Area, in addition to comparing their seasonality within crop and noncrop habitats. Sampling occurred in commercial rice fields and adjacent transects of graminaceous noncrop hosts using sweep nets. Oebalus pugnax (52.7%) and O. insularis (61.7%) were the most abundant species in 2017 and 2018, respectively. Both species were more prevalent in rice fields compared to transects of noncrop hosts. Oebalus ypsilongriseus remained in low abundance relative to O. pugnax and O. insularis, and did not differ in numbers collected among rice and noncrop hosts. Of the noncrop hosts in transects, Panicum dichotomiflorum (fall panicum) was the most abundant across both years. This study is the first report of Oebalus species feeding on Echinochloa crus-galli (common barnyardgrass) in Florida. This study shows that the invasive O. insularis continues to increase in abundance, and has surpassed O. pugnax in terms of regional populations. These results emphasize the need for additional studies to assess the interactions among O. insularis and other Oebalus species in addition to its feeding behavior in Florida rice.

Effect of Weeds on Rice Stink Bug (Hemiptera: Pentatomidae) Populations in Florida Rice Fields

2005 ◽  
Vol 40 (4) ◽  
pp. 378-384 ◽  
Author(s):  
Ron Cherry ◽  
Andy Bennett
Keyword(s):  
Weed Control ◽  
Rice Fields ◽  
Stink Bug ◽  
Stink Bugs ◽  
Large Numbers ◽  
Oebalus Pugnax ◽  
Panicum Dichotomiflorum ◽  
Rice Stink Bug

The effect of weeds on rice stink bug, Oebalus pugnax (F.), populations was studied in Florida rice fields. Fall panicum, Panicum dichotomiflorum Michaux, was the most common grassy weed found in weedy areas of rice fields, and significantly more rice stink bugs were found in these weedy areas vs nonweedy areas in the fields. Large numbers of rice stink bugs also were found in unmowed roadsides containing heading weeds, especially coast cockspur, Echinochloa walteri (Pursh) Heller. In contrast, few rice stink bugs were found in mowed roadsides which prevented weed heading around rice fields. Our study shows that weed control helps reduce rice stink bug populations in Florida rice.

Relationship Between Soybean Maturity Group and the Phenology and Abundance of Stink Bugs (Heteroptera: Pentatomidae): Impact on Yield and Quality

1996 ◽  
Vol 31 (2) ◽  
pp. 199-208 ◽  
Author(s):  
Robert M. McPherson
Keyword(s):  
Seed Quality ◽  
Abundant Species ◽  
Group Iv ◽  
Stink Bug ◽  
Stink Bugs ◽  
Yield And Quality ◽  
Population Distributions ◽  
Glycine Max L ◽  
Seasonal Population ◽  
Maturity Groups

Soybean, Glycine max (L.) Merrill, varieties in maturity groups IV–VIII were sampled weekly for stink bugs from mid-June to mid-October in 1993 and 1994. Plots were either treated with tralomethrin to control stink bugs or left untreated to measure yield and seed quality losses to the pests. In 1993, stink bug populations peaked at 8.3 per 25 sweeps in the Group IV NK S4884 in late-August, 6 wks after the R4 growth stage (full pod without seeds). As they were declining in the Group IV soybean, populations were rapidly increasing in the later-maturing varieties, reaching population peaks 5 to 6 wks after R4 in all maturity groups. Population peaks in the later-maturing varieties were higher than in the maturity groups IV and V. Similar seasonal population distributions were observed in 1994, although populations peaked 4 to 6× higher than in 1993. Both Nezara viridula (L.) and Acrosternum hilare (Say) were common in 1993 when populations were relatively low. In 1994, N. viridula was the most abundant species. Euschistus seruus (Say) was present at low population densities both years. Tralomethrin treatments significantly decreased the stink bug damage to seeds. Seed weights and yield also were higher in the treated plots of most varieties. Significant correlations occurred for stink bug population peaks with percentage kernel damage, yield reductions and 100-seed weight reductions.

Stink Bugs in Florida Rice

EDIS ◽  
2013 ◽  
Vol 2013 (11) ◽  
Author(s):  
Ron Cherry
Keyword(s):  
United States ◽  
Dominant Species ◽  
The United States ◽  
Rice Production ◽  
Rice Fields ◽  
Stink Bug ◽  
Stink Bugs ◽  
First Report ◽  
Important Pest ◽  
Species Being

Although many different insects can be found in rice fields in Florida, stink bugs are currently considered the most important pest. Jones and Cherry reported that the rice stink bug was the dominant species, comprising more than 95% of the total stink bug population. Cherry et al. (1998) reported that the stink bug Oebalus ypsilongriseus was widespread in Florida rice fields. This was the first report of this species being found in commercial rice fields in the United States. Cherry and Nuessly (2010) reported that the stink bug Oebalus insularis is now widespread in Florida rice fields. This was the first report of this species being found in commercial rice fields in the United States. The stink bug complex attacking Florida rice is the most diversified and unique stink bug complex in US rice production. This 4-page fact sheet was written by Ron Cherry, and published by the UF Department of Entomology and Nematology, October 2013. http://edis.ifas.ufl.edu/in1009

scholarly journals Inhibitory Copulation Effect of Vibrational Rival Female Signals of Three Stink Bug Species as a Tool for Mating Disruption

Insects ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 177
Author(s):  
Aline Moreira Dias ◽  
Miguel Borges ◽  
Maria Carolina Blassioli Moraes ◽  
Matheus Lorran Figueira Coelho ◽  
Andrej Čokl ◽  
...  
Keyword(s):  
Pest Management ◽  
Mating Behavior ◽  
Mating Disruption ◽  
Management Strategies ◽  
Stink Bug ◽  
Stink Bugs ◽  
Vibratory Communication ◽  
Communication Signals ◽  
Long Duration ◽  
Bean Plants

Stink bugs are major pests in diverse crops around the world. Pest management strategies based on insect behavioral manipulation could help to develop biorational management strategies of stink bugs. Insect mating disruption using vibratory signals is an approach with high potential for pest management. The objective of this work was to investigate the effect of conspecific female rival signals on the mating behavior and copulation of three stink bug species to establish their potential for mating disruption. Previously recorded female rival signals were played back to bean plants where pairs of the Neotropical brown stink bug, Euschistus heros, and two green stink bugs, Chinavia ubica and Chinavia impicticornis were placed. Vibratory communication and mating behavior were recorded for each pair throughout the experimental time (20 min). Female rival signals show a disrupting effect on the reproductive behavior of three conspecific investigated stink bug species. This effect was more clearly expressed in E. heros and C. ubica than in C. impicticornis. The likelihood of copulating in pairs placed on control plants, without rival signals, increased 29.41 times in E. heros, 4.6 times in C. ubica and 1.71 times in C. impicticornis. However, in the last case, the effect of female rivalry signals in copulation was not significant. The effect of mating disruption of female rival signals of the three stink bug species may originate from the observed reduction in specific vibratory communication signals emitted, which influences the duet formation and further development of different phases of mating behavior. Our results suggest that female rival signals have potential for application in manipulation and disruption of mating behavior of stink bugs. Further work needs to focus on the effects of female rival signals used in long duration experiments and also their interactions with chemical communication of stink bugs.

scholarly journals Trouble in Paradise? A comparison of 1953 and 2005 benthonic foraminiferal seafloor assemblages at the Ibis Field, offshore eastern Trinidad, West Indies

2006 ◽  
Vol 25 (2) ◽  
pp. 157-164 ◽  
Author(s):  
Brent Wilson
Keyword(s):  
Relative Abundance ◽  
Nutrient Enrichment ◽  
Abundant Species ◽  
Nutrient Supply ◽  
South American ◽  
Sufficient Time ◽  
Phytoplankton Primary Production ◽  
Environmental Perturbations ◽  
Run Off ◽  
Shrimp Farms

Abstract. Foraminiferal communities are not static, but change in response to environmental perturbations. Given sufficient time, the change will be recorded in the total (live+dead) seafloor assemblage, from which valuable information regarding environmental trends can be obtained by re-sampling assemblages at the decadal scale.The seafloor assemblage in the 5 km × 6 km Ibis Field, off southeast Trinidad, first surveyed in 1953, was re-examined in 2005. The fauna had changed markedly between the surveys. Overall increases in the proportional abundances of Uvigerina subperegrina, Ammonia pauciloculata/Rolhausenia rolhauseni and Pseudononion atlanticum indicate an increase in nutrient supply that apparently killed off Cibicidoides pseudoungerianus and Miliolinella subrotunda, and reduced the relative abundance of Hanzawaia concentrica, but did not affect the relative abundance of Cancris sagrai. As shown by similar 1953 and 2005 planktonic/benthonic foraminiferal ratios, the increased nutrient supply impacted on both surface and bottom waters.Of the six most abundant species in 2005, five showed the same general biogeographical distributions within the field in 1953 and 2005. However, whereas the proportional abundance of Uvigerina subperegrina in 1953 increased southwards, in 2005 it increased northwards.Trinidad cannot be the source for the nutrient enrichment: the island lies down-current from the Ibis Field. Sources must therefore be sought up-current and to the southeast, in the Amazon, Essequibo and Orinoco river basins, or along the South American shoreline. It is speculated that the nutrient enrichment may be a consequence of increased phytoplankton primary production associated with nitrogen-rich run-off from South American sugarcane plantations, or from flushing of organic carbon from poorly regulated sewage systems or shrimp farms in South America.

scholarly journals Expanding Pertussis Epidemiology in 6 Latin America Countries through the Latin American Pertussis Project

2017 ◽  
Vol 23 (13) ◽  
Author(s):  
Veronica A. Pinell-McNamara ◽  
Anna M. Acosta ◽  
Maria Cristina Pedreira ◽  
Ana F. Carvalho ◽  
Lucia Pawloski ◽  
...  
Keyword(s):  
Latin America ◽  
Latin American ◽  
Latin America Countries ◽  
Pertussis Epidemiology

Effect of fire regime on the grass community of the humid savanna of Lamto, Ivory Coast

2018 ◽  
Vol 35 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Kouamé Fulgence Koffi ◽  
Aya Brigitte N’Dri ◽  
Jean-Christophe Lata ◽  
Souleymane Konaté ◽  
Tharaniya Srikanthasamy ◽  
...  
Keyword(s):  
Relative Abundance ◽  
Ivory Coast ◽  
Fire Regime ◽  
Fire Regimes ◽  
Abundant Species ◽  
Grass Species ◽  
The Third ◽  
Humid Savanna ◽  
The Impact ◽  
Tussock Grasses

AbstractThis study assesses the impact of four fire treatments applied yearly over 3 y, i.e. early fire, mid-season fire, late fire and no fire treatments, on the grass communities of Lamto savanna, Ivory Coast. We describe communities of perennial tussock grasses on three replicated 5 × 5-m or 10 × 5-m plots of each fire treatment. Tussock density did not vary with fire treatment. The relative abundance of grass species, the circumference of grass tussocks and the probability of having a tussock with a central die-back, varied with fire treatment. Mid-season fire had the highest proportion of tussocks with a central die-back while the late fire had the smallest tussocks. Tussock density, circumference, relative abundance and probability of having a central die-back varied with species. Andropogon canaliculatus and Hyparrhenia diplandra were the most abundant of the nine grass species. They had the largest tussocks and the highest proportion of tussock with a central die-back. Loudetia simplex was the third most abundant species but was very rare in no fire plots. The distribution of tussock circumferences was right skewed and dominated by small tussocks. The proportion of the tussocks with a central die-back strongly increased with circumference, which could lead to tussock fragmentation. Taken together, this study suggests that fire regimes impact grass demography and that this impact depends on grass species and tussock size.

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