scholarly journals A Physical Barrier Reduces Capture of Euschistus servus (Hemiptera: Pentatomidae) in Pheromone-Baited Traps Near Peach Trees

2019 ◽  
Vol 102 (1) ◽  
pp. 281
Keyword(s):  
Physical Barrier ◽  
Baited Traps ◽  
Euschistus Servus ◽  
Peach Trees

Seasonal Occurrence and Vertical Distribution of Euschistus servus (Say) and Euschistus tristigmus (Say) (Hemiptera: Pentatomidae) in Pecan Orchards2

2000 ◽  
Vol 35 (4) ◽  
pp. 421-431 ◽  
Author(s):  
Ted E. Cottrell ◽  
Carroll E. Yonce ◽  
Bruce W. Wood
Keyword(s):  
Vertical Distribution ◽  
Aggregation Pheromone ◽  
Ground Level ◽  
Seasonal Occurrence ◽  
Stink Bugs ◽  
Late Season ◽  
Baited Traps ◽  
Euschistus Servus ◽  
Trap Height ◽  
Combined Data

Euschistus servus (Say) and E. tristigmus (Say) were monitored near and in pecan orchards at ground level only and in pecan orchards from the ground to the upper canopy. Modified pyramidal traps, baited with Euschistus spp. aggregation pheromone, were placed on the ground along a hedgerow adjacent to a pecan orchard, at the orchard edge, and at the orchard center to monitor seasonal occurrence. Vertical distribution of E. servus and E. tristigmus was monitored by placing pheromone-baited traps at preselected heights. Traps on the ground along the hedgerow, orchard edge, and orchard center captured similar numbers of stink bugs each month from May through September, with an increase in October at all locations (combined data for both species). Single traps placed at different heights captured peak numbers of E. servus in early and late season; whereas, traps captured peak numbers of E. tristigmus during the late season. More E. servus were captured in traps on the ground than in traps in the canopy, but more E. tristigmus were captured in the canopy at 9 m. With two baited traps placed at different heights at the same tree, more E. servus were captured on the ground than in the lower or upper canopy, but most E. tristigmus were captured in the lower and upper canopy than on the ground. Placement of traps on the ground or at 9 m resulted in more captures of E. servus on the ground and more captures of E. tristigmus at 9 m. Although E. servus and E. tristigmus were captured both on the ground and in the pecan canopy, numbers of captured E. servus and E. tristigmus were affected by trap height. Thus, sampling Euschistus species in pecan, and possibly other arboreal habitats, should be done throughout the canopy.

scholarly journals Characterizing the Spatiotemporal Distribution of Three Native Stink Bugs (Hemiptera: Pentatomidae) across an Agricultural Landscape

Insects ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 854
Author(s):  
Erin E. Grabarczyk ◽  
Ted E. Cottrell ◽  
Glynn Tillman
Keyword(s):  
Agricultural Landscape ◽  
Management Strategies ◽  
Distribution Patterns ◽  
Spatiotemporal Distribution ◽  
Economic Losses ◽  
Agricultural Fields ◽  
Management Approach ◽  
Stink Bugs ◽  
Baited Traps ◽  
Euschistus Servus

Stink bugs (Hemiptera: Pentatomidae) are polyphagous pests that cause significant economic losses to a variety of crops. Although many species have been documented to aggregate within agricultural fields, much less is known regarding the timing and distribution of adults and nymphs within and between surrounding non-crop habitat. Therefore, we explored the spatiotemporal distribution of Euschistus servus (Say), Euschistus tristigmus (Say), and Chinavia hilaris (Say), three species of North American origin, and examined whether distribution patterns varied between species according to habitat. Stink bugs were monitored weekly for three years within an 18 km2 grid of pheromone-baited traps. We tested whether habitat affected distribution patterns, used spatial analysis by distance indices (SADIE) to identify aggregations, and visualized distributions with interpolated maps. Overall, E. servus adults were captured in crops, whereas E. tristigmus adults and nymphs were mainly captured in forests. Accordingly, distribution patterns of E. tristigmus were relatively stable over time, whereas aggregations of adult E. servus varied over space, and the timing of aggregations reflected the phenology of major crops. Chinavia hilaris was most often captured in forest, followed by crop habitat. Pest management strategies for stink bugs may require an area-based management approach that accounts for movement in agricultural fields and surrounding habitat.

Response of the Brown Stink Bug (Hemiptera: Pentatomidae) to the Aggregation Pheromone, Methyl (2E,4Z)-Decadienoate

2007 ◽  
Vol 42 (4) ◽  
pp. 548-557 ◽  
Author(s):  
T. C. Leskey ◽  
H. W. Hogmire
Keyword(s):  
Aggregation Pheromone ◽  
Stink Bug ◽  
Baited Traps ◽  
Euschistus Servus

Field-based experiments were conducted to evaluate the response of the abundant brown stink bug, Euschistus servus (Say), to commercially available pheromone lures containing methyl (2E,4Z)-decadienoate deployed in association with yellow pyramid traps. Euschistus servus aggregated over a zone of at least 3.14 m2 based on significantly greater numbers located on mullein plants located 1 m from baited traps compared with plants at 5 and 10 m. At this distance, ~96% of all adults located on mullein plants were not subsequently captured by baited traps. However, the presence of mullein plants near baited traps did not significantly reduce baited trap captures. Even if mullein plants were not present, baited trap captures remained statistically identical. Based on all adults captured in baited traps and located on surrounding mullein plants, 50% of all individuals that entered plots were captured in traps.

Effects of a Rainforest Road on Movements of Small Mammals: Mechanisms and Implications.

1992 ◽  
Vol 19 (1) ◽  
pp. 95 ◽  
Author(s):  
SE Burnett
Keyword(s):  
Genetic Isolation ◽  
Physical Barrier ◽  
The Road ◽  
Barrier Effects ◽  
Mobile Species ◽  
Live Trapping ◽  
Baited Traps ◽  
Rattus Fuscipes ◽  
The Individual ◽  
Road Crossing

Live-trapping was used to study the effects of a road on the movements of 4 species of terrestrial and scansorial mammals at 4 sites in upland vine-forest at Mt. Spec, N. Queensland, in February, March, May, June and August 1989. The road consisted of a 4-m wide bitumen strip at all sites; it was flanked by 1-m wide shoulders on each side at 2 sites and 4-m wide shoulders on each side at the other 2 sites. When baited traps were set on both sides of the road during grid-trapping, the road crossing rate of Uromys caudimaculatus (20% of recorded movements) was significantly greater than that of Rattus fuscipes and Antechinus flavipes (1.8% and 5.2% of movements, respectively). Melomys cervinipes was not recorded crossing the road under these conditions. R. fuscipes, M. cervinipes and A. flavipes were induced to cross the road more often when baited traps were placed on only one side of the road. The crossing rate of R. fuscipes was increased by translocating individuals across the road. The inhibition of movement caused by roads was attributed to psychological and/or sociological characteristics of the species and/or the individual rather than to the effect of a physical barrier. The results also indicate that the threat of genetic isolation of populations of these species dissected by roads less than 12 m wide is slight. However, less mobile species or wider roads may result in genetic isolation. Measures are suggested to alleviate the barrier effects of roads.

The Effect of Water Shortage on Potted Peach Trees in Relation to Ecophysiological Parameters and Infra-red Thermometry

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 541b-541
Author(s):  
Rita Giuliani ◽  
James A. Flore
Keyword(s):  
Chlorophyll Fluorescence ◽  
Gas Exchange ◽  
Early Detection ◽  
Water Potential ◽  
Canopy Temperature ◽  
Water Shortage ◽  
Development Rate ◽  
Plant Water ◽  
Infra Red ◽  
Peach Trees

Potted peach trees grown outdoors during the 1997 season were subjected to drought and subsequent rewatering to evaluate their dynamic response to soil water content. The investigation was primarily focused on the early detection of plant water stress to prevent negative effects on the growth. Leaf chlorophyll fluorescence and canopy temperature estimates (by infra-red thermometry) were conducted. Drought effect on physiological processes were detected through by estimates of canopy development rate, leaf gas-exchange measurements; while leaf water potential was measured to characterize plant water status. A decrease in the canopy's development rate was found 1 week after irrigation was stopped, which also coincided with a more-negative leaf water potential, whereas a decrease of the gas-exchange activities occurred several days later. No significant differences between the stressed and control plants were recorded by the chlorophyll fluorescence parameters (Fo, Fm, Fv and the ratio Fv/Fm), whereas the infra-red estimates of canopy temperature detected a slight increase of the canopy surface temperature (connected to the change of leaf energy balance and in relation to partial stomatal closure) on the non-irrigated plants 1 week after the beginning of the trial. The use of infra-red thermometry for early detection of water shortage is discussed.

Temperature Effects during Endodormancy Induction on Subsequent Anthesis and Growth of Peach Trees

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 452c-452 ◽  
Author(s):  
Schuyler D. Seeley ◽  
Raymundo Rojas-Martinez ◽  
James Frisby
Keyword(s):  
Temperature Effects ◽  
Shoot Length ◽  
The Other ◽  
Nighttime Temperatures ◽  
Peach Trees ◽  
Better Than

Mature peach trees in pots were treated with nighttime temperatures of –3, 6, 12, and 18 °C for 16 h and a daytime temperature of 20 °C for 8 h until the leaves abscised in the colder treatments. The trees were then chilled at 6 °C for 40 to 70 days. Trees were removed from chilling at 40, 50, 60, and 70 days and placed in a 20 °C greenhouse under increasing daylength, spring conditions. Anthesis was faster and shoot length increased with longer chilling treatments. Trees exposed to –3 °C pretreatment flowered and grew best with 40 days of chilling. However, they did not flower faster or grow better than the other treatments with longer chilling times. There was no difference in flowering or growth between the 6 and 12 °C pretreatments. The 18 °C pretreatment resulted in slower flowering and very little growth after 40 and 50 days of chilling, but growth was comparable to other treatments after 70 days of chilling.

THE USE OF SOME ORGANIC AND BIO-FERTILIZERS FOR EARLIGRANDE PEACH TREES FERTILIZATION UNDER NORTH SINAI CONDITIONS A: VEGETATIVE GROWTH AND LEAF CHEMICAL CONTENT

2018 ◽  
Vol 7 (2) ◽  
pp. 99-114
Author(s):  
Abdaallah El-Kharafen ◽  
Hany El-Alakmy ◽  
Roqia Ahmed ◽  
Mohamed Sourour ◽  
Mohamed ElDeep
Keyword(s):  
Vegetative Growth ◽  
Chemical Content ◽  
Peach Trees ◽  
North Sinai

scholarly journals Boll Weevil Control Strategies: Regional Benefits and Costs

1977 ◽  
Vol 9 (1) ◽  
pp. 129-135 ◽  
Author(s):  
C. Robert Taylor ◽  
Ronald D. Lacewell
Keyword(s):  
Insect Pests ◽  
Control Strategies ◽  
Boll Weevil ◽  
Early Season ◽  
Trap Crops ◽  
Southern States ◽  
Baited Traps ◽  
Mexico Border ◽  
Benefits And Costs ◽  
The U.S

Throughout the southern states and at the federal level, much attention is being focused on the appropriate strategy for controlling cotton insect pests, particularly the boll weevil. This paper presents estimated economic impacts to farmers, regions and consumers of implementing three alternative boll weevil control strategies. One strategy evaluated is a proposed boll weevil eradication program which involves integrating many controls including insecticides, reproduction-diapause control by early season stalk destruction, pheromone-baited traps, trap crops, early season control with insecticide, and massive releases of sterile boll weevils. The plan is to eradicate the boll weevil in the U.S., and then indefinitely maintain a barrier at the U.S.-Mexico border to prevent future weevil immigration to the U.S.

scholarly journals Dermatillomania: Strategies for Developing Protective Biomaterials/Cloth

Pharmaceutics ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 341
Author(s):  
Priusha Ravipati ◽  
Bice Conti ◽  
Enrica Chiesa ◽  
Karine Andrieux
Keyword(s):  
Alternative Treatment ◽  
Negative Impact ◽  
Treatment Strategies ◽  
Current Treatment ◽  
Primary Objective ◽  
Neuropsychiatric Disorder ◽  
Physical Barrier ◽  
Physical Treatment ◽  
Pubmed Database ◽  
Prevention Of Infections

Dermatillomania or skin picking disorder (SPD) is a chronic, recurrent, and treatment resistant neuropsychiatric disorder with an underestimated prevalence that has a concerning negative impact on an individual’s health and quality of life. The current treatment strategies focus on behavioral and pharmacological therapies that are not very effective. Thus, the primary objective of this review is to provide an introduction to SPD and discuss its current treatment strategies as well as to propose biomaterial-based physical barrier strategies as a supporting or alternative treatment. To this end, searches were conducted within the PubMed database and Google Scholar, and the results obtained were organized and presented as per the following categories: prevalence, etiology, consequences, diagnostic criteria, and treatment strategies. Furthermore, special attention was provided to alternative treatment strategies and biomaterial-based physical treatment strategies. A total of six products with the potential to be applied as physical barrier strategies in supporting SPD treatment were shortlisted and discussed. The results indicated that SPD is a complex, underestimated, and underemphasized neuropsychiatric disorder that needs heightened attention, especially with regard to its treatment and care. Moreover, the high synergistic potential of biomaterials and nanosystems in this area remains to be explored. Certain strategies that are already being utilized for wound healing can also be further exploited, particularly as far as the prevention of infections is concerned.

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