Major Hemipteran Pests

El-Shafie, Hamadttu A. F.; Peña, Jorge E.; Khalaf, Mohammed Zaidan

doi:10.1007/978-3-319-24397-9_7

Cited by 6 publications

(5 citation statements)

References 39 publications

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“…Emulsifiable concentrate (EC) and ultra-low volume formulations of organophosphorus and pyrethroid insecticides are more often used for ground and aerial applications, respectively 12 , 46 , 47 . Serious pest infestations in date palm orchards even after heavy aerial and surface spraying confer a challenge for the pest exterminators to devise suitable and environment-friendly pest management strategies 23 , 27 , 47 , 48 . Over and repeated use of pesticides may cause side effects to the non-target organisms and pose health risks to consumers as well as other organisms by contributing in environmental pollution 1 – 5 .…”

Section: Discussionmentioning

confidence: 99%

Resistance to deltamethrin and fenitrothion in dubas bug, Ommatissus lybicus de Bergevin (Homoptera: Tropiduchidae) and possible biochemical mechanisms

Khan

Al-Ghafri

Al-Khatri

et al. 2020

Sci Rep

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Environmental pollution, ill-effects on human health, insecticide resistance development and insect pest resurgence are some serious problems that may arise due to excessive chemical spraying for pest control. Despite of heavy aerial and surface insecticide spraying, incomplete control of Ommatissus lybicus de Bergevin 1930 (Homoptera: Tropiduchidae) is reported in Oman every year, which requires investigation of insecticides resistance in pest. fifteen populations of O. lybicus, collected from diverse vicinities were exposed along with a deltamethrin-selected (DeL-SeL) and lab-susceptible (LAB-SUS) strain to deltamethrin and fenitrothion insecticides in bioassay tests for estimation of their resistance status. All the field populations of O. lybicus, exhibited minor (RR = 3-5-folds) to low (RR = 5-10-folds) levels of resistance to deltamethrin, however, two out fifteen populations collected from Al-Hajir and Sint were found susceptible against fenitrothion (RR < 3-folds). Enzyme assays were conducted to detect the activities of cytochrome p-450-reductase (CPR), glutathione s-transferase (GST) and acetylcholinesterase (AChE) in the field collected, DEL-SEL and LAB-SUS strains of O. lybicus. Results revealed significantly increased activities of all enzymes in the field collected as well as DEL-SEL strains of O. lybicus when compared with LAB-SUS strains.

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Section: Discussionmentioning

confidence: 99%

Resistance to deltamethrin and fenitrothion in dubas bug, Ommatissus lybicus de Bergevin (Homoptera: Tropiduchidae) and possible biochemical mechanisms

Khan

Al-Ghafri

Al-Khatri

et al. 2020

Sci Rep

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“…Our results found that the highest level of DB infestation was negatively correlated with the row spacing. An early study [ 36 ] reported that well-spaced palms never become infested with DB. Properly spaced palms allow for wind movement and sunlight between trees [ 3 , 37 , 38 ].…”

Section: Discussionmentioning

confidence: 99%

“…In Oman, there is increasing interest in biopesticides and safe natural enemies of DB. For example, the egg parasitoids Pseudoligosita babylnoica (Hymenoptera: Trichogrammatidae) have been recorded in some locations and can be considered as a potential biological control agent for DBs [ 36 ]. Generally, such natural products may be highly effective but require extensive knowledge of target DB infestation and well-timed and thorough application techniques.…”

Section: Discussionmentioning

confidence: 99%

Impacts of human-related practices on Ommatissus lybicus infestations of date palm in Oman

et al. 2017

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Date palm cultivation is economically important in the Sultanate of Oman, with significant financial investments coming from both the government and private individuals. However, a widespread Dubas bug (DB) (Ommatissus lybicus Bergevin) infestation has impacted regions including the Middle East, North Africa, Southeast Russia, and Spain, resulting in widespread damages to date palms. In this study, techniques in spatial statistics including ordinary least squares (OLS), geographically weighted regression (GRW), and exploratory regression (ER) were applied to (a) model the correlation between DB infestations and human-related practices that include irrigation methods, row spacing, palm tree density, and management of undercover and intercropped vegetation, and (b) predict the locations of future DB infestations in northern Oman. Firstly, we extracted row spacing and palm tree density information from remote sensed satellite images. Secondly, we collected data on irrigation practices and management by using a simple questionnaire, augmented with spatial data. Thirdly, we conducted our statistical analyses using all possible combinations of values over a given set of candidate variables using the chosen predictive modelling and regression techniques. Lastly, we identified the combination of human-related practices that are most conducive to the survival and spread of DB. Our results show that there was a strong correlation between DB infestations and several human-related practices parameters (R2 = 0.70). Variables including palm tree density, spacing between trees (less than 5 x 5 m), insecticide application, date palm and farm service (pruning, dethroning, remove weeds, and thinning), irrigation systems, offshoots removal, fertilisation and labour (non-educated) issues, were all found to significantly influence the degree of DB infestations. This study is expected to help reduce the extent and cost of aerial and ground sprayings, while facilitating the allocation of date palm plantations. An integrated pest management (IPM) system monitoring DB infestations, driven by GIS and remote sensed data collections and spatial statistical models, will allow for an effective DB management program in Oman. This will in turn ensure the competitiveness of Oman in the global date fruits market and help preserve national yields.

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“…It is recorded in many Arab countries, North Africa, Iran, and Pakistan . Prolonged high infestations of DBs are likely to cause economic, human health or environmental damage to its ecosystem …”

Section: Introductionmentioning

confidence: 99%

Modelling the potential effects of climate factors on Dubas bug (Ommatissus lybicus) presence/absence and its infestation rate: A case study from Oman

Kindi

Kwan

Andrew

et al. 2019

Pest Management Science

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BACKGROUND: Ommatissus lybicus de Bergevin (Hemiptera: Tropiduchidae) (Dubas Bug, DB) is an insect pest attacking date palms. It occurs in Arab countries including Oman. In this paper, the logistic, ordinary least square, and geographical weighted regressions were applied to model the absence/presence and density of DB against climate factors. A method is proposed for modelling spatially correlated prorations annually over the study period, based on annual and seasonal outbreaks. The historical 2006-2015 climate data were obtained from weather stations located in nine governorates in northern Oman, while dataloggers collected the 2017 microclimate data in eight of these nine governorates.RESULTS: Logistic regression model showed the percentages of correctly predicted values using a cut-off point of 0.5 were 90%, 88% and 84%, indicating good classification accuracy. OLS and GWR models showed an overall trend of strong linear correlation between DB infestation levels and short-and long-term climate factors. The three models suggested that precipitation, elevation, temperature, humidity, wind direction and wind speed are important in influencing the spatial distribution and the presence/absence of dense DB populations. CONCLUSION:The results provide an improved understanding of climate factors that impact DB's spread and is considered useful for managing DB infestations in date palm plantations.

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Major Hemipteran Pests

Cited by 6 publications

References 39 publications

Resistance to deltamethrin and fenitrothion in dubas bug, Ommatissus lybicus de Bergevin (Homoptera: Tropiduchidae) and possible biochemical mechanisms

Resistance to deltamethrin and fenitrothion in dubas bug, Ommatissus lybicus de Bergevin (Homoptera: Tropiduchidae) and possible biochemical mechanisms

Impacts of human-related practices on Ommatissus lybicus infestations of date palm in Oman

Modelling the potential effects of climate factors on Dubas bug (Ommatissus lybicus) presence/absence and its infestation rate: A case study from Oman

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