scholarly journals Design and Validation of Computerized Flight-Testing Systems with Controlled Atmosphere for Studying Flight Behavior of Red Palm Weevil, Rhynchophorus ferrugineus (Olivier)

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 2112
Author(s):  
Maged Mohammed ◽  
Hamadttu El-Shafie ◽  
Nashi Alqahtani
Keyword(s):  
Flight Tunnel ◽  
Flight Behavior ◽  
Processing Unit ◽  
Controlled Atmosphere ◽  
Rhynchophorus Ferrugineus ◽  
Data Logging ◽  
Red Palm Weevil ◽  
Flight Testing ◽  
Flight Mill ◽  
The Mean

Understanding the flight characteristics of insect pests is essential for designing effective strategies and programs for their management. In this study, we designed, constructed, and validated the performance of modern flight-testing systems (flight mill and flight tunnel) for studying the flight behavior of red palm weevil (RPW) Rhynchophorus ferrugineus (Olivier) under a controlled atmosphere. The flight-testing mill consisted of a flight mill, a testing chamber with an automatically controlled microclimate, and a data logging and processing unit. The data logging and processing unit consisted of a USB digital oscilloscope connected with a laptop. We used MATLAB 2020A to implement a graphical user interface (GUI) for real-time sampling and data processing. The flight-testing tunnel was fitted with a horizontal video camera to photograph the insects during flight. The program of Image-Pro plus V 10.0.8 was used for image processing and numerical data analysis to determine weevil tracking. The mean flight speed of RPW was 82.12 ± 8.5 m/min, and the RPW stopped flying at the temperature of 20 °C. The RPW flight speed in the flight tunnel was slightly higher than that on the flight mill. The angular deceleration was 0.797 rad/s2, and the centripetal force was 0.0203 N when a RPW tethered to the end of the rotating arm. The calculated moment of inertia of the RPW mass and the flight mill's rotating components was 9.521 × 10−3 N m2. The minimum thrust force needed to rotate the flight mill was 1.98 × 10−3 N. Therefore, the minimum power required to rotate the flight mill with the mean revolution per min of 58.02 rpm was approximately 2.589 × 10−3 W. The designed flight-testing systems and their applied software proved productive and useful tools in unveiling essential flight characteristics of test insects in the laboratory.

The Dynamic Fluctuation of Red Palm Weevil Rhynchophorus Ferrugineus (Olivier) in Makkah Al-Mukarramah city

2021 ◽  
Vol 18 (1) ◽  
pp. 85-97
Author(s):  
Al- Otaibi Wafa Mohammed ◽  
Khalid Mohammed Alghamdi Alghamdi ◽  
Jazem A. Mahyoub
Keyword(s):  
Relative Humidity ◽  
Population Density ◽  
Seasonal Abundance ◽  
Significant Activity ◽  
Rhynchophorus Ferrugineus ◽  
Red Palm Weevil ◽  
Gulf Region ◽  
Palm Weevil ◽  
The Mean ◽  
Dynamic Fluctuation

The red palm weevil(RPW),Rhynchophorus ferrugineus (Olivier) (Coleoptera: Dryophthoridae) is one of the most threatening pests of date palm trees in Kingdom of Saudi Arabia (KSA). Which considered as category Iinsect pest in the Gulf region and the Middle East, according toFood and Agriculture Organization (FAO). Therefore, this research was planned to study the dynamic fluctuation of RPW, its relationship to some environmental factors (temperature & relative humidity) and to determine sexual ratio in Makkah city during 2019. In addition to clarifying color preference by using food bait pheromone traps (FBPTs). The results revealedthe presence of RPW throughout the year, with significant differences in numerical densities according to different collection times. The study also recorded the highest population density during April & March, and it was the highest significantly compared to that were collected during July, October, August and September. The study also recorded two peaks of RPW activity throughout the year. A major summit in April and a smaller summit in December. Statistical analysis results showed that the RPW has significant activity at spring compared to the other seasons, while the least active for RPW was at autumn.The results also showed a negative significant correlation between the mean population density of RPW and temperature; and a positive non-significant correlation between seasonal abundance and relative humidity, with significant differences between the mean of male and female with ratio(1:3), respectively. Black traps were more effective and significantly in attracting RPW than other tested colors.

Quarantine Protocol Against Coleopteran Borers in Date Palm Offshoots Using Eco2 Fume Gas

2020 ◽  
Vol 31 (4) ◽  
pp. 190-192
Author(s):  
H.A. El-Shafie ◽  
M.E. Mohammed ◽  
A.A. Sallam
Keyword(s):  
Date Palm ◽  
Exposure Period ◽  
Rhynchophorus Ferrugineus ◽  
Internal Tissue ◽  
Red Palm Weevil ◽  
Rhinoceros Beetle ◽  
Planting Material ◽  
Palm Weevil ◽  
Longhorn Beetle ◽  
The World

Date palm offshoots represent an important source of planting material in many date palm-growing countries around the world. Infestation by the red palm weevil ((RPW) Rhynchophorus ferrugineus), the longhorn beetle ((LHB) Jebusaea hammerschmidti) and the rhinoceros beetle ((OB) Oryctes spp.) hinders commercialization and movement of these offshoots. An effective quarantine protocol, with exposure period of 72 h at 25 °C using ECO2FUME (EF) with phosphine concentration of 1500 ppm has been developed for date palm offshoots against these coleopteran internal tissue borers.

scholarly journals The Effect of Gut Bacteria on the Physiology of Red Palm Weevil, Rhynchophorus ferrugineus Olivier and Their Potential for the Control of This Pest

Insects ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 594
Author(s):  
Qian-Xia Liu ◽  
Zhi-Ping Su ◽  
Hui-Hui Liu ◽  
Sheng-Ping Lu ◽  
Bing Ma ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Current Knowledge ◽  
Management Strategies ◽  
Gut Bacteria ◽  
Economic Losses ◽  
Rhynchophorus Ferrugineus ◽  
Intestinal Immunity ◽  
Red Palm Weevil ◽  
Nutrient Metabolism ◽  
Palm Weevil

Red Palm Weevil (RPW), Rhynchophorus ferrugineus Olivier, is a notorious pest, which infests palm trees and has caused great economic losses worldwide. At present, insecticide applications are still the main way to control this pest. However, pesticide resistance has been detected in the field populations of RPW. Thus, future management strategies based on the novel association biological control need be developed. Recent studies have shown that the intestinal tract of RPW is often colonized by multiple microbial species as mammals and model insects, and gut bacteria have been found to promote the growth, development and immune activity of RPW larvae by modulating nutrient metabolism. Furthermore, two peptidoglycan recognition proteins (PGRPs), PGRP-LB and PGRP-S1, can act as the negative regulators to modulate the intestinal immunity to maintain the homeostasis of gut bacteria in RPW larvae. Here, we summarized the current knowledge on the gut bacterial composition of RPW and their impact on the physiological traits of RPW larvae. In contrast with metazoans, it is much easier to make genetic engineered microbes to produce some active molecules against pests. From this perspective, because of the profound effects of gut bacteria on host phenotypes, it is promising to dissect the molecular mechanisms behind their effect on host physiology and facilitate the development of microbial resource-based management methods for pest control.

scholarly journals A Comparative Study on the Microbial Communities of Rhynchophorus ferrugineus (Red Palm Weevil)-Infected and Healthy Palm Trees

2021 ◽  
Author(s):  
N. Alshammari ◽  
Meshari Alazmi ◽  
Naimah A. Alanazi ◽  
Abdel Moneim E. Sulieman ◽  
Vajid N. Veettil ◽  
...  
Keyword(s):  
Microbial Communities ◽  
16S Rrna Gene Sequencing ◽  
Rrna Gene ◽  
Rhynchophorus Ferrugineus ◽  
Tree Trunk ◽  
Red Palm Weevil ◽  
Healthy Tree ◽  
Palm Trees ◽  
Infected Tree ◽  
Palm Weevil

AbstractSeveral studies have investigated palm trees’ microbiota infected with red palm weevil (RPW) (Rhynchophorus ferrugineus), the major pest of palm trees. This study compared the microbial communities of infected and uninfected palm trees in the Hail region, Northern Saudi Arabia, determined by high-throughput 16S rRNA gene sequencing by Illumina MiSeq. The results indicated that taxonomic diversity variation was higher for infected tree trunk than the healthy tree trunk. Soil samples from the vicinity of healthy and infected trees did not have a significant variation in bacterial diversity. Myxococcota, Acidobacteriota, and Firmicutes were the dominant phyla in RPW-infected tree trunk, and Pseudomonadaceae was the most prominent family. This study is the first report on the characterization of RPW-infected and healthy palm trees’ microbiome.

scholarly journals Genome-Wide Identification of the Gustatory Receptor Gene Family of the Invasive Pest, Red Palm Weevil, Rhynchophorus ferrugineus (Olivier, 1790)

Insects ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 611
Author(s):  
Patamarerk Engsontia ◽  
Chutamas Satasook
Keyword(s):  
Gene Family ◽  
Molecular Basis ◽  
Receptor Gene ◽  
Invasive Pest ◽  
Effective Control ◽  
Gustatory Receptor ◽  
Rhynchophorus Ferrugineus ◽  
Red Palm Weevil ◽  
Palm Weevil ◽  
Receptor Gene Family

The red palm weevil (Rhynchophorus ferrugineus) is a highly destructive pest of oil palm, date, and coconut in many parts of Asia, Europe, and Africa. The Food and Agriculture Organization of the United Nations has called for international collaboration to develop a multidisciplinary strategy to control this invasive pest. Previous research focused on the molecular basis of chemoreception in this species, particularly olfaction, to develop biosensors for early detection and more effective bait traps for mass trapping. However, the molecular basis of gustation, which plays an essential role in discriminating food and egg-laying sites and chemical communication in this species, is limited because its complete gustatory receptor gene family still has not been characterized. We manually annotated the gene family from the recently available genome and transcriptome data and reported 50 gustatory receptor genes encoding 65 gustatory receptors, including 7 carbon dioxide, 9 sugar, and 49 bitter receptors. This study provides a platform for future functional analysis and comparative chemosensory study. A better understanding of gustation will improve our understanding of this species’ complex chemoreception, which is an important step toward developing more effective control methods.

Preliminary evaluation of acoustic sensors for early detection of red palm weevil, Rhynchophorus ferrugineus incidence on oil palm and coconut in Malaysia

2021 ◽  
Author(s):  
Nur Ain Farhah Ros Saidon Khudri ◽  
Mohamed Mazmira Mohd Masri ◽  
Mohd Shawal Thakib Maidin ◽  
Noorhazwani Kamarudin ◽  
Mohamad Haris Hussain ◽  
...  
Keyword(s):  
Early Detection ◽  
Oil Palm ◽  
Preliminary Evaluation ◽  
Rhynchophorus Ferrugineus ◽  
Acoustic Sensors ◽  
Red Palm Weevil ◽  
Palm Weevil
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