Can increasing infestations by Rhynchophorus ferrugineus threaten endemic Chamaerops humilis in Sardinia (Italy)?

EPPO Bulletin ◽  
2019 ◽  
Vol 49 (2) ◽  
pp. 405-413
Author(s):  
A. Cocco ◽  
M. Pusceddu ◽  
A. Lentini ◽  
I. Floris
Keyword(s):  
Rhynchophorus Ferrugineus ◽  
Chamaerops Humilis

Does catechin make the Mediterranean palm tree Chamaerops humilis L. an unsuitable host for Rhynchophorus ferrugineus?

2021 ◽  
Author(s):  
Fernando Monroy ◽  
Paolo Curir ◽  
Virginia Lanzotti ◽  
Laura Grauso ◽  
Enrico Busato ◽  
...  
Keyword(s):  
Palm Tree ◽  
Rhynchophorus Ferrugineus ◽  
Chamaerops Humilis ◽  
The Mediterranean

Susceptibility and possible resistance mechanisms in the palm species Phoenix dactylifera, Chamaerops humilis and Washingtonia filifera against Rhynchophorus ferrugineus (Olivier, 1790) (Coleoptera: Curculionidae)

2016 ◽  
Vol 106 (3) ◽  
pp. 341-346 ◽  
Author(s):  
B. Cangelosi ◽  
F. Clematis ◽  
P. Curir ◽  
F. Monroy
Keyword(s):  
Defense Mechanisms ◽  
Larval Mortality ◽  
Phoenix Dactylifera ◽  
Larval Survival ◽  
Resistance Mechanisms ◽  
Rhynchophorus Ferrugineus ◽  
Leaf Extracts ◽  
Palm Species ◽  
Chamaerops Humilis ◽  
Washingtonia Filifera

AbstractRhynchophorus ferrugineus, known as the Red Palm Weevil (RPW), is reported as a pest of up to 40 palm species. However, the susceptibility degree and the defense mechanisms of these species against this weevil are still poorly known. In Europe, the RPW is a major pest of Phoenix canariensis while other palm species, including the congeneric Phoenix dactylifera, seem to be less suitable hosts for this insect. The aim of our study was to compare the defensive response of P. dactylifera, Chamaerops humilis and Washingtonia filifera against R. ferrugineus and try to define the mechanisms of resistance that characterize these species. Bioassays were carried out to evaluate the mortality induced on RPW larvae by extracts from the leaf rachis of the studied palm species. Tests at semi-field scale were also conducted, based either on forced palm infestation, with larvae of RPW, or on natural infestation, with adult females. Rachis extracts from C. humilis and W. filifera caused 100% larval mortality after 2 days of exposure, while extracts of P. dactylifera did not impair larval survival. Independently of the effect of the leaf extracts, the weevils were unable to naturally infest the three palm species, although larval survival was high after forced infestation of the plants. We concluded that the observed lack of infestation of P. dactylifera by RPW is due to factors other than antibiosis. In W. filifera and C. humilis, although the presence of antixenosis mechanisms cannot be excluded, resistance to R. ferrugineus seems to rely on the presence of antibiosis compounds.

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
Sign in / Sign up

Export Citation Format

Share Document