Red palm weevil, Rhynchophorus ferrugineus, a significant threat to date palm tree, global invasions, consequences, and management techniques

Aziz, Al Thabiani

doi:10.1007/s41348-023-00805-w

Cited by 4 publications

(2 citation statements)

References 82 publications

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“…In Pakistan, it is a serious pest of date palms [5,6]. The weevil has invaded a total of 69 countries over the last 30 years, and the host range has expanded from only 4 species in the mid-1950s to 40 species in 2020 [4,7].…”

Section: Introductionmentioning

confidence: 99%

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Efficacy and Persistence of Entomopathogenic Fungi against Rhynchophorus ferrugineus on Date Palm: Host to Host Transmission

Alwaneen,

Wakil,

Kavallieratos

et al. 2024

Agronomy

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The red palm weevil (RPW), Rhynchophorus ferrugineus (Olivier) (Coleoptera: Dryophthoridae), is a destructive and voracious pest of palm species worldwide. Due to environmental and regulatory concerns, ecologically safe alternatives to synthetic chemical insecticides are needed to manage this cryptic insect species. Entomopathogenic fungi have the potential to manage this pest. The scope of management and effectiveness can be improved by direct control or horizontal transmission of entomopathogenic fungal isolates. We tested in the laboratory the virulence and pathogenicity of fifteen different entomopathogenic fungal isolates belonging to the following species: Beauveria bassiana, Metarhizium anisopliae, Beauveria brongniartii and Purpureocillium lilacinum. All fungal isolates were found virulent against larvae (14.9 ± 1.06 to 81.5 ± 1.48% mortality) and adults (5.6 ± 1.12 to 51.7 ± 1.51% mortality) at 12 d post-treatment. From a screening bioassay, five M. anisopliae (WG-08, WG-09) and B. bassiana (WG-23, WG-24, WG-25) isolates were tested for their concentration response mortality against larvae and adults after 7, 14 and 21 days (d) of treatment. Mortality was found positively correlated with concentration and time. At 21 d of treatment, WG-23 and WG-25 1 × 108 conidia/mL resulted in 100% mortality against larvae while only WG-25 1 × 109 conidia/mL caused 100% mortality of adults. Along with mortality, all the potential isolates have strong ovicidal effects that reduced 81.49% at 1 × 108 conidia/mL. The horizontal transmission bioassay indicated that the infected adults transmitted the disease to healthy individuals. Horizontal transmission of fungi from infected to non-infected adults not only caused significant mortality but also had a serious sublethal impact on insect development and fitness including reduced number of eggs/d fecundity, egg viability and neonate survival. Isolate WG-25 reduced oviposition (0.5 eggs/d), fecundity (11.7 eggs/female), egg viability (11.6%) along with larval survival 25.9% when infected male mated with normal female. In semi-field trials, all fungal isolates reduced survival of larvae found inside the palms and ultimately reduced infestations over a period of two months. The results of this study indicate that entomopathogenic fungi should be further tested for sustainable and efficient control of RPW in date palm production systems.

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Section: Introductionmentioning

confidence: 99%

“…The concerns of farmers regarding economic and environmental issues of RPW are genuine and considerable. It severely affects the produce, as well as exerting negative impact on cultural and aesthetic values of palm trees [6,13].…”

Section: Introductionmentioning

confidence: 99%

Efficacy and Persistence of Entomopathogenic Fungi against Rhynchophorus ferrugineus on Date Palm: Host to Host Transmission

Alwaneen,

Wakil,

Kavallieratos

et al. 2024

Agronomy

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Sublethal effect of emamectin benzoate on age-stage, two-sex life table and population projection of red palm weevil, Rhynchophorus ferrugineus

Rezk,

Naqqash,

Sattar

et al. 2024

Sci Rep

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The red palm weevil (RPW), Rhynchophorus ferrugineus Olivier, is a devastating insect-pest of 29 plants including date palm. It feeds inside the tree bark thus it is difficult to manage using insecticides. Only a few insecticides have been found effective against RPW. Among these insecticide, emamectin benzoate (EMB) is widely used. This insecticide can pose threat human and environmental health as it is used in the form of tree injection. Thus, keeping in view its possible, its sublethal effect on RPW was studied using Age-stage, two sex life table. Life table parameters of the progeny of exposed larvae to LC 10 , LC 25, and LC 50 of EMB were computed. Statistically higher fecundity (161.12 per female) was observed in control treatment, while less fecundity was observed in LC 50 treatment. Significantly higher values for intrinsic rate of increase ( r ), finite rate of increase ( λ ), and net reproductive rate ( R o ) (0.0376, 1.0383, and 67.13 per day, respectively) were recorded for the control treatment. Contrarily, lower values for r , R o , and λ i.e. 0.0318, 23.82, and 1.0324 per day, respectively were recorded in the LC 50 treatment. Decreased population parameters suggest that EMB can be successfully used in for the management of RPW.

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Current Status of Biology–Biotechnic, Agronomic, and Biological Control of Rhynchophorus ferrugineus: A Review

Wakil,

Boukouvala,

Kavallieratos

et al. 2024

Insects

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Rhynchophorus ferrugineus (Olivier) (Coleoptera: Curculionidae), the red palm weevil (RPW), is a concealed voracious pest of different ornamental and economically important palm species, particularly the date palm. It can cause huge losses in ornamental and commercial palm plantations. RPW has spread rapidly from its original distribution in Southeast Asia to date palm-growing countries worldwide. It is now established in more than 50% of date palm-growing countries and 15% of the coconut-growing countries globally. To prevent further expansion of this pest, many countries have implemented strict legislative and quarantine measures surrounding the export of the palms plant genetic resources from RPW-infested countries. This review focuses on the general biology (life history, development), host range, geographical distribution, and management on the basis of biotechnic methods, farming practices, natural enemies, and important microbial control agents.

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Red palm weevil, Rhynchophorus ferrugineus, a significant threat to date palm tree, global invasions, consequences, and management techniques

Cited by 4 publications

References 82 publications

Efficacy and Persistence of Entomopathogenic Fungi against Rhynchophorus ferrugineus on Date Palm: Host to Host Transmission

Efficacy and Persistence of Entomopathogenic Fungi against Rhynchophorus ferrugineus on Date Palm: Host to Host Transmission

Sublethal effect of emamectin benzoate on age-stage, two-sex life table and population projection of red palm weevil, Rhynchophorus ferrugineus

Current Status of Biology–Biotechnic, Agronomic, and Biological Control of Rhynchophorus ferrugineus: A Review

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