Aggregation Pheromones of Weevils (Coleoptera: Curculionidae): Advances in the Identification and Potential Uses in Semiochemical-Based Pest Management Strategies

Bandeira, Pamela T.; Fávaro, Carla F.; Francke, Wittko; Bergmann, Jan; Zarbin, Paulo H. G.

doi:10.1007/s10886-021-01319-1

Cited by 10 publications

(7 citation statements)

References 193 publications

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“…Specifically, only thirteen ORs from six different coleopteran insects have been functionally characterized (see Supplementary, Table S12). Palm weevils belong to Curculionidae, the largest family of beetles, with more than 80,000 species that primarily rely on chemical communication 43 . Palm weevils, Rhynchophorus spp., are attracted explicitly to wounded, stressed, or fermented palms, particularly around tunnel openings and other damaged areas 2,44,45 .…”

Section: Discussionmentioning

confidence: 99%

Reverse chemical ecology approach for sustainable palm tree protection against invasive palm weevils

Antony

Montagné

Comte

et al. 2023

Preprint

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The reverse chemical ecology approach facilitates sustainable plant protection by identifying odorant receptors (ORs) tuned to odorants, especially the volatile molecules emitted from host plants that insects use for detection. A few studies have explored such an approach to develop sustainable pest management programs, especially in host-specialized insect species. We revealed the molecular mechanism of host plant detection of a destructive, invasive insect pest of palm trees (Arecaceae), the Asian palm weevil (Rhynchophorus ferrugineus), by deorphanizing an OR (RferOR2) tuned to several palm-emitted odors. We found that RferOR2 responded explicitly to several ecologically relevant palm-emitted odors and significantly to palm esters when transgenically expressed in Drosophila olfactory neurons. We mapped RferOR2 expression in the R. ferrugineus genome and found that odor specificity is likely to develop equally in both sexes. We inferred that the semiochemicals that attract palm weevils to a palm tree might aid in weevil control efforts by improving attraction, enticing many palm weevils to the traps. We demonstrate that including synthetic palm volatiles in pheromone-based mass trapping has a synergistic effect on pheromones, resulting in significantly increased weevil catches. We proved that insect OR deorphanization could aid in the identification of novel behaviorally active volatiles for inclusion in pest management. These results suggest that targeting RferOR2 may help design receptor antagonists that can interfere with weevil host-searching behavior in sustainable pest management applications.

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Section: Discussionmentioning

confidence: 99%

Reverse chemical ecology approach for sustainable palm tree protection against invasive palm weevils

Antony

Montagné

Comte

et al. 2023

Preprint

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“…Multiple weevil pheromones have been identified as mediators of individual insect communication, such as Rhinostomus barbirostris Fabricius [ 45 ] and Metamasius spinolae Gyllenhal [ 46 ]. The potential use of semi-chemical methods can play an active and effective role in pest management and can be considered a control strategy [ 47 ].…”

Section: Discussionmentioning

confidence: 99%

The Influencing Factors of Aggregation Behavior of Tree-of-Heaven Trunk Weevil, Eucryptorrhynchus brandti (Harold) (Coleoptera: Curculionidae)

Sun

Song

Guo

et al. 2023

Insects

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The tree-of-heaven trunk weevil, Eucryptorrhynchus brandti (Harold) (Coleoptera: Curculionidae), is one of the most harmful pests that damage the tree of heaven, Ailanthus altissima Swingle (Sapindales: Simaroubaceae). Aggregation behavior tests of E. brandti adults were conducted in laboratory conditions. The effects of temperature and light on the aggregation behavior of adults were tested, and the effect of sex and host was conducted with binomial choice experiments. The results showed that (1) the adults aggregate in both light and dark environments but preferred the dark environment, (2) temperature can drive the aggregation of E. brandti adults, (3) host plants could trigger E. brandti adults’ aggregation behavior, which is probably related to phytochemicals and insect feeding and localization, (4) there was mutual attraction of males and females and chemical attraction of crude intestinal extracts of males and females, and (5) aggregation behavior of E. brandti adults may also be related to the mediating of physical signals in insects. In this study, aggregation behavior can help us understand conspecific interactions and discover some strategies for effective control.

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“…Regarding insect catch, we found that R. palmarum was more abundant than D. borassi throughout the monitoring campaign. Several factors can explain the phenomenon: First, the pheromone attractiveness may differ between species, even though the chemical ecology of both species appears to have significant similarities (Bandeira et al, 2021; Rochat et al, 2000). Second, R. palmarum is considered more generalist as it has been recorded in dozens of host plants (CABI, 2020; Hoddle, Johansen, et al, 2021), while D. borassi has more restricted feeding habits (Cuellar‐Palacios et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Spatiotemporal dynamics of a palm weevils' outbreak and susceptibility of peach palm (Bactris gasipaes Kunth) landraces in a germplasm bank in southwestern Colombia

Gutiérrez,

Santos‐Holguín,

Moncayo

et al. 2023

Annals of Applied Biology

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The palm weevils Rhynchophorus palmarum and Dynamis borassi are prominent pest species in peach palms and coconut in Colombia. Nevertheless, knowledge of the population dynamics of these weevil species in the neotropical region is still scarce. In this study, we systematically sampled these weevils over 2 years using pheromone traps (1 trap ha−1) in an experimental peach palm plantation under heavy weevil infestation in southwestern Colombia. Additionally, we censused the palms in a portion of the plantation (a peach palm germplasm bank) before and after the weevil monitoring. We analysed the data to elucidate sex‐specific temporal and spatial patterns of both R. palmarum and D. borassi in a 19.13 ha area. Furthermore, we sought to detect peach palm landraces within the germplasm bank susceptible and resistant/tolerant to the weevil attack. During periods when insect populations were high, we observed that R. palmarum consistently outnumbered D. borassi. Specifically, we found that R. palmarum reached up to 80 insects trap−1 month−1, while D. borassi only reached around 30 insects trap−1 month−1 during the peak months. However, both species exhibited synchronous population peaks, which were not related to rainfall or temperature but rather to the phenological stage of the peach palm. Furthermore, the weevils had a highly aggregated spatial pattern; insect catchments were more prolific in areas where the landraces Nariño and Risaralda were sown. Moreover, the census evidenced that these two landraces were the most affected. Contrarily, weevil capture was overall low around the Guaviare landrace, this was the only landrace that exhibited an increase in stipes between census years. Our results highlight that complementary control strategies are needed to counteract sudden weevil population outbreaks, as pheromone traps are a good tool for monitoring but not for effective control. Furthermore, more importantly, a peach palm breeding programme based on the identified genotypes should be the basis for the integrated pest management of palm weevils.

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Aggregation Pheromones of Weevils (Coleoptera: Curculionidae): Advances in the Identification and Potential Uses in Semiochemical-Based Pest Management Strategies

Cited by 10 publications

References 193 publications

Reverse chemical ecology approach for sustainable palm tree protection against invasive palm weevils

Reverse chemical ecology approach for sustainable palm tree protection against invasive palm weevils

The Influencing Factors of Aggregation Behavior of Tree-of-Heaven Trunk Weevil, Eucryptorrhynchus brandti (Harold) (Coleoptera: Curculionidae)

Spatiotemporal dynamics of a palm weevils' outbreak and susceptibility of peach palm (Bactris gasipaes Kunth) landraces in a germplasm bank in southwestern Colombia

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