闽台重要外来昆虫入侵机制、生态互作与绿色防控研究:20年进展与展望OA

[Background]Alien insect invasion is a major factor threatening the ecological security of agricultural and forestry sys-tems,whose success is a result of integrated effects of propagule pressure,host adaptation,reproductive strategies,symbiotic micro-organisms,chemical communication and natural-enemy interactions.Fujian and Taiwan,characterized by suitable climatic condi-tions and frequent trade activities,represent high-risk regions for the introduction and spread of alien invasive insects.Drawing on two decades of systematic research on 5 representative invasive insect species,namely Rhynchophorus ferrugineus,Octodonta nipae,Spodoptera frugiperda,Tuta absoluta and Solenopsis invicta,this review summarizes recent progress in invasion mechanisms,ecolog-ical interactions and green control strategies.[Progress]Research has progressively shifted from descriptive surveys of incidence and damage toward mechanistic investigation and development of sustainable management strategies.For palm-associated invasive pests(R.ferrugineus and O.nipae),studies have highlighted the functional roles of gut microbiota and endosymbionts in nutrient acquisi-tion and immune homeostasis,and also clarified the interplay of thermal adaptation,host suitability and reproductive strategies in shaping colonization success.In addition,parasitoid venom-mediated multi-target immunosuppression and host-driven evolutionary dynamics have been characterized,providing insights into host-parasitoid coevolutionary interactions.For agricultural pests like S.frugiperda and T.absoluta,the synergistic modulation of plant defenses by salivary proteins and gut microbiota has been resolved at the molecular level,along with the systemic developmental disruption mediated by parasitoid polydnaviruses(PDVs).For the so-cial insect S.invicta,studies have focused on chemical communication systems,foraging regulation and identification of behavioral interference targets.In terms of green control,recent advances include the enhancement of natural enemy performance through nectar plant provisioning,identification of synergistic attractants,characterization of key olfactory targets for behavioral manipulation,and development of behavior-based delivery strategies for entomopathogenic nematodes,collectively forming an integrated framework for ecological pest suppression.[Prospect]Future research should further advance multi-omics integration,functional validation of key genes,targeted microbiome manipulation,standardized evaluation of natural enemy resources,and climate-change risk assessment.In parallel,joint prevention and control across Fujian and Taiwan should be reinforced to shift pest management from reactive re-sponses toward proactive interception.These endeavors will facilitate the development of an integrated framework linking invasion mechanism research with practical green control applications,providing theoretical support and technical guidance for the long-term sustainable management of major invasive insect pests.