2022
Real‐time geographic settling of a hybrid zone between the invasive winter moth (Operophtera brumata L.) and the native Bruce spanworm (O. bruceata Hulst)
Andersen J, Havill N, Boettner G, Chandler J, Caccone A, Elkinton J. Real‐time geographic settling of a hybrid zone between the invasive winter moth (Operophtera brumata L.) and the native Bruce spanworm (O. bruceata Hulst). Molecular Ecology 2022, 31: 6617-6633. PMID: 35034394, DOI: 10.1111/mec.16349.Peer-Reviewed Original ResearchConceptsInvasive winter mothClinal hybrid zoneHybrid zoneWinter mothBruce spanwormNon-native speciesNon-native organismsLow dispersal ratesProbability of establishmentMosaic hybrid zoneCases of hybridizationNative congenerNovel habitatsLong Island SoundEnvironmental variablesO. bruceataDispersal ratesCoastal ConnecticutMicrosatellite dataOperophtera brumataHybrid fitnessWinter cold temperaturesPopulation densityWinter temperaturesEvolutionary trajectories
2021
Four times out of Europe: Serial invasions of the winter moth, Operophtera brumata, to North America
Andersen J, Havill N, Caccone A, Elkinton J. Four times out of Europe: Serial invasions of the winter moth, Operophtera brumata, to North America. Molecular Ecology 2021, 30: 3439-3452. PMID: 34033202, DOI: 10.1111/mec.15983.Peer-Reviewed Original ResearchConceptsWinter mothNortheastern United StatesNorth AmericaInvasive winter mothNon-native speciesPopulation genetic dataAmount of diversityInvasion successSerial invasionInvaded regionsWidespread defoliationGenetic bottleneckBayesian assignmentOperophtera brumataMicrosatellite lociApproximate Bayesian computation methodsIndependent introductionsNorthern FennoscandiaCentral EuropeGenetic dataHybridization eventsBritish ColumbiaGeographic originNova ScotiaAmerica
2019
Complex interplay of evolutionary forces shaping population genomic structure of invasive Aedes albopictus in southern Europe
Pichler V, Kotsakiozi P, Caputo B, Serini P, Caccone A, della Torre A. Complex interplay of evolutionary forces shaping population genomic structure of invasive Aedes albopictus in southern Europe. PLOS Neglected Tropical Diseases 2019, 13: e0007554. PMID: 31437154, PMCID: PMC6705758, DOI: 10.1371/journal.pntd.0007554.Peer-Reviewed Original ResearchConceptsDouble digest Restriction-site Associated DNAHistorical contextMultiple independent invasionsSouth East AsiaRestriction-site Associated DNAPopulation genomic structureInvasive Aedes albopictusInvasion historyWorldwide expansionSouthern EuropeFirst countryHistoryAnimal invasionsItalyEuropeAlbaniaSuccessful historyRecent invasionMigration patternsHuman arbovirusesComplex interplayMultiple geographic locationsIndependent invasionsColonistsInvasive range
2016
Asymmetric hybridization between non-native winter moth, Operophtera brumata (Lepidoptera: Geometridae), and native Bruce spanworm, Operophtera bruceata, in the Northeastern United States, assessed with novel microsatellites and SNPs
Havill N, Elkinton J, Andersen J, Hagen S, Broadley H, Boettner G, Caccone A. Asymmetric hybridization between non-native winter moth, Operophtera brumata (Lepidoptera: Geometridae), and native Bruce spanworm, Operophtera bruceata, in the Northeastern United States, assessed with novel microsatellites and SNPs. Bulletin Of Entomological Research 2016, 107: 241-250. PMID: 27876095, DOI: 10.1017/s0007485316000857.Peer-Reviewed Original ResearchConceptsSingle nucleotide polymorphismsMicrosatellite lociBruce spanwormAsymmetric hybridizationWinter mothSpecies-diagnostic single nucleotide polymorphismsOperophtera brumataVariable microsatellite lociNon-native pestsTypes of markersBacterial symbiontsGenetic incompatibilitiesGenomic approachesLaboratory crossesNative speciesAsymmetrical hybridizationPopulation geneticsPutative hybridsHybrid backcrossesNovel microsatellitesForest treesOperophtera bruceataO. bruceataReciprocal crossesGenetic markersAncient and modern colonization of North America by hemlock woolly adelgid, Adelges tsugae (Hemiptera: Adelgidae), an invasive insect from East Asia
Havill N, Shiyake S, Lamb Galloway A, Foottit R, Yu G, Paradis A, Elkinton J, Montgomery M, Sano M, Caccone A. Ancient and modern colonization of North America by hemlock woolly adelgid, Adelges tsugae (Hemiptera: Adelgidae), an invasive insect from East Asia. Molecular Ecology 2016, 25: 2065-2080. PMID: 26880353, DOI: 10.1111/mec.13589.Peer-Reviewed Original ResearchConceptsWestern North AmericaEastern North AmericaNorth AmericaAdelges tsugaeHost specializationExtreme genetic bottleneckWorldwide genetic structurePleistocene glacial periodsSouthern JapanMitochondrial COI sequencesGlacial periodSpecies traitsAdelgid invasionApproximate Bayesian computationInvasive insectsHemlock speciesContinental scaleInvasion pathwaysTsuga speciesGenetic bottleneckGenetic structureHost treesEndemic lineagesInvasive pestHemlock trees