123 results on '"Havill, Nathan P."'
Search Results
102. Diversity of proteobacterial endosymbionts in hemlock woolly adelgid ( Adelges tsugae) ( Hemiptera: Adelgidae) from its native and introduced range.
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Dohlen, Carol D., Spaulding, Usha, Shields, Kathleen, Havill, Nathan P., Rosa, Cristina, and Hoover, Kelli
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HEMLOCK woolly adelgid ,PROTEOBACTERIA ,ENDOSYMBIOSIS ,INSECT microbiology ,MICROBIAL variation ,BACTERIAL genetics ,INSECT populations ,BACTERIAL typing - Abstract
Knowledge of intraspecific variation in symbioses may aid in understanding the ecology of widespread insects in different parts of their range. We investigated bacterial symbionts of Adelges tsugae, a pest of hemlocks in eastern North America introduced from Asia. Amplification, cloning, and sequencing of bacterial 16 S rDNA, in situ hybridizations, and electron microscopy revealed that A. tsugae harbours up to five bacterial phylotypes, according to population. Three Gammaproteobacteria species are maternally transmitted. The first, designated ' Ca. Pseudomonas adelgestsugas' resides in the haemocoel, and was detected in all populations except Taiwan. The second phylotype, ' Ca. Serratia symbiotica', resides in bacteriocytes of populations on Tsuga sieboldii in Japan and in E. North America. The third phylotype, designated ' Ca. Annandia adelgestsuga', clustered within a lineage of several insect endosymbionts that included Buchnera aphidicola. It was detected in bacteriocytes in all populations, and in salivary glands of first instars. Two Betaproteobacteria phylotypes were detected in some Japanese T. sieboldii and eastern North America populations, and were observed only in salivary glands with no evidence of maternal transmission. Our results support the ideas that symbiont gain and loss has been volatile in adelgids, and that symbionts may help to trace the source of invasive species. [ABSTRACT FROM AUTHOR]
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- 2013
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103. Biology and Evolution of Adelgidae.
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Havill, Nathan P. and Foottit, Robert G.
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ADELGIDAE , *HEMIPTERA , *INSECT pests , *FOREST ecology , *INSECT behavior , *INSECT-plant relationships , *HOST plants , *LIFE cycles (Biology) - Abstract
The Adelgidae form a small clade of insects within the Aphidoidea (Hemiptera) that includes some of the most destructive introduced pest species threatening North American forest ecosystems. Despite their importance, little is known about their evolutionary history and their taxonomy remains unresolved. Adelgids are cyclically parthenogenetic and exhibit multigeneration complex life cycles. They can be holocyclic, with a sexual generation and host alternation, or anholocyclic, entirely asexual and without host alternation. We discuss adelgid behavior and ecology, emphasizing plant-insect interactions, and we explore ways that the biogeographic history of their host plants may have affected adelgid phylogeny and evolution of adelgid life cycles. Finally, we highlight several areas in which additional research into speciation, population genetics, multitrophic interactions, and life-history evolution would improve our understanding of adelgid biology and evolution. [ABSTRACT FROM AUTHOR]
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- 2007
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104. Forest Policy / Biosecurity
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Heath, Linda, Row, Clark, Perschel, Robert, Boucher, Douglas, Elias, Patricia, Lininger, Katherine, May-Tobin, Calen, Saxon, Earl, Ruddell, Steven, Collins, Sally, Ruddell, Sarah, Zhou, Mo, Pelkki, Matthew, Galik, Christopher, Abt, Robert, Milanes-Murcia, Maria, Eng, Helge, Cantler, Sandy, Malovrh, Špela Pezdevšek, Avdibegovic, Mersudin, Hodges, Donald, Butler, Brett, Catanzaro, Paul, Greene, John, Hewes, Jaketon, Kilgore, Michael, Kittredge, David, Ma, Zhao, Tyrrell, Mary, Barnwell, John, Delaney, Kelsey, Cleaves, David, Cleaves, David, Yoffe, Shira, Swanston, Chris, Janowiak, Maria, Dunkelberger, Bill, Robards, Timothy, Saah, David, O'Laughlin, Jay, Lippke, Bruce, Oneil, Elaine, Allred, Shorna, Dayer, Ashley, Stedman, Richard, Song, Nianfu, Aguilar, Francisco, Shifley, Stephen, Goerndt, Michael, Malmsheimer, Robert, Bowyer, James, Fried, Jeremy, Gee, Edmund, Izlar, Bob, Miner, Reid, Munn, Ian, Oneil, Elaine, Stewart, William, Delaney, Kelsey, Malmsheimer, Robert, Bowyer, James, Fried, Jeremy, Gee, Edmund, Izlar, Bob, Miner, Reid, Munn, Ian, Oneil, Elaine, Stewart, William, Delaney, Kelsey, Schultz, Courtney, Jedd, Theresa, Havill, Nathan, Onken, Bradley, Gottschalk, Kurt, Cannon, Philip, Hauff, Robert, Hughes, Flint, Togia, Tavita, Moore, Aubrey, Quitugua, Roland, McCullough, Deborah, Poland, Therese, Schneeberger, Noel, Progar, Robert, Valle, Janet, Markin, George, Milan, Joe, Barbouletos, Tom, Rinella, Matt, Soper, Anna, Kruse, James, Enloe, Stephen, Pecot, Stephen, Hauff, Robert, Mann, Sheri S., Moore, Aubrey, Quitugua, Roland, Vanderwoude, Cas, Tyrrell, Mary, Paul, Gillian, Ward, Jeffrey, Cousins, Stella, Comins, Partick, Gupta, Angela, Abrahamson, Mark, Cervenka, Val, Hahn, Jeff, Herzfeld, Dean, Holman, Ken, Johnson, Gary, Wyatt, Gary, Mayer, Amy, Buck, Michael, Neville, Rachel, Fujikawa, Jean, King, Cynthia, Hauff, Robert, Kaufman, Leyla, Wright, Mark, Kaufman, Leyla, Yalemar, Juliana, Wright, Mark, Heissenbuttel, John, Parks, Catherine, Nikolov, Ned, Zeller, Karl, Heissenbuttel, John, Heissenbuttel, John, Heissenbuttel, John, Fried, Jeremy, Jain, Theresa, Sandquist, Jonathan, Potts, Larry, Seybold, Steven, Coleman, Tom, Werner, Ken, Richardson, Brian, Ferreira, Francisco, Matusick, George, Ruthrof, Katinka, and Hardy, Giles
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7Massive fires in Indonesian peatlands in the 1990s and in eastern Russian peatlands in 2002 and last year have highlighted the need to manage forests overlying peat deposits, as well as converted peat forests and open peatlands. Peat or peaty soils, contain 65% or more of partially decayed vegetation, can burn freely or underground. They cover some 10 percent of worldwide forests and contain 25 percent of all terrestrial carbon. Recent massive greenhouse gas (GHG) emissions from fires in forested peat and peatland in Indonesia and in Russia highlight the need for policies to reduce GHG emissions. We discuss major peatland areas and quantify their carbon stocks and potential GHG emissions. Trends show that year-to-year emissions are variable, with huge pulses that are a significant share of global GHG emissions. We group suggested policy options into three approaches. The first approach, which will reduce peat-related product demand, includes a) restricting peat, and products produced on cleared forested peatland, from being labeled or counted in GHG reduction achievements, as renewable (which palm oil currently is considered); b) developing full substitutes for horticultural peat (comprising about half mined peat use); and c) developing renewable power in countries still dependent on peat for power generation. These options reduce the rate of developing newly mined peat/forest areas. Options for a second approach, which treat already drained and cleared forested peatlands, are: d) restoring functioning peat ecosystems by closing drainage ditches, allowing natural rewetting, and “seeding” with peat vegetation fragments, e) requiring current peat operators to restore mined areas right after all peat is removed, and f) converting them to other land uses, despite the acidic conditions of mined peat bogs. These options sharply reduce risks of peat fires. Finally, a third group of policy options reduces ignition risks and limit fire spread: g) developing monitoring, suppression techniques, h) organizing local landowner protection groups and i) improving public fire organizations.
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- 2011
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105. Notes on balsam woolly adelgid, Adelges piceae (Ratzeburg, 1844) (Hemiptera: Adelgidae), range expansion in Idaho, Montana and Utah
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Davis, Gina, Lowrey, Laura, Eckberg, Tom, Gannon, Amy, Malesky, Danielle, and Havill, Nathan
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- 2020
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106. Weak spatial-genetic structure in a native invasive, the southern pine beetle (Dendroctonus frontalis), across the eastern United States
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Garrick, Ryan C., Arantes, Ísis C., Stubbs, Megan B., Havill, Nathan P., Garrick, Ryan C., Arantes, Ísis C., Stubbs, Megan B., and Havill, Nathan P.
107. Weak spatial-genetic structure in a native invasive, the southern pine beetle (Dendroctonus frontalis), across the eastern United States
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Garrick, Ryan C., Arantes, Ísis C., Stubbs, Megan B., Havill, Nathan P., Garrick, Ryan C., Arantes, Ísis C., Stubbs, Megan B., and Havill, Nathan P.
108. Weak spatial-genetic structure in a native invasive, the southern pine beetle (Dendroctonus frontalis), across the eastern United States
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Garrick, Ryan C., Arantes, Ísis C., Stubbs, Megan B., Havill, Nathan P., Garrick, Ryan C., Arantes, Ísis C., Stubbs, Megan B., and Havill, Nathan P.
109. Weak spatial-genetic structure in a native invasive, the southern pine beetle (Dendroctonus frontalis), across the eastern United States
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Garrick, Ryan C., Arantes, Ísis C., Stubbs, Megan B., Havill, Nathan P., Garrick, Ryan C., Arantes, Ísis C., Stubbs, Megan B., and Havill, Nathan P.
110. Microsatellite genotypes for southern pine beetles, Dendroctonus frontalis, from the U.S. and Mexico
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Havill, Nathan P., primary
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111. First report of Pineus strobi (Hartig, 1839) (Hemiptera: Adelgidae) in western North America
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Darr, Molly, Salom, Scott, Brooks, Rachel K., Foottit, Robert G., Miller, Gary L., and Havill, Nathan P.
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- 2018
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112. Whole-genome sequence of the Cooley spruce gall adelgid, Adelges cooleyi (Hemiptera: Sternorrhyncha: Adelgidae).
- Author
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Dial, Dustin T, Weglarz, Kathryn M, Brunet, Bryan M T, Havill, Nathan P, Dohlen, Carol D von, and Burke, Gaelen R
- Subjects
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WHOLE genome sequencing , *HEMIPTERA , *MITOCHONDRIAL DNA , *GENOMICS , *PHYLLOXERIDAE , *GENOMES - Abstract
The adelgids (Adelgidae) are a small family of sap-feeding insects, which, together with true aphids (Aphididae) and phylloxerans (Phylloxeridae), make up the infraorder Aphidomorpha. Some adelgid species are highly destructive to forest ecosystems such as Adelges tsugae , Adelges piceae , Adelges laricis , Pineus pini , and Pineus boerneri. Despite this, there are no high-quality genomic resources for adelgids, hindering advanced genomic analyses within Adelgidae and among Aphidomorpha. Here, we used PacBio continuous long-read and Illumina RNA-sequencing to construct a high-quality draft genome assembly for the Cooley spruce gall adelgid, Adelges cooleyi (Gillette), a gall-forming species endemic to North America. The assembled genome is 270.2 Mb in total size and has scaffold and contig N50 statistics of 14.87 and 7.18 Mb, respectively. There are 24,967 predicted coding sequences, and the assembly completeness is estimated at 98.1 and 99.6% with core BUSCO gene sets of Arthropoda and Hemiptera, respectively. Phylogenomic analysis using the A. cooleyi genome, 3 publicly available adelgid transcriptomes, 4 phylloxera transcriptomes, the Daktulosphaira vitifoliae (grape phylloxera) genome, 4 aphid genomes, and 2 outgroup coccoid genomes fully resolves adelgids and phylloxerans as sister taxa. The mitochondrial genome is 24 kb, among the largest in insects sampled to date, with 39.4% composed of noncoding regions. This genome assembly is currently the only genome-scale, annotated assembly for adelgids and will be a valuable resource for understanding the ecology and evolution of Aphidomorpha. [ABSTRACT FROM AUTHOR]
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- 2024
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113. A New Species and Introgression in Eastern Asian Hemlocks (Pinaceae: Tsuga)
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Holman, Garth, Tredici, Peter Del, Havill, Nathan, Lee, Nam Sook, Cronn, Richard, Cushman, Kevin, Mathews, Sarah, Raubeson, Linda, and Campbell, Christopher S.
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- 2017
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114. Comparison of Numerical Response and Predation Effects of Two Coccinellid Species on Hemlock Woolly Adelgid (Homoptera: Adelgidae)
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Butin, Elizabeth, Elkinton, Joseph, Havill, Nathan, and Montgomery, Michael
- Published
- 2003
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115. First report of Adelges abietis (Linneaus) (Hemiptera: Adelgidae) in Idaho
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Cook, Merickel, Stephen P., Frank, Cook, Ward, Karen, and Havill, Nathan
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- 2012
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116. Evaluation of hybridization among three Laricobius species, predators of hemlock woolly adelgid, (Adelgidae)
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Fischer, Melissa J., Entomology, Kok, Loke T., Salom, Scott M., Brewster, Carlyle C., Opell, Brent D., and Havill, Nathan P.
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Laricobius osakensis ,hemlock woolly adelgid ,Laricobius naganoensis ,biological control ,Laricobius nigrinus ,pine bark adelgid ,Laricobius rubidus ,hybridization - Abstract
Hybridization was evaluated among three Laricobius spp. involved in the biological control of hemlock woolly adelgid (Adelges tsugae Annand). Following lab mating studies, there was no evidence that Laricobius osakensis Montgomery and Yu could produce hybrid progeny with either Laricobius nigrinus Fender or Laricobius rubidus LeConte. Interaction between L. osakensis and L. nigrinus did not result in a lower production of progeny as a result of fitness costs associated with interspecific mating attempts. Laricobius nigrinus and L. rubidus hybrids were produced in the lab and collected in the field. Hybrid progeny showed very little evidence of decreased fitness. For example, there was no significant difference in the number of days it took for hybrids and pure parental species to develop from egg hatch to the prepupal stage, there was no difference among hybrids and pure parental species in the head capsule widths and larval lengths for the first through third instar, and there was evidence of an F2 generation from field collected specimens. Hybrids produced in the lab had intermediate shaped genital paramere angles compared with parental species, and had elytra coloration similar to that of L. rubidus. Hybrids showed no host preference in the lab, but a preference for Adelges tsugae in the field. Of 12 site factors examined, only the number of years that L. nigrinus was present at the site was found to be associated with percent hybrids. Contamination of the L. osakensis colony with Laricobius naganoensis Leschen resulted in the need to develop molecular methods to differentiate L. osakensis from L. naganoensis. Three restriction enzymes were found that correctly differentiated the two species. Ph. D.
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- 2013
117. Genetics of flight in spongy moths (Lymantria dispar ssp.): functionally integrated profiling of a complex invasive trait.
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Blackburn GS, Keeling CI, Prunier J, Keena MA, Béliveau C, Hamelin R, Havill NP, Hebert FO, Levesque RC, Cusson M, and Porth I
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- Animals, Female, Genome-Wide Association Study, Phenotype, Transcriptome, Flighted Spongy Moth Complex, Moths genetics, Moths physiology, Flight, Animal, Introduced Species
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Background: Flight can drastically enhance dispersal capacity and is a key trait defining the potential of exotic insect species to spread and invade new habitats. The phytophagous European spongy moths (ESM, Lymantria dispar dispar) and Asian spongy moths (ASM; a multi-species group represented here by L. d. asiatica and L. d. japonica), are globally invasive species that vary in adult female flight capability-female ASM are typically flight capable, whereas female ESM are typically flightless. Genetic markers of flight capability would supply a powerful tool for flight profiling of these species at any intercepted life stage. To assess the functional complexity of spongy moth flight and to identify potential markers of flight capability, we used multiple genetic approaches aimed at capturing complementary signals of putative flight-relevant genetic divergence between ESM and ASM: reduced representation genome-wide association studies, whole genome sequence comparisons, and developmental transcriptomics. We then judged the candidacy of flight-associated genes through functional analyses aimed at addressing the proximate demands of flight and salient features of the ecological context of spongy moth flight evolution., Results: Candidate gene sets were typically non-overlapping across different genetic approaches, with only nine gene annotations shared between any pair of approaches. We detected an array of flight-relevant functional themes across gene sets that collectively suggest divergence in flight capability between European and Asian spongy moth lineages has coincided with evolutionary differentiation in multiple aspects of flight development, execution, and surrounding life history. Overall, our results indicate that spongy moth flight evolution has shaped or been influenced by a large and functionally broad network of traits., Conclusions: Our study identified a suite of flight-associated genes in spongy moths suited to exploration of the genetic architecture and evolution of flight, or validation for flight profiling purposes. This work illustrates how complementary genetic approaches combined with phenotypically targeted functional analyses can help to characterize genetically complex traits., (© 2024. His Majesty the King in Right of Canada as represented by the Minister of Natural Resources and Julien Prunier, Richard Hamelin, Francois Oliver Hebert, Roger C. Levesque, Ilga Porth. Parts of this work were authored by US Federal Government authors and are not under copyright protection in the US; foreign copyright protection may apply.)
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- 2024
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118. Whole-genome sequence of the Cooley spruce gall adelgid, Adelges cooleyi (Hemiptera: Sternorrhyncha: Adelgidae).
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Dial DT, Weglarz KM, Brunet BMT, Havill NP, von Dohlen CD, and Burke GR
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- Animals, Ecosystem, Ecology, North America, Hemiptera genetics, Aphids genetics
- Abstract
The adelgids (Adelgidae) are a small family of sap-feeding insects, which, together with true aphids (Aphididae) and phylloxerans (Phylloxeridae), make up the infraorder Aphidomorpha. Some adelgid species are highly destructive to forest ecosystems such as Adelges tsugae, Adelges piceae, Adelges laricis, Pineus pini, and Pineus boerneri. Despite this, there are no high-quality genomic resources for adelgids, hindering advanced genomic analyses within Adelgidae and among Aphidomorpha. Here, we used PacBio continuous long-read and Illumina RNA-sequencing to construct a high-quality draft genome assembly for the Cooley spruce gall adelgid, Adelges cooleyi (Gillette), a gall-forming species endemic to North America. The assembled genome is 270.2 Mb in total size and has scaffold and contig N50 statistics of 14.87 and 7.18 Mb, respectively. There are 24,967 predicted coding sequences, and the assembly completeness is estimated at 98.1 and 99.6% with core BUSCO gene sets of Arthropoda and Hemiptera, respectively. Phylogenomic analysis using the A. cooleyi genome, 3 publicly available adelgid transcriptomes, 4 phylloxera transcriptomes, the Daktulosphaira vitifoliae (grape phylloxera) genome, 4 aphid genomes, and 2 outgroup coccoid genomes fully resolves adelgids and phylloxerans as sister taxa. The mitochondrial genome is 24 kb, among the largest in insects sampled to date, with 39.4% composed of noncoding regions. This genome assembly is currently the only genome-scale, annotated assembly for adelgids and will be a valuable resource for understanding the ecology and evolution of Aphidomorpha., Competing Interests: Conflicts of interest The author(s) declare no conflict of interest., (© The Author(s) 2023. Published by Oxford University Press on behalf of The Genetics Society of America.)
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- 2023
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119. Discovery of the primary aphid (Hemiptera: Aphidomorpha) and scale insect (Hemiptera: Coccomorpha) type specimens from the collection of Theodor Hartig (18051880).
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Brunet BMT, Raupach MJ, Rehage HO, Havill NP, and Foottit RG
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- Animals, Aphids, Hemiptera
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Theodor Hartigs aphid and scale insect type specimens have been presumed lost or destroyed for the last 140 years. Here we document their discovery at the Bavarian State Collection of Zoology (Zoologische Staatssammlung Mnchen, ZSM), in Munich, Germany. These specimens include primary types for 24 aphid, three adelgid, and two armored scale insect species named by Hartig between 1834 and 1851, as well as other specimens of unknown importance.
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- 2023
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120. Transitional genomes and nutritional role reversals identified for dual symbionts of adelgids (Aphidoidea: Adelgidae).
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Dial DT, Weglarz KM, Aremu AO, Havill NP, Pearson TA, Burke GR, and von Dohlen CD
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- Animals, Genome, Bacterial, Insecta, Phylogeny, Hemiptera microbiology, Symbiosis genetics
- Abstract
Many plant-sap-feeding insects have maintained a single, obligate, nutritional symbiont over the long history of their lineage. This senior symbiont may be joined by one or more junior symbionts that compensate for gaps in function incurred through genome-degradative forces. Adelgids are sap-sucking insects that feed solely on conifer trees and follow complex life cycles in which the diet fluctuates in nutrient levels. Adelgids are unusual in that both senior and junior symbionts appear to have been replaced repeatedly over their evolutionary history. Genomes can provide clues to understanding symbiont replacements, but only the dual symbionts of hemlock adelgids have been examined thus far. Here, we sequence and compare genomes of four additional dual-symbiont pairs in adelgids. We show that these symbionts are nutritional partners originating from diverse bacterial lineages and exhibiting wide variation in general genome characteristics. Although dual symbionts cooperate to produce nutrients, the balance of contributions varies widely across pairs, and total genome contents reflect a range of ages and degrees of degradation. Most symbionts appear to be in transitional states of genome reduction. Our findings support a hypothesis of periodic symbiont turnover driven by fluctuating selection for nutritional provisioning related to gains and losses of complex life cycles in their hosts., (© 2021. The Author(s).)
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- 2022
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121. Coexistence of three specialist predators of the hemlock woolly adelgid in the Pacific Northwest USA.
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Rose A, Ross DW, Havill NP, Motley K, and Wallin KF
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- Animals, Coleoptera growth & development, DNA Barcoding, Taxonomic, Diptera genetics, Diptera growth & development, Hemiptera growth & development, Introduced Species, Larva, Life Cycle Stages, Oregon, Tsuga parasitology, Washington, Coleoptera physiology, Diptera physiology, Hemiptera physiology, Pest Control, Biological, Predatory Behavior
- Abstract
The hemlock woolly adelgid (Hemiptera: Adelgidae: Adelges tsugae Annand) is an invasive insect, introduced from Japan to eastern North America, where it causes decline and death of hemlock trees. There is a closely related lineage of A. tsugae native to western North America. To inform classical biological control of A. tsugae in the eastern USA, the density and phenology of three native western adelgid specialist predators, Leucopis argenticollis (Zetterstedt), Le. piniperda (Malloch) (Diptera: Chamaemyiidae), and Laricobius nigrinus Fender (Coleoptera: Derodontidae), were quantified in the Pacific Northwest. Infested branches were collected from western hemlock (Pinaceae: Tsuga heterophylla (Raf.) Sarg.) at four sites around the Puget Sound, Washington and three sites in Oregon. Immature Leucopis were identified to species using DNA barcodes. Leucopis argenticollis was roughly twice as abundant as Le. piniperda. Laricobius nigrinus larvae were more abundant than the two species of Leucopis during the egg stage of the first adelgid generation, but Leucopis were present as feeding larvae during the second adelgid generation when La. nigrinus was aestivating in the soil, resulting in Leucopis being more abundant than La. nigrinus across the entire sampling period. Adelges tsugae and La. nigrinus densities were not correlated, while A. tsugae and Leucopis spp. densities were positively correlated. Leucopis spp. and La. nigrinus densities were negatively correlated. These results support the complementary use of La. nigrinus and the two Leucopis species for biological control of A. tsugae in the eastern USA, and point to the need for further investigation of spatial and temporal niche partitioning among the three predator species.
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- 2020
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122. Ancient and modern colonization of North America by hemlock woolly adelgid, Adelges tsugae (Hemiptera: Adelgidae), an invasive insect from East Asia.
- Author
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Havill NP, Shiyake S, Lamb Galloway A, Foottit RG, Yu G, Paradis A, Elkinton J, Montgomery ME, Sano M, and Caccone A
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- Animals, Bayes Theorem, DNA, Mitochondrial genetics, Asia, Eastern, Genotype, Herbivory, Microsatellite Repeats, North America, Sequence Analysis, DNA, Genetics, Population, Hemiptera genetics, Hemlock, Introduced Species
- Abstract
Hemlock woolly adelgid, Adelges tsugae, is an invasive pest of hemlock trees (Tsuga) in eastern North America. We used 14 microsatellites and mitochondrial COI sequences to assess its worldwide genetic structure and reconstruct its colonization history. The resulting information about its life cycle, biogeography and host specialization could help predict invasion by insect herbivores. We identified eight endemic lineages of hemlock adelgids in central China, western China, Ulleung Island (South Korea), western North America, and two each in Taiwan and Japan, with the Japanese lineages specializing on different Tsuga species. Adelgid life cycles varied at local and continental scales with different sexual, obligately asexual and facultatively asexual lineages. Adelgids in western North America exhibited very high microsatellite heterozygosity, which suggests ancient asexuality. The earliest lineages diverged in Asia during Pleistocene glacial periods, as estimated using approximate Bayesian computation. Colonization of western North America was estimated to have occurred prior to the last glacial period by adelgids directly ancestral to those in southern Japan, perhaps carried by birds. The modern invasion from southern Japan to eastern North America caused an extreme genetic bottleneck with just two closely related clones detected throughout the introduced range. Both colonization events to North America involved host shifts to unrelated hemlock species. These results suggest that genetic diversity, host specialization and host phylogeny are not predictive of adelgid invasion. Monitoring non-native sentinel host trees and focusing on invasion pathways might be more effective methods of preventing invasion than making predictions using species traits or evolutionary history., (© 2016 John Wiley & Sons Ltd.)
- Published
- 2016
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123. Permanent Genetic Resources added to Molecular Ecology Resources Database 1 August 2009-30 September 2009.
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Abdoullaye D, Acevedo I, Adebayo AA, Behrmann-Godel J, Benjamin RC, Bock DG, Born C, Brouat C, Caccone A, Cao LZ, Casado-Amezúa P, Catanéo J, Correa-Ramirez MM, Cristescu ME, Dobigny G, Egbosimba EE, Etchberger LK, Fan B, Fields PD, Forcioli D, Furla P, Garcia de Leon FJ, García-Jiménez R, Gauthier P, Gergs R, González C, Granjon L, Gutiérrez-Rodríguez C, Havill NP, Helsen P, Hether TD, Hoffman EA, Hu X, Ingvarsson PK, Ishizaki S, Ji H, Ji XS, Jimenez ML, Kapil R, Karban R, Keller SR, Kubota S, Li S, Li W, Lim DD, Lin H, Liu X, Luo Y, Machordom A, Martin AP, Matthysen E, Mazzella MN, McGeoch MA, Meng Z, Nishizawa M, O'Brien P, Ohara M, Ornelas JF, Ortu MF, Pedersen AB, Preston L, Ren Q, Rothhaupt KO, Sackett LC, Sang Q, Sawyer GM, Shiojiri K, Taylor DR, Van Dongen S, Van Vuuren BJ, Vandewoestijne S, Wang H, Wang JT, Wang LE, Xu XL, Yang G, Yang Y, Zeng YQ, Zhang QW, Zhang Y, Zhao Y, and Zhou Y
- Abstract
This article documents the addition of 238 microsatellite marker loci and 72 pairs of Single Nucleotide Polymorphism (SNP) sequencing primers to the Molecular Ecology Resources Database. Loci were developed for the following species: Adelges tsugae, Artemisia tridentata, Astroides calycularis, Azorella selago, Botryllus schlosseri, Botrylloides violaceus, Cardiocrinum cordatum var. glehnii, Campylopterus curvipennis, Colocasia esculenta, Cynomys ludovicianus, Cynomys leucurus, Cynomys gunnisoni, Epinephelus coioides, Eunicella singularis, Gammarus pulex, Homoeosoma nebulella, Hyla squirella, Lateolabrax japonicus, Mastomys erythroleucus, Pararge aegeria, Pardosa sierra, Phoenicopterus ruber ruber and Silene latifolia. These loci were cross-tested on the following species: Adelges abietis, Adelges cooleyi, Adelges piceae, Pineus pini, Pineus strobi, Tubastrea micrantha, three other Tubastrea species, Botrylloides fuscus, Botrylloides simodensis, Campylopterus hemileucurus, Campylopterus rufus, Campylopterus largipennis, Campylopterus villaviscensio, Phaethornis longuemareus, Florisuga mellivora, Lampornis amethystinus, Amazilia cyanocephala, Archilochus colubris, Epinephelus lanceolatus, Epinephelus fuscoguttatus, Symbiodinium temperate-A clade, Gammarus fossarum, Gammarus roeselii, Dikerogammarus villosus and Limnomysis benedeni. This article also documents the addition of 72 sequencing primer pairs and 52 allele specific primers for Neophocaena phocaenoides., (© 2009 Blackwell Publishing Ltd.)
- Published
- 2010
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- View/download PDF
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