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  • 1
    Keywords: Zoology. ; Plant diseases. ; Forestry. ; Geology. ; Zoology. ; Plant Pathology. ; Forestry. ; Geology.
    Description / Table of Contents: Section I: Introduction to Forest Entomology -- 1. Introduction to and the Importance of Insects -- 2. Form and Function -- 3. Forest Arthropod Biodiversity -- 4. Insect Ecology -- 5. Forest Insect Population Dynamics -- 6. Forest Insect -Natural Enemy Interactions -- 7. Forest Insect-Plant Interactions -- 8. Insects and Forest Succession. Section II: Categories of Insects that Damage Trees -- 9. Foliage Feeders -- 10. Bark Beetles -- 11. Ambrosia Beetles -- 12. Woodborers in Forest Stands -- 13. Sap-sucking Forest Pests -- 14. Gall Formers -- 15. Tip, Shoot, Root and Regeneration Pests -- 16. Insects of Reproductive Structures -- Section III: Management of Forest Insect Pests -- 17. IPM: the Forest Context -- 18. Spatial Dynamics of Forest Insects -- 19. Monitoring and Surveillance of Forest Insects -- 20. Silviculture -- Section IV: Future Prospects -- 21. Forest Health in the Anthropocene -- 22. Climate Change and Forest Insect Pests -- 23. Forest Insect Invasions and their Management.
    Abstract: This open access book will provide an introduction to forest entomology, the principles and techniques of forest insect pest management, the different forest insect guilds/feeding groups, and relevant forest insect pest management case studies. In addition to covering 30% of the earth, forest ecosystems provide numerous timber and non-timber products that affect our daily lives and recreational opportunities, habitat for diverse animal communities, watershed protection, play critical roles in the water cycle, and mitigate soil erosion and global warming. In addition to being the most abundant organisms in forest ecosystems, insects perform numerous functions in forests, many of which are beneficial and critical to forest health. Conversely, some insects damage and/or kill trees and reduce the capacity of forests to provide desired ecosystem services. The target audience of this book is upper-level undergraduate and graduate students and professionals interested in forest health and entomology.
    Type of Medium: Online Resource
    Pages: XII, 810 p. 149 illus., 119 illus. in color. , online resource.
    Edition: 1st ed. 2023.
    ISBN: 9783031115530
    DDC: 590
    Language: English
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  • 2
    ISSN: 1442-9993
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Mortality of first instars is generally very high, but variable, and is caused by many factors, including physical and chemical plant characters, weather and natural enemies. Here, a summary of detailed field-based studies of the early-stage survival of a specialist lepidopteran herbivore is presented. First-instar larvae of the monarch butterfly, Danaus plexippus, a milkweed specialist, generally grew faster and survived better on leaves when latex flow was reduced by partial severance of the leaf petiole. The outcome depended on milkweed species, and was related to the amount of latex produced, as well as other plant characters, such as leaf hairs, microclimate and concentration of secondary metabolites. Even for a so-called ‘milkweed specialist’, larval performance and survival appears to be related to the concentration of cardenolides produced by the plants (a potential chemical defence against herbivory). This case study of monarchs and milkweeds highlights the need for field-based experiments to assess the effect of plant characters on the usually poor survival of early instar phytophagous insects. Few similar studies concerning the performance and survival of first-instar, eucalypt-specific herbivores have been conducted, but this type of study is considered essential based on the findings obtained using D. plexippus.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1939
    Keywords: Key words Drought stress ; Plant defense ; Eucalyptus ; Phoracantha semipunctata ; Wood-boring insect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Environmental stresses, particularly water deficit, predispose eucalypt trees to attack by the eucalyptus longhorned borer, Phoracantha semipunctata F. (Coleoptera: Cerambycidae). Our experiments with potted eucalypts revealed that reduced tree water potential was associated with lower resistance to colonization by neonate P. semipunctata, but the linear relationship between water potential and colonization success was reversed at higher larval densities. There was no indication that the bark exudate “kino” served to defend trees from borer attack. Larvae were not able to colonize the cambium of eucalypt logs with high bark moisture, and survival was low under high moisture conditions in artificial hosts composed of pure cellulose. In trees and cut logs with moist bark, larvae failed to reach the cambium, feeding instead in poorer-quality tissues just beneath the bark surface. Our findings suggest that variation in resistance of eucalypts to attack by the borer is associated with moisture content of the bark.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1939
    Keywords: Wood-boring insects ; Host species preference ; Host plant quality ; Eucatyptus ; Phoracantha semipunctata F.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Adults of the wood-boring beetlePhoracantha semipunctata F. showed variability in their attractiveness to five varieties ofEucalyptus when presented with an array of logs in a natural setting. Logs of two host varieties (E. camaldulensis Dehnhardt and the hybridE. trabutii) attracted two to three times more adult beetles than did logs of other host species (E. cladocalyx F.,E. grandis Hill ex Maiden andE. tereticornis Small). In the field, high oviposition rates byP. semipunctata adults resulted in severe competition among larvae. Larval survivorship was low in field logs ofE. trabutii and high inE. cladocalyx logs, although these hosts were the most and least attractive to the adult beetles, respectively. However, when logs were hand infested at low larval densities, survivorship ofP. semipunctata larvae was highest in logs of bothE. camaldulensis andE. trabutii. These findings suggest that adult beetles in the field were most attracted to those logs ofEucalyptus species that represented the highest quality hosts for their progeny under conditions of reduced larval competition.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 74 (1995), S. 185-194 
    ISSN: 1570-7458
    Keywords: Eucalyptus Longhorned Borer ; Phoracantha semipunctata ; Cerambycidae ; wood-boring insects ; herbivorous insects ; Eucalyptus ; plant defense ; water stress ; drought stress
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Eucalyptus L'Héritier (Myrtaceae: Leptospermoideae) species are native to the Austro-Malaysian region, but have been widely planted in temperate and subtropical regions around the world. In most regions whereEucalyptus have been imported, the Eucalyptus Longhorned Borer (Phoracantha semipunctata F.) (Coleoptera: Cerambycidae) has been accidently introduced. Larvae of the beetle bore through the bark and mine along the cambium of stressed trees, usually killing their host. We report here the relative susceptibilities of 12Eucalyptus species in two mixed-species plantations in California, USA. These trees were stressed by water deficit resulting from a prolonged drought.Eucalyptus species that appeared resistant to the borer includedE. camaldulensis Dehnhardt,E. cladocalyx F. Muller,e. sideroxylon A. Cunn. ex Woolls, andE. trabutii (anE. camaldulensis hybrid). Species that were more susceptible to attack wereE. diversicolor F. Mueller,E. globulus LaBillardière,E. grandis Hill ex Maiden,E. nitens (Deane & Maiden),E. saligna Sm., andE. viminalis LaBillardière. Survival of trees was influenced by fine-scale moisture variation resulting from slope and irrigation effects. Resistance characteristics of theseEucalyptus species did not correlate with taxonomic relatedness or bark characteristics, but did correspond to drought tolerance traits in their native habitat.Eucalyptus species that were resistant to attack byP. semipunctata were those that are most tolerant of drought in Australia.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of insect behavior 9 (1996), S. 369-382 
    ISSN: 1572-8889
    Keywords: insect ; mating ; body size ; male competition ; associative mating ; Cerambycidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Both sexes of adultPhoracantha semipunctata F. (Coleoptera: Cerambycidae) congregate on stressedEucalyptus that are the larval hosts. In a field study, 721 adultP. semipunctata captured on host trees varied considerably in body size with the largest individuals being about twice the length of the smallest. Females that were paired with a mate were similar in size to solitary females, suggesting that the probability of a female being mated was not affected by her size. However, large males had greater success than smaller males in obtaining mates. MaleP. semipunctata rely on antennal contact to locate and identify females on the larval host. Therefore, the rate at which males search for mates is a function of the area swept by their antennae per unit time. Because of their greater antennal spread, large males were able to search for females at double the rate of the smallest males. Large males also dominated in aggressive contests for females. The superior abilities of large maleP. semipunctata in both locating and defending mates account for the influence of body size on mating success.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1573-1561
    Keywords: Coleoptera ; Scolytidae ; Dendroctonus brevicomis ; western pine beetle ; aggregation ; verbenone ; ipsdienol ; inhibitors ; antiaggregants ; doseresponse
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The response of western pine beetle,Dendroctonus brevicomis Le Conte, to different release rates of the aggregation semiochemicals (attractants)exo-brevicomin, frontalin, and myrcene and the inhibitors verbenone and ipsdienol was investigated. Release rates of verbenone ranging from 0.18 mg/ 24 hr to 1.2 mg/24 hr did not result in significant reductions in mean trap catch ofD. brevicomis. In contrast, very low release rates of ipsdienol (0.02–0.4 mg/24 hr) significantly reduced trap catch compared to controls. The combination of verbenone and ipsdienol, released at rates above 0.09 and 0.02 mg/24 hr, respectively, resulted in significantly lower trap catches ofD. brevicomis in attractant-baited traps. Results of an experiment testing a factorial combination of different release rates of verbenone and attractants suggest that response is not ratio-specific. The response curve ofD. brevicomis to the levels of verbenone was similar across all levels of attractants, while the response to equivalent ratios of attractants to verbenone was not similar, suggesting that the behavior of the beetles is primarily influenced by the absolute release rate of verbenone.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1573-1561
    Keywords: Dendroctonus brevicomis ; Coleoptera ; Scolytidae ; Pinus ponderosa ; aggregation ; verbenone ; ipsdienol ; pheromone ; inhibitors ; tree protection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The influence of the aggregation inhibitors verbenone and ipsdienol on the response of western pine beetle,Dendroctonus brevicomis, to attractive host trees was investigated. Paired ponderosa pine trees (Pinus ponderosa) were baited with aggregation semiochemicals to stimulate mass attack. One tree in each pair received an inhibitor treatment consisting of five sets of two verbenone and two ipsdienol dispensers spaced 1 m apart vertically along the tree bole. Beetle landing was monitored with sticky traps on the tree bole, and attack density was assessed from bark samples removed four or seven days after baiting. The inhibitor treatment resulted in a significant reduction of both the numbers of beetles landing on trees and the density of attacking beetles compared to control trees (without inhibitors). The ratios of beetle landing density to attacking density were not different between inhibitor-treated and control trees, nor were the vertical distributions of beetles landing or attacking, suggesting that beetle behavior was primarily influenced at a longer range, prior to landing on the tree. Although the application of verbenone and ipsdienol did not preventD. brevicomis from attacking baited trees, our results suggest that when applied to unattacked (and unbaited) trees, their effectiveness at reducing the attack pressure might allow trees having a certain amount of resistance to survive attack by pioneer beetles.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of insect behavior 5 (1992), S. 447-457 
    ISSN: 1572-8889
    Keywords: aphid ; cornicle secretion ; parasitoid ; kairomone ; Lysiphlebus testaceipes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In laboratory bioassays, whole-body homogenates and fresh cornicle wax of Rhopalosiphum padi(L.) (the bird-cherry oat aphid) elicited antennal examination and attack behavior in naive females of the polyphagous aphidiid parasitoid, Lysiphlebus testaceipes (Cresson). No such response was elicited by either homogenates or cornicle wax of Aphis nerii(Boyer de Fonscolombe) (another known host of the parasitoid) or by preparations of the aphid alarm pheromone, (E)-β-farnesene. The response to R. padiproducts was independent of rearing host and appears to be innate. Application of R. padicornicle wax to the dorsum of a nonhost aphid [Acythosiphum pisum(Harris)] increased the frequency with which this species was attacked by L. testaceipes.There was a tendency for the kairomonal activity of the cornicle secretion to decline as the wax dried, although parasitoid attack behavior was still elicited by wax which had been allowed to dry for up to 30 min before testing.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 68 (1993), S. 43-50 
    ISSN: 1570-7458
    Keywords: insecta ; insect-plant interaction ; host suitability ; performance ; whitefly
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The relationship between ovipositional preference ofSiphoninus phillyreae (Haliday) (Homoptera: Aleyrodidae) and host plant suitability on seven host plant species (Citrus sinensis (L.) cv. ‘Washington’ [navel orange],Fraxinus uhdei (Wenz.) [shamel ash],Heteromeles arbutifolia Roemer [toyon],Malus domestica Mill. cv. ‘Granny Smith’, [apple],Pistacia vera L. cv. ‘Kerman’ [pistachio],Prunus persica (L.) cv. ‘O’Henry’ [peach], andPyrus communis L. cv. ‘Bartlett’ [pear]) was evaluated. Ovipositional preference ofS. phillyreae was determined by measuring egg density after adult female whitefies were given a simultaneous choice of all host plants for oviposition. Immature survival, developmental time, and adult size were examined to determine host plant suitability forS. phillyreae. All studies were performed under greenhouse conditions.S. phillyreae showed distinct ovipositional preference among host plant species. Host plant species had a significant effect on immature survival, but little or no effect on developmental time or forewing length. For four of the seven host plant species tested, there was an association between ovipositional preference and survival.
    Type of Medium: Electronic Resource
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